What to know when choosing a ribbon
To get a good quality polishing, you need to be guided by the parameters of the grinder, the characteristics of the tooling and the features of the processed surface. When choosing a sample it is necessary to analyze the following parameters:
- what type of product is needed (with coarse abrasive, medium, fine or diamond);
- calculate the belt speed (it must be able to withstand a shaft speed of over 1500 rpm).);
- To determine the abrasion resistance of the chosen item;
- find out the value of the maximum permissible elongation and tensile strength (good products are considered to be not less than 15%);
- On what basis the abrasive is applied (by what method and its composition);
- determine from the marking what is the length of the belt;
- Whether the width of the belt meets the dimensions of the machine used.
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Calculation of parameters and evaluation of the main characteristics of the grinder should be made before buying the product. This will allow to get rid of problems that may arise when replacing it or using it incorrectly.
How to simply glue the sandpaper tape for the grinder
With frequent use of the grinder, craftsmen have to constantly change its main consumable material. the abrasive tape. In this case there are always two options: buy it ready-made or make it yourself.
The second method is quite convenient and profitable, because you do not have to overpay for the purchased, as well as spend time on a trip to the store. Consider the simplest method recommended by experienced grinders.
Types of grinder belts
Grinder belts are classified according to
- purpose (type of operation performed, quality of processing);
- Geometric dimensions (length and width);
- the permissible speed of movement;
- type of abrasive;
- the way the abrasive coating is applied;
- the company that manufactures such products;
- cost.
According to the type of operations performed, grinder products are divided into four categories:
- pretreatment (creation of finished shapes or blanks);
- roughing treatment of surfaces;
- preparatory operation before the final sanding;
- Finishing or surface polishing.
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Each operation requires a specific type of belt. the first problem is solved with the help of rough (roughing) belt, brand R24. For roughing, finer grades of P36 are used. Preparatory operations are carried out on tapes P80-P120. Finishing is carried out with the smallest abrasive belts. Diamond belts of grades A3k0-A100 can be used for this.
The permissible belt speed is determined by the substrate material and the strength of the entire structure. Sturdy cloth or synthetic fiber base is used as a substrate.
According to the type of grinding material and the method of its application, abrasive belts are divided into categories.
As an abrasive crumb is applied on the surface:
It is applied to the surface in two ways: open or closed. Each of them provides a certain degree of coverage of the substrate. The first carries out the abrasive application on no more than 60% of the surface of the abrasive material. The second type provides complete coverage.
The geometric dimensions of the grinding belt depend on the technical characteristics of the grinding machine. The main parameters are length and width. They are all standardized and have several set sizes. In terms of width, they come in two sizes: 50 and 100 millimeters. The length is more variable and is equal to 610, 915, 1230, 1600, 1800 millimeters. For some specialized machines, tape length of a given size is available: 2000 mm with a width of 50 mm.
Depending on the characteristics make a choice for processing wood, metal, plastic surfaces. In some cases, to finish the surface, an emery strip is used.
Materials and tools required
To make, glue the tape with their own hands, it is required to prepare:
- Sheet of sandpaper. It must be long, in order to cut the required length from it;
- vise;
- ruler,
- lead pencil,
- standard scissors,
- gas torch,
- A dense sheet of metal, on which the process of preparing the tape and gluing will take place,
- Two silicone sticks (from an electric gun),
- magnet.
How to glue a grinding belt for a grinder
Grinder is a grinding machine designed for processing various materials and surfaces. Such a machine can be assembled by your own hands, based on your needs, the required power and other parameters.
For these machines, you can choose a sanding belt of different widths. The following are standard sizes:
But, as masters collect such units “for themselves”, you can often find that the generally accepted abrasive parameters are not suitable for a particular machine. In connection with this, as well as with the desire to save money, craftsmen have found and continue to find ways how to glue the grinding belt at home. After all, the belt is an expendable material that requires periodic replacement, and with active use. quite often.
How to glue sandpaper for a belt sander
When using the grinder often, craftsmen have to constantly change its main consumable. the abrasive belt. In this case, there are always two options: buy it ready-made or make it yourself.
The second way is quite convenient and profitable, because you do not have to pay extra for the purchased and spend time to go to the store. Consider the simplest method, recommended by experienced resurfacers.
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Abrasive grit materials for tapes
The quality of belt grinding is determined by the degree of abrasive layer wear resistance, which may consist of powder of different materials. The most common types of sanding belts come with the following types of spray coatings:
- aluminum oxide, a brittle material most commonly used in the woodworking industry
- silicon carbide. strong and wear-resistant material used for grinding metal, fiberglass, hard plastic and painted surfaces;
- garnet. an abrasive of high strength, which is more often used for processing wooden workpieces;
- Zirconate. wear-resistant and coarse-grained abrasive intended for rough belt grinding of metal, wood, plastic;
- compact grit is a grit material that is used for sanding stainless or black steel products;
- Ceramic abrasive. hard material used for grinding and leveling of wood.
In heavy industry, sanding belts made with microreplication technology are widely used. The abrasive layer of the belt consists of structured grains. If they are used on belt machines, it is possible to achieve high quality finish grinding of metal surfaces.
Types of grinder belts
Grinder belts are classified according to the following indicators:
- purpose (type of operation performed, quality of processing);
- geometric parameters (length and width);
- permissible speed of movement;
- type of abrasive;
- The way in which the abrasive coating is applied;
- of the company that manufactures such products;
- costs.
According to the type of operations performed, grinder products are divided into four categories:
Gluing grinder sand belt Grinder belt
- pretreatment (creation of finished shapes or blanks);
- rough machining of surfaces;
- preparatory operation before the final sanding;
- Finishing or surface polishing.
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For each operation, a different grinding belt is used. The first task is solved with a coarse (roughing) belt of the P24 grade. For roughing the finer grades of P36 are used. Preparation operations are carried out on P80-P120 belts. Finishing processing is carried out with the use of belts of the smallest abrasive. Diamond belts of A3k0-A100 grades can be used for this purpose.
The permissible belt speed of the grinder is determined by the substrate material and the strength of the entire structure. A sturdy fabric or synthetic fiber-guided substrate is used as the substrate.
According to the type of grinding material and how it is applied, abrasive belts are divided into categories.
As abrasive grit is applied to the surface:
It is applied to the surface in two ways: open or closed. Each of them provides a certain degree of coverage of the substrate. The first coats no more than 60% of the abrasive surface. The second method provides complete coverage.
The geometry of the grinding belt depends on the grinding machine specifications. The main parameters are length and width. They are all standardized and have several set sizes. Two sizes are available in width: 50 and 100 millimeters. The length is more variable and is equal to 610, 915, 1230, 1600, 1800 millimeters. For some specialized machines, a belt of a given length is available: 2000 mm at a width of 50 mm.
Depending on the characteristics make a choice for wood, metal, polymer surfaces. In some cases, to finish the surface is used emery cloth.