Various methods of cutting stainless steel pipes

Let’s talk about flame cutting first. This is not a very good method, because the stainless steel pipe port will definitely change color during cutting. The melting point of the oxide of chromium-nickel stainless steel is higher than the melting point of the material itself, so it is best not to use oxygen cutting.
Let’s look at carbon arc gouging. This method actually refers to using the arc generated between the graphite rod or carbon rod and the workpiece to melt the metal, and using compressed air to blow it off to process grooves on the surface of the stainless steel pipe. method. However, carbon arcs produce smoke, dust pollution and arc radiation. A large amount of molten and cooled metal residue is easily attached to the inner wall of stainless steel pipes, which is difficult to remove.
As for the wire cutting method, this method can meet the incision quality requirements. However, it should be noted that the stainless steel pipe end will change color after wire cutting and must be polished. The processing speed is very slow and can be used when the production volume is small.
The grinding wheel cutting machine uses an ordinary grinding wheel cutting machine to leave burrs and hanging flash edges after cutting. When used in conjunction with a fully automatic stainless steel pipe end burr remover, it can achieve very good results at a very low cost. However, it will consume a large amount of grinding wheel discs, so it is also suitable for use when the batch size is small.
Automatic instrument lathes are specially designed for cutting very thin-walled stainless steel pipes. It is recommended to use high-quality white steel or sharp steel cutting tools. Although the equipment purchase cost is high, it is very durable and the cut surface is very smooth. The degree of automation in this method is very low and the labor intensity will be relatively high. The efficiency of automated modified instrument lathes or automatic lathes will also be significantly improved, but there is the problem of inconvenient rotation of over-length steel pipes.
The automatic steel pipe rotary cutting machine is similar to the automatic instrument lathe, but it rotates and feeds the tool without moving the pipe, which solves the inconvenience caused by the rotation of over-length steel pipes. The cutting method of using two knives at the same time can be used to achieve cutting with one knife while correcting the section of the steel pipe with the other knife. The processing efficiency is very high. Using carbide cutting tools makes sharpening the cutting tools very convenient. The cutting tools can be sharpened on an ordinary grinder, and the durability of the cutting tools is also relatively high. Automatically realize the functions of steel pipe feeding, sizing, clamping, tool feeding, loosening and other functions, and can automatically cycle.
The metal circular saw method produces good cuts and can cut multiple pieces at the same time. However, the chips easily stick to the tool. Use chrome-plated or nitrided saw blades for cutting. Do not use titanium-plated saw blade tools because many manufacturers In order to obtain high profits, saw blades of poor material are often used for evaporation, causing the cut stainless steel pipes to deform when exposed to heat. Knives need to be sharpened constantly and a special sharpening machine is required. If you are not careful while working, the saw blade will break. Saw blades are quite expensive to use.
Plasma cutting is an automatic plasma cutting machine that cuts very quickly, but there is a large amount of molten and cooled metal residue attached to the inner wall, which is very troublesome to clean. Most plasma cutting generates heat, so the stainless steel pipe port will definitely change color, and parameter adjustment is difficult. Improper use can easily damage the quality of the cut.
The quality of waterjet cutting is better, but the equipment is expensive and the cost of using electricity and consumables is high. Waterjet cutting of stainless steel is not ideal because stainless steel is sticky.
The latter is laser cutting. This cutting method is relatively powerful, has fast cutting speed and good quality, but the equipment is very expensive and is suitable for large-scale processing plants with abundant funds.