Quick coating removing method of coating thermal forming steel
A technology for thermoforming steel and coating, which is applied in the directions of cleaning methods, cleaning methods and utensils using liquids, chemical instruments and methods, etc., which can solve the problems of insufficient processing stability, high laser cost, low production efficiency, etc. The effect of low input cost, low process cost and high work efficiency
Inactive Publication Date: 2019-01-11
SHANGHAI LINGYUN IND TECH CO LTD
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Problems solved by technology
Traditional methods for removing coatings on hot-formed steel include chemical reagents and mechanical scraping. The problems with traditional methods are low production efficiency and insufficient processing stability, which are not suitable for large-scale production.
Chinese patent CN 1014
Method used
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Example Embodiment
[0031] Example 1: Removal of the alloy layer of the plating layer of the 22MnB5 plating hot-formed steel, with a removal depth of 28 μm. The water flow pressure is 380Mpa, the traveling speed is 8m / min, the gun head is 5mm away from the workpiece, and the gun head is tilted 15°. See you on the removed metallographic photos Figure 5 , The removal effect is good.
Example Embodiment
[0032] Example 2: Removal of the alloy layer and transition layer of the 22MnB5 coating hot-formed steel, with a removal depth of 42 μm. The water flow pressure is 420Mpa, the traveling speed is 6m / min, the gun head is 4mm away from the workpiece, and the gun head is inclined 15°. See you on the removed metallographic photos Image 6 , The removal effect is good.
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Abstract
The invention discloses a quick coating removing method of coating thermal forming steel. The quick coating removing method comprises the steps that to-be-processed coating thermal forming steel is fixed; a spraying gun connected with a high-pressure water pipe is aligned to a part, on which a coating is to be removed, of the coating thermal forming steel; high-pressure water flow is introduced into the spraying gun, and mobile spraying is carried out on the surface coating of coating thermal forming steel; and the surface of the coating thermal forming steel is removed by 25-55 micrometersinthe thickness direction, and coating metals are removed. The quick coating removing method has the beneficial effects that 1, through technological optimization, the coating of the coating thermal forming steel can be quickly removed, and the bottleneck problem that welding technology efficiency of the thermal forming steel is restrained is solved; 2, the removing speed can reach 4 m/min to 10 m/min while removing precision is guaranteed, and compared with the prior art, the quick coating removing method is high in working efficiency and is suitable for large-scale production manufacturing enterprises; and 3, one-time investment cost is low, and technological process cost is lower than that of other coating removing manners.
Description
technical field [0001] The invention relates to a method for removing a coating on a metal surface, in particular to a method for quickly removing a coating on hot-formed steel with coating. Background technique [0002] Thermoformed steel, represented by 22MnB5, is the main material for thermoforming process of auto parts. Hot-formed steel has good formability at high temperatures; at the same time, it can form a high-strength martensitic structure after high-temperature quenching. Under the requirements of lightweight and high reliability of automobiles, the market application prospect is very broad. The surface of the early thermoforming steel has no coating, and the surface of the steel is easy to be oxidized at high temperature during the thermoforming process. It is necessary to add argon protection in the mold cavity and shot peening after thermoforming. Argon protection and shot peening add complexity and cost to the thermoforming process. European patent EP0971044...
Claims
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Patent Timeline
Login to view more IPC IPC(8): B08B3/02
CPCB08B3/02
Inventor 王小杰冯浩宇韩振宇郝大帅
Owner SHANGHAI LINGYUN IND TECH CO LTD
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