Electroplating is a method of depositing a thin layer of other metals or alloys on the surface of metal parts by electrolysis. Electroplating helps prevent metal corrosion, repair worn parts, and can increase the durability, reflectivity and brazing properties of metal materials.

The purpose of pretreatment of metal electroplating is to remove unfavorable electroplating substances (mainly oil stains and rust) attached to the surface of metal materials during manufacturing, processing, transportation and storage, so that the metal surface is activated and suitable for electroplating.

Analysis shows that the electroplating effect is not good, and 65% to 80% is caused by improper pre-plating treatment. Metal materials are often shaped before electroplating. Stretch. Rolling, cutting and other processing treatments require various oils in these processing processes. During the heat treatment process, the metal will also be contaminated by residues such as scale, quenching oil, and flare liquid. In order to ensure the quality of electroplating, remove these Dirt is very necessary.

In order to form a dense plating layer on the metal surface, the metal surface must be cleaned. Cleaning generally consists of the following parts:

1. Preliminary cleaning. The purpose is to remove a large amount of oil stains on the metal surface, and then clean it with solvent immersion, steam degreasing and other methods.

2. Intermediate cleaning, the purpose is to remove the dirt remaining in the preliminary cleaning. Generally, first use abrasive methods, including immersion degreasing and spray cleaning.