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硬度不足是工具热处理过程中的重要缺陷之一,它降低了工具的使用寿命,严重者会直接成为废品。所谓硬度不足是针对各种不同产品的具体硬度要求而言。凡低于产品技术条件规定的硬度时,均称为硬度不足。硬度不足表现为两种形式:一是整个产品硬度值低;二是局部硬度低(包括软点)。造成工具热处理硬度不足的原因很多,本文根据我厂和有关厂家在生产中遇到的一些情况,谈一下Cr12AMoV钢工具在热处理过程中产生硬度不足的原因及预防措施和解决办法。
Insufficient hardness is one of the major drawbacks of the tool heat treatment process, which reduces the service life of the tool, in serious cases will be directly into waste. The so-called lack of hardness is for a variety of different products in terms of specific hardness requirements. Any lower than the provisions of the product of hardness, are referred to as lack of hardness. Hardness is manifested in two forms: First, the entire product hardness value is low; Second, the local hardness is low (including the soft point). There are many reasons for the lack of hardness of the tool heat treatment. In this paper, according to some situations encountered by our factory and related manufacturers in the production, to talk about the reasons for the lack of hardness of Cr12AMoV steel tool in the heat treatment process and preventive measures and solutions.