METHOD OF PRODUCING CHROMIUM-MOLYBDENUM-TUNGSTEN ALLOY IN PROCESS COMBUSTION MODE Russian patent published in 2024 - IPC B22F3/23 C22C27/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to production of chromium-molybdenum-tungsten alloy in process combustion mode. It can be used in melting of heat-resistant nickel alloys and special steels used in creation of power plants of gas-turbine type and nuclear type plants. Reaction mixture containing, wt.%: 28.8–33.7 of chromium oxide, up to 43.6 of tungsten oxide, up to 44.1 of molybdenum oxide, 22.6–26.6 of aluminum metal and 0.14–1.27 of calcium difluoride, are placed in a refractory mold. Mold is installed on the centrifuge rotor and synthesis is carried out in combustion mode at centrifugal acceleration in the range of overload values of 45–60 g to obtain a synthesis product in the form of an ingot consisting of two layers. Lower layer is a target alloy of chromium-molybdenum-tungsten, and the upper layer is cast oxide material based on Al₂O₃. Subsequently, the target alloy is separated from the oxide material.

EFFECT: high output of the end product, homogeneous chemical and structural composition, reduced content of impurities.

2 cl, 3 dwg, 2 tbl