Some factors related to the surface crack of aluminum profiles

When we use aluminum, we will find that the surface of many materials will produce longitudinal fish sparkling repetitive partition lines,

serious direct disconnection and separation. These cracks will seriously affect the performance of Aluminum Profiles, 

and lead to the causes of such defects and related measures, the following Ningbo Vito for you to make the following detailed explanation.

Causes of surface cracks on Aluminum Profiles:

(a): aluminum extrusion coefficient is too large, extrusion temperature is too high (rod, cylinder, die three temperature), extrusion speed is too fast.

(2): the extrusion pressure is unstable, up and down, or the speed difference between the multi-gear speed adjustment is obvious, and the speed conversion is fast when the gear is shifting.

(3): Aluminum alloy profile extrusion head pressure (stamping) too fast, tail running speed or not decelerated, a large number of dead aluminum infiltration.

(4): The rod quality is poor, the rod overburning, large grain, loose. The residual pressure (V3 aluminum) is too thin.

(5): the velocity ratio of the extrusion die is seriously maladjusted. The design and manufacture are unreasonable.