STAMP FOR EQUAL CHANNEL ANGULAR PRESSING (OPTIONS) Russian patent published in 2017 - IPC B21C25/02 B21J13/02 B82B3/00 

FIELD: metallurgy.

SUBSTANCE: stamp for equal-channel angular pressing comprises a bandage and an insert consisting of several parts arranged in it, the lower support, which by the first part of the flat surface is closed with the end of the bases of all insert details, forming the input and the output channels, the press-stamp is additionally equipped with at least one pair of wedges. Plane wedges forming the bevels, are conjugate with each other, and their opposing planes are parallel. The insert consists of two parts. The first part, two parts are mutually perpendicular planes forming a V-groove shape, and in the second part, four parts are mutually perpendicular planes forming a projection and a W-shaped groove. Parts of the two planes of the first part groove and two projection of the second part plane are closed together. The inlet duct walls are formed by other parts of the two planes of the first part groove and the two planes of the second part groove. In this case, parallel planes of both wedges are closed, in the first, with the plane of one of the insert parts, in the second, with a part of the inner belt surface directly or via a support segment configured in the form of a bounded plane and part of its cylindrical surface cut-off by it. The plane is parallel with respect to the symmetry axis of its cylindrical surface. The second part of the lower support surface is closed with the end of the first wedge base, and the second wedge end is closed with a portion of the flat surface of the shroud opening in the shoulder.

EFFECT: simplified design and improved performance.

8 cl, 13 dwg