BS ISO 14104:2017规定了检测和分类的程序和要求 通过化学蚀刻方法在地面上局部过热。本国际标准中描述的工艺通常用于地面；然而，事实的确如此 还可用于检测热处理后加工产生的表面异常，如 作为硬车削、铣削和断边（去毛刺）工艺。表面冶金异常 渗碳或脱碳引起的腐蚀也很容易通过该工艺检测到。 不再推荐过去使用的一些方法。规格是 拟更改为使用本国际标准中的方法。这些蚀刻方法是 比大多数硬度测试方法对表面硬度变化更敏感。本国际标准适用于齿轮、轴、花键和轴承等钢制零件。事实并非如此 适用于渗氮零件和不锈钢。应考虑其他方法。注:虽然有时称为“镍酸蚀”，但该工艺并不打算与其他工艺混淆 也被称为“镍蚀刻”。表面回火蚀刻程序应在研磨后和额外精加工前进行 超精加工、喷丸和珩磨等操作。交叉引用:ISO 9712:1999SAE AMS 2759/9:2009 SNT-TC-1购买时可用的所有当前修订版均包含在本文件的购买中。

BS ISO 14104:2017 specifies procedures and requirements for the detection and classification of localized overheating on ground surfaces by chemical etch methods.The process described in this International Standard is typically used on ground surfaces; however, it is also useful for the detection of surface anomalies that result from post-heat treatment machining such as hard turning, milling, and edge breaking (deburring) processes. Surface metallurgical anomalies caused by carburization or decarburization are also readily detectable with this process.Some methods which have been used in the past are no longer recommended. Specifications are intended to be changed to use the methods in this International Standard. These etching methods are more sensitive to changes in surface hardness than most hardness testing methods.This International Standard applies to steel parts such as gears, shafts, splines, and bearings. It is not applicable to nitrided parts and stainless steels. Alternative methods should be considered.NOTE This process, although at times called "nital etch", is not intended to be confused with other processes also known as "nital etch".The surface temper etch procedure is to be performed after grinding and before additional finishing operations such as superfinishing, shot peening, and honing.Cross References:ISO 9712:1999SAE AMS 2759/9:2009ASNT-TC-1AAll current amendments available at time of purchase are included with the purchase of this document.