Experiment results show that removing the surface broken crystal layer of the cold drawn rod can prevent heat treatment induced cracks.
实验结果表明，热处理前去掉冷拉棒表面的碎晶层可以防止它在热处理过程中产生裂纹。
2
Aluminium and aluminium alloys. cold drawn rod bar and tube. part 8 : porthole tubes, tolerances on dimensions and form.
铝及铝合金。 冷拔棒材条材和管材。第8部分：多孔拉拔管尺寸和形状公差。
3
Taking the model S6120 air compressor as an example, this paper presents the cold extrusion process of connecting rod bushes and measures for improving the tools used in the process.