焊接工艺手册（Welding process manual）.doc

焊接工艺手册（Welding process manual） General welding procedure specification Release date: 2009-9-29 | reading number: 4651 -------------------------------------------------------------------------------- General welding procedure specification, 2009, Saturday, 08, 15, 16:23, general welding procedure specification General welding process (1) 1 General Provisions This general process is applicable to the welding of various steel pressure vessels by manual arc welding, submerged arc automatic welding, TIG welding and MIG CO2 gas shielded welding. 2 welders 2.1 the welder shall be tested in accordance with the rules for examination of the welders pressure vessel welder, and shall obtain the welder qualification certificate, so that the welding work of the qualified project can be carried out within the period of validity. 2.2 before welding, the welder must know the steel grades, welding materials and welding points of the weldment. 3 welding method 3.1 submerged arc welding is generally used in the following welds 3.1.1 10 = 8 below 60 welds; The 3.1.2 diameter is larger than 1000mm and more than 10mm A, Delta B joint inside and outside the mouth; 600mm = diameter 1000mm A, B joint outside the mouth. 3.2 the following welds are usually hand welded: The 3.2.1 diameter is greater than or equal to 1000mm and less than 10mm A, Delta B joint inside and outside the mouth; 3.2.2 600mm 1000mm diameter A, B joint in the mouth 3.2.3 diameter is larger than 89mm and B over the flange joint outside the mouth; 3.2.4, C and D welds. 3.3 tungsten argon arc welding is generally used in the following welds: The 3.3.1 diameter is greater than or equal to 1000mm and less than 8mm A, Delta B joint backing welding; 3.3.2 600mm 1000mm diameter A, B joint backing welding; 3.3.3 diameter is larger than 89mm and B over the flange joint backing welding; 3.3.4 phi 89mm connection and flange B seam welding; 3.3.5 drawings require argon arc welding of C and D welds. 3.4 the following welds are us