CN102320842A - Method for preparing ceramic coating for replacing refractory coating prepared with centrifugal cast-steel pipe thermal mold method - Google Patents
Method for preparing ceramic coating for replacing refractory coating prepared with centrifugal cast-steel pipe thermal mold method Download PDFInfo
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- CN102320842A CN102320842A CN201110160452A CN201110160452A CN102320842A CN 102320842 A CN102320842 A CN 102320842A CN 201110160452 A CN201110160452 A CN 201110160452A CN 201110160452 A CN201110160452 A CN 201110160452A CN 102320842 A CN102320842 A CN 102320842A
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Abstract
The invention discloses a method for preparing a ceramic coating for replacing a refractory coating prepared with a centrifugal cast-steel pipe thermal mold method. The method comprises the following steps of: adding water into a ceramic coating raw material to obtain slurry; coating the slurry onto the inner surface of a pipe mold in a flowing way; heating the pipe mold at low temperature for fully evaporating free water; and after the coating is solidified fully, sintering with high-temperature molten steel till crystal waster is released fully to obtain the ceramic coting for replacing the refractory coating prepared with the centrifugal cast-steel pipe thermal mold method. The ceramic coating prepared with the method has the advantages of lowering the production cost, realizing continuous production and not influencing the pipe blank quality.
Description
Technical field
The present invention relates to a kind of preparation method of ceramic coating, particularly a kind of ceramic coating preparation method who replaces Centrifugal Steel pipe thermodyn process fire-resistant coating.
Background technology
In the traditional centrifugal cast-steel pipe thermodyn process production process; Pipe of every production need spray coating one time, needs the remaining coating of cleaning pipe die internal surface behind the tube drawing, and the coating dust has a strong impact on production work environment and workers health; And being difficult to continuous production, production efficiency is low.For the thin-walled pipe, coating accounts for the large percentage of production cost, has increased production cost; Because contain the caking agent of the property initiated in the coating, under the effect of high-temperature molten steel, these caking agents can produce a large amount of gas; On pipe, produce casting flaws such as air pit, pin hole; Influence the visual appearance of pipe, especially for the thin-walled pipe, these defectives are the major causes that produce waste product.
Summary of the invention
The technical problem that the present invention will solve provides a kind of ceramic coating preparation method who replaces Centrifugal Steel pipe thermodyn process fire-resistant coating.
1. ceramic coating preparation method who replaces Centrifugal Steel pipe thermodyn process fire-resistant coating is characterized in that may further comprise the steps:
(1) take by weighing each raw material according to following mass percent, mix and make the ceramic coating raw material:
Sintering plate corundum 70-94.5%
Calcium aluminate 5-29.5%
Starso 0.5-1%
(2) in the ceramic coating raw material, add water and process slurry, the quality of water is 0.3-0.4 a times of ceramic coating raw materials quality.
(3) keeping the pipe die rotating speed is 250-300rpm, with 2-4 minute time with above-mentioned slurry flow coat to the pipe die internal surface.
(4) under 100-150 ℃ of temperature the heating pipe die treated that free water evaporated fully in 0.5-1 hour, solidify fully the ceramic coating work in-process.
(5) keeping the pipe die rotating speed is 180-220rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 1300-2000 ℃; Sintering time is 4-7 minute; Treat that crystal water wherein all is released out, make the ceramic coating of above-mentioned replacement Centrifugal Steel pipe thermodyn process refractory coating.
The present invention has the following advantages:
(1) choosing calcium aluminate is sticker, and calcium aluminate has higher refractoriness, does not produce gas, does not influence the composition of molten steel.
(2) the present invention has overcome the defective that the every production of paint coatings pipe need spray a coating, and the application's ceramic coating can prop up pipe by continuous production 10-40, has improved environment, has reduced cost, has realized continuous production.
(3) ceramic coating employing sintering plate corundum of the present invention is a ceramic aggregate, and fabulous volume stability is arranged under the high temperature, and good heat-shock resistance and anti-slag action property, does not receive the erosion of reducing atmosphere, melten glass liquid and molten metal; Crystal grain intensity is high, and high-temperature machinery intensity and wear resistance are better, and this material is high temperature resistant, do not produce gas, can not exert an influence to molten steel composition.
Embodiment
Embodiment 1:
(1) gets each component by following table 1 respectively, mix, make the ceramic coating raw material.
(2) in the ceramic coating raw material, add 15.9kg water and process slurry.
(3) keeping the pipe die rotating speed is 250rpm, with 2 minutes times with above-mentioned slurry flow coat to the pipe die internal surface.
(4) under 100 ℃ of temperature the heating pipe die treated that free water evaporated fully in 1 hour, solidify fully the ceramic coating work in-process.
(5) keeping the pipe die rotating speed is 220rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 1300 ℃; Sintering time is 4 minutes, treats that crystal water wherein all is released out, makes the ceramic coating of above-mentioned replacement Centrifugal Steel pipe thermodyn process refractory coating.
Embodiment 2:
(1) gets each component by following table 1 respectively, mix, make the ceramic coating raw material.
(2) in the ceramic coating raw material, add 22.8kg water and process slurry.
(3) keeping the pipe die rotating speed is 300rpm, with 4 minutes times with above-mentioned slurry flow coat to the pipe die internal surface.
(4) under 150 ℃ of temperature the heating pipe die treated that free water evaporated fully in 0.5 hour, solidify fully the ceramic coating work in-process.
(5) keeping the pipe die rotating speed is 180rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 2000 ℃; Sintering time is 7 minutes, treats that crystal water wherein all is released out, makes the ceramic coating of above-mentioned replacement Centrifugal Steel pipe thermodyn process refractory coating.
Embodiment 3:
(1) gets each component by following table 1 respectively, mix, make the ceramic coating raw material.
(2) in the ceramic coating raw material, add 17kg water and process slurry.
(3) keeping the pipe die rotating speed is 280rpm, with 4 minutes times with above-mentioned slurry flow coat to the pipe die internal surface.
(4) under 130 ℃ of temperature the heating pipe die treated that free water evaporated fully in 0.75 hour, solidify fully the ceramic coating work in-process.
(5) keeping the pipe die rotating speed is 200rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 1620 ℃; Sintering time is 5 minutes, treats that crystal water wherein all is released out, makes the ceramic coating of above-mentioned replacement Centrifugal Steel pipe thermodyn process refractory coating.
Embodiment 4:
(1) gets each component by following table 1 respectively, mix, make the ceramic coating raw material.
(2) in the ceramic coating raw material, add 19kg water and process slurry.
(3) keeping the pipe die rotating speed is 280rpm, with 4 minutes times with above-mentioned slurry flow coat to the pipe die internal surface.
(4) under 140 ℃ of temperature the heating pipe die treated that free water evaporated fully in 0.6 hour, solidify fully the ceramic coating work in-process.
(5) keeping the pipe die rotating speed is 200rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 1580 ℃; Sintering time is 6 minutes, treats that crystal water wherein all is released out, makes the ceramic coating of above-mentioned replacement Centrifugal Steel pipe thermodyn process refractory coating.
Table 1
| Each component concentration | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Sintering plate corundum (kg) | 37.1 | 53.87 | 42 | 45 |
| Calcium aluminate (kg) | 15.64 | 2.85 | 12 | 10 |
| Starso (kg) | 0.27 | 0.29 | 0.4 | 0.55 |
Claims (1)
1. ceramic coating preparation method who replaces Centrifugal Steel pipe thermodyn process fire-resistant coating is characterized in that may further comprise the steps:
(1) take by weighing each raw material according to following mass percent, mix and make the ceramic coating raw material:
Sintering plate corundum 70-94.5%
Calcium aluminate 5-29.5%
Starso 0.5-1%
(2) in the ceramic coating raw material, add water and process slurry, the quality of water is 0.3-0.4 a times of ceramic coating raw materials quality;
(3) keeping the pipe die rotating speed is 250-300rpm, with 2-4 minute time with above-mentioned slurry flow coat to the pipe die internal surface;
(4) under 100-150 ℃ of temperature the heating pipe die treated that free water evaporated fully in 0.5-1 hour, solidify fully the ceramic coating work in-process;
(5) keeping the pipe die rotating speed is 180-220rpm; With the high-temperature molten steel sintering of above-mentioned ceramic coating work in-process with 1300-2000 ℃; Sintering time is 4-7 minute, treats that crystal water wherein all is released out, makes the ceramic coating of said replacement Centrifugal Steel pipe thermodyn process refractory coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110160452 CN102320842B (en) | 2011-06-15 | 2011-06-15 | Method for preparing ceramic coating for replacing refractory coating prepared with centrifugal cast-steel pipe thermal mold method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110160452 CN102320842B (en) | 2011-06-15 | 2011-06-15 | Method for preparing ceramic coating for replacing refractory coating prepared with centrifugal cast-steel pipe thermal mold method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102320842A true CN102320842A (en) | 2012-01-18 |
| CN102320842B CN102320842B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110160452 Active CN102320842B (en) | 2011-06-15 | 2011-06-15 | Method for preparing ceramic coating for replacing refractory coating prepared with centrifugal cast-steel pipe thermal mold method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900663A (en) * | 2012-09-27 | 2013-01-30 | 四川久信科技集团有限公司 | Cylinder sleeve and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1268128A (en) * | 1969-12-03 | 1972-03-22 | Foseco Int | Protective coatings |
| JPH05339081A (en) * | 1992-02-13 | 1993-12-21 | Lonza Ag | Hard oxide particle coated with ceramic pigment, production thereof and application thereof |
| CN1919786A (en) * | 2006-09-08 | 2007-02-28 | 鞍山科技大学 | Manufacture method of ceramic lining composite square steel tube |
| CN101913872A (en) * | 2010-07-22 | 2010-12-15 | 萍乡市金辉环保有限责任公司 | Production method of silicon carbide-silicon oxide ceramic membrane filter tube |
-
2011
- 2011-06-15 CN CN 201110160452 patent/CN102320842B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1268128A (en) * | 1969-12-03 | 1972-03-22 | Foseco Int | Protective coatings |
| JPH05339081A (en) * | 1992-02-13 | 1993-12-21 | Lonza Ag | Hard oxide particle coated with ceramic pigment, production thereof and application thereof |
| CN1919786A (en) * | 2006-09-08 | 2007-02-28 | 鞍山科技大学 | Manufacture method of ceramic lining composite square steel tube |
| CN101913872A (en) * | 2010-07-22 | 2010-12-15 | 萍乡市金辉环保有限责任公司 | Production method of silicon carbide-silicon oxide ceramic membrane filter tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900663A (en) * | 2012-09-27 | 2013-01-30 | 四川久信科技集团有限公司 | Cylinder sleeve and manufacturing method thereof |
| CN102900663B (en) * | 2012-09-27 | 2015-08-19 | 四川中物泰沃新材料有限公司 | Cylinder sleeve and manufacture method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102320842B (en) | 2013-01-23 |
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