Method of producing solder spheres
AssigneeWestern Electric Company, Inc.
InventorRichard A. Wydro, Sr.
Life of this patent
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Abstract
A method of making solder spheres having non-oxidized surfaces by introducing solder into a flux composition comprising an activator and an antioxidant. Molten solder (12) is extruded into a flux composition (24) maintained at ambient temperature or solder powder (40) is sifted into hot flux (46) and then cooled.
Claims14
A method of making metal spheres having non-oxidized surfaces, comprising:
- introducing a metal having a low melting temperature into a liquid flux comprising an activator and antioxidant, the flux being maintained at a temperature so as to cause metal spheres to form, the state of the metal and the respective temperature of the metal and flux being such that spheres of the metal are formed when the metal is introduced into the flux.
A method of making solder spheres comprising the steps of:
- (a) heating the solder until it is molten,
- (b) introducing the molten solder into a liquid flux comprising an activator and an antioxidant, said liquid flux being at a temperature so as to cause the metal to solidify into spheres.
A method of making solder spheres comprising the steps of sifting powdered solder into a liquid flux composition comprising an activator and an antioxidant, said liquid flux composition being maintained at a temperature greater than the melting temperature of the solder.
Dependencies are inferred from the claim text.