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The methods of deburring, cleaning, polishing, and other treatments for silver contact assemblies generally include the following two situations:

Contacts: pure silver, silver cadmium, silver cadmium oxide, silver nickel magnesium alloy contacts;

Contact bridge: Copper and copper alloy contact bridge.

1) Deburring and cleaning:

1. Using trichloroethylene to degrease parts in a steam degreaser;

2. To remove burrs in a vibration polishing machine, the following proportions should be added: parts, S-type ALMCO super shiny abrasive (black plastic block), 1 ounce Oakite (# FM184)/gallon aqueous solution;

3. Add 2 ounces of Oakite (# 30)/gallon aqueous solution to the vibration polishing machine for neutralization;

4. Continuously rinse with water flow in a vibration polishing machine;

5. Remove and dry.

2) Bright treatment:

1. Place only the parts in the vibration polishing machine and continuously rinse with 1 ounce Oakite (# FM184)/gallon water solution;

2. Add 2 ounces of Oakite (# 30)/gallon aqueous solution to the vibration polishing machine for neutralization;

3. Continuously rinse with water flow in a vibration polishing machine;

4. Remove and dry.

3) Polishing:

1. Polishing in a drum polishing machine: Add sufficient water to immerse all parts, and add 8 ounces of electrolytic polishing compound (# XS) for each polishing;

2. Rinse with water in a drum polishing machine;

3. Remove and dry;

4. Pack and store in suitable plastic bags& Nbsp;

4) Cleaning:

1. The contact must not be contaminated or dull visually;

2. When tested according to the material laboratory test method No.30-7a, there should be no large SiO2 particles (with a diameter exceeding 1.3mm) on the contacts that can cause SiF4 bubbles

3. When tested according to the material laboratory testing method No.30-7a, the organic pollutants per square centimeter shall not exceed 50 micrograms.