Arthur S. Kushner

Arthur S. Kushner Consultant

Cleaning Heat-Treated Parts Revisited

I answered a question on the above subject in my February 2003 column.

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Anodizing

Coloring of Titanium

Question: A customer has asked us about the feasibility of dying anodized titanium.

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Electroplating

Cleaning Heat-Treated Parts

Question: We receive parts that have been heat treated and quenched.

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Electroplating

Stressed Nickel Deposits

Question: What causes high stress levels in a nickel sulfamate bath?

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Electroplating

Yellow Lead Anodes

Question: Why do the lead anodes in our mixed catalyst chromium plating bath turn yellow?

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Electroplating

Butler Finish Nickel

Question: What is “butler finish nickel?” How does one apply this finish?

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Chromate Conversion Problems—One

Question: Our company does not do any plating, but we do buy zinc plated steel enclosures.

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Nickel Anodes Do Not Dissolve

Question: Our Watts nickel bath has been acting very strange of late.

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Tarnished Bright Nickel

Question: Can a bright nickel deposit become dull over time?

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Electropolishing Problem

Question: Our company electropolishes 316 SS, primarily tubing, using a 65% phosphoric, 30% sulfuric acid solution at 120F.

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Hard Nickel Plate

Question: We plate components with nickel using a nickel sulfamate bath.

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Added Information

I responded to a question regarding chromate conversion coatings in my November 2002 column.

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