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Method for lubrication in heat-rolling process

A process lubrication and rolling mill technology, which is applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of small service life of support rolls, small reduction in rack load, and large rack load, etc., to improve production capacity and production efficiency , Rack vibration mitigation, reduce the effect of roll changing cycle

Inactive Publication Date: 2007-08-29
GUANGZHOU PEARL RIVER STEEL & IRON
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the work roll lubrication technology is applied to the rolling of thin-gauge, high-alloy steel grades and rolls made of high-speed steel, and the load reduction of the stand is small, especially for the front section of the hot tandem rolling unit in the thin slab continuous casting and rolling process. Stands, each stand has a large load, a large reduction rate, the temperature of the rolled strip is high, and the working conditions of the rolls are more severe. When rolling thin gauges, the work roll lubrication technology reduces the load of the stand significantly. , the vibration of the frame is still obvious, which greatly affects the life of the equipment, product quality and stable rolling of thin gauges
In addition, the work roll lubrication technology cannot lubricate the backup roll, and the effect of extending the service life of the backup roll is small

Method used

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  • Method for lubrication in heat-rolling process
  • Method for lubrication in heat-rolling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for hot rolling process lubrication comprises the following steps:

[0028] (1) Selection of hot-rolling oil: select a hot-rolling oil with certain performance indicators, and some performance indicators of the hot-rolling oil selected in the implementation are shown in Table 1.

[0029] Table 1 Some performance indicators of hot rolling oil

[0030] Exterior

yellow transparent liquid

Density (g / cm 3 )

0.89

Viscosity (40℃, mm 2 )

320

Acid value (mgKOH / g)

1

Saponification value (mgKOH / g)

40

Tipping point (°C)

214

[0031] (2) The water cutting plate of the upper supporting roller is installed on the outlet side of the frame, and the angle between the installation angle and the horizontal direction is 45°; the water cutting plate of the lower supporting roller is installed on the lower inlet side of the frame, and the installation angle is 25° from the radial dir...

Embodiment 2

[0041] Relevant difference specifically comprises the following aspects in embodiment 2 and embodiment 1, all the other are with embodiment 1:

[0042] (1) The water cutting plate of the upper support roller is installed on the outlet side of the frame, and the angle between the installation angle and the horizontal direction is 60°. to 35°.

[0043] (2) The nozzle applied to the upper support roll is installed under the water cutting plate of the upper support roll, the angle with the center of the upper support roll in the horizontal direction is 5° and vertical to the roll surface, and the nozzle is 250mm away from the roll surface; the nozzle installed on the lower support roll The horizontal direction between the lower exit side of the frame and the center of the lower support roller is 45° and vertical to the roller surface, and the distance from the nozzle to the roller surface is 240mm.

[0044] (3) The oil supply of the upper and lower work rolls is 300ml / min, the wo...

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Abstract

The invention disclose a hot rolling technological lubrication method that means the roll surface of the hot mill support roll and working roll is sprayed by the oil-water mixture to lubricate. This method can reduce frame load, relieve frame libration, prolong the useful life of the support roll and working roll, increase capacity and production efficiency, improve thin and ultra-thin rolling etc.

Description

technical field [0001] The invention relates to a method for lubricating a hot rolling process, in particular to a method for lubricating a thin slab continuous casting and rolling process for a hot rolling process. Background technique [0002] The traditional technological process and the existing thin slab continuous casting and rolling process hot rolling unit process lubrication generally adopt the work roll process lubrication technology, that is, the oil-water mixture is sprayed on the roll surface of the work roll to lubricate the roll. This technology has a certain effect on reducing the rack load, protecting the roll surface of the work roll, prolonging the rolling kilometers of the work roll, and improving the surface quality of the strip. However, the work roll lubrication technology is applied to the rolling of thin-gauge, high-alloy steel grades and rolls made of high-speed steel, and the load reduction of the stand is small, especially for the front section of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B28/00B21B27/10
Inventor 谢劲松李轲新毛新平范胜标高驰余晖王朝晖
Owner GUANGZHOU PEARL RIVER STEEL & IRON
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