METHOD OF PROFILES PRESSING Russian patent published in 2008 - IPC B21C23/08 

FIELD: technological processes.

SUBSTANCE: method of profiles pressing may be used in production in profiles, mostly bars, by method of hot pressing from hard-to-deform materials, in particular, from titanium alloys, during pressing of profiles front technological washer is placed between glass washer and billet. Technological washer is made of material, the yield point of which at preset temperature amounts to 0.8÷1.5 of yield point of billet material at pressing temperature. End of technological washer that faces matrix has conical-cylindrical surface. Angle of washer end taper α_t is less than angle of matrix taper α_m, which is measured between axis of matrix and generatrix of working surface, by 5÷25°, diameter of cylindrical part corresponds to diameter of matrix calibrating part, and washer end that faces billet has spherical convex surface with radius that is equal to 0.7÷3.0 of press containers' diameters.

EFFECT: reduction of pressed profile front end cutoff pieces and obtainment of regulated structure along the whole length of bar.

2 cl, 3 dwg, 1 ex