Brass CNC machining: How to Prevent Oxidation and Discoloration of Brass CNC Machining Parts?

In industrial processing, the surface of brass CNC machining parts is prone to oxidation and corrosion, which seriously affects the quality, appearance and price of brass CNC machining parts. The brass rust prevention process is an essential process in the brass surface treatment process. So, how to deal with brass CNC machining parts to prevent rust?

At present, in the brass surface treatment process, the anti-rust processes include passivation, chemical plating, electroplating, sealing, painting, etc. Due to the mature, simple and easy-to-use brass passivation process, it has been widely used in the protection of brass CNC machining parts.

In general, the brass passivation treatment process includes degreasing cleaning, rust cleaning, bright cleaning, passivation treatment and other processes.

Brass CNC machining parts degreasing cleaning:

Immerse the brass CNC machined parts to be washed in the tank solution of the prepared brass degreasing cleaning agent to achieve the purpose of degreasing and decontamination on the brass surface. The degreasing time needs to be adjusted according to the serious oil contamination on the surface. 

At present, the brass degreasing and cleaning process generally uses an environmentally friendly copper degreasing agent for cleaning operations. The environmentally friendly brass degreaser has no corrosion inhibitor component, which greatly reduces the probability of corrosion of brass CNC machined parts during the cleaning process.

Rust removal of brass CNC machining parts:

Immerse the cleaned brass CNC machining parts in the bath solution of the prepared brass rust remover to achieve the purpose of removing rust and oxide scale on the brass surface.

At present, in the rust removal process of brass, environmentally friendly copper rust remover is generally used for rust removal and cleaning. The environmentally friendly brass rust remover has the advantages of strong rust removal ability, fast rust removal speed, good environmental protection performance and wide application range.

Chemical Polishing of Brass CNC Machined Parts:

Immerse the cleaned brass CNC machining parts in the bath of the prepared brass polishing agent to achieve the purpose of bright brass surface.

At present, in the brass polishing process, the environmentally friendly brass rust remover used does not contain strong oxidizing acids such as sulfuric acid, nitric acid, chromic acid, and hydrochloric acid, and does not contain heavy metal ions. It is simple and practical, and its polishing effect is better than that of traditional pickling. During the polishing process, no irritating gas or yellow smoke will be produced.

Brass CNC machining parts passivation protection:

The washed brass CNC machining parts are immersed in the bath of the prepared brass passivation agent to achieve the purpose of long-term rust and oxidation prevention of brass CNC machining parts.

The brass passivation agent used in the passivation protection of brass CNC machining parts has the advantages of stable physical and chemical properties, non-toxic, odorless, non-volatile, non-deliquescent, non-decomposing, non-sublimating, non-absorbing dust and harmful gases such as H2S and SO2.

The brass CNC machined parts after passivation treatment can effectively resist the erosion of hot and humid salt spray, germs, etc., and the passivation film has good wettability and high corrosion resistance.

Brass passivation agent has triple functions of dehydration, discoloration and rust prevention.

If you encounter other surface treatment problems, you can contact us at any time, VMT13 years focus on high-demand, high-quality, high-quality surface treatment, precision CNC machining parts service manufacturer.