标准摘要
[中文适用范围]： 该文件规定了采用电弧焊工艺并使用填充材料对马氏体钢、贝氏体钢和铁素体钢焊缝金属进行扩散氢测定的采样和分析程序。规定的技术包括通过汞置换法收集扩散氢或收集到充满氩气等惰性气体的顶空空间中。收集到的氢量分别通过测量置换体积和通过热导率等方法确定。收集扩散氢的温度受到控制，以避免非扩散氢的热激活。 [外文原描述]： This document specifies the sampling and analytical procedure for the determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal arising from the welding of such steels using arc welding processes with filler material. The techniques specified in this document include collection of diffusible hydrogen via displacement of mercury or collection into a headspace filled with an inert gas such as argon. The amount of hydrogen collected is determined by measuring the displaced volume in the former and by, for example, thermal conductivity in the latter. The temperature for collection of diffusible hydrogen is controlled to avoid thermal activation of non-diffusible hydrogen. NOTE Recommendations and restrictions in regard to older methods of measurement using glycerine are given in Annex B for any comparison work to these older methods.
英文名称Welding and allied processes — Determination of hydrogen content in arc weld metal