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Sulfuric acid dechrome additive VOP-TREAT357
退铬添加剂VOP357
退铬添加剂VOP357-1
退铬添加剂VOP357
退铬添加剂VOP357-1

Sulfuric acid dechrome additive VOP-TREAT357

Num
VOP-TREAT357
Model:
Specification:
Description

Sulfuric acid chromium removal additive

VOP-TREAT357 is fast and gentleDechrome process,It is especially suitable for deplating the chromium layer of printing intaglio.

Advantage of:

  • It is a sulfuric acid type catalyst and does not contain chloride
  • Little damage to the substrate
  • The deplating catalyst can produce passivation on the surface of the copper layer, therefore, it is necessary to protect the surface of the copper layer during the deplating process.This kind of protection makes it easy to obtain a good electroplating effect during the second chrome plating of the plate roller.
  • Compared with the hydrochloric acid type deplating process, the toxic gas is significantly reduced

Process parameters:

Temperature 20℃, 25℃ is recommended
Sulfuric acid content 350-400g/L
Density (at 20℃) 25°Be
Container (deplating tank) PVC or PP
Current density The maximum 50A/d㎡ is related to the anode surface
Voltage About 8 volts
Activation time About 10-30 seconds (anode activation)
Anode material lead
Stripping speed 6-9 minutes about dechrome layer 10μm
Rotating Speed of Plate Roll 25-75 meters (m)/minute 50 (m)/minute recommended
Intrusion area of plate roller 30-50%

 

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