METHOD AND DEVICE FOR MAKING ELONGATED ARTICLES FROM POWDER MATERIALS Russian patent published in 1994 - IPC

FIELD: powder metallurgy. SUBSTANCE: method involves preparation of exothermic mixture of powders of at least one metal and one metal from the group C, B, Si, initiating combustion reaction, and subsequent extrusion of the products of combustion. Before extrusion the products are compressed at a pressure of 0.01-0.5 MPa, whereas extrusion proceeds at a pressure of 20-100 MPa. The device for carrying out the method includes mold with container, initiation system, punch, heat-insulated gage, and press with a slide. Punch has hole to receive gage, initiation system is built into fixed cover plate of the container and operatively connected to the press slide, whereas the container has outer annular stop for adjusting its mass. EFFECT: enhanced efficiency of the method and device. 2 cl, 1 dwg, 1 tbl