How to grind a weld angle grinder

How to grind a weld with an angle grinder

The easiest option for mechanical cleaning is hand brushing with a wire brush. However, it is much easier and more effective to perform such treatment with a portable grinder or an ordinary angle grinder, equipped with a petal grinding nozzle or abrasive wheel. With this method you can get rid of many defects in the weld:

This technology is also loved by many masters of welding works for the fact that in terms of price-quality ratio it is almost the most profitable.

However, it is very important to choose the right grinding wheel, otherwise you can not count on a great result. It is also important that the petals have a fabric backing, because it is more reliable and durable than the paper backing, which is necessary for such an aggressive type of work as grinding weld seams. It should be noted that the tips with a fabric base, and even with a coating of aluminum zirconate is much more expensive than conventional paper tips with aluminum oxide sputtering, but the price is worth it. the work will be both easier and more effective

In addition, the use of such nozzles minimizes the possibility of corrosion in the place of grinding, which is very important for high-quality performance of responsible work

It is worth noting that cloth backed and alumina zirconate coated nozzles are significantly more expensive than common alumina paper nozzles, but the price is worth it. the work will be easier and more efficient

In addition, the use of such nozzles minimizes the possibility of corrosion in the place of grinding, which is very important for quality performance of responsible work. It is also important that the pads have a cloth backing because it is stronger and more durable than a paper backing, which is necessary for such an aggressive application as grinding weld seams

It should be noted that fabric backed nozzles, and even with aluminum zirconate coating, are much more expensive than conventional paper nozzles with aluminum oxide spraying, but the price is worth it. the work will be both easier and more efficient

It is also important that the pads have a fabric backing, because it is more reliable and hardy than the paper backing, which is necessary for such an aggressive type of work as grinding weld seams. It should be noted that cloth-backed nozzles, and even with aluminum zirconate coating, are significantly more expensive than conventional paper-based nozzles with aluminum oxide spraying, but the price is worth it. the work will be both easier and more efficient. Also, the use of such tips minimizes the possibility of corrosion formation at the place of grinding, which is very important for quality performance of responsible work

In addition, the use of such nozzles minimizes the possibility of corrosion in the place of grinding, which is very important for quality performance of responsible work. Depending on the scale and fineness of the work to be performed, you should use nozzles with different sizes of abrasive grit. the product line of the major manufacturers offers a variety of grit sizes, so you need to have several sizes in your arsenal

All the more so that to perform high quality work will require consistent processing of different nozzles with a reduction in the size of the grain

Depending on the scale and subtlety of the work performed, you should use nozzles with different sizes of abrasive grains. the product line of the major manufacturers offer a variety of grain sizes, so you need to have a few sizes in the arsenal. All the more so, to perform high quality work will require consecutive processing with different nozzles with decreasing grain size.

The size should be changed consistently, skipping can not be more than one size. And if you want to achieve a mirror-like smoothness and shine of the weld, it is forbidden to skip even 1 size. Otherwise an unprocessed risk can appear, and the whole work has to be started from the beginning.

Complicated and at the same time responsible is the grinding of welding seams in inaccessible places. cavities, holes, on thin edges, there are special tools. burrs, which are mounted in a straight grinder. Bores have many different shapes and sizes, so it is not difficult to choose the right tool for the job.

Features

Deburring of welding seams after welding is a necessary procedure. During the process, the metal parts are intensely heated to its melting point, causing stress inside and altering the shape. In addition, fine particles and slag will form on the welds. Currently, there are a large number of all kinds of methods and techniques that can remove welding seams from metal products. It can be done both with the help of special tools (emery, miller), and manually with the help of wire brushes.

Tool choice

Support the project: account P87010548 (at least in any way that is comfortable for you) WebMoney Z118921972326.

How to properly process welding seams #painting #paintingauto #how to paint #garage #onb #brest #auto repair.

To grind a weld after welding must be approached personally, the right equipment, consumables.

For example, a tool will be found in the role of a tool:

• In the shipbuilding industry are well used grinders mobile type, because the iron structure of fairly large size is much easier to approach than to continuously move the tool from one area to another.

Quality Control

When carrying out welding works and grouting of the formed seams on the metal, you should be guided by the rules and regulations set out in GOST 31385-2008 (requirements for welding and quality control of welded joints). In this GOST you can find general requirements for such work, separate requirements for various properties of products (strength, toughness, technological bending tests of such joints).

You can also find there some tables with maximum values of convexity of seams in millimeters (depending on their size), a list of methods which allow to control the quality of welded joints.

On how to perfectly strip welds on profile pipe, you can learn from the video below.

Thermal processing

It is used in those cases when it is necessary to deburr the residual stresses of the internal part. Heat treatment is necessary when welding thin-walled metal structures. The essence of the procedure is that the finished construction is heated to a certain temperature, and then cooled down according to a certain temperature schedule.

All work is done in three stages. Initially, the joint and the working surface around it are heated. It should be kept warm for a short period of time (second stage) and then cool naturally (third and final stage). Due to such simple manipulations the strength and plasticity of the metal in the area of the weld is restored.

The heat treatment technology has a significant disadvantage. If you can not perform all manipulations exactly according to the temperature schedule, it is very difficult to correct the situation. There are no simple solutions. Expensive equipment and professional services of a similarly experienced person are required.

It is possible to control the temperature control in different ways. The most common measurements are with a pyrometer. A thermal imaging camera can be used. A special device that measures the temperature of an object from a distance. Less effective methods of control using thermal paint or a thermal pencil, which change its hue depending on the temperature of the metal. Practical skills are required to use them.

Question:

When welding works, welding of several sheets, a seam is formed. Its stripping and is called flush. It is necessary to understand what are the requirements for cleaning such a weld. What regulatory documents establish these requirements?

Mechanical cleaning of the butt joint

How to grind welding seams with an angle grinder? The simplest method of mechanical action is manual scraping with an angle grinder. In this case you can get rid of the defects that are inevitable in welding:

Many people say that this method is economical, and it is a proven fact.

Deburring welds will be done professionally if you choose the right grinding wheel.”

Cleaning weld seams with an angle grinder

The easiest mechanical way to cleanse the weld is to use an angle grinder. The angle grinder can quickly remove excess weld and slag residue, but it is important to be careful not to damage the part itself, and not to break the weld joint.

It is better to use a flap wheel for desanding. To get the most neatly processed surface, you should choose the right abrasive.

It is better to sand the weld with a cloth based flap disc instead of a paper disc. Such a circle will be significantly more expensive than its counterpart, especially if you choose a variant coated with aluminum zirconate rather than its oxide. But at the same time the effectiveness of such a disk is many times higher, as well as the result of the work.

How to clean welds after welding

(Last Updated On: 03.10.2017)

Welding is today one of the most common technologies for fastening metal parts, because it is when you weld the surface is possible to obtain a homogeneous connection that does not leak moisture and provides a strong bonding of the elements. However, the weld itself is a weak point of the structure, which should be protected from premature damage and destruction. Therefore an obligatory stage of any welding work is the cleaning of the welds after welding. the need for such work is a norm, fixed in GOST 9.402-80 “Unified system of protection against corrosion and aging. Paint coatings. Preparation of metal surfaces before painting”. Various tools can be used for such works, which have various influence on the treated surface. it can be both ordinary mechanical grinding, and chemical etching, and neutralization. Each of these technologies has its own characteristics and indications for use.

How to clean the weld after welding

How to correctly clean a welding seam

The most common mistake of all novice welders to take hold of an angle grinder and cut the hell out of all the metal that he had just melted into the seam. This comes from doing your job very conscientiously. But seriously, the weld after welding a little grind with the grinder and at the end as if lick it too. That way the weld will remain almost intact and the weld will get a neat look and will look like one piece. Interestingly, with this approach, the place where there is a weld has never been cracked and will not split and crack under different kinds of loads only nearby, but provided that the thickness of the metal is not great about 2. 3 mm.

When deburring a weld, it is important to understand that as much metal as possible should remain after the weld has been finished with an angle grinder. The disc for cleaning should be no less than 3mm thick. If the grinding disc will be thinner then at the slightest pushing it will bend and this will lead to a breakage of the disc with the subsequent time flying at all sides. Which can be dangerous to your life. Therefore, if you are not confident in your tool, it is better not to start stripping.

After you have welded two steel elements, by the edges of the weld are all sorts of scale and slag in the area of 2-3 inches around the seam they must also be cleaned simultaneously, otherwise after you paint the place in this case not zastichiviv to the end, the paint immediately all reveal and will not be terribly beautiful. In areas where you can not reach with an angle grinder is used a flat chisel or file put on the seam and a hammer to knock down scale and slag. A well grinded product can be seen without an unaided eye.

If you welded a sheet of iron to any framework, the welding sites should first be grinded angle grinder and then another must necessarily go through a wire disc. it is a metal round casing with a nut welded inside. Long thin steel wires are fixed inside this cage. You remove the disc after stripping, put a wire disc and go through the places of welding and thus removing all kinds of debris that remained after welding (scale, slag). What would not waste time in vain for the rearrangement of cutting disc on a wire disc, you can have on hand a second angle grinder which will already have a wire disc. The place of the passage of the sheet to the profile is very difficult for stripping wheel on this requires a wire wheel.

Stripping is very time consuming and requires a lot of attention, effort and patience. It largely depends on them whether the welded product after painting will look beautiful and neat, aesthetic and professional. If you want your work to be appreciated it should be done in good faith.