Material and method for butt welding of aluminum-steel composite plates

By developing special aluminum-steel composite plate butt welding materials and using layer-by-layer element transition technology, we have solved the problems of high thermal stress and brittle phase generation during welding of aluminum-steel composite plates, achieving high strength, toughness and good welding properties. quality.

CN119328357AActive Publication Date: 2025-01-21XIAN UNIV OF TECH
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Patent Information

Application Number
CN202411736283.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-01-21
Estimated Expiration
2044-11-29

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Abstract

The invention discloses a material for butt welding of aluminum-steel composite plates. The material comprises a welding material for a near-aluminum layer and a near-steel layer. The welding material for the near-aluminum layer is a near-aluminum layer welding wire and comprises a flux core and a welding skin, and the flux core is composed of, by mass, 40-50% of Zn powder, 20-25% of Sn powder, 5-10% of Ti powder, 5-10% of Mg powder, 1-3% of Re powder and the balance Al powder; the welding material for the near steel layer is a near steel layer welding wire and comprises a flux core and a welding skin, and the flux core is composed of, by mass, 40%-50% of Zn powder, 30%-35% of Ag powder, 5%-10% of Si powder and the balance Fe powder. The material is specially used for solving the problems that in the butt welding process of the aluminum-steel composite plate, thermal physical properties are not matched, so that stress is large, and cracking is caused by brittle phase generation. The invention further discloses an aluminum-steel composite plate butt welding method.
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Citation Information

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