CN103537614B - A kind of large cast steel roll coating and preparation method thereof - Google Patents
A kind of large cast steel roll coating and preparation method thereof Download PDFInfo
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- CN103537614B CN103537614B CN201310517823.7A CN201310517823A CN103537614B CN 103537614 B CN103537614 B CN 103537614B CN 201310517823 A CN201310517823 A CN 201310517823A CN 103537614 B CN103537614 B CN 103537614B
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Abstract
The invention discloses a kind of large cast steel roll coating, this coating comprises 100 parts, acid-washed quartz powder, clay 1 ~ 2 part, bentonite 1 ~ 2 part, 1.5 ~ 2.5 parts, brown sugar, 15 ~ 25 parts, water, anticorrisive agent 0.1 ~ 0.2 part according to parts by weight.The preparation method of described coating, acid-washed quartz powder, clay, bentonite are dry mixed 1 ~ 2 minute according to putting into coating kolleroang after said ratio weighing, and the mixed grind that then adds water adds brown sugar after 20 hours and the discharging in 4 hours of anticorrisive agent mixed grind is stand-by, finally makes paste.Beneficial effect of the present invention is: use this coating can not only prevent cast steel roll from producing scab, reinforce sand mold, prevent from mo(U)ld face erosion from dope layer is cut falling to floating on being formed in molten metal being mingled with, improve roller surface quality and inherent quality, and cheap compared with zircon sand coating, thus significantly reduce production cost.
Description
Technical field
The present invention relates to a kind of coating and preparation method thereof, particularly relate to a kind of coating for large cast steel roll and preparation method thereof.
Background technology
As everyone knows, adopt cast paint to be improve the way that surface quality of continuous castings is the most practical and bring notable results, cast paint will obtain excellent effect, first will ensure the quality of itself.About the anti-burnon mechanism of coating, always overemphasizing dope layer can prevent metal from infiltrating the chemical reaction of casting mold hole supression molten metal and mold―metal interface in the past, to coach thought with refractory aggregate high inertia under pouring temperature, think that the refractoriness of refractory aggregate is the decisive factor of cast paint anti-burnon effect, it is higher better that refractoriness exceedes pouring temperature, therefore all adopts expensive zirconium English powder, schmigel etc. to prepare to this kind of heavy castings of cast steel roll coating.To the binding agent in coating, suspending agent, auxiliary agent etc. by the simple forming agent regarding coating as, the effect of their anti-burnon effect is out in the cold completely.In fact the organic matter in molding sand and coating and other be heated after labile material be that casting system creates specifically appropriate atmosphere, organic matter makes oxygen exhaust fast by thermal oxide, then under anaerobic conditions thermal decomposition, separate out bright carbon-coating thus form peel ply, the refractoriness that therefore steel moulder's paint is suitable and enough oxidisability or reducing atmosphere are the necessary conditions producing easy peel ply at cast(ing) surface.The current problems faced of these those skilled in the art how to develop the coating that a kind of price is cheaper, and use this coating can also obtain the surface of cast steel roll quality the same with coating such as expensive zirconium Ying Fen.
Summary of the invention
Object of the present invention is just to provide a kind of large cast steel roll coating and preparation method thereof, solves surface of cast steel roll scab, and the problem adopting zircon flour coating cost too high.
Object of the present invention is realized by following technical proposals:
A kind of large cast steel roll coating, this coating comprises 100 parts, acid-washed quartz powder, clay 1 ~ 2 part, bentonite 1 ~ 2 part, 1.5 ~ 2.5 parts, brown sugar, 15 ~ 25 parts, water, anticorrisive agent 0.1 ~ 0.2 part according to parts by weight.
As preferably, described anticorrisive agent is formalin or Sodium Benzoate.
The preparation method of described coating, it is characterized in that: acid-washed quartz powder, clay, bentonite are dry mixed 1 ~ 2 minute according to putting into coating kolleroang after said ratio weighing, then the mixed grind that adds water adds brown sugar after 20 hours and the discharging in 4 hours of anticorrisive agent mixed grind is stand-by, finally makes paste.
Compared with prior art, beneficial effect of the present invention is: use this coating can not only prevent cast steel roll from producing scab, reinforce sand mold, prevent from mo(U)ld face erosion from dope layer is cut falling to floating on being formed in molten metal being mingled with, improve roller surface quality and inherent quality, and cheap compared with zircon sand coating, thus significantly reduce production cost.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
A kind of large cast steel roll coating, this coating comprises 100 parts, acid-washed quartz powder, clay 1 ~ 2 part, bentonite 1 ~ 2 part, 1.5 ~ 2.5 parts, brown sugar, 15 ~ 25 parts, water, anticorrisive agent 0.1 ~ 0.2 part according to parts by weight.
Described anticorrisive agent is formalin or Sodium Benzoate.
The preparation method of described coating, acid-washed quartz powder, clay, bentonite are dry mixed 1 ~ 2 minute according to putting into coating kolleroang after said ratio weighing, and the mixed grind that then adds water adds brown sugar after 20 hours and the discharging in 4 hours of anticorrisive agent mixed grind is stand-by, finally makes paste.
The using method of this coating is that employing is closed lightly cutter and scraped by paste coating on molding sand surface, or paste coating is diluted with water rear brushing on molding sand surface.
Embodiment one
Casting mold is after this coating of employing, and pour into a mould specification φ 1200 × 2800, material is the roll of 65CrNiMo, casting of molten metal weight 43t, pouring temperature 1492 DEG C, 15 tons per minute of bag rising pouring of inclining, poring rate, and its casting case is as follows:
Adopt tangent gate rotary casting technology, adopt φ 100 ingate and φ 130 down gate, adopt the cast gate cup water yield to be 3 tons of cups, pour rear profile inside holding and unpack after 130 hours, roller surface is bright and clean, after processing detects, meet acceptance criteria.
Embodiment two
Cast specification φ 1260 × 1310, material is the roll of 45Cr4NiMoV, potting syrup weight 28t, pouring temperature 1490 DEG C, 15 tons per minute of poring rate, and type inside holding was unpacked after 135 hours, and roller surface is bright and clean.
Barrel diameter φ 400 ~ φ 1450 single poured weights 3 ~ 55 tons of tens thousand of tons of cast steel roll now produced by this coating, achieve the roll of fine surface quality, significantly reduce production cost, achieve good economic benefit.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a large cast steel roll coating, it is characterized in that: this coating comprises 100 parts, acid-washed quartz powder, clay 1 ~ 2 part, bentonite 1 ~ 2 part, 1.5 ~ 2.5 parts, brown sugar, 15 ~ 25 parts, water, anticorrisive agent 0.1 ~ 0.2 part according to parts by weight, the preparation method of described coating: acid-washed quartz powder, clay, bentonite are dry mixed 1 ~ 2 minute according to putting into coating kolleroang after said ratio weighing, then the mixed grind that adds water adds brown sugar after 20 hours and the discharging in 4 hours of anticorrisive agent mixed grind is stand-by, finally makes paste.
2. large cast steel roll coating according to claim 1, is characterized in that: described anticorrisive agent is formalin or Sodium Benzoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517823.7A CN103537614B (en) | 2013-10-29 | 2013-10-29 | A kind of large cast steel roll coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517823.7A CN103537614B (en) | 2013-10-29 | 2013-10-29 | A kind of large cast steel roll coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103537614A CN103537614A (en) | 2014-01-29 |
| CN103537614B true CN103537614B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310517823.7A Active CN103537614B (en) | 2013-10-29 | 2013-10-29 | A kind of large cast steel roll coating and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562589A (en) * | 2014-10-14 | 2016-05-11 | 河南金耐源新材料科技有限公司 | Porcelained powder and preparation method thereof |
| CN110315025A (en) * | 2019-07-22 | 2019-10-11 | 宜兴市国昌轧辊有限公司 | A kind of self-control cast steel roll mould wash and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053200A (en) * | 1990-10-24 | 1991-07-24 | 湖南省电力机械厂 | Magnesite cast steel coating |
| CN1666828A (en) * | 2005-01-18 | 2005-09-14 | 湖北工业大学 | Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder |
| CN101015850A (en) * | 2007-01-24 | 2007-08-15 | 中国重型汽车集团有限公司 | Water borne coating for metal mold casting and its prepn. |
| CN101428328A (en) * | 2008-12-06 | 2009-05-13 | 华中科技大学 | Powdery paint for lost foam casting of cast iron |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5881541A (en) * | 1981-11-11 | 1983-05-16 | Chobe Taguchi | Mold coating material for furan resin mold |
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2013
- 2013-10-29 CN CN201310517823.7A patent/CN103537614B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053200A (en) * | 1990-10-24 | 1991-07-24 | 湖南省电力机械厂 | Magnesite cast steel coating |
| CN1666828A (en) * | 2005-01-18 | 2005-09-14 | 湖北工业大学 | Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder |
| CN101015850A (en) * | 2007-01-24 | 2007-08-15 | 中国重型汽车集团有限公司 | Water borne coating for metal mold casting and its prepn. |
| CN101428328A (en) * | 2008-12-06 | 2009-05-13 | 华中科技大学 | Powdery paint for lost foam casting of cast iron |
Non-Patent Citations (1)
| Title |
|---|
| 铸铁件消失模涂料的研究与应用;谭玉华等;《金属加工》;20101231(第1期);第64页第2栏第3段-第67页第1栏第2段，表3 * |
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| CN103537614A (en) | 2014-01-29 |
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