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US4200458A Method for the alloying of a metal melt 失效
金属熔体合金化的方法

Method for the alloying of a metal melt
摘要:
A method for the alloying of a metal melt with an alloying material by pneumatic injection of such element through a lance which is submerged in the melt. The alloying material may be lead or metals and compounds having physical properties similar to lead.
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