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本文对锡青铜的分类保管和重熔方法作了比较详细的介绍,可以作为各厂回用废金属工作中的参考。这里必须说明,用这种方法重熔的再生铜锭,用来铸造铸件是可以的。但如用来制造摩擦件(如轴套)的话,由于重复熔化时的氧化作用,还必须注意清除氧化锡。研究证明,氧化锡的熔点高达2000℃以上,不溶介于锡青铜中而成单个的固体夹杂,硬度很高,甚至此淬火的铜的硬度还高,如果铸造轴套时不把它除去的话,运转时就会把轴拉毛,使轴颈受到严重的磨损。除去氧化锡的方法,一般是在熔炼时加入熔剂,使氧化锡化合成为低熔点的化合物进入熔渣而除去。关于熔剂的成分,可参阅本刊1953年第11期30及33页和[再生有色金属手册]86~87页
In this paper, the classification of tin bronze custody and remelting methods made a more detailed introduction, can be used as a reference for the work of recycling scrap metal plant. Here it must be stated that a regenerated copper ingot remelted in this way is acceptable for casting castings. However, if used to make friction parts (such as bushings), due to the repeated melting of the oxidation, we must also pay attention to remove tin oxide. Studies have shown that the melting point of tin oxide as high as above 2000 ℃, insoluble in tin bronze into a single solid inclusions, high hardness, even the hardness of the quenched copper is also high, if the cast sleeve is not removed when it, Shaft hair will be running, so that the journal suffered serious wear and tear. The method of removing tin oxide is generally adding a flux during melting to remove the compound which is synthesized by the tin oxide into a low melting point and enters the slag. For the composition of flux, please refer to the publication of 1953, No. 11, 30 and 33 pages and [Recycled Nonferrous Metals Brochures] 86 to 87