焊接消耗品.熔焊及相关工艺用气体和气体混合物

[中文适用范围]： 本国际标准规定了用于熔化焊及相关工艺的惰性气体和气体混合物的分类要求，包括但不限于：钨极气体保护焊（工艺 141）；熔化极气体保护焊（工艺 13）；等离子弧焊（工艺 15）；等离子弧切割（工艺 83）；激光焊（工艺 52）；激光切割（工艺 84）；电弧钎焊（工艺 972）。本国际标准的目的是根据气体的化学性质和冶金行为对保护气、 backing 气、工艺气和辅助气进行分类和标识，以便用户正确选择并简化可能的资格认证程序。气体纯度和混合公差按供应商（制造商）交付时的状态规定，而非使用点。气体或气体混合物可以液态或气态形式供应，但在用于焊接及相关工艺时，气体始终以气态形式使用。本国际标准不涵盖燃料气体（如乙炔、天然气、丙烷等）和用于气体激光器的谐振器气体。气体和容器的运输及处理应符合当地、国家和区域标准及法规的要求。 [外文原描述]： ISO 14175:2008 specifies requirements for the classification of gases and gas mixtures used in fusion welding and allied processes including, but not limited to: tungsten arc welding (Process 141); gas-shielded metal arc welding (Process 13); plasma arc welding (Process 15); plasma arc cutting (Process 83); laser welding (Process 52); laser cutting (Process 84); arc braze welding (Process 972). Process numbers are in accordance with ISO 4063. The purpose of ISO 14175:2008 is to classify and designate shielding, backing, process and assist gases in accordance with their chemical properties and metallurgical behaviour as the basis for correct selection by the user and to simplify the possible qualification procedures.