Analysis Of Redundant Arc Die Process of Seamless Steel Pipe

Seamless steel pipe and erw steel pipe due to the differences in the level of craftsmanship and quality control capabilities of the manufacturers, there is a slight difference in the shape and size of the same specification, the same model, not the same. It is normal that the same type of pipe deformation is plus or minus 1 mm. It is these differences, which are not the same, that restrict the wide application of punching and arcing machinery in this field!

The square tube and the tube used for punching are divided into core punching and coreless punching. The core is added to the tube. This is called core punching. The core mold manufacturing is more simple than the coreless mold, the price is relatively cheap, and can better prevent the punching, deformation, collapse, it is widely used. The coreless die punching is not called in the pipe without mandrel. The coreless mould process is more complex and the price is higher, so it is difficult to promote; we know that the punching machine does not punch down when punching the arc, but cuts it by shearing force. As with our usual scissors. The clearance should not be too large. If it is too small, it will cause burrs when the pipe is punched, it will not move, it will not move, or the core will be damaged. In fact, the core of punching machine manufacturing is the design and manufacture of molds.

We all hope that the punching machines we bought will not only be fast and efficient, but also punch the same type and different wall thickness; punching will be free of burrs, and there will be no collapse; The tubes you can buy from the market are slightly different from the tubes of the same type. They are not the same. The difference between them is normal, and the difference between the ovals of some tubes is up to 2mm. When you buy a punching machine, it is impossible to give them. You are equipped with countless cores to make you right?

What's more, you can buy different pipes in the market. It can be exactly the same as the shape of your mold. Can't find it on the pipe at all? When not the same, slightly different. What if the mold core is too big and too small? If it is too big, it will not fit into the tube. If it is too small, the clearance will be too high and it will easily sink. Are you thinking that the tube is slightly larger and the mold core won't wander inside the mold? Can the punch align with the core eye? Does the punch not punch the mold core all at once? Even if it does not rush to the mold core, the punch will be eccentric in the hole of the mold core. Can you think of the holes that are punched out without any burr? The hole machine bottleneck problem, that punching machine can use it?

If the tube is too small, then you don't have to think about it. Even if the mold core doesn't fit in, can you punch it? These are the restrictive applications of punching machines in this field. However, we have taken the lead in resolving the core issues that have plagued the development of punching machines. For the first time in the country launched "indefinite tube" mold. The advantage of this mold is that no matter how the pipe size changes, the roughness of the welding hole in the tube cavity can be punched with a set of molds to ensure that the punching is in the middle line, to ensure no burr and no collapse. To ensure that all the tubes can be pushed and pulled in the mold, twitch freely, and flexible.