METHOD OF PRODUCTION OF BILLETS AT ROLLING MILLS Russian patent published in 2014 - IPC B21B1/02 

FIELD: process engineering.

SUBSTANCE: proposed method aims at increasing wear resistance of rolls and process efficiency and decreasing wastes at rolling. It comprises making an intermediate blank and its rolling at rolling plant at feed of its front end to rolling unit at initial moment of rolling. Note here that before said feed, this intermediate blank is formed by squeezing its front end at four-hammer press forge to produce conical part with taper angle not larger than friction angle at sections of contact of intermediate blank front end with rolling mill rolls. Note also that reduction of hammers is performed with formation of concave surfaces at front end angles with the help of four hammers appropriately shaped.

EFFECT: perfected rolling process.

4 cl, 8 dwg