CN102392245A - Enamelling method of enamel heat transfer element - Google Patents
Enamelling method of enamel heat transfer element Download PDFInfo
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- CN102392245A CN102392245A CN2011103775658A CN201110377565A CN102392245A CN 102392245 A CN102392245 A CN 102392245A CN 2011103775658 A CN2011103775658 A CN 2011103775658A CN 201110377565 A CN201110377565 A CN 201110377565A CN 102392245 A CN102392245 A CN 102392245A
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- enamel
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- transfer element
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Abstract
The invention discloses an enamelling method of an enamel heat transfer element, comprising the following steps of: (1) preparing enamel frit for later use; (2) making an electrostatic enamel powder which can be sprayed by the use of an electrostatic spray gun; (3) making glaze slip which can be used for wet spraying; (4) spraying the glaze slip obtained from the step (3) on the heat transfer element's grooves and slots which are not easy to spray by an electrostatic dry method; (5) drying the heat transfer element sprayed by the step (4), sending the dried heat transfer element into an electrostatic spraying device, and spraying the electrostatic enamel powder by using the electrostatic spray gun; (6) sending the heat transfer element which has undergone the above steps into a high temperature enamelling kiln for sintering, and cooling to obtain enamel heat transfer element with anticorrosion performance. According to the workpiece sprayed by the enamelling method of the enamel heat transfer element, enamels are greatly wrapped by edges after sintering. In addition, the grooves of the heat transfer element are greatly coated with enamel. The enamelling method is suitable for various shapes and wave patterns.
Description
Technical field
The present invention relates to a kind of application of slip method, especially relate to a kind of application of slip method of enamel heat transfer element.
Background technology
The heat exchange enamel elements is mainly used in flue gas desulfurization, the denitrification apparatus of each heat power plant at present; And air preheater etc.; Because of relating to the problem of heat exchange efficiency,, can be made into plate with various wave modes so the enamel heat exchange element can not be that pure planar is tabular; And the existence of these wave modes has proposed various requirement for the selection of enamel application of slip method.
Enamel is that metal is at one or more layers unorganic glass material of its surface-coated; Make its top coat melting through high temperature; Thereby complicated physicochemical change takes place; Make metal and its top coat mortise, thus a kind of matrix material that forms, and it has physical strength and the easy processing characteristics of metallic substance and corrosion-resistant, wear-resisting, heat-resisting, the nontoxic and abundant decorative effect that the unorganic glass material is had simultaneously.
The production technique of enamel spare is generally in two steps: the application of slip and burning till; Because enamel is more corrosion-resistant, be suitable for relatively that power plant's interchanger is residing to have corrosive Working environment, but nonplanar wave mode characteristics of interchanger heat exchange element to enameling process new requirement have been proposed.
Present enameling process for heat exchange element, two kinds of domestic main uses; The one, static dust coat method, the static dust coat is exactly a principle of utilizing electrostatic adhesion, uses electrostatic gun, makes static on the treated enamel particle band, is adsorbed on the metalwork then.Use the application of slip of static dry spraying technology, can well the metalwork edge be superscribed enamel enamel, this is because the Faraday effect of electrostatic field; At workpiece protruding place and edge, have power line, but be equally because this Faraday effect than comparatively dense; Groove power line at workpiece (heat exchange element) can be more sparse; Form Faraday's cage, thereby make vitreous enamel be difficult to application of slip enameling glaze, thereby cause the defective here at groove.
The 2nd, the wet-process enamelling method; Be exactly that enamel utilizes water as medium; Enamel is suspended in water, make it to form a kind of material of pulpous state, the glaze slip of meaning; This glaze slip has certain degree of mobilization and stops degree, uses the method for dipping (immerse in glaze slip mention again workpiece) or spraying (use pressurized air with the glaze slip atomizing spraying at workpiece surface) to make it attached to workpiece (heat transfer element) surface then.
Summary of the invention
Technical problem to be solved by this invention provides a kind of vitreous enamel that makes things convenient at groove application of slip enameling glaze, the application of slip method of a kind of enamel heat transfer element that workpiece limit portion parcel is good.
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme.
The application of slip method of this enamel heat transfer element may further comprise the steps:
(1) corrosion resistant enamel heat transfer element enamel is pulverized the even back heat thawing under 1100 ℃～1300 ℃ high temperature that is mixed, drop into cold quenching in the cold water then, drop goes out moisture and dries to such an extent that enamel frit is subsequent use again;
(2) silicone oil that one deck high resistivity is wrapped up in the levigate back of frit for porcelain enamel that step (1) is obtained is made the static parcel and is handled, and processes the electrostatic enamel powder that can use the electrostatic gun spraying;
(3) it is that 3%～8% mill additions such as clay grind that the frit for porcelain enamel that step (1) is obtained adds water and composition proportion, is made into the glaze slip that can be used for wet spray;
The place that static dry sprayings such as the groove of the glaze slip spraying heat transfer element that (4) step (3) is obtained, groove are difficult for being sprayed onto;
(5) will pass through the heat transfer element that step (4) sprayed and under 80 ℃～250 ℃ temperature, dry, and the heat transfer element of oven dry will be sent in the electrostatic spraying device, the electrostatic enamel powder that uses electrostatic gun spraying step (2) to obtain;
The heat transfer element that (6) will pass through above step is sent into the high-temperature tubring stove, uses 780 ℃～870 ℃ temperature to burn till, and cools off then, obtains having the enamel heat transfer element of Corrosion Protection.
Further, the composition and the weight percent of enamel is in the said step (1): SiO
230%～60%, Al2O3 2%～10%, B2O3 5%～20%, Fe2O3 1%～6%, Na2O 5%～15%, CoO 0.5%～5%, CuO2 0.5%～5%, TiO2 2%～8%, MnO2 0.5%～5%, LiO 0～3%.
Again further, said step (3) is: with the SiO in the step (1)
2Content reduces 5 to 10 percentage points, then the enamel frit that obtains is added the silica sand of water and 5% and 3%～8% mill additions such as clay grinding, is made into the glaze slip that can be used for wet spray.
Compared with prior art; Usefulness of the present invention is: the workpiece that the application of slip method of this enamel heat transfer element sprays out after burning till not only limit portion well wrapped up enamel enamel; And the groove part of its heat transfer element also gone up enamel well, and the different shape wave mode is all relatively adapted to.
Embodiment:
Describe the present invention through embodiment below:
Embodiment 1
(1) takes by weighing industrial chemicals by following two kinds of mix proportion schemes, be used to make corrosion resistant enamel heat transfer element enamel, SiO
230%～60%, Al2O3 2%～10%, B2O3 5%～20%, Fe2O3 1%～6%, Na2O 5%～15%, CoO 0.5%～5%, CuO2 0.5%～5%, TiO2 2%～8%, MnO2 0.5%～5%, LiO 0～3%; Then enamel is pulverized the even back fusing under 1100 ℃～1300 ℃ high temperature that is mixed, cold quenching in the input cold water of the good back of fusing, drop goes out moisture and dries to such an extent that enamel frit is subsequent use again.
(2) the similar non-conductive materials such as silicone oil that one deck high resistivity is wrapped up in the levigate back of frit for porcelain enamel that step (1) is obtained are made the static parcel and are handled, and process the electrostatic enamel powder that can use the electrostatic gun spraying;
(3) it is that 3%～8% mill additions such as clay grind that the frit for porcelain enamel that step (1) is obtained adds water and composition proportion, is made into the glaze slip that can be used for wet spray;
The place that static dry sprayings such as the groove of the glaze slip spraying heat transfer element that (4) step (3) is obtained, groove are difficult for being sprayed onto;
(5) will pass through the heat transfer element that step (4) sprayed and under 80 ℃～250 ℃ temperature, dry, and the heat transfer element of oven dry will be sent in the electrostatic spraying device, the electrostatic enamel powder that uses electrostatic gun spraying step (2) to obtain;
The heat transfer element that (6) will pass through above step is sent into the high-temperature tubring stove, uses 780 ℃～870 ℃ temperature to burn till, and cools off then, obtains having the enamel heat transfer element of Corrosion Protection.
Embodiment 2
(1) takes by weighing industrial chemicals by following two kinds of mix proportion schemes, be used to make corrosion resistant enamel heat transfer element enamel, SiO
230%～60%, Al2O3 2%～10%, B2O3 5%～20%, Fe2O3 1%～6%, Na2O 5%～15%, CoO 0.5%～5%, CuO2 0.5%～5%, TiO2 2%～8%, MnO2 0.5%～5%, LiO 0～3%; Then enamel is pulverized the even back fusing under 1100 ℃～1300 ℃ high temperature that is mixed, cold quenching in the input cold water of the good back of fusing, drop goes out moisture and dries to such an extent that enamel frit is subsequent use again.
(2) silicone oil that one deck high resistivity is wrapped up in the levigate back of frit for porcelain enamel that step (1) is obtained is made the static parcel and is handled, and processes the electrostatic enamel powder that can use the electrostatic gun spraying;
(3) with the SiO in the step (1)
2Content reduces 5 to 10 percentage points, then the enamel frit that obtains is added the silica sand of water and 5% and 3%～8% mill additions such as clay grinding, is made into the glaze slip that can be used for wet spray.
The place that static dry sprayings such as the groove of the glaze slip spraying heat transfer element that (4) step (3) is obtained, groove are difficult for being sprayed onto;
(5) will pass through the heat transfer element that step (4) sprayed and under 80 ℃～250 ℃ temperature, dry, and the heat transfer element of oven dry will be sent in the electrostatic spraying device, the electrostatic enamel powder that uses electrostatic gun spraying step (2) to obtain;
The heat transfer element that (6) will pass through above step is sent into the high-temperature tubring stove, uses 780 ℃～870 ℃ temperature to burn till, and cools off then, obtains having the enamel heat transfer element of Corrosion Protection.
It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. the application of slip method of an enamel heat transfer element is characterized in that, may further comprise the steps:
(1) corrosion resistant enamel heat transfer element enamel is pulverized the even back heat thawing under 1100 ℃～1300 ℃ high temperature that is mixed, drop into cold quenching in the cold water then, drop goes out moisture and dries to such an extent that enamel frit is subsequent use again;
(2) silicone oil that one deck high resistivity is wrapped up in the levigate back of frit for porcelain enamel that step (1) is obtained is made the static parcel and is handled, and processes the electrostatic enamel powder that can use the electrostatic gun spraying;
(3) it is that 3%～8% mill additions such as clay grind that the frit for porcelain enamel that step (1) is obtained adds water and composition proportion, is made into the glaze slip that can be used for wet spray;
The place that static dry sprayings such as the groove of the glaze slip spraying heat transfer element that (4) step (3) is obtained, groove are difficult for being sprayed onto;
(5) will pass through the heat transfer element that step (4) sprayed and under 80 ℃～250 ℃ temperature, dry, and the heat transfer element of oven dry will be sent in the electrostatic spraying device, the electrostatic enamel powder that uses electrostatic gun spraying step (2) to obtain;
The heat transfer element that (6) will pass through above step is sent into the high-temperature tubring stove, uses 780 ℃～870 ℃ temperature to burn till, and cools off then, obtains having the enamel heat transfer element of Corrosion Protection.
2. the application of slip method of enamel heat transfer element according to claim 1 is characterized in that, the composition and the weight percent of enamel are in the said step (1): SiO
230%～60%, Al2O3 2%～10%, B2O3 5%～20%, Fe2O3 1%～6%, Na2O 5%～15%, CoO 0.5%～5%, CuO2 0.5%～5%, TiO2 2%～8%, MnO2 0.5%～5%, LiO 0～3%.
3. the application of slip method of enamel heat transfer element according to claim 1 is characterized in that, said step (3) is: with the SiO in the step (1)
2Content reduces 5 to 10 percentage points, then the enamel frit that obtains is added the silica sand of water and 5% and 3%～8% mill additions such as clay grinding, is made into the glaze slip that can be used for wet spray.
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| CN2011103775658A CN102392245A (en) | 2011-11-24 | 2011-11-24 | Enamelling method of enamel heat transfer element |
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| CN2011103775658A CN102392245A (en) | 2011-11-24 | 2011-11-24 | Enamelling method of enamel heat transfer element |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194754A (en) * | 2013-04-27 | 2013-07-10 | 河南金丹搪瓷有限公司 | Double-spray one-sintering low-temperature sintering spraying technology |
| CN103693850A (en) * | 2013-12-09 | 2014-04-02 | 常熟市永达化工设备厂 | Preparation technology of nanocrystalline enamel |
| CN103993316A (en) * | 2014-04-25 | 2014-08-20 | 昆山美邦搪瓷有限公司 | Enamel heat transfer element and enameling method thereof |
| CN105130192A (en) * | 2015-09-01 | 2015-12-09 | 邯郸市龙翔化工材料有限公司 | Electrostatic wrapping liquid of vitreous enamel frit and electrostatic vitreous enamel powder and preparation method thereof |
| CN105506627A (en) * | 2016-01-05 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Enamel component and preparing method thereof |
| CN105525291A (en) * | 2016-01-05 | 2016-04-27 | 广东美的厨房电器制造有限公司 | Enamel inner container as well as enamel spraying method and equipment of enamel inner container |
| CN105951098A (en) * | 2016-04-28 | 2016-09-21 | 浙江开尔新材料股份有限公司 | Preparation method of enamel plate for flue of thermal power plant |
| CN106746662A (en) * | 2017-02-05 | 2017-05-31 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN107121006A (en) * | 2017-06-06 | 2017-09-01 | 昆山美邦环境科技股份有限公司 | Dual anti-corrosion weathering steel enamel heat transfer element and preparation method thereof |
| CN108203244A (en) * | 2016-12-17 | 2018-06-26 | 江西科盛环保股份有限公司 | It is a kind of for common cold rolling, the quick-fried electrostatic dry powder of the anti-squama of hot rolled plate counterenamel preparation method |
| CN111393026A (en) * | 2020-02-25 | 2020-07-10 | 广东沃尔姆斯电器有限公司 | Preparation method of enamel product with antibacterial property and enamel product with antibacterial property |
| CN113024116A (en) * | 2021-05-25 | 2021-06-25 | 佛山市三水区康立泰无机合成材料有限公司 | Matte glaze powder suitable for electrostatic spraying and preparation method thereof |
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| CN102181863A (en) * | 2011-04-20 | 2011-09-14 | 合肥翰林搪瓷有限公司 | Method for manufacturing enamel heat exchanger by combing dry method with wet method |
| CN102181862A (en) * | 2011-04-12 | 2011-09-14 | 浙江开尔新材料股份有限公司 | Preparation method of enameled steel sheet |
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Patent Citations (2)
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| CN102181862A (en) * | 2011-04-12 | 2011-09-14 | 浙江开尔新材料股份有限公司 | Preparation method of enameled steel sheet |
| CN102181863A (en) * | 2011-04-20 | 2011-09-14 | 合肥翰林搪瓷有限公司 | Method for manufacturing enamel heat exchanger by combing dry method with wet method |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194754A (en) * | 2013-04-27 | 2013-07-10 | 河南金丹搪瓷有限公司 | Double-spray one-sintering low-temperature sintering spraying technology |
| CN103693850A (en) * | 2013-12-09 | 2014-04-02 | 常熟市永达化工设备厂 | Preparation technology of nanocrystalline enamel |
| CN103693850B (en) * | 2013-12-09 | 2015-12-30 | 常熟市永达化工设备厂 | The technology of preparing of nano microcrystalline enamel |
| CN103993316B (en) * | 2014-04-25 | 2017-02-15 | 昆山美邦环境科技股份有限公司 | Enamel heat transfer element and enameling method thereof |
| CN103993316A (en) * | 2014-04-25 | 2014-08-20 | 昆山美邦搪瓷有限公司 | Enamel heat transfer element and enameling method thereof |
| CN105130192A (en) * | 2015-09-01 | 2015-12-09 | 邯郸市龙翔化工材料有限公司 | Electrostatic wrapping liquid of vitreous enamel frit and electrostatic vitreous enamel powder and preparation method thereof |
| CN105130192B (en) * | 2015-09-01 | 2017-12-26 | 邯郸市龙翔化工材料有限公司 | The electrostatic of enamel vitreous enamel frit wraps up liquid, electrostatic enamel powder and preparation method thereof |
| WO2017117888A1 (en) * | 2016-01-05 | 2017-07-13 | 广东美的厨房电器制造有限公司 | Enameled inner container, and enamel spraying method and enamel spraying equipment therefor |
| CN105525291B (en) * | 2016-01-05 | 2019-05-03 | 广东美的厨房电器制造有限公司 | It enamel inner container and its sprays and method and sprays equipment |
| CN105525291A (en) * | 2016-01-05 | 2016-04-27 | 广东美的厨房电器制造有限公司 | Enamel inner container as well as enamel spraying method and equipment of enamel inner container |
| CN105506627A (en) * | 2016-01-05 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Enamel component and preparing method thereof |
| CN105506627B (en) * | 2016-01-05 | 2019-04-02 | 广东美的厨房电器制造有限公司 | Enamel component and preparation method thereof |
| CN105951098A (en) * | 2016-04-28 | 2016-09-21 | 浙江开尔新材料股份有限公司 | Preparation method of enamel plate for flue of thermal power plant |
| CN105951098B (en) * | 2016-04-28 | 2018-07-27 | 浙江开尔新材料股份有限公司 | A kind of preparation method of thermal power plant flue enamel plate |
| CN108203244B (en) * | 2016-12-17 | 2022-02-08 | 江西科盛环保股份有限公司 | Preparation method of double-sided enamel anti-scaling static dry powder for common cold-rolled and hot-rolled plates |
| CN108203244A (en) * | 2016-12-17 | 2018-06-26 | 江西科盛环保股份有限公司 | It is a kind of for common cold rolling, the quick-fried electrostatic dry powder of the anti-squama of hot rolled plate counterenamel preparation method |
| CN106746662B (en) * | 2017-02-05 | 2019-05-14 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN106746662A (en) * | 2017-02-05 | 2017-05-31 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN107121006A (en) * | 2017-06-06 | 2017-09-01 | 昆山美邦环境科技股份有限公司 | Dual anti-corrosion weathering steel enamel heat transfer element and preparation method thereof |
| CN111393026A (en) * | 2020-02-25 | 2020-07-10 | 广东沃尔姆斯电器有限公司 | Preparation method of enamel product with antibacterial property and enamel product with antibacterial property |
| CN113024116A (en) * | 2021-05-25 | 2021-06-25 | 佛山市三水区康立泰无机合成材料有限公司 | Matte glaze powder suitable for electrostatic spraying and preparation method thereof |
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Application publication date: 20120328 |