Automatic consumption reduction treatment equipment for cryogenic machining of metal materials

Abstract

The invention discloses automatic consumption reduction treatment equipment for cryogenic machining of metal materials. The automatic consumption reduction treatment equipment comprises a cooling boxand a liquid nitrogen mechanism arranged on the left side of the cooling box, and the right side of the cooling box is provided with an inlet and outlet mechanism, a closing mechanism, a switching mechanism and a power mechanism. According to the automatic consumption reduction treatment equipment, a reaction area is completely isolated from the outside, liquid nitrogen dissipation and waste are greatly reduced, meanwhile, strict ventilation environment requirements are not needed any more during cryogenic machining, an operator does not need to stretch into the liquid nitrogen to take out a metal part under an automatic inlet and outlet device, and traditional safety risks are reduced; and meanwhile, a mechanism for carrying the metal part to repeatedly operate in a barrel through atomization spraying is used so that the metal part can be uniformly cooled, unqualified parts are reduced, meanwhile, automation of the treatment process is achieved, the treatment efficiency is greatly improved, the labor force is saved, and the cryogenic machining cost is reduced.

Description

technical field [0001] The invention relates to an automatic consumption reduction processing equipment for cryogenic processing of metal materials, and mainly relates to the technical field of cryogenic metal processing. Background technique [0002] Cryogenic technology is a new process technology that has emerged in recent years to improve the performance of metal workpieces. It is the most effective and economical technical means. In the process of cryogenic processing, a large amount of residual austenite in the metal is transformed into martensite, especially the supersaturated metastable martensite will reduce the supersaturation in the process from minus 196 degrees Celsius to room temperature, and the precipitation is dispersed. Ultrafine carbides can reduce martensitic lattice distortion and reduce microscopic stress, while fine and dispersed carbides can hinder dislocation movement during plastic deformation of the material, thereby strengthening the matrix struct...

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Problems solved by technology

[0005] At this stage, the cryogenic processing of small workpieces usually uses liquid nitrogen for rapid cooling. The main method of use is to put the metal parts in a barrel with liquid nitrogen for cooling, but there are several problems in this method, the most critical of which is It is necessary to frequently open and close the lid to place and take out metal parts. This method causes a large amount of liquid nitrogen to dissipate quickly when it contacts the air, and the cost of using liquid nitrogen increases sharply. Clamping is inconvenient and easy to scratch, and it needs to be taken out manually with protective gear, which is likely to cause safety accidents such as frostbite. Secondly, this mode has high requirements on the environment. It is easy to cause suffocation in a sealed environment and needs to be kept ventilated at all times. It is easy to sink into the liquid nitrogen, and the bottom surface of the metal part is not in complete contact, which may affect the subsequent processing performance of the metal part; the above-mentioned operation efficiency is low, and it is difficult to realize automation. In view of the above shortcomings, the present invention improves

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