焊接消耗品 非金属和微粒钢的埋弧焊用实心焊条 包芯焊条电焊条/熔剂制品 分类

[中文适用范围]： 本国际标准规定了在焊接状态和焊后热处理状态下，屈服强度不超过 500 MPa 或抗拉强度不超过 570 MPa 的非合金钢和细晶粒钢埋弧焊的焊条/焊剂组合和焊缝金属的分类要求。一种焊剂可分为不同的实心焊丝和管状药芯焊丝。实心焊丝也基于化学成分单独分类。本国际标准是一项综合规范，规定使用基于屈服强度和焊缝金属平均冲击能 47 J 的系统进行分类，或使用基于抗拉强度和焊缝金属平均冲击能 27 J 的系统进行分类。a) 带有后缀字母“A”的段落和表格仅适用于按照本国际标准使用基于屈服强度和焊缝金属平均冲击能 47 J 的系统分类的焊条/焊剂组合和焊丝电极。 b) 带有后缀字母“B”的条款和表格仅适用于根据本国际标准使用基于抗拉强度和焊缝金属平均冲击能量 27J 的系统分类的焊条/焊剂组合和焊丝。 c) 不带后缀字母“A”或后缀字母“B”的条款和表格适用于根据本国际标准分类的所有焊条/焊剂组合和焊丝。单道焊和双道焊工艺的焊剂以双道焊工艺为基础进行分类。 [外文原描述]： ISO 14171:2016 specifies the requirements for the classification of electrode/flux combinations and weld metal in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding of non-alloy and fine grain steels with minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. One flux can be classified with different solid wire electrodes and tubular cored electrodes. The solid wire electrode is also classified separately based on chemical composition. It is a combined specification providing for classification utilizing a system based upon the yield strength and the average impact energy for weld metal of 47 J, or utilizing a system based upon the tensile strength and the average impact energy for weld metal of 27 J. a) Paragraphs and tables which carry the suffix letter "A" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the yield strength and the average impact energy for weld metal of 47 J, in accordance with ISO 14171:2016. b) Clauses and tables which carry the suffix letter "B" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the tensile strength and the average impact energy for weld metal of 27 J, in accordance with ISO 14171:2016. c) Clauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all electrode/flux combinations and wire electrodes classified in accordance with ISO 14171:2016. Fluxes for the single-run and two-run techniques are classified on the basis of the two-run technique.