FIELD: powder metallurgy, namely manufacture cermet silver containing electric contact parts designed for operation in electromagnetic starters and other low-voltage apparatuses.
SUBSTANCE: method comprises steps of preparing charge by chemical co-deposition of finely dispersed mixture of silver and cadmium oxide out of solution of silver and cadmium nitrates; annealing in air; pelletizing; coating pellets with pure silver; pressing; sintering; sizing; annealing. Pellets are coated with silver due to adding to charge finely dispersed silver with fraction size 1 - 2 micrometers.
EFFECT: enhanced ductility, commutation wear resistance of contact parts.
2 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MAKING CONTACT PARTS OF SILVER- CADMIUM OXIDE COMPOSITIONS | 2002 |
|
RU2236717C2 |
| METHOD OF MANUFACTURING SILVER-CADMIUM OXIDE ELECTRIC CONTACTS | 1994 |
|
RU2082800C1 |
| METHOD OF MANUFACTURE OF ELECTRICAL CONTACTS BASED ON SILVER WITH CADMIUM OXIDE | 1989 |
|
SU1695693A1 |
| METHOD OF PREPARATION OF CHARGE FOR LAMELLAR ELECTRIC CONTACT | 2002 |
|
RU2223843C1 |
| MIXTURE FOR PROCESS PRECOAT OF CERMET ELECTRIC CONTACTS | 1985 |
|
SU1355024A1 |
| METHOD FOR MAKING CHARGE OF CONTACTS OF ARGENTUM-GRAPHITE COMPOSITIONS | 2002 |
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| METHOD OF MAKING COLLECTOR PLATES | 2019 |
|
RU2710758C1 |
| COPPER-BASE SINTERED ELECTROCONTACT MATERIAL | 2000 |
|
RU2208654C2 |
| MIXTURE FOR PRECOAT OF POWDER SILVER-CONTAINING BIMETALLIC ELECTRIC CONTACTS | 1987 |
|
SU1471888A1 |
| PROCESS OF MANUFACTURE OF SINTERED ELECTRIC CONTACT FROM COMPOSITION OF SILVER CADMIUM OXIDE | 1987 |
|
SU1419388A1 |
