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二、熔炼技术合金的熔炼是加工生产的第一道工序。该工序的目的和要求是: (1)完成设计的合金化任务。变形铝合金都是用混熔法进行合金化的,其化学成分对铸造工艺的稳定性、铸锭的加工工艺、产品的组织和性能起决定性作用。因此,必须准确控制成分,并保证成分的均一。 (2)熔体的含气含渣最少。熔体的含气含渣量直接影响铸锭的含气含渣量。铸锭的气体和非金属夹杂缺陷,破坏金属连续性,它对产品的加工工艺塑性、表面质量和
Second, the smelting technology Alloy smelting is the first production process. The purpose and requirements of the process are: (1) to complete the design of alloying tasks. Alloying aluminum alloy is alloying process, the chemical composition of the casting process stability, ingot processing technology, product organization and performance play a decisive role. Therefore, the ingredients must be accurately controlled and the ingredients must be uniform. (2) The least gas-containing slag in the melt. The amount of gas-containing slag in the melt directly affects the amount of gas-containing slag in the ingot. Ingots of gas and non-metallic inclusions, destruction of metal continuity, its plastic processing of the product, the surface quality and