基于型腔约束的水下多电极焊接与增材装置及使用方法

The underwater multi-electrode welding and additive manufacturing device with cavity constraint solves the problems of arc disturbance and hydrogen-oxygen intrusion in underwater welding and additive manufacturing, realizes stable arc heat input and controllable cooling, and improves the forming quality and consistency of underwater welding and additive manufacturing.

CN122231408BActive Publication Date: 2026-07-17QINGDAO HARBIN INSTITUTE OF TECHNOLOGY (WEIHAI)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO HARBIN INSTITUTE OF TECHNOLOGY (WEIHAI)
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing underwater welding and additive manufacturing technologies suffer from problems such as unstable arc disturbances, high risk of hydrogen and oxygen intrusion, uncontrollable cooling rates, and difficulty in ensuring consistent forming quality in underwater environments.

Method used

An underwater multi-electrode welding and additive manufacturing device based on cavity constraints is adopted. A local dry process space is constructed by water-cooled copper cavity and outer protective cover. Step-by-step drainage and replacement are achieved by combining cavity gas valve and protective cover gas valve. The gas pressure is controlled by a balanced pressure relief valve. With the help of multi-electrode welding torch and slag conveying, a stable arc heat-slag pool synergistic energy supply is formed. A controllable cooling boundary is constructed by water-cooled copper cavity and liner plate.

Benefits of technology

This technology improves the stability and forming accuracy of underwater welding and additive manufacturing processes, reduces the risk of hydrogen and oxygen intrusion, enhances forming consistency and deposition efficiency, and reduces the risk of defects.

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Abstract

本发明涉及水下焊接与增材技术领域，具体涉及一种基于型腔约束的水下多电极焊接与增材装置及使用方法。该装置通过水冷铜型腔与外层保护罩构建双层局部隔水控气空间，并通过型腔气阀、保护罩气阀及平衡泄压阀实现分步排水、持续通气、压差隔水及废气烟尘排出；焊接与增材过程中，起始阶段由焊枪电弧熔化焊丝及渣料，在水冷铜型腔内形成初始熔池及覆盖于其上的液态熔渣层，稳态阶段至少一个焊枪保持电弧工作状态，持续熔化焊丝并向熔池输送金属和热量，至少另一个焊枪向液态熔渣层提供电流通路，使液态熔渣层产生电阻热以辅助加热并稳定热输入。该装置可降低水介质扰动，提高水下焊接与增材成形的稳定性和一致性。
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Citation Information

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