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Method for removing sprayed plastic layer on surface of magnesium alloy

A technology of surface spraying and magnesium alloy, which is applied in metal processing equipment, abrasive jet machine tools, abrasive feeding devices, etc., can solve the problems of difficult process control, high waste liquid and gas discharge, and high cost, and achieve energy saving and emission reduction Excellent effect, simple treatment process, and low production cost

Active Publication Date: 2021-02-26
NO 59 RES INST OF CHINA ORDNANCE IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its main component, dichloromethane (comprising 55-70%), is a volatile and toxic substance. During the long-term and large-volume magnesium alloy spray paint removal treatment, it is difficult to harmlessly treat the working environment. The cost is high, and the method does not introduce the reaction product after the paint stripping treatment. For the stripping of magnesium alloy products with active chemical properties, the stability of the technical route is not high, and the treatment plan for the stripping waste is not considered.
[0005] In summary, it is difficult to remove the paint film of the magnesium alloy plastic spraying layer by traditional mechanical cleaning methods, and the paint remover with strong acid, strong alkali, and halogenated hydrocarbon as the main components is difficult to control the process of large-scale paint removal operations, and the waste liquid Excessive exhaust emissions and unfriendly working environment make it difficult to meet the industrial production needs of continuous recycling and reuse of large quantities of magnesium alloy plastic sprayed parts

Method used

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  • Method for removing sprayed plastic layer on surface of magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment focuses on the description of the equipment used to realize the removal method—a magnesium alloy recovery and treatment system.

[0037] A kind of magnesium alloy recovery processing system, such as figure 1 As shown, it includes sand blasting equipment and a circulation system for driving magnesium alloy castings to be transported in sequence;

[0038] The sandblasting equipment includes: sandblasting room 1, which is provided with a rotating platform 3 for driving the rotation of magnesium alloy castings. On the side of the rotating platform 3, there are a plurality of spray guns 2 evenly distributed along the casting height direction. Each spray gun The nozzles of 2 are aimed at the magnesium alloy casting; two sets of sandblasting equipment are arranged in total, and the two sets of sandblasting equipment are respectively close to the loading station and unloading station 32 of the circulation system, figure 1 The sandblasting equipment on the left ...

Embodiment 2

[0054] A method for removing plastic-sprayed layer on the surface of magnesium alloy, adopting the equipment in embodiment 1 to remove the plastic-sprayed layer of AM60 acrylic resin, concrete steps are as follows:

[0055] Place the magnesium alloy casting with plastic-sprayed layer on the internal rotating platform 3 of the sandblasting room 1, and use three spray guns 2 evenly distributed along the height direction of the casting to carry out the degreasing and impurity sandblasting treatment on the casting for 3 minutes. The sandblasting material is Alumina particles, the particle size is 80 mesh, and the sandblasting air pressure is 0.1MPa. During the sandblasting process, the internal rotating platform 3 rotates at a speed of 6° / s. After the sandblasting is completed, open the airtight door of the sandblasting room 1. remove the casting;

[0056] Put the magnesium alloy casting after the first sandblasting treatment into the combined container 25 of the charging station,...

Embodiment 3

[0062] A method for removing the plastic-sprayed layer on the surface of a magnesium alloy, using the equipment in Example 1 to remove the plastic-sprayed layer of AZ31B magnesium alloy polyester, the specific steps are as follows:

[0063] Place the magnesium alloy casting with plastic-sprayed layer on the internal rotating platform 3 of the sandblasting room 1, and use three spray guns 2 evenly distributed along the height direction of the casting to carry out degreasing and impurity sandblasting treatment on the casting for 4 minutes. The sandblasting material is Alumina particles, the particle size is 70 mesh, and the sandblasting air pressure is 0.3MPa. During the sandblasting process, the internal rotating platform 3 rotates at a speed of 5° / s. After the sandblasting is completed, open the airtight door of the sandblasting room 1. remove the casting;

[0064]Put the magnesium alloy casting after the first sandblasting treatment into the combination container 25 of the ch...

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Abstract

The invention provides a method for removing a sprayed plastic layer on the surface of a magnesium alloy. The method comprises the steps that primary sand blasting treatment is conducted on a magnesium alloy casting with the sprayed plastic layer; heat preservation treatment and cooling treatment are sequentially conducted on the magnesium alloy casting; dual sand blasting treatment is conducted on the magnesium alloy casting; and the device adopted for achieving the removing method is a magnesium alloy recycling and processing system and comprises a sand blasting device and a circulating system used for driving the magnesium alloy casting to be conveyed in sequence. Due to the adoption of the scheme, the sprayed plastic layer of the magnesium alloy casting can be broken and removed on thepremise that a base body of the magnesium alloy casting is not damaged, sprayed plastic layers on the surfaces of most magnesium alloy castings can be effectively removed, all working procedures areclosely connected, the production cost is low, and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of recovery and reuse of magnesium alloys with plastic-sprayed layers, and in particular relates to a method for removing the plastic-sprayed layers on the surface of magnesium alloys. Background technique [0002] Compared with commonly used structural materials in industry, magnesium alloy has the advantages of light weight, high specific strength, good shock absorption, good casting and good machining performance, which makes magnesium alloy become the fastest growing industrial product application in recent years. One of the metal materials. With the widespread application of magnesium alloy castings in automobiles, motorcycles, 3C and other industries, the amount of waste products of magnesium alloy products continues to increase. The technical requirements for recycling and reuse are high, making the efficient recycling and reuse of magnesium alloy waste products a major problem for assembly companies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/08B24C11/00B24C7/00B24C3/12B24C3/08F25D31/00
CPCB24C1/08B24C11/00B24C7/0061B24C3/12B24C3/083F25D31/00
Inventor 万元元陈强赵丽旸李占邢志辉高诗情李明黎明吴帅李辉唐艳项运良
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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