Molten metal reduction release agent

Abstract

A molten metal reduction release agent belongs to a chemical release agent, especially a reduction release agent for manufacturing the molten metal in the electronic products. The molten metal reduction release agent comprises 55-65 portions of phosphate polyoxyethylene nonyphenol by weight, 30-40 portions of amammonium dihydrogen phosphate by weight and 2-8 portions of ammonium citrate tribasic by weight. The invention has the advantages of high reduction efficiency, innocuity, no cancerogenic substance, little smoke and neutral pH value noncorrosive to the machines. The molten metal reduction release agent can clean the excessive release metal and oxidation impurities on the tin surface in the tin furnace for purification, reacts with the carbonization welding flux in a high temperature furnace, enhances the reduction and releases out the metal elements. The residues are water-soluble and capable of degrading without pollution. Thereby, the invention can improve the electronic product quality, saves energy and decreases consumption.

Description

【Technical field】 [0001] The invention relates to a reducing and isolating agent for molten metal, which belongs to a chemical isolating agent, in particular to a reducing and isolating agent for producing molten metal in electronic products. 【Background technique】 [0002] Molten metals are often used in the manufacture of electronic products. Molten metals (or alloys) will be oxidized when they encounter air, melted and oxidized in a high-temperature furnace, and continue to circulate in the furnace, the oxidation speed will be accelerated, and the amount of oxidized metal will increase. It will increase, and the oxide will contain carbonized flux that contains a lot of tin, and it will accumulate and float on the tin surface to affect the flow of tin and the quality of tin on the surface, so it can only be salvaged. After the tin slag is salvaged, the height of the tin surface will be reduced, so tin strips should be added frequently. In order to make tin less prone to o...

AI Technical Summary

Problems solved by technology

In order to solve the above problems, reducing powder is often used in the prior art. Due to the raw material composition of molten metal reducing powder, this type of reducing powder has the following defects: poisonous, low reduction rate; because there is strong acid in the ingredients, most of them are strong acids Strong alkali is corrosive to the machine, and the smoke is large

In addition, there is also a type of molten metal reducing agent. This type of reducing agent is also toxic. It contains carcinogens and is irritating to the human body. The smoke has a strong smell and is corrosive to the machine. The residue is gelatinous and difficult to clean. Defects that do not meet environmental protection standards and are very expensive

In the prior art, there is also the use of a molten metal reduction machine. This solution has the following problems for visitors to this molten metal reduction machine: the quality of the molten metal itself after reduction is poor, and it consumes electricity, manpower management and space placement.