Hard Chrome Plating Training Course

Table of Contents

Section 2 Quiz

1. What is the difference between decorative chrome and hard chrome (check all that apply)?

a. Decorative chrome is about one-half the thickness of hard chrome.
b. Only hard chrome is ground after plating.
c. Only hard chrome is deposited directly on steel.
d. Hard chrome baths do not contain chromic acid.

2. Which of the following are attributes of hard chrome (check all that apply)?

a. Wear resistance.
b. Harder than steel.
c. Conducts electricity better than copper.
d. Light weight.

3. Where would you expect to find hard chrome (check all that apply)?

a. Automobile bumpers.
b. Aircraft landing gear.
c. Hydraulic pistons.
d. Appliance trim.

4. Which of the following are related to the hardness measurements of metals (check all that apply)?

a. Vickers units.
b. Specific gravity.
c. Taber test.
d. Knoop units.

5. What are common methods for checking adhesion properties of hard chrome (check all that apply)?

a. Falex test.
b. Bend test.
c. Brinell test.
d. Magnification.

6. How can you increase the corrosion resistant of hard chrome (check all that apply)?

a. Remove impurities from the bath before plating.
b. Increase the macro crack pattern.
c. Preplate the part with nickel.
d. Polish the part before plating.

7. Which of the following are acceptable environments/conditions for hard chrome plated parts (check all that apply)?

a. Oily.
b. Acidic.
c. Rainy.
d. Dry.

8. What should you do if your hard chrome plated part has microcracks (check all that apply)?

a. Increase the thickness of the deposit.
b. Increase the hardness of the deposit.
c. Add more chromium to the bath.
d. Nothing.

9. What do the Taber and Falex tests have in common (check all that apply)?

a. Both tests are named after famous hard chrome platers from Cleveland, OH.
b. Both tests measure hardness.
c. Both tests measure abrasive resistance.
d. Nothing.

10. Why are hydraulic rods on front-end loaders hard chrome plated?

a. Abrasion and wear resistance.
b. Low efficient of friction.
c. Good oil retention.
d. Good thermal conductivity.

Continue to Section 3



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