摘要
冷镦钢是用于制造螺栓、螺母、铆钉、插销等紧固件的一种重要材料,冷镦性能是材料性能的重要指标。冷镦钢在冷顶锻检验时,顶锻开裂的现象可以归纳为周面脆性开裂、塑性斜向开裂、纵向断续微裂、纵向通长开裂4类主要开裂现象。本文根据断裂力学理论,结合顶锻试样开裂的不同表现,对试样不同开裂情况进行了理论研究,分析了各种开裂现象的产生机理,并据此制定了冷镦钢产品的生产过程中提高冷顶锻性能的相关措施。
Cold heading steel is a kind of functional material used to manufacture constructional parts such as, bolts, nuts, screws, or pins etc. , to which cold heading performance is an essential character. While being cold-headed, wire specimens crack with different performances, which can be concluded into four categories as surface cracks, slant cracks, longitudinal continuous cracks and longitudinal intermittent cracks. Formative mechanisms and originations of different cracks categories are analyzed accordingly in favor of quality control in production process.
出处
《锻压技术》
CAS
CSCD
北大核心
2006年第2期1-4,共4页
Forging & Stamping Technology
