一种基于激光熔覆制备中间层的异种金属薄板焊接方法

By combining simulated temperature field and pre-stress with a temperature control system, the problems of deformation and defects in the welding process of dissimilar metal thin plates were solved, achieving efficient and high-quality welding results.

CN120587669BActive Publication Date: 2026-07-17PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Filing Date
2025-07-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are prone to deformation and cracking during the welding of dissimilar metal thin plates due to high heat input and rapid cooling, and the weld structure is prone to defects, affecting welding quality and efficiency.

Method used

Numerical analysis software is used to simulate temperature field changes. Combined with pre-stress and temperature control system, the temperature and deformation during laser cladding and welding are controlled. By applying pre-stress to the fixture and using temperature control system to keep the substrate temperature within the normal range, laser welding is performed after the intermediate layer is prepared.

Benefits of technology

Effectively control deformation during the welding process, improve welding quality and efficiency, ensure dense and defect-free welds, and enhance the welding performance of dissimilar metal sheets.

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Abstract

本发明公开了一种基于激光熔覆制备中间层的异种金属薄板焊接方法,本发明对钛‑钢异种金属薄板的焊接方法进行改进,采用温度场、应力及应变场模拟与预应力法相结合,控制基板表面激光熔覆过程中的基板变形;本发明在激光熔覆和激光焊接过程中,都采用温控系统设备对基板的温度场进行控制,能够有效将基板的温度控制在正常范围内,并能够维持熔覆有中间层的基板的温度在正常范围内,有助于焊接时激光能量的减小,进而控制焊接过程中的变形、提高焊接效率,实现对异种金属薄板的高效高质量焊接。
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