CN103482871A - Preparation method of sintering temperature-reducing high-temperature enamel coating - Google Patents
Preparation method of sintering temperature-reducing high-temperature enamel coating Download PDFInfo
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- CN103482871A CN103482871A CN201310350259.4A CN201310350259A CN103482871A CN 103482871 A CN103482871 A CN 103482871A CN 201310350259 A CN201310350259 A CN 201310350259A CN 103482871 A CN103482871 A CN 103482871A
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Abstract
The invention relates to a preparation method of a sintering temperature-reducing high-temperature enamel coating. The method is characterized by comprising the following steps: firstly, melting glass frits which comprise the following chemical components in parts by weight: 52-53 parts of quartz sand, 6.8-7.5 parts of boric oxide, 8.6-9.0 parts of barium oxide, 6.8-7.5 parts of calcium oxide, 1.8-2.0 parts of magnesium oxide, 19.0-20.0 parts of aluminum oxide and 3.3-3.6 parts of titanium oxide; crushing and grinding the melted glass frits to prepare glass frit powder with three particle sizes, and then uniformly mixing the glass frit powder with three particle sizes in proportion; and adding chromium sesquioxide, cobaltous oxide and water in the grinding process of the glass frits for mixing, dispersing and grinding to prepare the sintering temperature-reducing enamel coating. The sintering temperature of the coating provided by the invention is 1050 DEG C and is reduced by 170 DEG C, and the coating subjected to a thermal shock test at 1000 DEG C after water cooling for five times is free from ceramic collapse and shedding phenomenon. Sintering is carried out below solid solution heat treatment temperature (1150 DEG C) of an austenite metal material. Metal grain growth as a result of the sintering temperature which is higher than the solid solution heat treatment temperature of the austenite metal material is avoided. The technical problem that the mechanical property of the material is reduced is solved.
Description
Technical field
The present invention relates to a kind of preparation method of enamel Tu material, particularly relate to a kind of preparation method who reduces the high-temperature tubring coating of sintering temperature.
Background technology
The combustion chamber of industrial combustion gas turbine turibine rotor, combustion chamber, jet pipe and industrial tail gas burner is to work under high-temperature and high-pressure conditions, and its working temperature is more than 500 ℃, and part can be over 1000 ℃.The material of turibine rotor, combustion chamber, jet pipe is generally stainless steel, high temperature steel or superalloy, is all austenitic metal materials.Must adopt reliability and the work-ing life of the work of heat insulating coat technology guarantee under so harsh working condition.
The special enamel glass coating that the general employing of prior art is comprised of metal oxides such as silicon-dioxide, barium oxide, calcium oxide or ceramic coating be the heat insulating coat lower than 1000 ℃ as working temperature.The solid solubility temperature of the austenite material such as stainless steel, refractory alloy is at 1150 ℃, but the sintering temperature of this type of enamel glass coating is all at 1220～1240 ℃.The austenitic metal such as stainless steel, refractory alloy material is under 1220～1240 ℃ of conditions, and higher than solution heat treatment temperature, its metallographic structure meeting changes, and seriously reduces the high-temperature mechanical property of metallic substance.The austenitic metal material also has the characteristics that linear expansivity is high, and the temperature variation of the large temperature difference can make the enamel glass coating produce local shedding, affects the bonding strength of coating and matrix.
In sum, a kind of there is heat and corrosion resisting can be good, with substrate combinating strength high-temperature tubring coating technology high, that can below austenitic metal material solution heat treatment temperature, carry out sintering, have to be developed.
Summary of the invention
The objective of the invention is in order to solve the deficiencies in the prior art, a kind of preparation method who reduces the high-temperature tubring coating of sintering temperature is provided, realization is carried out sintering in the solution heat treatment temperature of austenitic metal material below 1150 ℃, avoid, because the metal grain that sintering temperature causes higher than the solution heat treatment temperature of austenitic metal material is grown up, solving the technical barrier that the material at high temperature mechanical property reduces.
Technical scheme provided by the invention is:
(1) fusion cast glass frit at first, glass frit chemical composition and part by weight are as follows:
Quartz sand 52-53, boron oxide 6.8-7.5, barium oxide 8.6-9.0, calcium oxide 6.8-7.5, magnesium oxide 1.8-2.0, aluminium sesquioxide 19.0-20.0, titanium oxide 3.3-3.6;
The chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3<0.05%, all the other compositions are chemical pure; All chemical raw materials of glass frit are inserted to crucible and found under atmosphere, glass melting temperature is controlled at 1550～1650 ℃, pours out crucible after melting evenly cooling fast in water, makes glass frit;
(2) glass frit of founding is pulverized to rear grinding, grind into the powder of 0.1～5.0 μ m, gravitational segregation goes out first group of 0.1～0.3 μ m, second group of 0.3～1.0 μ m, the 3rd group of 1.0～5 .0 μ m respectively again, again the glass frit powder of three kinds of particle sizes is evenly mixed by following part by weight: first group 20～30 of 0.1～0.3 μ m, 0.3 second group 50～70 of～1.0 μ m, the 3rd group 10～20 of 1.0～5.0 μ m;
(3) in the glass frit process of lapping, add chromium sesquioxide, cobalt oxide and water to carry out the blending dispersion grinding, its part by weight is:
Mixed uniformly glass frit powder 93～97, chromium sesquioxide 4～8, cobalt oxide 0.4～0.6, distilled water 50～70;
Finally make the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃.
Compared with prior art, beneficial effect of the present invention: the coating sintering temperature is 1050 ℃, and sintering temperature has reduced by 170 ℃, has realized carrying out sintering below 1150 ℃ in the solution heat treatment temperature of austenitic metal material.Avoided, because the metal grain that sintering temperature causes higher than the solution heat treatment temperature of austenitic metal material is grown up, having solved the technical barrier that the mechanical property of materials reduces.Coating can be born 1000 ℃ of heating, then the thermal shock test of water-cooled 5 times and without collapsing the porcelain obscission.
Embodiment
Embodiment 1:
1, prepare glass frit, its chemical composition (ratio of weight and number):
Quartz sand (SiO
2) 52.6, boron oxide (B
2o
3) 7.0, barium oxide (BaO) 8.8, calcium oxide (CaO) 7.0, magnesium oxide (MgO) 1.8, aluminium sesquioxide (Al
2o
3) 19.3, titanium oxide (TiO
2) 3.5.
2, the chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3<0.05%, all the other starting material are chemical pure.The all raw material of 10 kilograms of glass frits is inserted to crucible and found with 1700 ℃ of cabinet-type electric furnaces under atmosphere, glass melting temperature is controlled at 1600 ℃～1650 ℃, pours out crucible after melting evenly cooling fast in water, makes glass frit.
3, glass frit is carried out to mechanical disintegration, adopt again the spherical tank shredder that the glass frit of founding is ground, grind into the powder of 0.1～5.0 μ m, then gravitational segregation goes out first group of 0.1～0.3 μ m(respectively), second group of 0.3～1.0 μ m(), the 3rd group of 1.0～5.0 μ m() the glass frit powder of three kinds of particle sizes.Again the glass frit powder of three kinds of particle sizes is evenly mixed in following ratio (ratio of weight and number).
0.1～0.3 first group of μ m() 30,0.3～1.0 μ m(is second group) the 3rd group of 50,1.0～5 .0 μ m() 20.
4, add chromium sesquioxide (Cr in the glass frit process of lapping
2o
3), cobalt oxide (CoO) and water blending dispersion grind, its ratio (ratio of weight and number) is:
Mixed uniformly glass frit powder 95, chromium sesquioxide (Cr
2o
3) 5, cobalt oxide (CoO) 0.5, distilled water 60.
Finally make the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃, and can bear 1000 ℃ of heating, then the thermal shock test of water-cooled 5 times and without collapsing the porcelain obscission.
Embodiment 2:
1, prepare glass frit, its chemical composition (ratio of weight and number):
Quartz sand (SiO
2) 53, boron oxide (B
2o
3) 7.0, barium oxide (BaO) 8.8, calcium oxide (CaO) 7.0, magnesium oxide (MgO) 1.8, aluminium sesquioxide (Al
2o
3) 20.0, titanium oxide (TiO
2) 3.5.
2, the chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3<0.05%, all the other starting material are chemical pure.The all raw material of 10 kilograms of glass frits is inserted to crucible and found with 1700 ℃ of vertical electric furnaces under atmosphere, glass melting temperature is controlled at 1600 ℃～1650 ℃, pours out crucible after melting evenly cooling fast in water, makes glass frit.
3, glass frit is carried out to mechanical disintegration, adopt again the spherical tank shredder that the glass frit of founding is ground, grind into the powder of 0.1～5.0 μ m, then gravitational segregation goes out first group of 0.1～0.3 μ m(respectively), second group of 0.3～1.0 μ m(), the 3rd group of 1.0～5 .0 μ m() the glass frit powder of three kinds of particle sizes.Again the glass frit powder of three kinds of particle sizes is evenly mixed in following ratio (ratio of weight and number).
0.1～0.3 first group of μ m() 20,0.3～1.0 μ m(is second group) the 3rd group of 60,1.0～5.0 μ m() 20.
4, add chromium sesquioxide (Cr in the glass frit process of lapping
2o
3), cobalt oxide (CoO) and water blending dispersion grind, its ratio (ratio of weight and number) is:
Mixed uniformly glass frit powder 95, chromium sesquioxide (Cr
2o
3) 6, cobalt oxide (CoO) 0.5, distilled water 55.
Finally make the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃, and can bear 1000 ℃ of heating, then the thermal shock test of water-cooled 5 times and without collapsing the porcelain obscission.
Embodiment 3:
1, prepare glass frit, its chemical composition (ratio of weight and number):
Quartz sand (SiO
2) 52, boron oxide (B
2o
3) 7.0, barium oxide (BaO) 8.8, calcium oxide (CaO) 7.0, magnesium oxide (MgO) 1.8, aluminium sesquioxide (Al
2o
3) 18.0, titanium oxide (TiO
2) 3.5.
2, the chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3<0.05%, all the other starting material are chemical pure.The all raw material of 10 kilograms of glass frits is inserted to crucible and found with 1700 ℃ of cabinet-type electric furnaces under atmosphere, glass melting temperature is controlled at 1600 ℃～1650 ℃, pours out crucible after melting evenly cooling fast in water, makes glass frit.
3, glass frit is carried out to mechanical disintegration, adopt again the spherical tank shredder that the glass frit of founding is ground, grind into the powder of 0.1～5.0 μ m, then gravitational segregation goes out first group of 0.1～0.3 μ m(respectively), second group of 0.3～1.0 μ m(), the 3rd group of 1.0～5 .0 μ m() the glass frit powder of three kinds of particle sizes.Again the glass frit powder of three kinds of particle sizes is evenly mixed in following ratio (ratio of weight and number).
0.1～0.3 first group of μ m() 20,0.3～1.0 μ m(is second group) the 3rd group of 70,1.0～5 .0 μ m() 10.
4, add chromium sesquioxide (Cr in the glass frit process of lapping
2o
3), cobalt oxide (CoO) and water blending dispersion grind, its ratio (ratio of weight and number) is:
Mixed uniformly glass frit powder 95, chromium sesquioxide (Cr
2o
3) 5, cobalt oxide (CoO) 0.5, distilled water 60.
Finally make the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃ and finally makes the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃, and can bear 1000 ℃ of heating, then the thermal shock test of water-cooled 5 times and without collapsing the porcelain obscission.
Claims (1)
1. a preparation method who reduces the enamel paint of sintering temperature is characterized in that:
(1) fusion cast glass frit at first, glass frit chemical composition and part by weight are as follows:
Quartz sand 52-53, boron oxide 6.8-7.5, barium oxide 8.6-9.0, calcium oxide 6.8-7.5, magnesium oxide 1.8-2.0, aluminium sesquioxide 19.0-20.0, titanium oxide 3.3-3.6;
The chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3<0.05%, all the other compositions are chemical pure; All chemical raw materials of glass frit are inserted to crucible and found under atmosphere, glass melting temperature is controlled at 1550～1650 ℃, pours out crucible after melting evenly cooling fast in water, makes glass frit;
(2) glass frit of founding is pulverized to grinding, grind into the powder of 0.1～5.0 μ m, gravitational segregation goes out first group of 0.1～0.3 μ m, second group of 0.3～1.0 μ m, the 3rd group of 1.0～5.0 μ m respectively again, again the glass frit powder of three kinds of particle sizes is evenly mixed by following part by weight: first group 20～30 of 0.1～0.3 μ m, 0.3 second group 50～70 of～1.0 μ m, the 3rd group 10～20 of 1.0～5.0 μ m;
(3) in the glass frit process of lapping, add chromium sesquioxide, cobalt oxide and water blending dispersion to grind, its part by weight is:
Mixed uniformly glass frit powder 93～97, chromium sesquioxide 4～8, cobalt oxide 0.4～0.6, distilled water 50～70;
Finally make the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 ℃.
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| CN201310350259.4A CN103482871B (en) | 2013-08-13 | 2013-08-13 | Preparation method of sintering temperature-reducing high-temperature enamel coating |
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| CN103482871B CN103482871B (en) | 2015-06-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58176140A (en) * | 1982-04-07 | 1983-10-15 | Masao Yoshizawa | Molded article of sintered and crystallized glass and its preparation |
| EP0584977B1 (en) * | 1992-08-04 | 1997-03-12 | Toto Ltd. | Vitreous china, method for preparing the vitreous china, and sanitary ware produced therefrom |
| US20100165542A1 (en) * | 2008-12-29 | 2010-07-01 | Samsung Electro-Mechanics Co., Ltd. | Borosilicate glass compositions for sintering agent, dielectric compositions and multilayer ceramic capacitor using the same |
| CN101921063A (en) * | 2010-08-05 | 2010-12-22 | 奇瑞汽车股份有限公司 | Enamel and preparation method thereof |
| CN102134155A (en) * | 2010-09-13 | 2011-07-27 | 河北联合大学 | Method for preparing metal-based surface high-temperature resistant high-radiance coating by using ultrasonic wave |
-
2013
- 2013-08-13 CN CN201310350259.4A patent/CN103482871B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58176140A (en) * | 1982-04-07 | 1983-10-15 | Masao Yoshizawa | Molded article of sintered and crystallized glass and its preparation |
| EP0584977B1 (en) * | 1992-08-04 | 1997-03-12 | Toto Ltd. | Vitreous china, method for preparing the vitreous china, and sanitary ware produced therefrom |
| US20100165542A1 (en) * | 2008-12-29 | 2010-07-01 | Samsung Electro-Mechanics Co., Ltd. | Borosilicate glass compositions for sintering agent, dielectric compositions and multilayer ceramic capacitor using the same |
| CN101921063A (en) * | 2010-08-05 | 2010-12-22 | 奇瑞汽车股份有限公司 | Enamel and preparation method thereof |
| CN102134155A (en) * | 2010-09-13 | 2011-07-27 | 河北联合大学 | Method for preparing metal-based surface high-temperature resistant high-radiance coating by using ultrasonic wave |
Non-Patent Citations (2)
| Title |
|---|
| 张玮等: "高铁析晶釉的烧制工艺及显微结构研究", 《中国陶瓷》, vol. 46, no. 8, 31 August 2010 (2010-08-31), pages 20 - 25 * |
| 董伟霞等: "绣花状黄金光泽结晶釉的研究", 《江苏陶瓷》, vol. 42, no. 1, 28 February 2009 (2009-02-28), pages 10 - 11 * |
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| CN103482871B (en) | 2015-06-24 |
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