鼠笼转子铸铝模表面裂纹的分析及材料优化  

Surface Cracks Analysis and Materials optimization on Cast Aluminum Die for Squirrel Cage Rotor

作　　者：曾珊琪[1] 韩艳华[1] 何馥琴 郑梅[1] 

机构地区：[1]陕西科技大学机电工程学院,陕西西安710021 [2]渭南纺织机械厂,陕西渭南714000

出　　处：《热加工工艺》2008年第17期129-131,共3页Hot Working Technology

摘　　要：结合鼠笼转子铸铝模的工作条件,分析出其表面裂纹产生的主要原因是受急热急冷的循环过程产生的热应力而造成的热疲劳破坏。为了提高铸铝模的热疲劳抗力,将原用材料3Cr2W8V改用新材料4Cr5MoSiV1。经过在实际生产中应用,跟踪检测证实,鼠笼转子铸铝模采用新型模具材料后,使用寿命提高了10倍。Aimed at the working condition of cast aluminum die for squirrel cage rotor, the main reason of the cracks on the surface results fi＇om the thermal fatigue failure caused by heat stress, which was brought in the heat recurrence of urgent hot and urgent cold. In order to improve the thermal fatigue resistance of the casting die, the original material 3Cr2W8V was replaced by 4Cr5MoSiV1. After actual production applications, the service life of cast aluminum die for squirrel cage rotor of 4Cr5MoSiV1 is 10 times longer than that of 3Cr2W8V.

关 键 词：鼠笼转子铸铝模 热疲劳裂纹 3CR2W8V 4CR5MOSIV1 模具寿命 

分 类 号：TG241[金属学及工艺—铸造]