公开(公告)号：EP3395464A1

公开(公告)日：2018-10-31

申请号：EP15911458.6

申请日：2015-12-22

申请人： Stock Company "Chepetsky Mechanical Plant"(SC CMP)

发明人： VOLOSHIN, Andrej Vladimirovich ,  MOSKALEV, Aleksandr Yevgenyevich ,  NEGODIN, Dmitrij Alekseevich ,  NIKULIN, Dmitrij Valerievich ,  SAMOILOV, Iurij Panteleevich

IPC分类号： B21C37/04 ,  C22F1/18 ,  B21J5/00 ,  B21B3/00

CPC分类号： B21B3/00 ,  B21C37/04 ,  B21J5/00 ,  C22F1/18

摘要： The invention relates to the pressure processing of metals, and specifically to methods for preparing rods and workpieces from titanium alloys, with applications as a structural material in nuclear reactor cores, in the chemical and petrochemical industries, and in medicine. The invention solves the problem of producing rods from high-quality titanium alloys while simultaneously ensuring the high efficiency of the process. In order to achieve same, a method for preparing rods or workpieces from titanium alloys includes the hot forging of an initial workpiece and subsequent hot deformation, the hot forging of an ingot is carried out following heating to a temperature within the range (Temperature of polymorphic transformation (Tpt)+20)°C to (Tpt+150)°C with shear deformations primarily in the longitudinal direction and a reduction ratio of k = (1.2-2.5), and then performing hot rolling forging, without cooling, within a temperature range of (Tpt+20)°C to (Tpt+150)°C, changing the direction of shear deformations to being primarily transverse and with a reduction ratio of up to 7.0, and conducting subsequent hot deformation by heating deformed workpieces to within a temperature range of (Tpt-70) to (Tpt-20)°C.