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汽车制动鼓失效形式与铸造工艺的优化
Failure Mode and Casting Process Optimization of Automobile Brake Drum
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- DOI:
- 作者:
- 于翔海1陶磊1于伟莉2张象中1李建1秦鹏鹏1江豪1
YU Xiang hai 1 , TAO Lei 1 , YU Weili 2 , ZHANG Xiangzhong 1 , LI Jian 1 , QIN Pengpeng 1 , JIANG Hao 1
- 作者单位:
- 1. 驻马店中集华骏铸造有限公司2. 珠海格力电器股份有限公司
1.Zhumadian CIMC Huajun Casting Co., Ltd., Zhumadian 463000, China; 2. Gree Electric Appliances, Inc.of Guangdong, Zhuhai 519000, China
- 关键词:
- 皲裂;等轴晶;柱状晶;底注;抗热疲劳;
cracks; isometric crystal; columnar crystal; bottom note; resistance to thermal fatigue
- 摘要:
- 载重汽车制动鼓的制动面出现纵向裂纹比龟裂纹危害性大。 制动面柱状晶短、中心部位等轴晶多而细，能
有效避免纵向裂纹的产生。 底注铸造工艺使制动鼓上部制动面位置产生成大量的细等轴晶，抑制了下部柱状晶的
生长。
Longitudinal crack on brake surface of truck brake drum is more harmful than network cracks. The short
columnar crystal on the braking surface and the fine equiaxed crystal in the center can effectively avoid the generation of
longitudinal cracks. The bottom pouring casting process produces a large number of fine equiaxed grains at the upper brake
surface of the brake drum, which inhibits the growth of columnar grains at the lower part.