65 hot - rolled rods are widely used in producing the high strength steel wire , but fracture is often happened in drawing . the cause leaded to fracture is the improper drawing technology 摘要65钢热轧圆盘条广泛应用于拉拔高强度钢丝。在拉拔钢丝的过程中断裂现象时有发生。用金相手段分析断裂原因。分析结果认为：导致拉丝断裂的原因是拉丝工艺不当。
The relation between heating - up and being broken for resistanse wire heater is analysed , and the cause of two kands of resistanse wire to be broken is discussed in theory , so the better method of maintaining and repairing this kand of electric heater is found 摘要分析了电热丝加热器发热原理与温升和熔断的关系，并对两种电热丝断裂原因进行了理论上的分析，从而找出对这一类电加热器维护修理的较好方法。
The reason for crankshaft fracture in an mwmtbd234v6 diesel was analyzed . the results show that overheating and overburning is the direct reason for fracture . the heat treatment of the crankshaft is not perfect or consistent with the standard . the lubrication is not good in service . all these accelerate the fracture 分析mwmtbd234v6型柴油机的曲轴断裂原因，结果表明锻件过热过烧是导致断裂的直接原因；曲轴热处理工艺不规范、不完善，曲轴工作润滑条件不良加速了曲轴断裂
