Production technique of large common-substance molybdenum plate

Abstract

The invention relates to a production process of a large single heavy molybdenum plate in the rare metal press manufacturing field. The process of mixing-pressing-sintering-heating-hot rolling-variable speed shot blasting is adopted; the needed alloy ingredient powder material is loaded into a large mixing machine for mixing, the mixed powder material is loaded into a garment bag with a support frame and the mouth of the garment bag is sealed; the garment bag and the support frame are pressed into plate blank in a large isostatic pressing machine; hot rolling blank is sintered in a large sintering furnace, presintering is firstly carried out in the furnace, and then high-temperature sintering is carried out; heating is carried out by selecting three heating furnaces of different types, namely, an induction heating furnace, a radiation heating furnace and a roller-hearth type heating furnace sequentially; and a reversible hot rolling mill is automatically controlled for hot rolling by adopting four-roll and two-roll and four-roll type special hydraulic thickness, and the molybdenum plate after the hot rolling is treated with variable speed shot blasting. The method not only can effectively solve the problem of difficult production of the large big single heavy molybdenum plate, but also has low cost, small energy consumption, and is environment-friendly. The method is mainly used for plate rolling equipment.

Description

technical field [0001] The invention relates to the field of rare metal pressure processing and manufacturing, and mainly refers to a production process of a large single-weight molybdenum plate. Background technique [0002] Molybdenum is a refractory metal with high melting point, high deformation temperature, fast temperature drop, large deformation resistance and sharp increase with temperature drop, plastic-brittle transition temperature decreases with the increase of deformation degree, and easy to absorb gas at high temperature, Easy to oxidize and so on. [0003] Molybdenum strips and their deep-processed products are widely used in aerospace, chemical, metallurgical and other industrial sectors. Its deep-processing products include: electronic sputtering targets, molybdenum wafers for thyristors and other electronic products. Molybdenum and molybdenum alloy metals are rare and refractory metals, and the temperature requirements for thermal processing are very high...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the large single-weight molybdenum plate is difficult to process in the prior art, the present invention provides a hot rolling heating process, which can not only solve the above-mentioned problems to produce the required molybdenum plate, but also has low cost and environmental protection

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