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在热处理行业中,涂料用于防渗或防氧化、脱碳等已屡见不鲜,然而能否将涂料用来实现局部防淬硬和减小热处理变形,却还是一个新课题。有些零件要求在不同的部位具有不同的硬度.为达此目的,一般是采用局部淬火或整体淬火后局部回火来解决的。但是,这些方法有局限性,对部分形状或要求特殊的零件难以实现。如果能将要求低硬度的部位涂覆某种隔热涂料后再热处理,则可能在一个零件上一次性地获得两种硬度。热处理变形是一个难以避免的问题,许多零件,特别是形状复杂,薄壁零件或壁厚
In the heat treatment industry, coatings for impermeable or anti-oxidation, decarburization has been common, but can be used to achieve local anti-hardening coating and reduce the heat treatment deformation, but it is still a new topic. Some parts require different hardness in different parts of.To achieve this goal, the general is the use of local quenching or local hardening after quenching to solve. However, these methods have limitations that are difficult to achieve with some shapes or special parts. If it is possible to apply a heat-insulating coating to parts requiring low hardness and heat treatment, it is possible to obtain both types of hardness on one part at a time. Heat Treatment Deformation is an unavoidable problem with many parts, especially those with complex shapes, thin-walled parts or wall thickness