There are two important indicators to evaluate the cutting performance. One is the degree of natural wear and damage of the tool (such as cutting tool, broken tool, sticking tool). Second, strip steel Punching machine The surface quality of the mold processing (such as ripple, edge loss, and beading). Cutting performance is the comprehensive response of cutting tool and cutting effect, and it is difficult to quantitatively analyze indicators.
Rack punching machine During the hot processing of die steel, the metal matrix will undergo a complex phase transformation process. Only we properly control the heating temperature of heat treatment, let the carbide particles in the metal properly blend into the austenite, and homogenize the structure and refine the grains. because Channel steel punching machine High alloy die steel is used, and carbide particles are difficult to be fully integrated. Therefore, properly increasing the heating temperature will make austenite grow, grain coarsen, and strength decrease.
In addition, the strength of the die steel can be improved by properly increasing the undercooling during the cooling process. In addition, eliminate the stress at the grain boundary and improve the cutting quality. During the cooling process, a large amount of stress will be concentrated at the grain boundary, which will deform the die steel and generate large tensile and compressive stresses. This stress is difficult to remove completely, which will have a great impact on the cutting surface and will affect the surface finish of the workpiece. During the cutting process, the cutting resistance is increased. At this time, the effect is improved through failure and stress relief, which can reduce the wear of the tool.
High temperature treatment: As the saying goes, "high temperature cures all diseases". But too high temperature will affect the strength of the rack punching machine mold. This will make the structure crystal refined and distributed more evenly, thus providing the mechanical strength of the structure metal. Relieve tissue stress: this is the key. If measures are not taken in time to eliminate stress, the die steel will crack and deform.
