Environment-friendly powder metallurgy process with wet separation technology

Abstract

The invention discloses an environment-friendly powder metallurgy process with a wet separation technology, and belongs to the field of powder metallurgy technology. According to the environment-friendly powder metallurgy process with the wet separation technology, when metal waste is compressed and cut, the bonding strength between the metal waste and a coating or paint on the surface of the metal waste is reduced; through an ultrasonic cleaning technology, impurities which cannot be directly cleared away in the metal waste are taken out, the coating and paint on the surface of the metal waste are stripped by utilizing a cavitation effect formed by ultrasonic waves in an ultrasonic cleaning solution, and a metal material is not prone to be secondarily polluted, so that the metal waste with high purity is obtained, and then granulation and powder forming processes are performed; and the recycled metal waste can be separated through a wet method, and the coating, paint and various oxides on the surface of the metal waste are removed, so that the purity of the metal material is increased, and the situation that the performance of the recycled metal material prepared through powder metallurgy does not reach the standard is avoided.

Description

technical field [0001] The invention relates to the field of powder metallurgy technology, more specifically, relates to an environment-friendly powder metallurgy technology with wet separation technology. Background technique [0002] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. The powder metallurgy method has similarities with the production of ceramics, and both belong to the powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used for the preparation of ceramic materials. The powder metallurgy technology has significant energy saving, material saving, excellent performance, and high product precision. A series of advantages such as good stability are very suitable for mass production. In addition, some mate...

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Problems solved by technology

[0003] With the development of material science, more and more metal materials are applied to social production and life, which greatly facilitates people's daily production and life. However, the products made of the above materials have a certain service life. During the service life, metal tools will form metal waste. On the one hand, it will pollute the environment. On the other hand, in order to meet their own needs for metal tools, people have to mine a large amount of metal resources from nature, which will cause serious damage to the environment. damage, so the recycling of metal waste has become an important technology in the field of environmental protection

[0004] The chemical properties of most metal materials are relatively active, and they are easy to oxidize and fail in nature. Therefore, surface treatments such as coating and painting are usually carried out on the surface of metal materials to isolate the contact between the metal material and the air, so as to protect the metal material and prolong the use of the metal material. In the process of powder metallurgy, if the recovered metal materials cannot be fully cleaned, the above-mentioned coating materials and spray paint will be easily integrated into the metal material, changing the composition of the metal material, resulting in the performance of the recycled metal material prepared by powder metallurgy. not to standard

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