大型40Mn轴锻件缺陷分析

Defects Analysis on Heavy Duty 40Mn Shaft Forgings

大型40Mn轴锻件在进行超声检测时,发现存在密集缺陷。经对缺陷取试分析,确定了缺陷的类型为Nb碳化物。通过优化化学成分内控,解决了缺陷问题。

Close defects have been found in heavy duty 40Mn shaft forgings by ultrasonic detection, and by analy-zing the defect sample, it concluded that Nb carbide was cause of the defects, further internal control of chemical com-positions has been optimized to eliminate detects.