CN104232284A - Sliding plate lubricant and preparation method thereof - Google Patents
Sliding plate lubricant and preparation method thereof Download PDFInfo
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- CN104232284A CN104232284A CN201410499483.4A CN201410499483A CN104232284A CN 104232284 A CN104232284 A CN 104232284A CN 201410499483 A CN201410499483 A CN 201410499483A CN 104232284 A CN104232284 A CN 104232284A
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Abstract
The invention discloses a sliding plate lubricant coating sliding plates of a sliding gate system of a steel ladle and a tundish to reduce the friction coefficient between the sliding plates. The sliding plate lubricant comprises the following components in parts by weight: 2-4 parts of xanthan gum, 2-4 parts of guar gum, 0.1-0.5 part of sodium polyacrylate, 2-5 parts of styrene-acrylic emulsion, 85-90 parts of water, 0.5-1 part of sodium bentonite, 0.1-0.5 part of tween, 5-10 parts of sodium silicate, 5-10 parts of potassium silicate, 5-10 parts of sodium dihydrogen phosphate, 5-10 parts of carbon black, 0.1-0.5 part of isothiazolinone, 2-5 parts of boron carbide and 25-35 parts of crystalline flake graphite. The sliding plate lubricant is prepared by stirring and ball-milling. The sliding lubrication and the high-temperature oxidation resistance of the sliding plates can be improved by virtue of the sliding plate lubricant.
Description
Technical field
The present invention relates to a kind of slide gate nozzle sliding plate lubricant coating, especially a kind of water base lubricant improving sled surface lubrication and high-temperature oxidation resistance, and preparation method thereof.
Background technology
Present domestic and international most ladle, tundish have all loaded onto slide gate nozzle system.Slide brick is the key components of slide gate nozzle, is the parts directly controlling molten steel, determine slide gate nozzle function.The manufacturing process of slide plate is different from former refractory materials, it has molten steel function of injecting and flow adjustment function, the manufacture of brick except mixing, shaping, burn till, check except these operations, also have the mechanical workout of slipping plane, processing and external overall adjustment operation be installed.In use, because the chemical erosion and physics needing to bear over a long time high-temperature molten steel is washed away, the thermal shocking of fierce and transition and mechanical wear effect, working conditions is very harsh; Meanwhile, for realizing freely openable steel stream, slipping plane planeness and form factor size thereof all need to be strict with.Therefore slide plate must have the characteristics such as high strength, wear-resistant, the resistance to slagging of retractory and good thermal shock stability.
After watering time use more, because the frequent friction of contact surface will inevitably bring sled surface to pull, to fluff and ligulate district adheres to the phenomenon such as molten steel, thus increase the friction of slide plate slides, the damaged integrity of sled surface tight zone, reduces degree of flexibility and the corrosion resistance thereof of slide plate slides.Meanwhile, the increase of slide plate contact surface friction will affect the accuracy of its degree of flexibility of sliding and molten steel flow control.Sliding plate lubricant coating is exactly under this background improved constantly the requirement of slide plate, take the lead in by Japan scholar's Study and Development out, be applied to the product of slide plate high temperature lubricating aspect.Slide board lubricating coating not only can reduce the frictional coefficient between slide plate, also to slide plate, especially can play the effect of oxidation protection to the slide plate of Al_2O_3-C based, thus increases the work-ing life of slide plate.
In actual use, because slide plate slip coating inevitably contacts with air, and the graphite in coating is at high temperature easy to occur oxidation consumption, so just reduce the working life of coating, simultaneously because the consumption of coating, also accelerate the erosion for the slide plate mouth of a river of molten steel and slag.Therefore, improving with graphite the antioxidant property of the slide board lubricating coating being main component, is the key ensureing slide plate work-ing life.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the sliding plate lubricant coating of a kind of oilness when can increase slide plate slides and high temperature oxidation resistance is provided, and the preparation method of this sliding plate lubricant coating.
Described sliding plate lubricant coating, its component ratio by mass number meter, comprises following component: xanthan gum 2 ~ 4 parts, guar gum 2 ~ 4 parts, sodium polyacrylate 0.1 ~ 0.5 part, benzene emulsion 2 ~ 5 parts, 85 ~ 90 parts, water, sodium bentonite 0.5 ~ 1 part, tween 0.1 ~ 0.5 part, water glass 5 ~ 10 parts, potassium silicate 5 ~ 10 parts, SODIUM PHOSPHATE, MONOBASIC 5 ~ 10 parts, carbon black 5 ~ 10 parts, Kathon CG 0.1 ~ 0.5 part, norbide 2 ~ 5 parts, crystalline flake graphite 25 ~ 35 parts.
As the preferred version of sliding plate lubricant coating of the present invention, wherein said Na-bentonite soil granularity is 200 ~ 325 orders; Described norbide granularity is 0.5 ~ 1 μm; Described crystalline flake graphite mean particle size is 1 ~ 2 μm, carbon content >=99%.
Described xanthan gum, guar gum are thickening material; Sodium polyacrylate is thixotropic agents; Described benzene emulsion is membrane-forming agent; Described water is dispersion medium, general employing purified drinking water; Described sodium bentonite is suspension agent, and granularity is 200 ~ 325 orders; Described tween is the dispersion agent of graphite in water, described water glass, potassium silicate and SODIUM PHOSPHATE, MONOBASIC is high-temperature agglomerant.Technical pure; Described carbon black is strengthening agent; Described Kathon CG is sanitas; Described norbide is antioxidant, and granularity is 0.5 ~ 1 μm; Described crystalline flake graphite is solid lubricant, and mean particle size is 1 ~ 2 μm, carbon content >=99%.
The preparation method of described sliding plate lubricant coating, comprises the following steps:
(1) pre-mixing liquor is prepared: xanthan gum 2 ~ 4 parts, guar gum 2 ~ 4 parts, sodium polyacrylate 0.1 ~ 0.5 part, benzene emulsion 2 ~ 5 parts are directly joined and be equipped with in the circulation stirring ball mill of 85 ~ 90 parts of water, be under the condition of 200 revs/min at rotating speed, with the uncertain zirconium oxide balls of yttrium oxide part for grinding medium, high-speed stirring, ball milling about 10 ~ 15 minutes, make above-mentioned auxiliary agent be dissolved in water; Then, in circulation stirring ball mill, add sodium bentonite 0.5 ~ 1 part, tween 0.1 ~ 0.5 part, water glass 5 ~ 10 parts, potassium silicate 5 ~ 10 parts, SODIUM PHOSPHATE, MONOBASIC 5 ~ 10 parts, carbon black 5 ~ 10 parts, sanitas 0.1 ~ 0.5 part, norbide 2 ~ 5 parts, low whipping speed is stir under the condition of 100 revs/min to obtain pre-mixing liquor in 1 ~ 2 hour;
(2) in pre-mixing liquor, add the crystalline flake graphite of 25 ~ 35 parts, low whipping speed is stir 2 ~ 4 hours under the condition of 100 revs/min, and discharging, namely obtains described sliding plate lubricant coating.
Tool of the present invention has the following advantages:
1, the thickening material that sliding plate lubricant coating of the present invention adopts is xanthan gum and guar gum, both all can keep certain viscosity and stability in acid, neutral and alkaline solution, macromolecular chain is easy on graphite granule surface chimeric simultaneously, make graphite by space steric effect, stable suspersion is among lubricant.
2, the sodium polyacrylate that adopts of sliding plate lubricant coating of the present invention is as thixotropic agent, lubricant is possessed leave standstill to deposit not flow, but through stirring the rheological characteristics namely occurring shear shinning, the long-term stability being conducive to coating is deposited.
3, sliding plate lubricant coating of the present invention adopts the ultra-fine crystalline graphite powder that carbon content is high, granularity is 1 ~ 2 μm to be main raw material, take tween 80 as dispersion agent, can ensure that graphite granule surface is infiltrated well by water, improve the dispersiveness of graphite in water; Simultaneously under the effect of lithium bentonite, graphite granule is suspended in for a long time in coating and layering or sedimentation does not occur, and ensure that the long-term stable homogeneous of the performance of coating;
4, slide board lubricating coating of the present invention, because thickening material does not have water retention characteristic, therefore rate of drying is fast at normal temperatures, slip coating dense uniform, and flat appearance is smooth; By adding these high-temperature agglomerants of water glass, potassium silicate and SODIUM PHOSPHATE, MONOBASIC, making equadag coating high with slide plate bonding strength under the high temperature conditions, maintaining good lubricity, also can coal-tar middle oil the oozing out of remarkable anti-limited slip plate.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment one: a kind of preparation method of sliding plate lubricant coating, comprises following processing step:
(1) pre-mixing liquor is prepared: take 85 kilograms of pure water, join in circulation stirring ball mill, and then add 2 kilograms of xanthan gum, 4 kilograms of guar gums, 0.1 kilogram of sodium polyacrylate, 2 kilograms of benzene emulsions, low whipping speed is stir 10 minutes under the condition of 200 revs/min, and above-mentioned auxiliary agent is all dissolved; And then add 0.5 kilogram of sodium bentonite, 0.1 kilogram of tween, 5 kilograms of water glass, 10 kilograms of potassium silicates, 5 kg of phosphoric acid sodium dihydrogens, 5 kilograms of carbon blacks, 0.1 kilogram of Kathon CG, 2 kilograms of norbides, carry out ball grinding stirring mixing, obtain pre-mixing liquor.
(2) in pre-mixing liquor, add 35 kilograms of crystalline flake graphites, be stir 2 hours under the condition of 100 revs/min at rotating speed, discharging, namely obtains described sliding plate lubricant coating.
Sliding plate lubricant coating of the present invention through 3 months leave standstill after, do not find obvious sediment, coating is uniform and stable, and painting four glasss of values of coating are 46 seconds, brush and flow leveling excellent, the defects such as the pit of sled surface can be covered completely.Through having carried out the secondary commerical test of 150 covers on the slide plate working face of the large water-coating port of steelworks, the sliding number of times that on average connects of slide plate is 3.6 times/set, after test, sled surface still leaves fine and close slip coating, coatingsurface is smooth, without scratching vestige, slide plate section, close to the place of coating, does not find the oxidative phenomena of carbon element.
Embodiment two: a kind of preparation method of sliding plate lubricant coating, comprises following processing step:
(1) pre-mixing liquor is prepared: take 87.5 kilograms of pure water, join in circulation stirring ball mill, and then add 3 kilograms of xanthan gum, 3 kilograms of guar gums, 0.25 kilogram of sodium polyacrylate, 3.5 kilograms of benzene emulsions, low whipping speed is stir 12 minutes under the condition of 200 revs/min, and above-mentioned auxiliary agent is all dissolved; And then add 0.8 kilogram of sodium bentonite, 0.3 kilogram of tween, 8 kilograms of water glass, 7 kilograms of potassium silicates, 7.5 kg of phosphoric acid sodium dihydrogens, 7.5 kilograms of carbon blacks, 0.25 kilogram of Kathon CG, 3.5 kilograms of norbides, carry out ball grinding stirring mixing, obtain pre-mixing liquor.
(2) in pre-mixing liquor, add 30 kilograms of crystalline flake graphites, be stir 3 hours under the condition of 150 revs/min at rotating speed, discharging, namely obtains described sliding plate lubricant coating.
Sliding plate lubricant coating of the present invention through 3 months leave standstill after, do not find obvious sediment, coating is uniform and stable, and painting four glasss of values of coating are 51 seconds, brush and flow leveling excellent, the defects such as the pit of sled surface can be covered completely.Through having carried out the secondary commerical test of 150 covers on the slide plate working face of the large water-coating port of steelworks, the sliding number of times that on average connects of slide plate is 4.2 times/set, after test, sled surface still leaves fine and close slip coating, coatingsurface is smooth, without scratching vestige, slide plate section, close to the place of coating, does not find the oxidative phenomena of carbon element.
Embodiment three: a kind of preparation method of sliding plate lubricant coating, comprises following processing step:
(1) pre-mixing liquor is prepared: take 90 kilograms of pure water, join in circulation stirring ball mill, and then add 4 kilograms of xanthan gum, 2 kilograms of guar gums, 0.5 kilogram of sodium polyacrylate, 5 kilograms of benzene emulsions, low whipping speed is stir 15 minutes under the condition of 200 revs/min, and above-mentioned auxiliary agent is all dissolved; And then add 1 kilogram of sodium bentonite, 0.5 kilogram of tween, 10 kilograms of water glass, 5 kilograms of potassium silicates, 10 kg of phosphoric acid sodium dihydrogens, 10 kilograms of carbon blacks, 0.5 kilogram of Kathon CG, 5 kilograms of norbides, carry out ball grinding stirring mixing, obtain pre-mixing liquor.
(2) in pre-mixing liquor, add 25 kilograms of crystalline flake graphites, be stir 4 hours under the condition of 100 revs/min at rotating speed, discharging, namely obtains described backplate lubricant.
Sliding plate lubricant coating of the present invention through 3 months leave standstill after, do not find obvious sediment, coating is uniform and stable, and painting four glasss of values of coating are 41 seconds, brush and flow leveling excellent, the defects such as the pit of sled surface can be covered completely.Through having carried out the secondary commerical test of 150 covers on the slide plate working face of the large water-coating port of steelworks, the sliding number of times that on average connects of slide plate is 3.9 times/set, after test, sled surface still leaves fine and close slip coating, coatingsurface is smooth, without scratching vestige, slide plate section, close to the place of coating, does not find the oxidative phenomena of carbon element.
Claims (4)
1. a sliding plate lubricant coating, its component ratio by mass number meter, comprises following component: xanthan gum 2 ~ 4 parts, guar gum 2 ~ 4 parts, sodium polyacrylate 0.1 ~ 0.5 part, benzene emulsion 2 ~ 5 parts, 85 ~ 90 parts, water, sodium bentonite 0.5 ~ 1 part, tween 0.1 ~ 0.5 part, water glass 5 ~ 10 parts, potassium silicate 5 ~ 10 parts, SODIUM PHOSPHATE, MONOBASIC 5 ~ 10 parts, carbon black 5 ~ 10 parts, Kathon CG 0.1 ~ 0.5 part, norbide 2 ~ 5 parts, crystalline flake graphite 25 ~ 35 parts.
2. sliding plate lubricant coating according to claim 1, it is characterized in that, xanthan gum 3 parts, guar gum 3 parts, sodium polyacrylate 0.25 part, benzene emulsion 3.5 parts, 87.5 parts, water, sodium bentonite 0.8 part, tween 0.3 part, water glass 8 parts, potassium silicate 7 parts, SODIUM PHOSPHATE, MONOBASIC 7.5 parts, carbon black 7.5 parts, Kathon CG 0.25 part, norbide 3.5 parts, crystalline flake graphite 30 parts.
3. sliding plate lubricant coating according to claim 1 and 2, is characterized in that, described Na-bentonite soil granularity is 200 ~ 325 orders, and described norbide granularity is 0.5 ~ 1 μm, and described crystalline flake graphite mean particle size is 1 ~ 2 μm, carbon content >=99%.
4. produce a method for the sliding plate lubricant coating according to any one of claim 1 to 3, comprise the following steps:
Preparation pre-mixing liquor: xanthan gum, guar gum, sodium polyacrylate, benzene emulsion are directly joined and has been equipped with in the circulation stirring ball mill of water, be under the condition of 200 revs/min at rotating speed, with the uncertain zirconium oxide balls of yttrium oxide part for grinding medium, high-speed stirring, ball milling about 10 ~ 15 minutes, make above-mentioned auxiliary agent be dissolved in water; In circulation stirring ball mill, add sodium bentonite, tween, water glass, potassium silicate, SODIUM PHOSPHATE, MONOBASIC, carbon black, Kathon CG, norbide, low whipping speed is stir under the condition of 100 revs/min to obtain pre-mixing liquor in 1 ~ 2 hour;
In pre-mixing liquor, add crystalline flake graphite, low whipping speed is stir 2 ~ 4 hours under the condition of 100 revs/min, and discharging, namely obtains described sliding plate lubricant coating.
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| CN201410499483.4A CN104232284A (en) | 2014-09-19 | 2014-09-19 | Sliding plate lubricant and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371820A (en) * | 2014-09-29 | 2015-02-25 | 泰州优耐特新材料有限公司 | Slide plate lubricant and preparation method thereof |
| CN104560353A (en) * | 2014-12-31 | 2015-04-29 | 芜湖华金冲压加工件厂 | Preparation method of water-based lubricant for metal stamping |
| CN109294710A (en) * | 2018-11-26 | 2019-02-01 | 吴斌 | A kind of cutting fluid and preparation method thereof that stability in use is good |
| CN114163239A (en) * | 2021-11-12 | 2022-03-11 | 瑞泰马钢新材料科技有限公司 | Water-based carbon-containing sliding plate coating and preparation method thereof |
-
2014
- 2014-09-19 CN CN201410499483.4A patent/CN104232284A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371820A (en) * | 2014-09-29 | 2015-02-25 | 泰州优耐特新材料有限公司 | Slide plate lubricant and preparation method thereof |
| CN104560353A (en) * | 2014-12-31 | 2015-04-29 | 芜湖华金冲压加工件厂 | Preparation method of water-based lubricant for metal stamping |
| CN109294710A (en) * | 2018-11-26 | 2019-02-01 | 吴斌 | A kind of cutting fluid and preparation method thereof that stability in use is good |
| CN114163239A (en) * | 2021-11-12 | 2022-03-11 | 瑞泰马钢新材料科技有限公司 | Water-based carbon-containing sliding plate coating and preparation method thereof |
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