一种残余应力自平衡的无预热埋弧焊接方法
By designing a double-sided symmetrical welding groove and a double-sided symmetrical simultaneous welding process with specific current and voltage parameters, the problem of cold cracking in the welding of high-strength steel thick plates was solved, achieving efficient, low-cost, and low-carbon welding results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BAOSHAN IRON & STEEL CO LTD
- Filing Date
- 2022-09-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies suffer from cold cracking in the welding of high-strength steel thick plates, which is particularly difficult to avoid under conditions without preheating. Furthermore, high-temperature preheating increases welding costs and energy consumption.
By adopting a double-sided symmetrical welding groove and a double-sided symmetrical simultaneous welding process, and by designing specific welding current and voltage parameters, residual stress self-balancing is achieved, the heat distribution of the molten pool is improved, and welding cold cracks are avoided.
It effectively avoids cold cracking during welding without preheating, reduces welding costs and energy consumption, improves welding efficiency, and achieves green and low-carbon welding.
Smart Images
Figure CN117754092B_ABST