Smelting method for phosphorus-copper solder

Abstract

The present invention relates to the production of soldering material. The smelting of phosphorus-copper solder includes two steps. In the fist step, after red phosphorus and certain amount of plant ash are set in crucible, molten electrolytic copper is poured into the crucible for reaction fully white stirring. In the second step, the phosphorus-copper alloy obtained in the first step in heated and smelted in a smelting furnace for the second time before being cast and machined into final product. The smelting method has simplified production process, low power consumption, lower loss of phosphorus and less environmental pollution.

Description

technical field [0001] The invention belongs to a method for manufacturing welding materials, and relates to a method for smelting phosphorus copper solder. Background technique [0002] At present, in the production of phosphor copper solder, in order to ensure the final product with stable quality, the method of twice melting the intermediate alloy is generally adopted. For example, in order to obtain phosphorus copper solder with a phosphorus weight ratio of 6%, it is necessary to smelt to obtain an intermediate alloy of about 14%, and then carry out secondary smelting. In this method, when the intermediate alloy is smelted, due to the high phosphorus content, the phosphorus is in a saturated state in the alloy, resulting in a large amount of phosphorus becoming P in the reaction. 2 o 5 The volatilization of gas not only pollutes the environment, but also causes a large loss of phosphorus raw materials. In addition, although the secondary smelting ensures the uniform c...

AI Technical Summary

Problems solved by technology

In this method, when the intermediate alloy is smelted, due to the high phosphorus content, the phosphorus is in a saturated state in the alloy, resulting in a large amount of phosphorus becoming P in the reaction. 2 o 5 Gas volatilization not only pollutes the environment, but also causes a large loss of phosphorus raw materials

In addition, although the secondary smelting ensures the uniform composition and stable quality of the final product, it also greatly increases the energy consumption and the cost of the product