Patent ID: 6953078

Claim:
A method for forming a consumable electrode from metal chip scraps, the steps comprising: crushing said metal chip scraps into particles; cleaning said particles; vacuum-thermal degassing said particles at a temperature in the range of 550 to 650 deg C. and vacuum pressure of about 5×10 −3 mm of mercury for a time in the range of 1 to 2 hours, and maintaining said vacuum pressure while said particles cool to about 200 deg C., and then cooling said particles to about ambient temperature; cold pressing said particles into briquettes; placing said briquettes into a mould, said mould having sufficient remaining space to receive the addition of molten metal alloy; pre-heating said mould with briquettes therein, prior to addition of molten metal alloy, to a temperature sufficient to assure adhesion of said briquettes to said molten metal alloy; filling said remaining space with said molten metal alloy; cooling said mould and consumable electrode formed therein to ambient temperature.