Varieties of two-handed saws, types of canvases and top 5 popular tools
The first iron saws were invented by Scandinavian masters. They cast saws in stone forms. But due to the low quality of the metal used, such saws could not compete with the axes. Only after many centuries the ancient Greek blacksmiths began to create saws by forging. This method made it possible to significantly increase the hardness of the metal and, as a result, the quality of the products increased. Today there are many different saws. In this become, we will consider a two.handed saw
The stores present a huge selection of knives. They have different design, purpose, are carried out using modern technologies. Today, materials for production will like more metal more, but ceramics are of particular stiffness. Such knives are very sharp, Long time
do not need sharpening, but rather fragile. When the chip is formed, it is impossible to restore the previous type of knife, especially on their own.
The knife blades are made of hardened steel so that it is convenient to use.
To make it pleasant to work in this case with a knife conveniently cut, it should not sit in your hand safely. With a comfortable handle, you can use it for a long time. However, it is not often possible to find such a knife in the finished form. Then it is performed independently. The features of the palm are taken into account here, the length is not the shape of the cutting blade. Knives should be made of hardened steel. Therefore, home.made knives from the saw will fully meet the requirements.
Homemade knives are made from many metal parts, which are used for their intended purpose so that, since they are unusable.
Among the details where they will make home.made knives, they distinguish several:
- worn connecting rods of a motorcycle, where they make a set of knives of various lengths;
- Bound keys with one broken end;
- crutches used in laying rails;
- discs of the circular saw of various diameters of not thickness;
- damaged hacksaw canvas of a pendulum saw.
With certain skills in forging, a knife is made of a metal thick cable, a chain from a home unit. For this purpose, a chainsaw is optimally suitable for you. Its chain is quite durable, and a home.made knife will turn out like Damassian knives.
It has a large disk diameter, and its damage is minimal, then with its use two homemade knives can be obtained. Discs have a significant strength of metal metal, since the saw is used for various purposes.
Materials and tools
To make a home.made knife, the following equipment will be required:
The schedule of the dependence of the thickness of the knife on the hardness of steel.
- Woodworking Machine. If it is not, then an electric jigsaw. For final grinding, sandpaper is used of different granularity.
- Nails in other words better copper wire for rivets.
- No sharpening machine for grinding. In his absence, use a corner grinder, a pen, a high.power drill. Today, nozzles are needed as it is also called circles with which these operations perform. From what steel are the discs for the circular saw that with carbide teeth are made? One of these tools should be rigidly fixed, and then perform work.
- Files with various types of notches.
- The brass plate is not a rod if the handle is not mounted on rivets.
- Epoxy adhesive.
How to make a knife from a saw 9XF. Survival Knife from An Old Saw How to Make a Bushcraft Knife
Making a knife from Soviet. Unbearable knife of the survivor.
When releasing two.handed saws, the scope of their use is taken into account. The first 2 models in the ruler are suitable for operation in everyday life. Physically strong men can work with the rest, the tool is used in logging and in adjacent areas. The two.handed drain of the “bison” and other models are in demand.
The size of the canvas
Models with a canvas 1000 and 1250 mm have a triangular teeth. With the help of such a two.handed saw, you can prepare firewood, cut the blocks, cut the trees in the garden.
Large saws (1500 and 1750 mm) have complex m-shaped teeth. First there is 1 tooth, then 2 or 3 simple, they are replaced by another 1 m-shaped tooth. Such saws are also called “Kremlin”.
Small teeth are designed for sawing wood, and m-shaped teeth are needed so that particles of chips come out of the cut.
Manufacturers make the saw so that complex teeth are higher by 1-2 mm, so when independent sharpening, it is not required to reduce all teeth into one fishing line for a trimmer. If you make them at the same height, the m-shaped teeth will tear the wood, complicating the work.
There is a reverse pattern. If the difference in height will be large, then the teeth intended for the output of the chips simply cannot cope with the task.
The shape and location of the handle
Most models have wooden handles, they are inserted from above into the intended seats. This position is the most convenient. When working, the brush is located above logs, so it is almost impossible to get an injury. Once they are seats on top, in case of fatigue, you can work not 1, but 2 hands.
There is another option for the location of the handles. A hole is made in the saw canvas, the edges of which are treated with plastic. The advantage of such a model can be called that it is more convenient to transport it, because the pens do not protrude. Such a saw has a beautiful view, but it will be more difficult to work: the brush is on the same line with the canvas.
When buying a carpentry tool, you need to look so that the saw after bending is straightened, occupying the starting position. It should also be borne in mind that the logs are sawed by putting on the goats. If they are not on the farm, you need to purchase the product with the saw.
The step of the tooth
Step of teeth. the distance between the tops of the pair of neighboring saws of the saw. Their choice depends on the type of metal processed and the speed at which the strip saws are supplied. The step will cause an increase in stresses too much, as well as a deterioration in the quality of the saw. A small step provides a smooth surface, but needs large energy consumption.
The height of the tooth is the distance between its vertex and the base of the cavity. The presence of interdental deepening allows you to remove sawdust formed during sawing, from the working area. The volume of this recess should be sufficient, while the sawdust should not occupy all its space. Their excess will be squeezed out on the sides of the saw canvas, increasing resistance and friction, which necessitates more effort during sawing.
Incorrect selection of tape heights of strip saws can cause overheating of the canvas and the appearance of the so.called “wave”. In addition, additional stresses may occur, which can provoke the appearance of microcracks.
The front corner of the tooth
The front angle of the tooth is the angle between the perpendicular of the tape canvas and the front line of the tooth itself. The angle of sharpening allows the tooth to engage and cut the metal canvas.
It should be borne in mind that too large the size of the angle will not allow you to accurately cut the metal. With the help of a small angle of sharpening, it provides a more even surface of the metal, but if it is too small, then a significant decrease in performance occurs.
Incorrect choice of the hook angle provokes the gear of teeth and the appearance of cracks in their hollows. The optimal size of the angle of sharpening is determined depending on the processed metal.
By type of tooth shape and angle of sharpening.
Each manufacturer has many series of paintings made of one material, but designed for sawing different types of metal. The main difference between such canvases is the shape of the tooth, the main varieties of which will be considered below:
- Forms or standard. Front angle of the tooth 0 degrees. Optimally suitable for materials with the formation of short chips, steels with high M carbon, cast iron, blanks of small sections, thin.walled profiles, fragile materials.
- Formac or hook. Front angle of the tooth10 degrees, positive. This is a form for universal use, t.e. Do not know what. take this. As a rule, it is used for iron.containing metals and steels with carbon of 0.8%, structural, improved steels, for large profiles, workpieces of continuous section, non.ferrous metals and steels.
- Formal or long. Front angle of the tooth 0 degrees. Increased interdental space. Optimally suitable for sawing soft materials (aluminum and wood).
- Formm or alternating. Front angle of the tooth10 degrees, positive. Tooth height variable. Optimally suitable for sawing stainless steels, high.performance cutting of viscous materials, and large.sectional blanks.
- Formap or profile. The front angle of the tooth is 5 degrees, positive. Optimally suitable for hollow profiles and corners, steel beams, sawing packages of blanks, t.to. reduces the level of vibration during sawing.
- Formar orradial. The front angle of the tooth is 16 degrees, positive. Optimally suitable for stainless steels, high.performance cutting of viscous materials, and large.sectional blanks. Has a long service life.
- Format or trapezoidal. Provides high performance and the best cut quality. We list the main ones.
- TSN. Negative front angle in combination with an enlarged interdental cavity for the best exit of the chips. Suitable for: hardened steel with hardness up to 68 HRC, blanks with a hardened surface (shafts), solid blanks of not more than 275 mm, chrome surfaces, chromium.
- Tsnenr. Surprical front angle in combination with an enlarged interdental cavity for the best exit of the chips. Suitable for: hardened steel with hardness up to 68 HRC, blanks with a hardened surface (shafts), solid blanks of not more than 275 mm, chrome surfaces, chromium.
- TNF-A. A positive front angle combined with an enlarged interdental cavity for the best exit of the chips. Suitable for: non.ferrous metals and aluminum.based alloys. It is optimal to use on machines with a low level of vibration and manual feed.
- TNF-B. A positive front angle combined with an enlarged interdental cavity for the best exit of the chips. Suitable for: non.ferrous metals and aluminum.based alloys. It is optimal to use on machines with a high feed speed.
- There are still many varieties of this type, t.to. Each manufacturer for solving highly specialized problems has in his assortment a line of a wide variety of paintings with specific forms of tooth.
By the step of the tooth from which tape saws are made.
The step of the tooth is indicated either in TPI (Teeth Per Inch), where the step is determined by the number of teeth per inch of the canvas, or in millimeters, where the step is determined by the distance between the teeth.
- A constant step is designed for cutting continuous blanks.
- A variable step is needed when cutting a variable section of pipes and profiles. A variable step of the tooth reduces excessive voltage of the canvas and significantly reduces the level of noise and vibrations.
Rule! At least 3 teeth should be on the length of the cut. With too small the amount of teeth on the length of the cut, the tooth can stock up and break. Maximum 24 teeth should be at the length of the cut. Too many teeth lead to overheating and reducing the service life of the saw, t.to. The cavities between the teeth do not contain shavings. This leads to push.ups from the surface of the cut, its rapid wear or breakdown: the tooth cuts chips that fills the tooth hollows; When the cavity is filled, the resistance of cutting increases; If the supply does not decrease, cutting becomes intermittent, the teeth of the tape saw occur. Soft materials require more rare teeth of tape saws and larger volumes (Min 3, OPT 6-12, Max 24). Solid materials require more teeth involved in the work at the same time, and a smaller volume of depressions (Min 6, OPT 12-24, Max 48). A single blank will also be taken into account or it will be a package cutting.
The capabilities of the tape.saw machine also affect the choice of string of tape saws. On tape saws equipped with constant supply mechanisms, you can use tape saws with a big step, which will allow you to work with greater performance. Latu.saw machines with a supply under the influence of the weight of the frame require the use of strip saws with a lesser step.
How to choose the right circular saw for metal
Metal saws are widespread in industry and everyday life. At the household level, a metal saw. This is a manual hacksaw with interchangeable canvases. It is such an instrument that we will see in the first lines of issuance in any search engine.
Industry is characterized by more productive samples: the most important, at the moment, equipment from this category, is a strip saw for metal, although about 20 years ago the most common type of metal saw in the workshops was a mechanical hacksaw. Such machines still remained in some places and, even more surprising, even meet with new! Mechanical hacksaw is a morally obsolete and noisy machine, as a rule, having a non.rotary vice. Smecked tool for him. Carebout. Wears out unevenly. more in the center, the edges remain untouched and that means economically this type of tool is less effective than a disk or ribbon fabric.
A more expensive, but also much more productive machine, a disco saw for metal was and remains. Its obsolete variety can be called a segmented saw, otherwise called Heller’s saw.
Now on disk cutting machines with automatic or manual supply are used as canvases made of high.speed steel. These canvases have a relatively larger number of teeth, and canvases with carbide teeth. Sawing disks made of high.speed steel, not to be confused with saw wheels on wood, most often used for cutting metal ducts made of galvanized steel. This is associated with a large number of teeth and, therefore, with a lower distance between them, called a tooth step. This factor allows you to cut very thin steel without.
For a productive cutting of a steel circle or aluminum slabs, it is best to use an automatic disk cutting machine. On such a machine, saw wheels with carbide teeth are installed. The disk rotates at high speed and is cooled by oil fog. Well, if you need to cut a steel beam or pipe, then the number one is now in all industries. This is a strip saw. Ribbon machine. economical and quiet type of equipment for cutting blanks, both with a thin and thick wall.
As for our promise to give advice on the selection of circular saw for metal, the above types of tools do not quite relate to this topic. Our company specializes in relatively light and simple saws and cutting machines with manual feed and sawing disk with carbide teeth working without additional cooling. We just want to be objective and give as much as possible a complete idea of the state of affairs in the field of sawing metal in the present and near past.
Chapter 2. Circular saws for dry metal cutting. Appointment
Convenient and relatively inexpensive way to cut steel blanks in the workshops and are circular saws right on the facilities. Several companies in the world specialize in their issue and the design of some models is very similar. Basically, the case applies to manual circular saws and pendulum detachment machines.
Manual circular metal saws are designed for cutting a steel sheet up to 12 mm thick, as well as a profile sheet and sandwich panels up to 80-100 mm thick. As the name implies, circular saws of this type, during work, are held in the hands. Their design, sometimes allows you to tilt the disk at an angle of up to 45 degrees to the plane of the supporting site, and this gives a greater versatility. You can even form a chamfer for welding in one motion, when cutting a sheet.
Unfortunately, the lightness and speed with which circular saws cut thick steel, when compared with a conventional corner grinder, for example, is compensated by the relatively high cost of saw discs. However, only leaf scissors or laser cutting can be called an alternative, which can not compare with hand saws either by price or mobility.
So, manual circular saws will allow you to cut quite efficiently and accurately:
- low.carbon or low alloy sheet steel up to 12 mm
- leaf sheet
- Enjoyable flooring
- profile sheet with a wave height up to 84 mm
- metal tile
- sandwich panels.
A little less effective, but it is still possible to saw such saws:
- steel pipes and profile. You can’t see where the cut will pass, so if accuracy and repeatability are very important, it is better to use pendulum saws
- scrap metal, such as old cars, automobile bodies or agricultural machinery. During cutting, it is possible to displacement of structures and pinching the disk. This can lead to its breakdown. In such situations when accuracy is not important, use gas cutting. However, remember the danger of an explosion.
- Stainless steel. This is due to the property of stainless steel poorly conduct heat. Because of this, all unnecessary heat rushes through the disk, which leads to its warfare and damage. It is better to use something with liquid cooling.
The pendulum cutting machines are very good for cutting long rolling: pipes, profiles or circles. The name pendulum saws comes from the form of movement along the arc around the axis of the swing. Classification is more suitable for this saw. small.sized or portable metal cutting machine. The maximum diameter of the disc saw produced for this type of machine tools, at the time of writing, was 400 mm. However, the most common can be called 355 mm or 14 “disk. Refined machines with a disk of such diameter can sprinkle the blanks with a cross section of up to 130 mm. In some cases, it is permissible to cut a rectangle in size 95×180 mm.
What is best to entrust a pendulum disk with a carbide disk:
- steel or cast iron pipes
- steel rental, in particular a corner, a channel or an I.beam
- cable tray with wall thickness from 1.5 mm and above
- profile pipes or a closed profile of a more complex section
A little less effective, but it is still possible to cut such machines:
- A torn thin.walled profile with a wall thickness of less than 1 mm. great vibration, you need to use tabs to prevent crushing with a vice. Helps, but performance falls
- Cable without armor and steel core. In general, the aluminum cable will be cut without problems, and any steel element in the cable is obviously hardened or made of spring steel. You can’t get the trouble. Therefore, we advise you to cut the cable with caution.
- Steel circle. The saw disk will quickly fail in any metal with a thickness of more than 6 mm, but the experience of cutting a circle with a cross section of 50 or more mm we have. Multipursens Rage are suitable for this purpose.
- Stainless steel. AISI 302, 303 or 304 steel pipes can be cut, but only with the condition of sufficient time to cool the disk in the intervals between the cuts. Thus, cutting becomes unproductive or wasteful.
- Carbon steel. discs do not cope with carbon steel poorly. Mark 30 and higher requires caution and leisurely. The resource of the disk will also decrease.
Well, and at the end of the review, we cannot ignore the multi.purpose end saws Evolution Rage. Many people are interested in the opportunity to cut a steel profile, pipes and other blanks with such saws. Based on our experience, we can say that there is such an opportunity. But not more. And the point here is what.
Parts with a length can cut fairly wide blanks. They are very well suited for accurate sawing of boards at different angles. The clip of workpieces is carried out at a certain distance from the cut line so as not to block the turning table. At the same time, the clamp is a light clamp. All this is normal for cutting wooden boards and even an aluminum board used in the production of automobile trailers, but does not match the loads when cutting a steel profile. Vibration that occurs in the long shoulder of the broach is harmful on carbide. Another factor. Only in 2020, the discs installed on the end saws began to correspond to the speed of rotation of the saw, before that the speed of rotation of the disk was too high. Therefore, it was not necessary to talk about prolonged cutting of a steel profile or pipes on the end saw. If you cut steel from time to time, then such equipment is quite suitable. If the task is to constant work with steel rental. Our recommendation is cutting machines or manual circular metal saws.
Description GOST R 53924-2010
GOST R 53924-2010 was prepared by VNIIUSPRAMAL OJSC, introduced by the Technical Committee on the Standardization of TC 95 “Instrument”, approved and enforced by order of the Federal Agency for Technical Regulation and Metrology of November 12, 2010. N 399-st. GOST applies to endless tape saws for cutting varietal and shaped rolling, casting, sheet material, pipes and other products from ferrous and non.ferrous metals, as well as non.metallic materials on tape.saw machines. GOST R 53924-2010 includes modified basic regulatory provisions of the following international standards:-ISO 4875-1: 2006 “Fabric of tape saws for metal. Dictionary “(ISO 4875-1: 2006” Metal-Cutting Band Saw Blades-Part 1: Vocabulary “);-ISO 4875-2: 2006” Fabric of tape saws for metal. Characteristics and dimensions “(ISO 4875-2: 2006” Metal-Cutting Band Saw Blades-Part 2: Characteristic and Dimensions “). The following standards were used in this standard: GOST 3882-74 alloy alloys. Brands (ISO 513-75 “Materials solid instrumental for cutting processing. Designation of the main groups of shavings and use groups “, MOD). GOST 5950-2000 rods, stripes and skeins made of instrumental alloy steel. General technical conditions. GOST 19265-73 rods and strips of high-speed steel. Specifications.
Options for the manufacture of tape canvases:
canvases made of instrumental alloy steel according to GOST 5950; 2. bimetallic canvases (the material of the cutting part is high.speed steel according to GOST 19265); 3. canvases made of instrumental alloy steel with teeth equipped with hard alloy according to GOST 3882; 4. canvases for friction cutting (under the influence of heating occurring during friction) from steel, resistant to fatigue.
Standard wiring: transverse wiring of each tooth alternately to the right and left. Note. not used for canvases intended for work on ferrous metals.
Drawing. wiring two adjacent teeth through one undiluted.
Using a Circle Cutting Jig on Table Saw
Wiring out two adjacent teeth through one undiluted: wiring one tooth to the right, one to the left, one. without wiring.
Drawing. wiring two adjacent teeth through one undiluted
Wave.shaped wiring: transverse wiring of teeth groups with a regular change in the direction of wiring to the right and left.
Group wiring: transverse wiring of several teeth alternately to the right and left, behind them is one, at least, undistorted.
General wiring of the teeth of tape saws of all performance. at the discretion of the manufacturer. Wiring teeth on the sides of the canvas should be equal. Maximum wiring deviations. ± 0.05 mm. The allowance of the straightness of the side sides of the canvas in the transverse direction along the entire width of the non.diluted part should be no more than 2 μm/mm.
The main dimensions of the paintings must correspond to the table indicated
The length of endless strip saws is determined in accordance with the type of machine used.
Marking and designation of tape canvases
An example of decryption from the marking of Honsberg Bi/M42 S 20×0 applied to the ribbon fabric.9×2362 mm, 10/14tpi: Honsberg. a German manufacturer of the tape canvas; BI/M42. material of the cutting part of the teeth Bimetal M42; S. spectra tooth profile with a front angle of 0 °; 20. the width of the canvas in mm; 0.9. the thickness of the canvas in mm; 2362. the length of the “endless”, welded into the ring of the canvas in mm; 10/14. a variable step of the teeth, indicates that the first inch of the tape canvas will have 10 teeth, on the second 14 teeth, which will subsequently alternate along the entire length every 2.54 centimeters (inch = 2.54 cm); TPI. the abbreviation from Teeth Per Inch is translated as the number of teeth per inch.
The constant step of the teeth of the tape canvas. all the teeth are the same and are located at the same distance.
The variable step of the teeth of the tape canvas is “small” and “large” teeth alternate through every inch and it turns out that one inch has one constant step of the teeth, the second. the other. the other. Ribbon canvases with a variable pitch of the tooth are most preferable when cutting a metal, as they have a wider operating range, and also reduce the vibration and noise of the tape canvas compared to a constant step.
The difference between tape canvases M42 and M51. The cutting edge of the M51 canvas is slightly harder than that of the M42 canvases, but also a more fragile. Due to fragility, the M51 canvases make sense to use when sawing continuous blanks that are not prone to vibrations, for example, it is perfect for drinking a crippled stainless steel that cannot cut the M42 canvas. The resistance of the ribbon canvas M51, as a rule, is 10-20% higher than that of saw with the material of the cutting edge of M42. Another important point, the M51 canvases cannot be less than 27 mm wide, and the smallest step of the teeth will be 4/6 tpi (the first inch. 4 teeth, the second inch. 6 teeth). For comparison, in tape paintings M42 and a width of 27 mm, the smallest step of the teeth can be 14 tpi (14 pieces per inch).
Advantages of sawing on tape.piles
The technology of sawing on tape.saw machines finds more and more demand in modern industries. The main advantages of using the strip paintings include:
- the smallest size of chips and waste from cutting;
- high accuracy of the manufacture of ends of parts;
- perfectly even surface of the cut of the part;
- excellent performance and speed of equipment;
- Smallness and lack of vibrations.
Brand steel frame saw
Why did they love Machete, Khukri, Paranges or Bolo? After all, in Russia it was very good, in no way inferior to a chopping-in-wheeling cold weapon-Tesak. And as a type of tesakov. short and light broadswords. How to make a tesak?
Tesac. a broadsword. this is not only an excellent blade weapon, but a full.fledged assistant in any campaign. he is acute, like a razor, and strong, like a short sword, is reliable and durable if it is made of correct steel, for example, from 9XF Soviet hardening.
The need for Tesak-Palash for a survivor-an-tapeezhnik is obvious, therefore, to list the areas of its use is unnecessary. Separately, it can be noted that the broadsword presented on the video is not a cold weapon, according to the legislation on a separate basis. its “rocker” from the blade axis above 15 mm. Planting testing in the field revealed all the unique properties of the steel from which the broadsword is made.
Soviet steel of the 9XF brand is worthy of a separate consideration.
The modern steel of this brand cannot be compared with the steel of the Soviet period. over, since 9XF steel was used to cut other steels, in the Soviet period its qualitative resource was unprecedented. Used it not only for cutting other steels. Yes, 9KF brand steel was not subject to welding. But the high.quality, temperature and plastic properties of this steel made its choice optimal for use on sawmills in logging. Why?
One detail is important here. Namely, the design of the sawmills, which led to what was not found to use better steel in them than steel 9XF. So, the design of the R-63 sawmill was specific (this remained to this day)), complex, eternal, but not very convenient to maintain. During a breakdown of one of the cutting saws, it was necessary to reconfigure the entire saw scale again, which led to a simple pilrams, and given that the logging in the USSR was mainly engaged in zones, such downtime did not contribute to the career growth of its superiors. And the delivery of new saw paintings to the wilds was problematic.
|In this regard, there is a curious fact: the R-63 was tuned in some places, as not paradoxically, mushrooms. 9XF canvases were all industrial, the capture in the frame was the same, but the tension clearance had a small backlash. Everything went fine according to GOST, and the resource of the paintings was very decent. But still, sometimes there were incident caused by the imperfection of the human attitude of the saw set. So, the convicts, not having the opportunity to sharpen the steel canvases qualitatively, quickly get them from manufacturers, despite the fact that the plan needed to be overfulfilled, they came up with the use of canvases from steel 9XF, perfectly holding sharpening and incredibly flexible and durable, and under seizures. to lay razors that allow you to configure the frame with a kind of tuning fork: they sought the same sound of paintings in the frame, launched the frame, the resource of the zone was enormous. all the canvases were tented the same. there were no tension overload on some fabrics, and on other shortages of it. The resource of the work of steel 9XF for wood. huge.|
R-63 pylorams have gone into the past as soon as they stopped producing the famous canvases of Soviet production of the 9XF brand. Modern, declared as saws from 9XF, and do not closely have the properties of the previous steel: they have the composition not the same, and the hardening is not the same, respectively, the characteristics are not the same. In the villages and abandoned sawmills in some places have either whole canvases or fragments of Soviet-made paintings.Craftsmen, knowing the amazing qualities of that steel, collect them as they can and where they can. in villages and abandoned zones. Here are its characteristics:
Here is such a steel of the 9XF brand of the Soviet period of release can be advised to any taiga autonomist to make a casket or knife, since with fantastic flexibility, it has amazing hardness, holds the sharpening of the cutting edge for up to six months (unless, of course, the stones and sand does not cut) and does not lose it) and does not lose it) their properties at low temperatures of the prima, the Far North, Siberia and the Far East.
greetings to all!Please tell me the normal knife will be from such a saw?
Made from this.The owner of the knife likes.I have ambiguous impressions.Rusts, stupids faster than you expect.(Khim.I did not do oxidation, but in vain).But, in plus, stupid (office paper practically does not cut) trees gnaws with a bang.Everything is only my opinion based on experience, no more.
I made from such a saw at one time. Soft.
It is necessary to roll it. The entire woodworking tool is not too firm, but the steel is good there.
quote: a normal knife will be from such a saw?
If you call, I’ll throw it and I have my 5 kopecks: in the photo-a saw for a frame saw, hardness and steel here were already indicated above 9XF, 45-49 HRC.Well, now the main ambush: this one has already dragged, which has already worked as well, released by order, so even 45 units will be squeezed from it very difficult. only on the re.jack, and these are dancing with tambourines.I made 4 knife from such a saw, not a single one is even good to clean potatoes.
I wore such a saw on a solider. Showed 44 units, and not a single more. I made it a machete. But, however, an uncle for three months, as it cannot be taken, so there is no review yet. And one acquaintance made a couple of knives from such a saw, and at the same time the descent cuddled the file. For example, I do not understand such softness for a knife.
it will not cement? (Then it makes sense to grind on one side to work with a carbon layer)
zone hardening will save the father of Russian democracy to cement, in composition steel is normal
quote: Originally posted by steppehunter: it will not be cement?
Maybe U7A or 6FH, steel is not very, and the canvas is thin, judging by the photo.
quote: Originally posted by Nika: Most likely 9XF or 6XF.
quote: Originally posted by SHYR3000: I saw this already well.worked, which has already been released, so even 45 units will squeeze it out of it. Only on the re.jack
quote: Originally posted by nikolaich72:
If not mind, I can be alone and insert your photos into my topic?I did not take your saw at once, and now all cut.
The list of the most of the pieces
We give only to the most commonly used strip saws depending on the metal and cutting modes. In fact, there are quite a lot of manufacturers, but there is no big difference in the technical characteristics of their products.
A wide range of saws makes it possible to choose the most suitable for each conditions, the tool works in the recommended parameters. Due to this, productivity increases, the quality of the cut increases and the saw resource increases.
Types of strip saws
Depending on the characteristics of the production process, the volume of cutting and the technical parameters of parts, the industry produces several types of tape saws, each of them needs to be selected for its own canvas.
- In the direction of movement of the canvas. It can be located in a horizontal or upright position.
- By power of electric drives. There are equipment for domestic use with a capacity of up to 2 kW, the diameter of the saw for them is the smallest. Industrial enterprises operate at the KAC station with a drive capacity of more than 3.0 kW.
- By speed of the canvas. The vast majority of modern machines have several speeds. Depending on the specific type, it can change from 10 m/s to 100 m/s.
- The canvas became on the brand. They come from one metal or bimetallic, with different materials for the manufacture of teeth, special species sharpen, slopes, etc. D. The parameters are selected in the production of the characteristics of the workpieces, the requirements for the quality of the cut and the volume of work.
- According to the design features of the machines. They can be single.column and two.column, horizontal and vertical.
A properly selected saw not only has a positive effect on the quality and performance of cutting, but also increases labor safety.
Types of hacksaw paintings
The canvases for working with metal have their purpose for different alloys that differ in their characteristics, the thickness of the sawed material and the volume of upcoming work.
The estimated volume of work is divided by a tool into 2 types.
Manual tool. hacksaw cuts metal due to the application of physical efforts.
In this case, a relatively small amount of material manages to cut.
Accordingly, the blade is not designed for long loads and is made of carbon steel.
A handmade canvas is always cheaper, but working with it is harder.
Manual hacksaws can be both professional and household.
The canvases, respectively, can be as more durable. hardened, for example, blades for a sparta metal hacksaw, and less reliable.
The difference between them is due to the ability to maintain the severity of the teeth with prolonged use.
Power tool. hacksaw performs work at the expense of the electric drive.
The canvas is made of more durable alloys, since the electrical.burners are designed for a large amount of work with stone, metal or wood.
Crossbow canvas for metal
The main feature of the blade for sawing metals is very small teeth, since it is impossible to work with large metal.
In any model, household or professional, the teeth are made of hardened metal, as they should exceed a metal alloy in hardness, for the cutting of which the tool is used.
The dimensions of the canvas vary from 150 mm to 300 mm.
Fabric for hacksaw for metal is distinguished primarily in the manufacturing material:
Permissible for the cutting part of the saw is a hardness of 45 units.
This option belongs to the most short.lived, so it is installed only on household models.
Professionals recommend selecting more solid brands. 55–60 HRC.;
Flexible, but are exclusive strength.
This combination provides both the speed of cutting and the ability to work with solid alloys;
Especially effective in cases where it is required to cut steel at a certain angle;
For welding, an electron beam method is used, since the metal is required on a narrow area.
The saw is very flexible, it can literally turn into a knot.
Another classification is related to the wiring of the file.
To avoid jamming the tool, the cut should be somewhat wider than the canvas itself.
They achieve this, performing wiring. along the canvas or on teeth:
The wiring on the canvas involves the bend of the edge of the saw along with the teeth to the right and to the left alternately.
Bending height 2-3 mm, deviation. 0.25–0.6 mm.
The wiring on the canvas is sold on products with small teeth;
Wrestling on teeth. only teeth are bent in different directions.
Alternation is determined by the size of the step.
With a small step, 2-3 teeth are allocated immediately, with an average. 1 tooth is allotted to the left, 2. to the right, and 3 remains in place.
With a big step, the teeth are diverted alternately.
There are also canvases by the nature of the placement of the teeth:
Select teeth of different sizes so that the tool can work with materials of different hardness and density.
Combine both metal cutting options. for soft and hard alloys, for example, and teeth for sawing metal and wood.
There is a more non.standard option for cutting metals. string.
The latter is made of alloy steel, then diamond spraying is applied to it with a thickness of 2 mm.
At the ends of the string, loops are made so that the device can be fixed in an ordinary hacksaw.
Diamond string cuts literally any material: ceramics, stone, concrete and metal, and solid alloys.
At the same time, the thread is very cheap compared to professional knife stakes for metal.
Checking the string in work
The diamond thread is tested not only when releasing, much more valuable consumer tests.
The string saws very quickly, there is no need to attach much effort.
Moisten the thread and material before sawing, and repeat wetting during sawing.
The results of consumer testing are as follows:
The test was carried out at a drill with a diameter of 0.7 mm, made of high.speed steel.
The cut with a depth of 1 mm does the thread do it in 1 minute.
The dimensions of the canvas, length, width
The sizes of the file are determined by fastening.
For such products, only 2 sizes are available: 300 and 150 mm.
The first option is considered standard, products of this size are made by all possible types and from all permissible materials.
150 mm can only be made of carbon steel.
The thickness depends on the purpose of the tool.
On professional models, the size varies from 0.63 to 1.25 mm.
Power spots have a large thickness. up to 2.5 mm.
The height of the saw reaches 13 mm. They are made only of bimetallic alloy, since all other options are too fragile.
Saw blade weld automate
Made only from bimetallic alloy.
Products with small teeth are suitable for sawing solid metals.
The option with large ones is designed to process soft.
Since when sawing soft metals with small teeth, the saw is quickly clogged with chips, and the drink is inaccurate, torn.
An example of a canvas for a strip saw
Suppose a certain production has the task of cutting 2 types of blanks on a tape.saw machine with a tape with dimensions of 4700x34x1.1 mm:
Step 1: Size is known 4700x34x1.1 mm
Step 2: On table 1, we see that several models of canvases are suitable for stainless steel, but, given that stainless steel will need to saw in large batches, we will choose the material M71, etc.to. For a specific task, it is better to have a highly specialized saw, stop your choice on Magnum HL.
Step 3: T.to. We have a full-shaped blank we will use table 2, a diameter of 110 mm is included in the range of 80-150 mm, so we choose step 3/4.
For a circle with a diameter of 110 mm stainless steel, a canvas was selected: Amada Magnum HL 4700x34x1.1 with a step 3/4.
Step 1: Size is known 4700x34x1.1 mm
Step 2: T.to. The material is ordinary structural steel, then we, without even looking into table 1, select SGLB, t.to. This is the most popular model just because it is for structural steel.
Step 3: T.to. The channel belongs to hollow workpieces, then we will use table 3, the thickness of the walls of the 12th channel about 5 and 8 mm and focus on a diameter of 120 mm, so we select the step 5/8. (In general, these dimensions do not give a clear answer, it is recommended 2 steps 6/10 and 5/8, first we choose larger, if in the process there is vibration or does not suit the quality of the cut, you can try a step smoother).
For a channel 2, the canvas was selected: Amada SGLB 4700x34x1.1 with a step 3/4.
From the above example, it is clear that, unfortunately, in the conditions of real production, sometimes it is not possible to get an unambiguous answer which tape canvas to purchase, t.to. Typically, ribbon-saw machines are loaded with blanks of different sizes from various materials and buying saws for all occasions is not advisable, firstly, because it requires considerable monetary investments, and secondly, you will have to stop the machine every time when a new workpiece is received.
There are rarely tasks where you need to cut one workpiece all the time, on the contrary, as a rule, various blanks are cut, and sometimes the size range is very large. One tooth step cannot be selected for a large range, so in such cases it is recommended to break the existing range into several and for each to choose an average step.
IMPORTANT! Sometimes several types of canvases are suitable for all recommendations and determine exactly which are best suited to solve your problem only according to the results of the experiment.
Conclusion: If you have a complex nomenclature, you should consult a specialist for the selection of strip paintings and, having discussed all the nuances with him, choose a list of suitable paintings.
If you need a specialist consultation or you are ready to order tape canvases, call the free number 8-800-100-42-28 and send an application by e-mail.