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PostTime: 2023-8-7 14:42:26    Views: 4627

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.