一种高强钢厚板无预热焊接方法
By optimizing the welding groove shape and process parameters, and combining them with austenitic welding materials, the problem of cold cracking in the preheat-free 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 difficult to avoid, especially under conditions without preheating. Furthermore, the welding process is energy-intensive and generates significant carbon emissions, making it difficult to meet the requirements of green and low-carbon development.
By employing optimized welding groove design, welding process parameter matching, and post-weld cold cracking sensitivity assessment and feedback, combined with the strength matching of austenitic welding materials and high-strength steel, cold cracking is avoided under preheating conditions through gas metal arc welding and submerged arc automatic welding methods, thus optimizing welding heat input and residual stress.
It enables preheat-free welding of high-strength steel thick plates, avoiding cold cracks, reducing welding costs and energy consumption, reducing carbon emissions, and improving welding efficiency, making it suitable for engineering applications.
Smart Images
Figure CN117754091B_ABST