焊接耗材 高强度钢气体保护和非气体保护金属电弧焊用管状药芯焊条 分类

[中文适用范围]： 本文件规定了在焊态或焊后热处理状态下，用于焊接最小屈服强度高于 550 MPa 或最小抗拉强度高于 590 MPa 的高强度钢的金属电弧焊的带或不带气体保护的管状药芯焊条的分类要求。如果使用多种保护气体，则可以用不同的保护气体对一根管状药芯焊条进行试验和分类。本文件为一个综合规范，提供使用基于全焊缝金属的屈服强度和 47 J 平均冲击能量的系统进行分类，或使用基于全焊缝金属的抗拉强度和 27 J 平均冲击能量的系统进行分类。— 带有后缀“系统 A”的子条款和表格仅适用于根据本文件给出的基于全焊缝金属的屈服强度和 47 J 平均冲击能量的系统分类的管状药芯焊条。 — 带有后缀“系统 B”的子条款和表格仅适用于根据本文件给出的全焊缝金属的抗拉强度和平均冲击能量 27 J 分类到该系统下的管状药芯焊条。 — 不带后缀“系统 A”或后缀“系统 B”的子条款和表格适用于根据本文件分类的所有管状药芯焊条。众所周知，管状药芯焊条的操作特性可以通过使用脉冲电流进行修改，但就本文件而言，脉冲电流不用于确定焊条分类。 [外文原描述]： This document specifies the requirements for classification of tubular cored electrodes with or without a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with different shielding gases, if used with more than one. This document is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal. — Subclauses and tables which carry the suffix “system A” are applicable only to tubular cored electrodes classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this document. — Subclauses and tables which carry the suffix “system B” are applicable only to tubular cored electrodes classified under the system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document. — Subclauses and tables which do not have either the suffix “system A” or the suffix “system B” are applicable to all tubular cored electrodes classified under this document. It is recognized that the operating characteristics of tubular cored electrodes can be modified by the use of pulsed current but, for the purposes of this document, pulsed current is not used for determining the electrode classification.