FIELD: electricity.
SUBSTANCE: method for manufacture of bimetal central electrode for spark plug of combustion engine involves cold direct extrusion of bimetal cylindrical blank with transversal or longitudinal-transverse lamination through single-channel matrix of circular cross-section. At that flattened cone matrix is used. Cone-apex angle of the matrix can be equal to 80-120°. Diameter of the matrix cone can be equal to 0.7-0.9 of the container diameter. Lengthening coefficient is equal to 4-9.
EFFECT: manufacturing of bimetal central electrodes having even thickness of side sheath in transversal and longitudinal cross-section of electrode at its bigger length thus increasing stability of thermal performance of spark plug and providing sparking fail-safety.
4 cl, 6 dwg, 2 tbl
Title | Year | Author | Number |
---|---|---|---|
PROCESS OF MANUFACTURE OF BIMETAL CENTRAL ELECTRODE OF SPARKING PLUG OF INTERNAL COMBUSTION ENGINE | 1993 |
|
RU2091943C1 |
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SU1804027A1 |
METHOD FOR MAKING BUILTUP PRODUCTS WITH LENGTHWISE LAMINARITY | 1996 |
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SU659345A1 |
COMPOSITE BLANK FOR EXTRUDING BIMETALLIC RODS | 0 |
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SU1738410A1 |
Authors
Dates
2013-11-10—Published
2012-06-01—Filed