Affect the machining work hardening What are the main factors
News source：StationRelease date：2014-12-30Publisher：admin
Theoretically machining process in order to achieve accurate surface machining parts, need to adopt the principles and ideals of machining precision shaping movement. However, in practical work, precision machining process principle is difficult to achieve, with a big gap between the ideal value, if accurate theory in order to pursue a single, often seriously affect the processing efficiency, reach the expected economic benefits.
The main factors affecting the machining work hardening are the following:
1, the material to be machined factors: the material to be machined small hardness, the greater the degree of plasticity of the material work hardening of the more serious.2, the shape factor of the tool: the rake angle of the tool, and the amount of wear of the tool edge fillet behind a great influence on the work hardening layer. The rake angle decreases, the amount of wear when the cutting edge and the back increases, work hardening layer depth and hardness increases.
3. Cutting factors: cutting speed and feed rate changes have a greater impact on the work hardening. When the cutting speed increases, the contact time between the tool and the workpiece is short, a small degree of plastic deformation, the hardened layer and hardness are reduced. Feed rate increases, increase the degree of plastic deformation, increase the surface cold work hardening. In this paper, key words:
