The preparation process of molybdenum rod usually includes the following steps:
Raw material preparation: First, molybdenum trioxide (MoO3) with high purity is obtained through processes such as ore extraction and ore smelting. Molybdenum trioxide is then reduced to metallic molybdenum powder, usually using hydrogen as the reducing agent.
Powder processing: The molybdenum powder obtained is sieved and finely processed to obtain the desired particle size and purity. These steps help to eliminate impurities and improve the quality of molybdenum rods.
Pressed into billets: Molybdenum powders are pre-pressed and pressed to form molybdenum billets. Cold isostatic pressing or hot isostatic pressing is usually used to ensure high density and consistent structure of molybdenum billets.
Sintering: The molybdenum billet is sintered at high temperature, usually under the protection of vacuum or hydrogen. During the sintering process, the molybdenum powder particles are combined to form dense molybdenum rods. Sintering temperature and time are controlled according to product requirements and molybdenum rod size.
Processing and trimming: Fine processing and trimming of molybdenum rods after sintering. This includes cutting, turning, grinding and other processes of molybdenum rods to obtain the required size and surface quality.
Inspection and quality control: Strict inspection and quality control are carried out on molybdenum rods during the preparation process. This includes testing the size, density, purity and mechanical properties of molybdenum rods to ensure that the products meet the specified standards and requirements.
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