Isostatic packaging method and device after forming magnetic material

Abstract

The invention relates to the technical field of magnetic material forming, in particular to an isostatic pressing packing method and device used after magnetic materials are formed. The method comprises a magnetic field pressing process and an isostatic pressing process. When the pressing process is finished, a lower die and a workpiece are taken out together, then a lower rubber die is placed on the lower die and turned over together with the lower die, after turning-over is carried out, the lower die is taken away, and finally, an upper rubber die covers the lower rubber die and is moved into the isostatic pressing device to carry out isostatic pressing. The lower rubber die covers the lower die and the workpiece after pressing is finished, then the lower rubber die, the lower die and the workpiece are turned over together, the workpiece in the lower die falls into the lower rubber die, workpieces do not need to be placed into the rubber die one by one manually, the working efficiency is improved, and the labor intensity is reduced. Meanwhile, generation of dust can also be effectively avoided, the working environment is improved, and harm to the human body is reduced.

Description

technical field [0001] The invention relates to the technical field of magnetic material molding, and more specifically, to an isostatic packaging method and device for magnetic materials after molding. Background technique [0002] At present, in the field of rare earth permanent magnet magnetic material powder molding, the production of cylindrical and block-shaped workpieces, such as the molded density cannot be reached, or the defective workpieces are directly molded, is usually the method of cold isostatic pressing after plastic film packaging, to improve density and uniformity. Due to operations such as plastic film packaging, cold isostatic pressing, removal of plastic seals, and loading of sintering boats, it is difficult to automate, resulting in a large number of operators, which puts pressure on cost and quality management. The applicant applied for an invention patent on June 21, 2016, the patent number is: 201610448905.4, and the patent name is a dry bag powder...

AI Technical Summary

Problems solved by technology

Due to operations such as plastic film packaging, cold isostatic pressing, removal of plastic seals, loading of sintering boats, etc., it is difficult to realize automation, resulting in a large number of operators at present, which puts pressure on cost and quality management

The applicant applied for an invention patent on June 21, 2016, the patent number is: 201610448905.4, and the patent name is a dry bag powder auxiliary molding method and device. The patent adopts the method of dry bag isostatic pressing. The blank is placed in a sealed cavity composed of a soft mold cover and a rubber pad. The upper part of the high-pressure chamber is pressurized by a supercharger, and the lower part is supported by a pressure-bearing slider. The blank is subjected to equal forces in all directions, thereby completing the pressing of the blank. , which improves the density and uniformity of the blank; since there is no need for plastic packaging, there is no operation such as degreasing, peeling plastic bags, etc. In addition, plastic bags stuck to oil are difficult to recycle and cause pollution; but using this patent to produce The products need to manually take out the workpieces and put them into the rubber mold one by one. While wasting time, the labor intensity of workers increases and the labor cost becomes higher.

[0003] Especially when producing small workpieces with multiple parts in one mold, multiple people are required to operate at the same time, and the efficiency is extremely low

There are many operating procedures, and the use of wet isostatic pressing is easy to cause defects such as oil ingress, edge knocking and corner drop

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