Device and process for improving washing quality of cold-rolling strip steel surface
A cold-rolled strip and surface cleaning technology, applied in the electrolysis process, electrolysis components, etc., can solve the problems of waste of desalinated water and low cleaning quality of the strip surface, so as to prolong the discharge cycle, maintain the purity of water quality, and improve the cleaning quality Effect
Active Publication Date: 2012-07-11
WISDRI ENG & RES INC LTD
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[0003] In the course of practice, the defect of the above process steps is that the edges of the upper and lower surfaces of the strip after the electrolysis step and squeezed dry Residual lye, resulting in poor cleaning quality of the strip surface and waste of desalinated water
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[0014] Such as Figure 1-Figure 3 As shown, it is a device for improving the surface cleaning quality of cold-rolled strip steel in the present invention, including an alkali washing device 1, an alkali scrubbing device 2, an electrolysis device 3, a water scrubbing device 4, and a water rinsing device 5 along the running direction of the strip steel , Drying device 6, between the outlet of the squeeze roller 7 of the electrolysis device 3 and the inlet of the water scrubbing device 4, a purging device 8 is provided.
[0015] The purging device 8 comprises an upper purge beam 11 and a lower purge beam 12, a nozzle 13 for blowing out compressed air is provided between the upper purge beam 11 and the lower purge beam 12, and the nozzle 13 is also connected with a compressed air supervisor15.
[0016] The process for improving the surface cleaning quality of cold-rolled strip steel in the present invention comprises steps as follows: alkali washing, alkali scrubbing, electrolysi...
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The invention discloses a device for improving the washing quality of a cold-rolling strip steel surface. The device comprises an alkali flushing device, an alkali scrubbing device, an electrolysis device, a water scrubbing device, a water rinsing device and a drying device which are sequentially arranged along the operation direction of strip steel. The device is characterized in that a blowing device is arranged between an outlet of a drying roll of the electrolysis device and an inlet of the water scrubbing device. The process comprises the following steps of: alkali flushing, alkali scrubbing, electrolysis, blowing, water scrubbing, water rinsing and drying. According to the device and the process for improving the washing quality of the cold-rolling strip steel surface, the blowing device and step is added between the electrolysis step and the water scrubbing step; compressed air is blown to the electrolyzed cold-rolling strip steel surface by using a nozzle, therefore, the effect of the washing quality of the cold-rolling strip steel surface is further improved, the water purity of a water scrubbing circulating tank and a water rinsing circulating tank is retained for a longer period of time, the discharging cycle is prolonged, the consumption of desalted water is reduced and the effects of energy saving and emission reduction and environment protection are achieved.
Description
technical field [0001] The invention relates to the field of cold-rolled strip steel production. In the continuous degreasing and cleaning process of cold-rolled strip steel, the surface cleaning quality of cold-rolled strip steel is further improved, and the quality stability of coated (plated) processed products of cold-rolled strip steel is improved. Background technique [0002] In the cold-rolled strip coating process, including strip coating, strip galvanizing, color plate coating, silicon steel insulation coating and other coating (plating) layers, cold-rolling plants at home and abroad are processing cold-rolled strips The cleaning process section of the line adopts the following process steps: alkali washing, alkali scrubbing, electrolysis, water scrubbing, water rinsing, and drying, that is, to clean the grease, iron powder, dust and other impurities on the surface of the cold-rolled strip steel, and then After drying, various cold-rolled products (including variou...
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IPC IPC(8): C25F1/00C25F7/00C23G3/02
Inventor 刘首跃梁芳
Owner WISDRI ENG & RES INC LTD