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Environment-friendly high-grade anti-corrosion metal surface treatment
Stainless steel substitution

 

This technology are completely chrom- free which process of treatment without chrome passivation, also can be used for replacing the stainless steel,it is an epoch-making technology of surface treatment,which can greatly improve the anti-corrosion performance of zinc-nickel alloy.it consists of three layers,1st layer,high anti-corrosion zinc-nickel alloy layer,2nd layer, good adhesion primer layer,3rd top layer,strong coating firm prevents intrusion of corrosive factors
from outside which costitute composite coating treatment.

 

Film structure and the corrosion prevention mechanism

 

Film structure

 

Features

Environment-friendly

The treatment is completely environmental friendly without trivalent chromium and chromium VI.

Superior corrosion resistance

Because of the strong coating, the products can reach superior anti-corrosion function.
With thin double layers coating, it has stable shielding effect and superior anticorrosion function.

Appearance

Stainless steel appearance can be achieved without affecting the appearance of zi-ni alloy.

Easy to insert

Because of the baking coating formed on the zi-ni alloy is superior thin, the bolts and nuts can be connected perfectly, there is no need to increase tapping.

The performance of lubricating

Because of the top coating has good lubricating property, it will well improve the operation function of drilling and fastening.

 

 

Standard treatment process (Dip-spin method)


Standard treatment process (Dip-spin method)

 

 

 

 

試験

Function of corrosion resistance

・Basic performance:Salt spray test(JIS 2371)→2000 Hours
 Combined cycle corrosion test(JASO M609-91)→200 Cycles
・Test object:M5×35 drilling screw
・Test method:Drilling the screw into the 2.3mm steel plate with power screwdriver、evaluat the
 performance of promoting test after drawing them out

 

Salt spray test(According to JIS 2371)

Electrogalvanizing
+
trivalent chromium
Zinc-nickel plating
+
trivalent chromium
RUSPERT
Zero stain
腐食試験 腐食試験 腐食試験
After 200 hours After 500 hours After 1000 hours


Combined cycle corrosion test(According to JASO M609-91)

Electrogalvanizing
+
trivalent chromium
Zinc-nickel plating
+
trivalent chromium
RUSPERT
Zero stain
腐食試験 腐食試験 腐食試験
After 20 cycles After 50 cycles After 100 cycles