Metal cleaner

Abstract

The invention discloses a metal cleaner. The metal cleaner comprises the following raw materials including, by weight, 10-20 parts of sodium benzoate, 4-8 parts of triethanolamine, 3-5 parts of sodiumcarbonate, 1-3 parts of sodium metasilicate pentahydrate, 0.5-0.8 part of an antifoaming agent, 0.2-0.4 part of sodium alcohol ether sulphate, 40-50 parts of ethyl alcohol and 30-60 parts of deionized water. The metal cleaner is suitable for metal surface sold residues generated after high-temperature welding, no corrosion is generated to the metal surface, water solubility is high, and no residue is left on the surface after cleaning; and meanwhile, a certain lubricating function can be achieved on the metal surface, and it is guaranteed that the ion content reaches the standard after a welding part is cleaned.

Description

technical field [0001] The invention relates to the technical field of metal material cleaning, in particular to a metal cleaning agent. Background technique [0002] In the electronic assembly industry, the components used, especially the electromagnetic components, must meet the halogen-free standard stipulated in IEC61249-2-21 after welding, that is, the bromine and chlorine content are required to be less than 900ppm respectively, and the total content of bromine and chlorine is less than 1500ppm. However, the existing cleaning agents cannot effectively clean the solid residue after welding at high temperature (>500°C), and the inspection standard cannot be reached after repeated cleaning, and some cleaning agents use a large amount of organic solvents, which not only cannot reach the surface Ion pollution and product halogen-free standard requirements, but also cause greater harm to the environment. [0003] The cleaning agent provided by the invention can solve the...

AI Technical Summary

Problems solved by technology

However, the existing cleaning agents cannot effectively clean the solid residue after welding at high temperature (>500°C), and the inspection standard cannot be reached after repeated cleaning, and some cleaning agents use a large amount of organic solvents, which not only cannot reach the surface Ion pollution and product halogen-free standard requirements, but also cause greater harm to the environment