How to develop a welding procedure qualification procedure New
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(1) Recheck the welding rod and steel material sheets, and conduct retests on chemical composition and mechanical properties if necessary. (2) Assessing the weldability of steel: The carbon equivalent formula recommended by the International Welding Society is: Cqe = C + Mn/6 + Si/6 + Cr/5 + Mo/5 + V/5 + Ni/15 + Cu/15. (3) Understanding the welding characteristics of steel. (4) Selecting welding materials and determining the welding method. (5) Design the joint type and groove dimensions. (6) Determine the welding wire energy and other welding parameters. (7) Determine the welding specification parameters. (8) Determine the welding position. Plates can replace tubes, and tubes can replace plates. (9) Determine the protection method for the welding process. (10) Requirements for the welding process in terms of operational techniques. (11) Specifications and requirements for preheating, interlayer temperature, post-heating, and post-weld heat treatment. (12) Welded test pieces and test piece inspection (13) Welding procedure qualification reports. If newly registered special equipment manufacturing and lifting machinery factories (or companies) need technical support, please contact me. 18913159769
The steps for developing a welding procedure qualification procedure are as follows: 1. Review the material data sheets for the electrodes and steel, and conduct retests on the chemical composition and mechanical properties of the materials if necessary. 2. Use the carbon equivalent formula recommended by the International Welding Institute to determine the weldability of steel: Cqe = C + Mn/6 + Si/6 + Cr/5 + Mo/5 + V/5 + Ni/15 + Cu/15. 3. Understand the welding characteristics of the selected steel material. 4. Select appropriate welding materials and welding methods. 5. Design the type of joint and the dimensions of the groove. 6. Determine the welding heat input and other welding parameters. 7. Determine the specification parameters for welding. 8. Determine the welding position. Note that plates can be used in place of pipes for welding, and vice versa. 9. Determine the protection method for the welding process. 10. Welding must be carried out in strict accordance with the operational technical requirements. 11. Specify the standards and requirements for preheating, interlayer temperature, post-heating, and post-weld heat treatment. 12. Fabricate welding specimens and inspect them. 13. Prepare a complete welding procedure qualification report. The above steps ensure the proper evaluation and implementation of the welding process. For further technical support, please contact the relevant experts. .