inferior brass blackening pretreatment agent, inferior brass blackinng pretreatment additon agent , inferior brass preoxidizing agent ,treatment liquid before inferior brass blackening,catalytic agent before blackening

Inferior brass blackening pretreatment agent, Inferior brass blackinng pretreatment additon agent , Inferior brass preoxidizing agent ,Treatment liquid before inferior brass blackening,Catalytic agent before blackening

First, the product code: Q / YS.1224 (Yi Shun brand)

Second, the product advantages and uses:

This product is suitable for more than H50 non-standard lead-tin low-density non-standard brass before blackening treatment, after the treatment of inferior non-standard brass, blackening in the next step in the process, You can get a uniform and dark film, while the agent can also greatly improve the binding of the black film. If you do not deal with this product, poor quality non-standard brass can not get dark and uniform oxide film. This product is environmentally friendly odorless, suitable for lead brass, tin brass and other non-standard inferior brass. Widely used in optical instruments parts, accessories.

Third, product index:

1,This product has two components: pre-treatment agent and additives composed of two parts. In addition have film removal agent.

2,Specific gravity> 1.0 PH value <7.0

3,Odorless and colorless.

Fourth, the use of methods: 

black brass in poor quality pre-treatment agent by adding 3-4% of additives. After heating to 35-45 ℃, the degreasing brass pieces immersed in the pretreatment liquid, about 1-2 minutes, then remove the membrane, washed with water. Finally enter Q / YS.122 Brass special black agent, soak 3-5 minutes, you can get a uniform and dark oxide film.

Other processing：Chemical Plating Liquid Train、Chemical nickel plating liquid、Metal polishing Agent、Copper surface treatment agent series、Metal cleaning agent、Electroless plating of real gold on copper surface、Brass dedicated blackening Agent