论文部分内容阅读
导言作为维修的一项最基本的任务,是保证生产所用的机械设备在下一次维修之前的整个期间顺利地发挥其功能。对于那些所用机械已经超过保证期的老厂而言,这项任务是尤应重视的。由于逐步增加设备输出能力时往往置设备的可靠性于不顾,因此,情况就可能更为严重。机械的各种薄弱环节开始暴露,到了一定的阶段,就会产生越来越频繁的突发故障。因此而出现的生产停机常常造成相当可观的费用损失,其中,由于材料原因造成的故障次数也占有一定的比重,但其比例数较小,约为2.5%。为了降低机械故障所引起的生产停机的频率,方法之一是慎重地选择重要机器零部件的
Introduction As one of the most basic tasks of maintenance, it is to ensure that the machinery and equipment used in the production will perform its functions smoothly throughout the period prior to the next maintenance. This task is of particular importance to those older plants whose machinery has been used beyond the warranty period. As equipment reliability is often neglected as equipment output increases step-by-step, the situation can be even worse. Various mechanical weaknesses began to be exposed, to a certain stage, it will have more and more frequent sudden failure. As a result, production downtime often resulted in considerable cost losses, of which the number of failures due to materials also accounted for a certain proportion, but at a smaller proportion of 2.5%. In order to reduce the frequency of production downtime caused by mechanical failure, one of the methods is to carefully select the critical machine components