T/NXCL 021-2023 Argon Arc Welding Specification for Beryllium-Aluminum Alloy

Scope

Main technical content: Beryllium-aluminum alloys have good stiffness, density, and thermal properties, and are mainly used in military fields such as aviation and aerospace. Precision casting of beryllium-aluminum alloys may suffer from defects such as shrinkage, hot cracks, slag holes, gas holes, insufficient pouring, and dimensional deviations. Welding is one of the most direct and effective methods to repair these defects. For beryllium-aluminum alloy welding products, only 20% of the raw materials are used for processing products, which also reduces many subsequent processing steps. Through technological breakthroughs in China, the technical difficulties of beryllium-aluminum alloy welding and the repair of casting product defects have been overcome, and the mechanical properties of the products have gradually reached the level of the original parts. It can effectively control defects such as underwelding, cracks, welding penetration, and gaps. Secondly, for many beryllium-aluminum products with complex shapes and high performance requirements, simple casting can no longer meet the performance needs. Welding and assembly of high-performance beryllium-aluminum components can obtain near-net-shape products with high practical value. This standard fills the gap in the field of beryllium metal inspection at home and abroad, and provides strong support for the research, development, application, and production of beryllium-aluminum alloy materials.

Development Information

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