某型号导引头电子组件柔性互连技术研究

导引头系列产品中,非规则线缆的广泛应用、大批量需求及纯手工制作的生产特点,已满足不了导引头生产装配的自动化发展需求。针对导引头系列产品的小型化、轻量化、集成化发展趋势,需要一种新型电气互连方式来解决产品生产过程中非规则线缆制作这一瓶颈问题。利用电子组件柔性互连技术,采用刚柔结合印制板制造形式,实现了电信号在导引头内的稳定传输与可靠连接,经过抗载验证,满足了导引头抗载应用需求,达到了导引头非规则线缆自动化、批量化制作的目的。

Experimental study on the causes of cracking of high-strength steel during bending

This paper studies the chemical composition, tensile properties, inclusions, metallogrophic structure, and other such parameters to identify the causes of cracking during the bending of high-strength steel. The results show that the major causes of cracking are the original transverse cracks or holes on the surface of the slab and the presence of scales rolled into the cracks or holes. Cold fracturing from such defects is rare, and can be eleminated by enhancing the control of the steelmaking process and by mechanical clean-up of the surface cracks and holes in the slab.