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Steel strip descaling method

A technology for steel strip and scale skin, which is applied in the field of removing oxide scale or scale on the surface of steel strip, can solve the problems of different steel products, incomplete descaling, large equipment loss, etc., and achieves small loss of steel strip and good washing and descaling effect. , the effect of small equipment loss

Inactive Publication Date: 2012-07-25
HUZHOU JINYE ELECTRONICS MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The descaling in the shot blasting process is not complete, the quality of the steel after pickling is different, and the problems caused by pickling, such as large loss of steel and equipment, and environmental pollution cannot be avoided

Method used

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  • Steel strip descaling method
  • Steel strip descaling method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] As shown in accompanying drawing, a kind of strip descaling method, it comprises the following steps:

[0041] A, the steel strip 1 is sent into the scale breaking device 2 through the pulling roller, and the scales on the surface of the steel strip 1 are broken;

[0042] B, sending the steel strip 1 processed through step A into the sandblasting device 3, spraying steel grit, high-pressure water and high-pressure air to the steel strip 1 surface, further crushing and scouring the scales on the steel strip 1 surface;

[0043] C, the steel strip 1 processed through step B is sent to the brush roller device 4, and the surface of the steel strip 1 is brushed, further removing residual scales and making the surface of the steel strip smooth;

[0044] D, the steel strip 1 processed through step C is sent into the band brushing device 5, and the powder crumbs and the remaining scales left after the brushing on the steel strip 1 upper surface are removed by brushing;

[0045]...

Embodiment 2

[0049] As shown in the drawings, the difference from the first embodiment is that the axial direction of the water outlet nozzle forms an included angle of 45 degrees with the steel strip surface. The water supply pressure of high pressure water is 9Mpa. The axial direction of the nozzle forms an included angle of 45 degrees with the surface of the steel strip 1 .

Embodiment 3

[0051]As shown in the drawings, the difference from the above-mentioned embodiments is that the axial direction of the water outlet nozzle and the steel strip surface form an included angle of 40 degrees. The water supply pressure of high pressure water is 10Mpa. The axial direction of the nozzle forms an included angle of 40 degrees with the surface of the steel strip 1 .

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Abstract

The invention belongs to the field of steel strip production, and particularly relates to an environment-friendly thorough method for removing oxide, namely scale, on the surface of a steel strip with a fine condition. The method includes the steps: A, feeding the steel strip into a scale breaking device to break the scale on the surface of the steel strip; B, feeding the steel strip treated in the step A into a sand blaster, blasting steel shots, high-pressure water and high-pressure air to the surface of the steel strip, and further breaking and washing the scale on the surface of the steel strip; C, feeding the steel strip treated in the step B into a brush roll device, polishing and brushing the surface of the steel strip and further removing residual scale and smoothening the surface of the steel strip; D, feeding the steel strip treated in the step C into a strip brush device and brushing off cuttings and remaining scale on the upper surface of the steel strip after polishing and brushing; E, feeding the steel strip treated in the step D into a cleaning device and washing the surface of the steel strip with clear water; and F, rolling the cleaned steel strip by the aid of a gripping roll.

Description

technical field [0001] The invention belongs to the field of steel strip production, and in particular relates to a method for removing oxide scales on the surface of steel strips. Background technique [0002] During the hot rolling process of steel strip cold rolling raw materials, dense oxide scale will be produced and adhered to the surface of the steel strip, which will seriously affect the quality of the steel strip. shortened and increased production costs. The traditional descaling method is to immerse the steel in various acidic solutions for pickling and descaling. There are also dikes installed in the pickling tank, jet nozzles are set in the dikes, and acid is sprayed onto the steel for pickling and descaling. , the above pickling method also inevitably produces over-pickling (that is, the reaction between acid and steel itself) and hydrogen embrittlement of steel during the pickling process, and the loss of steel is large. The acid mist produced by pickling ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C3/02B24C5/04B24C9/00
Inventor 高金林
Owner HUZHOU JINYE ELECTRONICS MATERIAL
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