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2号脱模机是鞍钢生产过程中大型设备之一,其中断裂零件是脱模起重机上横行主动车轮断裂破坏。1988年6月份前、后断了两次,由于生产紧张换上新轴工作,没有深入探讨原因。该断轴是3～4年前大连起重机厂设计的,此次断轴是其中断了两次之一。2号轮轴断裂频繁,动作变化繁多,受到电动机扭转力矩的反复作用下,2号主动轴间隔一周左右时间断了两次。该断轴是按原设计175吨安全销最大受力状态进行失效分析。该断轴傲了宏观断口检查和分析、化学检验、金相夹杂物分析、低倍检查,以及微观断口形态扫描电镜观察和分析。初步做受力分析和强度核算,并查找断裂的原因和提出预防措施。
2 stripping machine is one of the large-scale equipment in the production process of Ansteel, in which the broken parts are the breaking and destruction of the active wheels on the transverse runways of the demoulding cranes. Before June 1988, after the break twice, due to production tension put on a new axis of work, there is no in-depth discussion of the reasons. The broken axis is 3 to 4 years ago Dalian crane factory design, the broken axis is one of its interrupted twice. No. 2 wheel frequent fractures, a wide range of movements, by the torque of the motor repeatedly under the effect, the No. 2 drive shaft separated by a week or so twice a week off. The broken axis is based on the original design of the maximum stress of 175 tons safety pin failure analysis. The broken axis proud of the macroscopic fracture inspection and analysis, chemical examination, metallographic inclusion analysis, low magnification inspection, and microscopic fracture morphology scanning electron microscopy and analysis. Initial analysis of force and strength calculation, and find the cause of the fracture and put forward preventive measures.