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压铸模具型芯失效研究
Study on Core Failure of Die-casting Mould
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- DOI:
- 作者:
- 王卓明
WANG Zhuoming
- 作者单位:
- 广东文灿压铸股份有限公司
Guangdong Wencan Die-casting Co., Ltd., Foshan 528241,China
- 关键词:
- 压铸模具 型芯失效 原因及措施
die-casting mould core failure reasons and measures
- 摘要:
- 以某公司压铸模具为实例,对型芯变形失效进行分析,提出降低型芯失效的应对措施。结果表明,型芯失效的主要形式有型芯折断、型芯弯曲变形、尺寸超差和粘模等。型芯的弯曲变形失效主要是由于受到金属液循环冲击,微小变形积累所造成。型芯失效主要是弯曲变形失效而很少发生热疲劳裂纹失效。Taking a die casting mould of a company as an example, the deformation failure of the mould core was analyzed, and the countermeasures to reduce the failure of the mould core were put forward. The results show that the main types of core failure are core fracture, core bending deformation, size deviation and adhesion. Among them, the failure of core bending deformation is mainly caused by the impact of metal motel circulation and the accumulation of small deformation.The failure of core is mainly the failure of bending deformation and the failure of thermal fatigue crack rarely occurs.