Thin-layer slag protecting medicinal powder for welding high strength steel

A technology of high-strength steel and powder, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problem of affecting the welding production process and weld seam quality, the wire feeding is not as smooth as solid welding wire, and the production cost of flux-cored welding wire Advanced problems, to achieve the effect of easy promotion, improved welding production efficiency and low cost
CN102581520AInactive Publication Date: 2012-07-18SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a thin-layer slag protecting medicinal powder for welding high strength steel. The medicinal powder is prepared by uniformly mixing an alloy and a slag forming and arc stabilizing agent. The content of the alloy accounts is 88-92wt% (weight percent), and the content of the slag forming and arc stabilizing agent accounts is 12-8wt%. The alloy comprises the following elements by weight percent: 0.06-0.10% of C, 1.0-5.0% of Si, 1.2-3.4% of Mn, 0.72-1.4% of Mo, 0.5-1.4% of Cr, 1.4-5.2%Ni, 0.30-0.70% of Ti and the balance of Fe; the slag forming and arc stabilizing agent is prepared by mixing the following materials in parts by weight: 15-30 parts of rutile, 8-25 parts of potash potassium feldspar, 1-5 parts of magnesia, 2-10 parts potassium titanate, 2-8 parts of sodium fluoride, 0-8 parts of sodium fluosilicate, 5-12 parts of barium fluoride and 0-4 parts of cerium oxide rare earth. The medicinal powder can be used together with a welding torch with the powder and gas supplying double function, thereby overcoming the defects that the high-strength steel welding wire is hard to obtain from a wire rod, the welding wire is produced by multiple thermal treatment, and the cost is high.
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Description

technical field

[0001] The invention relates to a medicinal powder for welding, in particular to a high-strength steel welding medicinal powder with a thin layer of slag protection specially used for a welding torch with a powder feeding and gas feeding function; it belongs to the field of welding materials. Background technique

[0002] With the development of welded structures in the direction of large-scale, high-pressure, high-temperature and other high-parameterization, the application range of high-strength steel is expanding, and the amount is gradually increasing. It has been widely used in construction machinery, bridges, pressure vessels, mining machinery, In industries such as construction, the corresponding demand for high-strength steel welding materials has also increased significantly. High-strength steel welding materials include welding rods, solid welding wires, and flux-cored welding wires. Because solid welding wires and flux-cored welding wires are suita...

Claims

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