意大利比亚乔热处理标准
It is the distance between the external surface and the point on which Vickers hardness assumes the conventional value of HV = 685 (HRC ~ 59).It is determined as per point 2.1.1The hardened surface may be approximately evaluated, with the help of a centisimal comparator with 20 magnification, considering the area (on a transversal section of the piece) including the external surface and the point on which the coloring of the surface etched by the reactive agent, change from blue to brown - yellow.
The section of the piece is polished and etched with reactive agent Nital 4% for about 30 seconds。 It is the distance between the external surface and the point on which Vickers hardness assumes the conventional value of HV = 685 (HRC ~ 59).
这是从表面处到传统意义上假设的维氏硬度值为685(HRC-59)测定点的距离。
It is determined as per point 2.1.1
这是每个点被确定的方法。
The hardened surface may be approximately evaluated,with the help of a centisimal comparator with 20 magnification,considering the area (on a transversal section of the piece) including the external surface and the point on which the coloring of the surface etched by the reactive agent, change from blue to brown - yellow.
在20倍比较仪器的帮助下，被硬化的表面可以粗略的计算，考虑的区域（在一个横截面上）包括外表面和这个点，在活性剂的酸蚀下，从表面到这个点的颜色从蓝色变为棕黄色。
The section of the piece is polished and etched with reactive agent Nital 4% for about 30 seconds。
切割件抛光后用4%的硝酸酒精溶液腐蚀30秒。
水平有限，仅供参考！
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