A kind of copper phosphorus solder and preparation method thereof

Abstract

The invention relates to a copper-phosphorus solder and a preparation method thereof. In order to solve the problems of high production cost, insufficient safety and easy pollution of the copper-phosphorus solder in the prior art, a technical solution is proposed: a copper-phosphorus solder The composition weight percent of the composition is: P content 6.6%-7.4%, Cu is the balance; the preparation method of copper-phosphorus solder includes: weighing raw materials; placing the electrolytic copper plate vertically on the bottom of the crucible; preparing premix; electrolytic copper rod Insert premix vertically; isolate premix and air; preheat, degas, dry; melt; slag; refine; cast. In the present invention, the copper-phosphorus solder has a reasonable proportion, low melting temperature, and high cost performance; the preparation process of the copper-phosphorus solder does not need to manufacture a high-phosphorus copper-phosphorus master alloy in advance, which simplifies the production steps, reduces the production cost, and reduces the loss of phosphorus elements. Low, safe and stable response, energy saving and environmental protection.

Description

technical field [0001] The invention relates to a solder and a preparation method thereof, in particular to a copper-phosphorus solder and a preparation method thereof. Background technique [0002] At present, in order to ensure the stability of the composition of smelting copper-phosphorus solder, phosphorus is added in the form of high-phosphorus copper-phosphorus master alloy. The specific steps are to melt the electrolytic copper first, and then add the high-phosphorus copper-phosphorus master alloy. Suitable post-casting. This production method needs to use electrolytic copper and yellow phosphorus to make high-phosphorus copper-phosphorus master alloy in advance, which not only increases the consumption of energy and materials, is time-consuming and labor-intensive, but also has high production costs, and the high-phosphorus copper-phosphorus master alloy reacts violently during the smelting process , will generate a large amount of phosphorus pentoxide smog, causing...

AI Technical Summary

Problems solved by technology

This production method needs to use electrolytic copper and yellow phosphorus to make high-phosphorus copper-phosphorus master alloy in advance, which not only increases the consumption of energy and materials, is time-consuming and labor-intensive, but also has high production costs, and the high-phosphorus copper-phosphorus master alloy reacts violently during the smelting process , will generate a large amount of phosphorus pentoxide smog, causing environmental pollution, which is neither safe nor environmentally friendly

[0003] For example, the publication date is 20190910, and the Chinese patent with the publication number CN110218894A discloses a method for one-time smelting and production of phosphorus copper solder. The invention uses laterite to cover red phosphorus and allows the red phosphorus to react with the copper tube inserted therein; Low, but firstly, red soil has poor air isolation ability, and the reaction will still generate phosphorus pentoxide, which will pollute the environment; secondly, red phosphorus directly reacts with copper, the reaction is more violent, and the safety is low