【Minimize humidity】
・Store in a well-ventilated area
・Do not seal in plastic bags or similar containers (condensation may form)
・Use desiccants or rust-preventive paper
・Even on production lines that are not in use, move the products periodically to change the parts in contact with them and the areas facing downward

【Cleaning Tips】
・Do not let dirt accumulate. Dust tends to trap moisture
・Use clean water for cleaning
・Remove any moisture left on the product after cleaning
moisture can cause not only corrosion but also stains and discoloration
・Be careful when wiping with a dry cloth, as it can leave streaks
・If organic solvents are used during cleaning, ensure they are completely removed
They may transform into substances that corrode metal


【If Corrosion Occurs】
Early re-plating is recommended.
Chrome plating itself is highly corrosion-resistant.
If rust appears, it is usually a sign that the base material is corroding.
If corrosion progresses, repair costs will increase.


【Corrosion-Resistant Treatment】
1. Ultra-High-Hardness Chrome Plating “CHROAMOR”
Chroamor does not have cracks and can be hardened to HV1800 through heat treatment at temperatures ranging from 200°C to 600°C.
https://www.otec-kk.co.jp/english/surface/03.html

2. Double Layer Chrome Plating
Cracks are interrupted at the interface between layers.
Prevents penetration to the base material.

3.High Corrosion-Resistant Chrome Plating “CHROSTON"
Chroston has a special crystal structure that does not cause cracks or pinholes.

4. "Hybrid Chrome Plating – Superior Corrosion Resistance Beyond Ni-Cr Plating
Glass-based inorganic material is impregnated into the cracks of the chrome plating.
This compensates for the weak points of hard chrome plating.
https://www.otec-kk.co.jp/hard-chrome-plating/hybrid/

5.Fine Microcrack Plating “Chro-Fine”
Since the cracks are finer than in standard chrome plating, corrosion is dispersed and does not concentrate in a single point
https://www.otec-kk.co.jp/hard-chrome-plating/chrofine/

6. Dry Buffing Treatment
Cracks are flattened and sealed. Wet buffing is effective, but dry buffing is superior.

7.Increased Plating Thickness
This buys time before corrosion reaches the base metal.

8.Dual-layer plating with nickel / Ni-Cr plating
This prevents cracks from reaching the base metal.




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Otec Co., Ltd. is a specialist in hard chrome plating, with over 60 years of history.
We provide fully integrated production — from roll manufacturing, plating, to finishing.

Otec Co., Ltd.
3-1-40 Imafukuhigashi, Joto-ku, Osaka City, Osaka Prefecture
536-0002 Japan
Tel ：81-6-6939-4591　・　Fax ：81-6-6939-1503

Website: https://www.otec-kk.co.jp/english/
Technical site: https://otec-kk.info/
Blog: https://blog.otec-kk.co.jp/