2025-12-17 04:17 浏览次数 9
内表面擦伤
the spot inwall defect of aluminium alloy pipes during extrusion is one of the defects that only occur in the process of extrusion without lubrication.
铝合金管材挤压时在其内表面产生的点状擦伤,是无润滑挤压过程特有的一种表面缺陷。