A method for degreasing and derusting steel structural parts
A technology for steel structure parts and rust is applied in the field of degreasing and rust removal of steel structure parts, which can solve the problems of a large amount of polluting waste water and high cost, and achieve the effect of reducing the polluting waste water and reducing the production cost.
Active Publication Date: 2021-07-20
CHANGSHU FENGFAN POWER EQUIP
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Problems solved by technology
When hot-dip galvanizing, it is generally necessary to degrease and derust the steel structure in advance. The current degreasing and derusting method is to use an alkaline solution to degrease, then use an acidic solution to derust and then galvanize, and use it after galvanizing. Acidic solution passivation, in this process will produce a large amount of polluting wastewater, the cost of subsequent treatment is very high
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[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0018] see figure 1 and figure 2 , the embodiment of the present invention includes:
[0019] A method for degreasing and derusting a steel structure. The method for degreasing and derusting a steel structure includes: a degreasing and derusting stage and an abrasive regeneration stage; the degreasing and derusting stage refers to putting the steel structure 9 into a degreasing pool In the process of degreasing and derusting in 1, the degreasing tank 1 is pre-placed with degreasing slurry, the degreasing slurry is composed of water and abrasives, and a turbulence device is set in the degreasing tank 1, and the turbulent device can drive the slu...
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The invention discloses a degreasing and rust-removing method for steel structural parts. The first step of the degreasing and rust-removing method for steel structural parts is the process of soaking the steel structural parts in a degreasing pool equipped with a turbulence device for degreasing and rust-removing process. The degreasing pool The slurry in the descaling pool is composed of water and abrasives. The second step is to introduce the degreasing slurry that has expired into the derusting pool, add acidic solution into the pool, keep the PH value in the derusting pool between 1 and 3, stir and soak for 10~ After 30 minutes, the rust contained in the slurry was dissolved, and finally the slurry with dissolved rust was separated from solid and liquid by centrifugal separation equipment, and the separated solid abrasive was put back into the degreasing pool for further use. Through the above method, the present invention can use physical action to remove most of the grease and rust on the steel structure, reduce the amount of acid and alkali in the pretreatment procedure of the hot-dip galvanizing process, reduce the pollution of water resources, and reduce the cost of subsequent wastewater treatment. pressure.
Description
technical field [0001] The invention relates to the field of steel structural parts processing, in particular to a degreasing and derusting method for steel structural parts. Background technique [0002] The steel structure of the power tower is generally treated by hot-dip galvanizing process before leaving the factory to ensure the weather resistance of the surface of the steel structure and prevent the tower from being quickly corroded by rain and snow. When hot-dip galvanizing, it is generally necessary to degrease and derust the steel structure in advance. The current degreasing and derusting method is to use an alkaline solution to degrease, then use an acidic solution to derust and then galvanize, and use it after galvanizing. Acidic solution passivation, in this process will produce a large amount of polluting wastewater, the cost of subsequent treatment is very high. Contents of the invention [0003] The technical problem mainly solved by the invention is to pr...
Claims
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Login to View More IPC IPC(8): B24B31/00B24B31/10B24B31/12B24B31/16C23G3/00
CPCC23G3/00
Inventor 赵金元杨俊赵月华
Owner CHANGSHU FENGFAN POWER EQUIP