Aluminum-molybdenum-chromium intermediate alloy and method for producing the same

Abstract

The application provides an aluminum-molybdenum-chromium intermediate alloy and a preparation method thereof, and the preparation method comprises the following steps: (1) fluidizing roasting molybdenum disulfide and chromium sulfide, and obtaining molybdenum trioxide and chromium oxide after cooling; (2) mixing aluminum powder, potassium chlorate and the molybdenum trioxide and the chromium oxide obtained in the step (1), and then performing vacuum aluminothermic reduction smelting, cooling and refining to obtain the aluminum-molybdenum-chromium intermediate alloy. The preparation method provided by the application utilizes the heat released by the fluidizing roasting of the metal sulfide to dry the aluminum powder and the potassium chlorate, so that the drying process is shortened and the continuous production is facilitated; the vacuum aluminothermic method and the electron beam furnace refining method are adopted to improve the uniformity of the intermediate alloy, reduce the impurity content in the intermediate alloy and facilitate the control of the main component and the impurity content in the TC6, TC17 and TC18 and other grades of titanium alloy.

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