Die steel parts need surface heat treatment processing, hardness tester can accurately measure die steel in different situations, so hardness tester is essential in hardness testing, but many people do not have a deep understanding of heat treatment, so the following Jinan die steel editor will introduce hardness testing after heat treatment.

对于测试表面是0.05的表皮硬化金属，维氏硬度计的测量是精准的。选用0.5100KG的实验力，可直接检测零部件金属表面的硬度差变化。有效硬化层深度可是维氏硬度计针对的测量对象，如果制作部件需要进行表面热处理加工或大量使用表面热处理工件的单位，那么此类硬度计是必不可少的。

The Vickers hardness tester is accurate for the epidermis hardened metal whose test surface is 0.05. The experimental force of 0.5 to 100kg can be used to directly detect the change of hardness difference on the metal surface of parts. The effective depth of hardened layer is the measurement object of Vickers hardness tester. If the surface heat treatment processing is needed or the unit of surface heat treatment workpiece is widely used, then this kind of hardness tester is essential.

如果需要测试有效硬化深度超过0.1MM的各种表面硬化工件那么可以选用表面洛氏硬度计。尽管表面洛氏硬度计的精度比维氏的偏低，但是针对一般工厂部件的检测水平精度，已经能够满足要求。

If it is necessary to test various surface hardened workpieces with effective hardening depth more than 0.1 mm, surface Rockwell hardness tester can be selected. Although the accuracy of surface Rockwell hardness tester is lower than that of Vickers, the detection level accuracy of General Factory parts can meet the requirements.

而且偏低，检测迅速，方便易用是这类产品的优势，利用洛氏硬度计可对成批的表面热处理工件进行快速无损的单件检测。这一点对于金属加工和机械制造工厂带来了非同寻常的便利。

The advantages of this kind of products are low price, rapid detection and easy to use. The Rockwell hardness tester can be used for rapid and non-destructive single piece detection of batch surface heat-treated workpieces. This brings extraordinary convenience to metal processing and machinery manufacturing plants.