CN103482871B - 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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- CN103482871B CN103482871B CN201310350259.4A CN201310350259A CN103482871B CN 103482871 B CN103482871 B CN 103482871B CN 201310350259 A CN201310350259 A CN 201310350259A CN 103482871 B CN103482871 B CN 103482871B
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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 reducing the high-temperature tubring coating of sintering temperature.
Background technology
The combustion chamber of industrial gas turbine turibine rotor, combustion chamber, jet pipe and industrial tail gas burner works under high-temperature and high-pressure conditions, and its working temperature is more than 500 DEG C, and local can more than 1000 DEG C.The material of turibine rotor, combustion chamber, jet pipe is generally stainless steel, high temperature steel or superalloy, is all austenitic metal materials.Reliability and the work-ing life of the work of heat insulating coat technology guarantee must be adopted under so harsh working condition.
Prior art generally adopts the special enamel glass coating or ceramic coating that are made up of metal oxides such as silicon-dioxide, barium oxide, calcium oxide as the heat insulating coat of working temperature lower than 1000 DEG C.The solid solubility temperature of the austenite material such as stainless steel, refractory alloy is at 1150 DEG C, but the sintering temperature of this type of enamel glass coating is all at 1220 ~ 1240 DEG C.The austenitic metal such as stainless steel, refractory alloy material is under 1220 ~ 1240 DEG C of conditions, and higher than solution heat treatment temperature, its metallographic structure can change, the serious high-temperature mechanical property reducing metallic substance.Austenitic metal material also has the high feature of linear expansivity, and the temperature variation of the large temperature difference can make enamel glass coating produce local shedding, affects the bonding strength of coating and matrix.
In sum, a kind of have heat and corrosion resisting can good, with substrate combinating strength high-temperature tubring coating technology that is high, that can carry out sintering below austenitic metal material solution heat treatment temperature have to be developed.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, a kind of preparation method reducing the high-temperature tubring coating of sintering temperature is provided, realize sintering in the solution heat treatment temperature less than 1150 DEG C of austenitic metal material, 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 material at high temperature mechanical property reduces.
Technical scheme provided by the invention is:
(1) first fusion cast glass frit, chemical feedstocks and the part by weight of glass frit 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; Wherein the chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3< 0.05%; All the other raw materials such as boron oxide are chemical pure; All chemical feedstockss of glass frit are inserted crucible found under air, glass melting temperature controls at 1550 ~ 1650 DEG C, pours out crucible and cools fast in water, make glass frit after melting evenly;
(2) glass frit founded is carried out pulverizing grinding, grind into the powder of 0.1 ~ 5.0 μm, gravitational segregation goes out the 3rd group of second group, 1.0 ~ 5.0 μm of 0.1 ~ 0.3 μm first group, 0.3 ~ 1.0 μm respectively again, again by the glass frit powder of three kinds of particle sizes by following part by weight Homogeneous phase mixing: 0.1 ~ 0.3 μm first group 20 ~ 30,0.3 ~ 1.0 μm second group 50 ~ 70,1.0 ~ 5.0 μm the 3rd group 10 ~ 20;
(3) in glass frit process of lapping, add the grinding of chromium sesquioxide, cobalt oxide and water blending dispersion, 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 DEG C.
compared with prior art, beneficial effect of the present invention: coating sintering temperature is 1050 DEG C, and sintering temperature reduces 170 DEG C, achieves and sinters in the solution heat treatment temperature less than 1150 DEG C of austenitic metal material.Avoid because the metal grain that sintering temperature causes higher than the solution heat treatment temperature of austenitic metal material is grown up, solve the technical barrier that the mechanical property of materials reduces.Coating can bear 1000 DEG C of heating, then water-cooled 5 times thermal shock test and without collapsing porcelain obscission.
Embodiment
Embodiment 1:
1, glass frit is prepared, 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 crucible to found with 1700 DEG C of cabinet-type electric furnaces under air, glass melting temperature controls at 1600 DEG C ~ 1650 DEG C, pours out crucible and cools fast in water, make glass frit after melting evenly.
3, glass frit is carried out mechanical disintegration, spherical tank shredder is adopted to be ground by the glass frit founded again, grind into the powder of 0.1 ~ 5.0 μm, then gravitational segregation goes out the glass frit powder of 0.1 ~ 0.3 μm (first group), 0.3 ~ 1.0 μm (second group), 1.0 ~ 5.0 μm of (the 3rd group) three kinds of particle sizes respectively.Again by the glass frit powder of three kinds of particle sizes in following ratio (ratio of weight and number) Homogeneous phase mixing.
0.1 ~ 0.3 μm (first group) 30,0.3 ~ 1.0 μm (second group) 50,1.0 ~ 5 .0 μm (the 3rd groups) 20.
4, in glass frit process of lapping, chromium sesquioxide (Cr is added
2o
3), cobalt oxide (CoO) and water blending dispersion grinding, 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 DEG C, and can bear 1000 DEG C of heating, then water-cooled 5 times thermal shock test and without collapsing porcelain obscission.
Embodiment 2:
1, glass frit is prepared, 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 crucible to found with 1700 DEG C of vertical electric furnaces under air, glass melting temperature controls at 1600 DEG C ~ 1650 DEG C, pours out crucible and cools fast in water, make glass frit after melting evenly.
3, glass frit is carried out mechanical disintegration, spherical tank shredder is adopted to be ground by the glass frit founded again, grind into the powder of 0.1 ~ 5.0 μm, then gravitational segregation goes out the glass frit powder of 0.1 ~ 0.3 μm (first group), 0.3 ~ 1.0 μm (second group), 1.0 ~ 5 .0 μm (the 3rd group) three kinds of particle sizes respectively.Again by the glass frit powder of three kinds of particle sizes in following ratio (ratio of weight and number) Homogeneous phase mixing.
0.1 ~ 0.3 μm (first group) 20,0.3 ~ 1.0 μm (second group) 60,1.0 ~ 5.0 μm (the 3rd group) 20.
4, in glass frit process of lapping, chromium sesquioxide (Cr is added
2o
3), cobalt oxide (CoO) and water blending dispersion grinding, 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 DEG C, and can bear 1000 DEG C of heating, then water-cooled 5 times thermal shock test and without collapsing porcelain obscission.
Embodiment 3:
1, glass frit is prepared, 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 crucible to found with 1700 DEG C of cabinet-type electric furnaces under air, glass melting temperature controls at 1600 DEG C ~ 1650 DEG C, pours out crucible and cools fast in water, make glass frit after melting evenly.
3, glass frit is carried out mechanical disintegration, spherical tank shredder is adopted to be ground by the glass frit founded again, grind into the powder of 0.1 ~ 5.0 μm, then gravitational segregation goes out the glass frit powder of 0.1 ~ 0.3 μm (first group), 0.3 ~ 1.0 μm (second group), 1.0 ~ 5 .0 μm (the 3rd group) three kinds of particle sizes respectively.Again by the glass frit powder of three kinds of particle sizes in following ratio (ratio of weight and number) Homogeneous phase mixing.
0.1 ~ 0.3 μm (first group) 20,0.3 ~ 1.0 μm (second group) 70,1.0 ~ 5 .0 μm (the 3rd groups) 10.
4, in glass frit process of lapping, chromium sesquioxide (Cr is added
2o
3), cobalt oxide (CoO) and water blending dispersion grinding, 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 DEG C and finally makes the high-temperature tubring coating water slurry that can reduce sintering temperature, its sintering temperature is 1050 DEG C, and 1000 DEG C of heating can be born, then water-cooled 5 times thermal shock test and without collapsing porcelain obscission.
Claims (1)
1. reduce a preparation method for the enamel paint of sintering temperature, it is characterized in that:
(1) first fusion cast glass frit, chemical feedstocks and the part by weight of glass frit 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; Wherein the chemical composition of quartz sand requires SiO
2>=99%, Fe
2o
3< 0.05%; All the other raw materials such as boron oxide are chemical pure; All chemical feedstockss of glass frit are inserted crucible found under air, glass melting temperature controls at 1550 ~ 1650 DEG C, pours out crucible and cools fast in water, make glass frit after melting evenly;
(2) glass frit founded is carried out pulverizing grinding, grind into the powder of 0.1 ~ 5.0 μm, gravitational segregation goes out the 3rd group of second group, 1.0 ~ 5.0 μm of 0.1 ~ 0.3 μm first group, 0.3 ~ 1.0 μm respectively again, again by the glass frit powder of three kinds of particle sizes by following part by weight Homogeneous phase mixing: 0.1 ~ 0.3 μm first group 20 ~ 30,0.3 ~ 1.0 μm second group 50 ~ 70,1.0 ~ 5.0 μm the 3rd group 10 ~ 20;
(3) in glass frit process of lapping, add the grinding of chromium sesquioxide, cobalt oxide and water blending dispersion, 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 DEG C.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0584977B1 (en) * | 1992-08-04 | 1997-03-12 | Toto Ltd. | Vitreous china, method for preparing the vitreous china, and sanitary ware produced therefrom |
| 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 |
Family Cites Families (2)
| 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 |
| KR100983046B1 (en) * | 2008-12-29 | 2010-09-17 | 삼성전기주식회사 | Borosilicate glass compositions for sintering agent, dielectric compositions and multilayer ceramic capacitor using the same |
-
2013
- 2013-08-13 CN CN201310350259.4A patent/CN103482871B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0584977B1 (en) * | 1992-08-04 | 1997-03-12 | Toto Ltd. | Vitreous china, method for preparing the vitreous china, and sanitary ware produced therefrom |
| 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 |
|---|
| 绣花状黄金光泽结晶釉的研究;董伟霞等;《江苏陶瓷》;20090228;第42卷(第1期);第10-11页 * |
| 高铁析晶釉的烧制工艺及显微结构研究;张玮等;《中国陶瓷》;20100831;第46卷(第8期);第20-25页 * |
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