论LD31铝合金型材“白点”产生原因及防止措施

Reason of White point defect of LD31 Aluminium Alloy shapes discussed and Its measurement

通过到ＬＤ３１铝合金型材产生的“白点”缺陷进行研究，找出了其产生的原因是铸锭的组织缺陷──疏松和气孔所致，进而结合生产实际提出了行之有效的防止措施。

White point defect of LD31 Aluminium Alloy shapes has been Analyzed,Its reason has been found,lt's macroscopic structure defect of ingot,the defend measure has been advanced.