Injection device and method for uniformly lubricating roll gap of rolling mill

A technology of spraying device and spraying method, which is applied in the direction of rolls, metal rolling, metal rolling, etc., can solve the problems of easy dripping and splashing of emulsion, and achieve the effect of thin product specifications and uniform surface quality

Active Publication Date: 2013-09-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a spraying device for evenly lubricating the roll gap of a rolling mill. Lubrication and sufficient oil film thickness

Method used

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  • Injection device and method for uniformly lubricating roll gap of rolling mill
  • Injection device and method for uniformly lubricating roll gap of rolling mill
  • Injection device and method for uniformly lubricating roll gap of rolling mill

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Embodiment

[0052] Such as Figure 4 As shown, the second spray device 103 is arranged on the lower surface of the steel strip 104, and this part of the emulsion is directly sprayed on the surface of the rotating work roll through the spray rack 103, and this part of the emulsion is brought to the surface by the rotation of the work roll. The emulsion that enters the lower roll gap and the spray frame 102 directly sprays on the surface of the steel strip merges to form a certain lubricating oil film thickness. In this way, the problem that the emulsion flow rate of the lower spray frame 102 is too small, the oil film thickness is too small, and the emulsion flow rate is too large, which is easy to drip and splash, is solved.

[0053] The injection method of injection device of the present invention is specifically:

[0054] In the first step, the equipment is transformed, and the second spray rack 103 is arranged on the lower surface of the steel strip, and the spray rack 103 sprays the ...

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Abstract

The invention discloses an injection device for uniformly lubricating a roll gap of a rolling mill. The injection device comprises a direct injection emulsion spraying rack (101) arranged on the upper surface of strip steel (104) and at an inlet of a rolling mill rack, a direct injection emulsion spraying rack (102) arranged on the lower surface of the strip steel and at the inlet of the rolling mill rack and a direct injection emulsion spraying rack (103) arranged on the lower surface of the strip steel (104) and at the inlet of the rolling rack. The invention also discloses an injection method comprising the following steps of: 1, determining the distance from a nozzle in the spraying rack (103) to a centerline of a roller (105) and the distance from the nozzle in the spraying rack (103) to a rolling centerline; 2, determining the angle dimension between the nozzle and the horizontal plane; and 3, determining the injection flow of each spraying rack. By adopting the injection device and the injection method, the problem of easily dripping and splashing when the emulsion flow is excessive is solved; ample lubrication in a lower roll gap and sufficient oil film thickness are also realized; and the uniformity of lubricating oil film thicknesses of the upper and the lower roll gaps are simultaneously guaranteed.

Description

technical field [0001] The invention relates to a spraying device, in particular to a spraying device for uniformly lubricating the roll gap of a rolling mill, in particular to a spraying device for rolling gap lubrication in a strip rolling mill by direct injection of water-oil emulsion. The invention also relates to a spraying method for uniform lubrication of rolling mill roll gaps. Background technique [0002] For cold rolling, good process lubrication is the basis for ensuring rolling stability. On this basis, in order to ensure good surface quality, a uniform oil film is required during rolling. In order to further improve the surface quality of products, direct injection emulsion is widely used in cold-rolled strips with thin product thickness and high surface quality requirements. Conventionally, the direct-injection emulsion system is sprayed directly onto the surface of the strip, and the emulsion forms a uniform oil film on the surface of the strip and then ente...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/02B21B27/10
Inventor 李秀军吴首民王俊怡
Owner BAOSHAN IRON & STEEL CO LTD
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