1. The heat treatment quality of the aluminum profile extrusion die directly affects the service life of the extrusion die, and the die has been quenched and tempered several times to meet the hardness requirements. Quenching is to improve the hardness of the die, and multiple tempering is to improve the toughness of the die and stabilize the internal structure. The hardness value of mold heat treatment stipulates:

Large aluminum extrusion die (F & gt500mm), HRC 45-48; Medium-sized mold (F300~500mm), HRC 47-50; Small extrusion die (f

2, extrusion die heat treatment process should pay special attention to the following points:

A, the high temperature section should be heated quickly, and the heat preservation time should not be too long to prevent the extrusion die from overheating or overheating, overheating-coarse grain, overheating-low melting point elements and inclusions from dissolving;

B, aluminum extrusion die should be tempered in time after quenching to prevent cracks;

C. If the hardness of the extrusion die is insufficient or uneven after heat treatment, it should be annealed again according to the process (when the hardness value is heat treated);

D, for large aluminum extrusion dies or finished dies with complicated cavities, a stress relieving and tempering procedure (stress relieving of electric machining and mechanical machining, i.e. thermal stress and tissue stress relieving) should be added;

E. What should be the quenching oil temperature of the mold? 100 c to ensure the quenching effect. I'll tell you more about the hook net.