Hard chrome plating additive VOP-Cr873
German Wien Chemical Co., Ltd. was founded in 1982 and has rich experience in the development
- Commodity name： Hard chrome plating additive VOP-Cr873
- Product description
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Wien Hard Chromium ExpertGerman Wien Chemical Co., Ltd. was founded in 1982 and has rich experience in the development, production and sales of chemical products. Especially in the field of chromium plating on metal surfaces, we provide the most advanced third-generation new high-efficiency hard chromium plating process product VOP-Cr873 series in the world. At the same time, VOP-Cr873 series special hard chromium plating process is provided for chromium plating of crystallizer copper tubes and copper plates. German Volkswagen designated raw material supplier。Mainly used for hard chrome plating of functional outer wallsSA is used when opening the cylinder, and SR is used for extra time when making upProcess characteristics：1. Current efficiency: up to 25% or more;2. Deposition speed: the fastest 1 micron/min (under the best operating conditions such as 55A/dm.+);3. Hardness of chrome plating layer: up to 1100HV;4. The chrome-plated layer is smooth, bright and finely crystallized. Good binding force;5. Micro-crack chromium layer, excellent plating ability;6. High corrosion resistance and good wear resistance;7. It does not contain fluoride and does not corrode the anode.
Process parameters:
standard range Chromic Anhydride
250g/L
220-280g/L
Acid ratio
100:1.1
100:1-1.2
Trivalent chromium
3g/L
2-5g/L
VOP-873SA
250ml/L
15-30ml/L(Open cylinder)
VOP-873SR
75ml/LkgCrO3
50-100ml/LkgCrO3
Current density 55A/d㎡
50-60A/d㎡
Temperature 58℃ 56-60℃ Scope of application
1.Printing plate making, printing and mechanical cylinders;
2.Shock absorbers, piston cylinders and various cast cylinder blocks;
3.Various copper and iron pipe outer wall electroplating;
4.Square and round billet crystallized copper tubes and copper plates;
5.MouldWait。
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