Double-roller rolling strip steel machine side seal board surface recombination coating

A technology of surface compounding and compounding coating, applied in the direction of coating, mold, mold composition, etc., can solve the problems of difficult mass industrial production of twin-roll casting and rolling strip mill, shortening the life of side sealing plates, and reducing production efficiency, etc. , to achieve the effect of ensuring large-scale industrial production, reducing maintenance costs and improving service life

Inactive Publication Date: 2008-09-10
戚建明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent molten steel from overflowing, side sealing plates are installed on both ends of the double rollers. The side sealing plates are made of refractory materials, generally high-temperature fused quartz. The side sealing plates directly contact the high-temperature molten steel, resulting in shortened life of the side sealing plates. Frequent maintenance and replacement It is difficult to carry out large-scale industrial production of twin-roll cast-rolling strip machines, which reduces production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: the technical solution of the present invention is that this composite coating is made up of following component mass percent: graphite 50%, bentonite 15%, high aluminum powder 15%, rosin 10%, alcohol 10%.

[0010] The composite paint of the present invention is made by the following method: firstly, put graphite, bentonite, high alumina powder into the porcelain container of inclination angle 15 degrees and rotate for 4 hours, the speed of rotation is 60 rpm; secondly, add rosin, alcohol The solution was stirred for 2 hours; finally, water was added every 15 minutes until a rheological coating solution was prepared, and the water content was 20%.

[0011] The spraying method of the composite paint of the present invention is as follows: first, the side sealing plate is heated to 80 degrees; secondly, the paint is sprayed onto the side surface of the side sealing plate with a paint spray gun, and the second layer is continued to be sprayed after the coating...

Embodiment 2

[0013] Embodiment 2: the technical solution of the present invention is that this composite coating is made up of following component mass percent: graphite 60%, bentonite 10%, high alumina powder 22.5%, rosin 8.5%, alcohol 9%.

[0014] The composite paint of the present invention is made by the following method: firstly, put graphite, bentonite, high alumina powder into the porcelain container of inclination angle 15 degrees and rotate for 4 hours, the speed of rotation is 60 rpm; secondly, add rosin, alcohol The solution was stirred for 2 hours; finally, water was added every 15 minutes until a rheological coating solution was prepared, and the water content was 30%.

[0015] The spraying method of the composite paint of the present invention is as follows: first, the side sealing plate is heated to 100 degrees; secondly, the paint is sprayed onto the side surface of the side sealing plate with a paint spray gun, and the second layer is continued to be sprayed after the coati...

Embodiment 3

[0017] Embodiment 3: The technological solution of invention is that this composite coating is made up of following component mass percent: graphite 70%, bentonite 5%, high aluminum powder 10%, rosin 7%, alcohol 8%.

[0018] The composite paint of the present invention is made by the following method: firstly, put graphite, bentonite, and high alumina powder into a porcelain container with an inclination angle of 15 degrees and rotate it for 4 hours at a speed of 60 rpm; secondly, add rosin and alcohol into the container , continue to stir for 2 hours; finally, add water once every 15 minutes until a rheological coating solution is made, wherein the water content is 40%.

[0019] The spraying method of the composite paint of the present invention is as follows: firstly, the side sealing plate is heated to 120 degrees; secondly, the coating is sprayed onto the side surface of the side sealing plate with a paint spray gun, and the second layer is continued to be sprayed after the...

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PUM

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Abstract

The invention discloses a surface compound dope of the side sealing plate of a double-roll cast-rolling strip mill. The compound dope consists of the following components: 50 to 70 percent of black lead, 5 to 15 percent of bentonite, 10 to 15 percent of high-alumina fly, 7 to 10 percent of colophony and 8 to 10 percent of alcohol according to mass proportion. The compound dope of the invention resists the high temperature of 1500 to 1700 DEG C, has the high adhesive attraction, is hard to fall off, improves the service life of the side sealing plate, reduces the maintaining cost, ensures the commercial production in batch, increases the economic benefits and has no effects on the components and the quality of strip steel.

Description

technical field [0001] The invention relates to casting and rolling technology in the metallurgical industry, in particular to a composite coating on the surface of side sealing plates of a twin-roll casting and rolling strip mill. Background technique [0002] In the twin-roll casting technology, molten steel is directly poured into a pair of relatively rotating casting rolls, and the molten steel is cooled and crystallized on the casting rolls, and thin strip steel is drawn out from the gap between the two rolls. In order to prevent molten steel from overflowing, side sealing plates are installed on both ends of the double rollers. The side sealing plates are made of refractory materials, generally high-temperature fused quartz. The side sealing plates directly contact the high-temperature molten steel, resulting in shortened life of the side sealing plates. Frequent maintenance and replacement The twin-roll cast-rolling strip mill is difficult to carry out large-scale ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 张玉良
Owner 戚建明
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