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如何减小和控制热处理变形,是人们十分关注的问题,我厂经过长期的实践和摸索,总结出了一些有效方法,现介绍如下。要减小和控制热处理变形,不能单从热处理过程中寻求解决,必须从工件的设计,材料的选择入手,冷热加工密切配合,才能取得比较理想的效果. 1.合理设计工件形状合理设计工件形状,对减小和控制热处理变形非常有益,必须尽可能把工件设计成对称、均匀,防止太长,太细,太薄、尖角等截面相差悬殊的部分出现。在技术要求方面硬度值应取下限.在工艺流程中力求冷热加工密切配合,对一些易变形的工件在设计时应采取必要的措施,如适当增加工艺孔和加工余量;一些工
How to reduce and control the deformation of heat treatment, people are very concerned about the problem, our plant after long-term practice and exploration, summed up a number of effective methods are presented below. To reduce and control the deformation of heat treatment, heat treatment can not be resolved only from the design of the workpiece, the choice of materials, hot and cold processing in close cooperation in order to achieve the desired results. 1. Rational design of the workpiece shape Reasonable design of the workpiece Shape, to reduce and control the deformation of heat treatment is very useful, as far as possible the workpiece should be designed to be symmetrical, uniform, to prevent too long, too thin, too thin, sharp corners and other sections are very different parts appear. In the technical requirements of the hardness value should take the lower limit. In the process of seeking close cooperation of hot and cold processing, some of the deformation of the workpiece in the design should take the necessary measures, such as the appropriate increase in processing holes and allowances; some workers