二、口模出料不均匀,造成型材壁厚薄不同等,或者密实度不同等.这也就造成了型材两个面之间的力学性能上的差别,至于壁薄等非标型材这里就不再多说.
Five, the pressure of the die head is not enough. The pressure of the die head is directly determined by the compression ratio of the die, especially the length of the flat section of the die. The compression ratio of the die head is too small or the straight section too short will cause the products not to be dense and affect the physical properties.
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