HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 22082

Nickel/chromium plating method

+++

Dear sir:

What is difference between hard chromium plating and nickel/chromium plating ? Why some of companies use in hydraulic industry for protection of piston rods the nickel layer under chrome layer because of corrosion and wear but other use only chrome layer?

Thank you & I appreciate you to answer soon.

Ali Moradian
a heavy equipment company - Tehran, Iran

+++

Mr Ali

The Nickel Layer under Chrome for Hydraulic rods is to prevent corrosion in exposed conditions. The Ni is Sulfur Free Semi Bright and is plated to thicknesses up to 25 microns and followed by Hard Chrome to specified thicknesses .

Asif Nurie
Atlanta Global

New Delhi, India

+++

dear sir

both of the processes have main goal ie hard and corrosion resistant coating .today by using especial microcracked hard chromium u do not need nickel underlying on steel substrate .hardness of 1000 hv and 100 salt spray is achieved

by proprietary chemical via 25 microns.

in former process nickel layer with stressed deposits plus conventional chromium leads microcracked chromium at top layer.

hadi khosravi
- tehran iran

ANSWER or FOLLOW UP POST an unrelated QUESTION HOT Topics

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information
presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The
internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: