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铝合金为什么不能焊接

更新时间: 2020-08-20 00:00:00     

铝合金不能焊接,由其特性所致。铝是熔点很低的金属,其特点是受热极易氧化,而氧化后生成的氧化铝或三氧化二铝却为极耐高温的物质,炼钢炉的内衬耐火砖就是用氧化后的铝做的,而铝合金外层有耐高刃的氧化铝覆盖,金属铝的焊接面就不可能形成溶合层,则不能焊接。

关键词: 铝合金 为什么 焊接

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