Thermoplastic precise forming nitrogen protection oxidation preventing system

Abstract

The invention belongs to the field of precision thermal processing of modern advanced manufacturing technology, and particularly relates to a nitrogen protection and oxidation prevention device facility for the production process of thermoplastic precision forming. The system is mainly composed of blank purification treatment, nitrogen dynamic sealing heating and cooling without oxidation device, medium temperature cooling and control system. The blank after sandblasting, blanking and dewatering enters the primary heating and protective nitrogen chamber. After the primary heating, the pre-formed workpiece enters the secondary heating and protective nitrogen chamber. The workpiece, after the fine forming process, enters the cooling channel to protect the nitrogen chamber, cools to the medium temperature and then enters the medium temperature cooling chamber, and finally the workpiece is output by the discharge car. It mainly solves the problem of not only reducing material waste caused by oxidation at high temperature, but also improving workpiece dimensional accuracy, surface quality and mold service life.

Description

Technical field: [0001] The utility model belongs to the precision thermal processing field of the modern advanced manufacturing technology, and in particular relates to a nitrogen protection anti-oxidation device facility for the production process of thermoplastic precision forming. technical background: [0002] Thermoplastic precision forming plays an important role in modern manufacturing technology. For ferrous metals at high temperature, the initial forging temperature is about 1200 ° C, and the final forging temperature is about 800 ° C. Oxidation produces a large amount of scale, which not only wastes raw materials and pollutes the environment , and seriously affect the dimensional accuracy, surface quality and service life of the mold. In order to prevent high-temperature oxidation, glass coatings are often used for protection at home and abroad. However, the glass coating may solidify and be pressed into the surface of the workpiece. The chemical reaction of the b...

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Problems solved by technology

[0002] Thermoplastic precision forming plays an important role in modern manufacturing technology. For ferrous metals at high temperature, the initial forging temperature is about 1200 ° C, and the final forging temperature is about 800 ° C. Oxidation produces a large amount of scale, which not only wastes raw materials and pollutes the environment , and seriously affect the dimensional accuracy, surface quality and service life of the mold. In order to prevent high-temperature oxidation, glass coatings are often used for protection at home and abroad. However, the glass coating may solidify and be pressed into the surface of the workpiece. The chemical reaction of the base metal will affect the surface quality of the workpiece, and the coating and removal of the coating are labor-intensive, so it is imperative to prevent or reduce the installation and facilities of high-temperature oxidation

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