Patent ID: 7037466
Filing Date: 2006-05-02
Classification: B22F,B30B,C22B,Y02P,Y02W

Abstract:
1. A method of manufacturing strained billets from metal chips, comprising the steps of: crushing said chips into particles; cleaning said particles; cold molding said particles into cylindrical briquettes; placing said briquettes into a capsule; sealing said capsule with upper and lower butt-end covers; heating said capsule to a temperature in the range of 900–1080 deg C. and maintaining this temperature for a time sufficient for temperature equalization throughout the capsule volume; loading said capsule into the mould section of a pressing rig, said pressing rig having an upper plunger with a principal press-washer and a lower plunger with an autonomous press washer each plunger extending into said mould section on opposite ends of said capsule; hot deforming said capsule in the axial direction, wherein said hot deforming is carried out by application of dynamic impingement force by said press washers uniformly applied over the surfaces of said capsule butt-end covers, with sufficient repetitions and magnitude of force to result in a billet having the desired relative density; and then cooling said formed billet.