Method for manufacturing molybdenum plate blank through sintering

The invention discloses a method for manufacturing a molybdenum plate blank through sintering. The method includes the steps that firstly, raw materials are weighed, and the weighed raw materials are evenly mixed, and mixed molybdenum powder is obtained; secondly, the mixed molybdenum powder is pressed into a plate blank in a cold isostatic pressing manner; and thirdly, under the hydrogen atmosphere, the plate blank is heated and sintered, and the molybdenum plate blank is obtained after being naturally cooled. Heating and sintering include the specific steps that firstly, the plate blank is firstly heated to 900 DEG C and sintered for 1 hour to 2 hours at the temperature of 900 DEG C, then the plate blank is heated to 1,500 DEG C and sintered for 2 hours to 4 hours at the temperature of 1,500 DEG C, and then the plate blank is heated to 750 DEG C to 1,780 DEG C and sintered for 6 hours to 10 hours at the temperature of 750 DEG C to 1,780 DEG C. According to the method, molybdenum powder used in the method is common brands of molybdenum powder in the market, cost is controllable, and purchase is easy; the apparent density of the mixed molybdenum powder is increased, fluidity is improved, a rubber sleeve is filled with the molybdenum powder more easily in the powder filling process, and the plate profile of the pressed blank is improved; and the maximum sintering temperature is lowered, and the loss of equipment and the like and energy consumption are reduced.