How to avoid the formation of chip tumors in fully automatic pipe cutting machines?

Measures to avoid the formation of chip tumors in fully automatic pipe cutting machines:

1. Increasing the rake angle of the tool, grinding the front of the tool, and using cutting fluid can all reduce cutting deformation and friction, avoiding the formation of chip lumps.

2. Work hardening
The phenomenon of increased hardness and decreased plasticity on the surface after cutting is called work hardening. The depth of the hardened layer is 0 Between 07-0.5mm, the hardness is 1.2-2 times the original hardness of the deformed material on the processed surface of the material.

3. The fully automatic pipe cutting machine adopts high-speed or low-speed cutting. Practice has proven that cutting medium carbon steel at speeds below 2m/min or above 100m/min will not result in the formation of chip lumps. Under these two conditions, the friction coefficient between steel and tool material is relatively small, so it is not easy to produce chip lumps. When the fully automatic pipe cutting machine cuts at medium speed, the temperature in the cutting area increases the friction coefficient between the steel and the tool material, making it easy to produce chip lumps. When the temperature in the cutting area is around 300 ℃, the height of chip deposits is the highest.   

For surfaces that still need to be cut, the presence of a hardened layer increases the difficulty of the next cutting. Based on the above reasons, work hardening should be minimized as much as possible during cutting. The hardened layer generated during cutting has uneven hardness and depth, and often produces small cracks. This is detrimental to the quality of the processed surface. When the fully automatic pipe cutting machine has a low or high cutting speed, the temperature in the cutting area is also low or high.

For more professional issues, please consult Fengshun Technical Consultant, and we will provide you with suitable solutions.