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Welding method of cast beryllium-aluminum alloy

A technology of beryllium aluminum alloy and welding method, which is applied in welding equipment, manufacturing tools, arc welding equipment, etc., to achieve the effect of no macro cracks, solving welding quality problems, and good bonding

Active Publication Date: 2019-04-05
西北稀有金属材料研究院宁夏有限公司
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a casting beryllium aluminum alloy welding method for the problems existing in the welding of cast beryllium aluminum alloy

Method used

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Embodiment Construction

[0012] The specific embodiment of the present invention is as follows.

[0013] A casting beryllium aluminum alloy welding method. The invention discloses a material welding method of cast beryllium aluminum alloy (two forming methods of powder metallurgy and precision casting). The method mainly consists of the following steps: 1) Machining the surface of the cast beryllium aluminum alloy material Treatment, improve the surface finish, soak in absolute ethanol for 5-10 minutes and clean the oil and dust attached to the surface to ensure the cleanliness of the groove, and rinse it with deionized water repeatedly; (2) Preparation before welding, preparation for wire cutting Φ4×100 beryllium-aluminum welding wire, ready for welding sample piece, size 120×20×3, processed into 30° cone angle; prepared for welding sample rod, size Φ10×50, after opening with wire cutting in the middle, processed into 30° Cone angle; (3) Argon arc welding, for cast beryllium aluminum alloy materials...

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Abstract

The invention provides a welding method of cast beryllium-aluminum alloy. The welding method of the cast beryllium-aluminum alloy comprises the following steps that (1) the surface of a cast beryllium-aluminum alloy material is dipped in absolute ethyl alcohol, oil dirt attached to the surface of the cast beryllium-aluminum alloy material is cleaned, and the cast beryllium-aluminum alloy materialis cleaned up with deionized water; (2) preparation is conducted before welding, wherein beryllium-aluminum welding wires are prepared by means of wire cutting, and welding of sample sheets and welding of sample rods are conducted; (3) the welding initial current is 5-10 A, the arc extinguishing current is 10-20A, the welding current is 100-150A, the welding speed is 0.5-2 cm / s, and the argon flowof a spray nozzle is 5-20 L / min; (4), heat treatment is conducted on welding samples, and the temperature is 550-600 DEG C and kept for 4-6 h; (5) the sample rod completing heat treatment is machinedto be a mechanical sample. By the adoption of the welding method of the cast beryllium-aluminum alloy, the combination degree between a weld joint and the matrix is good, macroscopic cracks are avoided, and the mechanical performance index of the welded material is 0.9-1 time that of the welded matrix material.

Description

technical field [0001] The invention belongs to the field of metal material welding methods, and in particular relates to a casting beryllium aluminum alloy welding method. Background technique [0002] Beryllium aluminum alloy (containing 60-70% beryllium) has the advantages of rigidity of beryllium and toughness of aluminum. It has light weight, high specific strength, high specific stiffness, good thermal stability, high toughness, high modulus, corrosion resistance, etc. It is an important new structural material. Beryllium aluminum alloy also has excellent thermal and optical properties, and has been widely used in aerospace electronic equipment and high-mode frequency equipment. At the same time, beryllium aluminum alloy has very strong competitiveness in civilian fields such as computer manufacturing, automobile industry and high-precision, high-speed electric welding machine manufacturing. [0003] Investment casting technology is the main preparation method of ber...

Claims

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Application Information

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IPC IPC(8): B23K9/00B23K9/16B23K9/235B23K9/23
CPCB23K9/0026B23K9/16B23K9/232B23K9/235
Inventor 谢垚李军义王东新刘兆刚李峰王战宏高林钟景明
Owner 西北稀有金属材料研究院宁夏有限公司
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