Lacquer-removing method for outlet head of electric appliance repairing coil

Abstract

The invention relates to a lacquer-removing method for an outlet head of an electric appliance repairing coil. A lacquer layer of a lacquer enameled wire is removed by using sulfuric acid. A chemical principle lies in that the outlet head of a motor coil is immersed in a ceramic sulfuric acid tank for only 25-35 seconds; the lacquer layer of the coil is cut a mouth by using a saw blade before immersion; the sulfuric acid permeates into a bare copper wire from the mouth of the lacquer layer. A reaction formula is Cu + 2H2SO4 -> CuSO4 + 2H2O + SO2. After the chemical reaction of the sulfuric acid and copper, the lacquer layer is not adhered to the surface of the copper wire; and the lacquer layer falls off completely only by wiping with wood abrasive paper after the surface of the copper wire is washed by using clear water.

Description

technical field [0001] The invention relates to a method for removing paint from wire outlets of coils for repairing electrical appliances, in particular to a method for removing paint from enameled wires for repairing motor coil outlets with many connectors. Background technique [0002] As we all know, when repairing electrical appliances, especially motor repairs, after the coil is embedded or wound, the paint layer must be removed from the coil outlet and soldered for connection. The current known method is to directly wipe off the paint layer with a scraper, file, emery cloth, etc. This method is very troublesome, especially when there are many thread ends in the coil, manual wiping is both laborious and time-consuming. There are also chemical paint removers, but they need to be prepared from six kinds of medicines. Among them, dichloromethane, formic acid, phenol, etc. are expensive, and it is inconvenient to buy them in remote mountainous areas, and they are volatile ...

AI Technical Summary

Problems solved by technology

The current known method is to directly wipe off the paint layer with a scraper, file, emery cloth, etc. This method is very cumbersome, especially when there are many wires from the coil, manual wiping is laborious and time-consuming

There are also chemical paint removers, but they need to be formulated with six kinds of medicines. Among them, dichloromethane, formic acid, phenol, etc. are expensive, and it is inconvenient to buy them in remote mountainous areas. Moreover, they are volatile during use and consume a large amount, which is not economical.

Both of the above traditional methods have the disadvantage of not being convenient and fast enough.

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