CN102627477A - Regeneration process for high-voltage electric porcelain - Google Patents
Regeneration process for high-voltage electric porcelain Download PDFInfo
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- CN102627477A CN102627477A CN2012101142481A CN201210114248A CN102627477A CN 102627477 A CN102627477 A CN 102627477A CN 2012101142481 A CN2012101142481 A CN 2012101142481A CN 201210114248 A CN201210114248 A CN 201210114248A CN 102627477 A CN102627477 A CN 102627477A
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Abstract
The invention relates to a regeneration process for high-voltage electric porcelain. The main process flow of the process comprises the following steps of: matching color; preparing glaze; spray coating; glazing; and firing. The color matching process requires that the color of the appearance of an inorganic glaze material is consistent with the color of a regenerative product and is compatible with the expansion coefficient of the regenerative product. In a glazing process, the viscosity, the surface tension and the wetting angle of glaze are controlled. In the glazing process, a defect part of a defective electric porcelain product is finely ground and polished, then a thin regenerative glaze layer is sprayed, and the thickness of the glaze layer is controlled. In the firing process, the firing temperature of the product is controlled at 700-1,000 DEG C; and fired low-temperature quartz frit, kaolin, a color agent pigment with color similar to that of the product and an opacifier are added into the glaze. According to the regeneration process, a part of wasted products are regenerated, the energy is saved, secondary garbage is reduced, the waste is changed into things of value, the porcelain clay resource is greatly saved, the labor value is effectively increased, and the environment is protected.
Description
Technical field
The present invention relates to a kind of high tension insulator reclaiming process.
Technical background
According to the available data statistical study, China's electric porcelain production output value was about 30,000,000,000 yuan in 2011, and under existing manufacturing condition, the porcelain inspection qualification rate in the electric porcelain production process exports ash glaze product 70%～80% about 80%～85%.Its major defect is cracking, pin hole, iron spot, bumps porcelain, lacks glaze, knockout.Wherein be out of shape, cracking etc. accounts for about 5%～8% altogether, and surface imperfection comprehensively accounts for 6%～10%.This macroscopic irregularity loss whole nation has about 1,500,000,000 yuan approximately.To these defectives, the way in past is to adopt organic materials to repair.
Along with domestic and international electrotechnical porcelain product to outward appearance require increasingly high; American-European market and Central Asia high-end customer have banned use of organic materials to repair this method at present; This road is again unworkable; If do not take new production technique to remedy,, will cause tremendous economic loss and environmental pollution to society only because of the macroscopic irregularity scrap products.
Electric porcelain production is a kind of labour concentrated industry, and its production technology level and condition are difficult to reach the appearance requirement of zero-fault, according to this situation; Take inorganic materials that electroceramics is produced again, electrotechnical porcelain product is not scrapped because of appearance defect, and then effectively regenerated using; We can say that the electroceramics regeneration techniques has the large market, if this technology popularization is to national electroceramics industry; Its economic benefit will be practiced thrift 300,000 tons of porcelain mud resources near 1,500,000,000 yuan every year, practice thrift about 200,000 tons in mark coal.
Summary of the invention
The object of the invention just provides a kind of inorganic materials of utilizing, and to the working method that the electrotechnical porcelain product that surface imperfection is arranged is reprocessed, it not only makes the written-off product of part be reborn; Practiced thrift the energy; Reduce the generation of secondary rubbish, turned waste into wealth, and practiced thrift porcelain mud resource widely; Improve labour value effectively, protected environment.
Technical scheme of the present invention realizes through following approach: its main technique flow process is color matching, enamel frit makeing, spraying, glazing, burns till.Wherein:
Color blending technique requires to mix the inorganic glaze of respective color, and the appearance color of this inorganic glaze must be in full accord with the color of renewable product, and compatible mutually with its coefficient of expansion.
In the glaze preparation method, the viscosity number of glaze is controlled at 180～220 pascal seconds, and surface tension is 0.25～0.35N/m, and wetting angle is greater than 90 °.
In the glazing technology, the fault location of defective electrotechnical porcelain product is carried out meticulous sanding and polishing, and then spray the very thin raw glaze again of one deck, the glaze layer thickness is controlled between 0.15～0.25mm.
In the firing process, the product firing temperature is controlled at 700 ℃～1000 ℃, and in glaze, adds 70%～85% low quartz frit that baked, 8%～20% kaolin, 2%～8% toner pigment and the opacifying agent close with product colour.
Heating curve: before 200 ℃, heat-up rate is not more than 30 ℃/h, and 500 ℃～600 ℃, heat-up rate is not more than 20 ℃/h, the vitreous of 700 ℃～glaze, and 40 ℃/h of heat-up rate is incubated 1 hour.
Temperature lowering curve: cease fire～600 ℃ be fast cooling, cooling rate is greater than 60 ℃/h, 600 ℃～room temperature adds 15 ℃ and is slowly cooling, cooling rate is less than 30 ℃/h.
The present invention not only makes the written-off product of part be reborn, and has practiced thrift the energy, has reduced the generation of secondary rubbish, turns waste into wealth, and has practiced thrift porcelain mud resource widely, has improved labour value effectively, has protected environment.
Embodiment
Embodiment of the present invention.
Technical scheme of the present invention realizes that through following approach its main technique flow process contains color matching, enamel frit makeing, glazing, burns till.Wherein:
Color blending technique is the inorganic glaze that mixes respective color, and the appearance color of this inorganic glaze requires with reproducible product color in full accord, and compatible mutually with its coefficient of expansion.
In the glaze preparation method, the viscosity number of glaze is controlled at 180～220 pascal seconds, and surface tension is 0.25～0.35N/m, and wetting angle is greater than 90 °.
In the glazing technology, to the electrotechnical porcelain product sanding and polishing of appearance defect is arranged, and then spray one deck raw glaze again, the glaze layer thickness is controlled between 0.15～0.25mm.
In the firing process; The product firing temperature is controlled at 700 ℃～1000 ℃, and in glaze, adds 70%～85% low quartz frit that baked, 8%～20% kaolin; 2%～8% toner pigment and the opacifying agent close with product colour, the opacifying agent that the present invention adopts is zirconium silicate.
20) ℃ heating curve: before, heat-up rate is not more than 30 ℃/h; 500 ℃～600 ℃, heat-up rate is not more than 20 ℃/h; 700 ℃～1000 ℃ glaze vitreous.
40 ℃/h of heat-up rate is incubated 2 hours; Temperature lowering curve: cease fire～600 ℃ be fast cooling, cooling rate is greater than 60 ℃/h; 600 ℃～room temperature adds 15 ℃ and is slowly cooling, and cooling rate is less than 30 ℃/h.
Low quartz frit main chemical compositions and weight percent are following:
SiO
2：43％～48％、Al
2O
3：5％～7％、MgO：2.0％～2.4％、K
2O：6.5％～8.5％、Na
2O：4.5％～6.3％、CaO：9％～12％
Kaolin main chemical compositions and weight percent are following:
SiO
2: Al 53%～59%,
2O
3: Fe 23%～28%,
2O
3: K≤2.2%,
2O+Na
2O: I.L. (igloss)>=2.5% :≤15%
Concrete operational process of craft is following:
At first the regeneration electrotechnical porcelain product appearance is classified, analysis to measure is made repair coverage, and to the sample glaze colours, according to the glaze base, adjusts different pigment and prepare.Adopt high-speed grinder grinding and retort furnace to fire, color makes every effort to reach consistent with renewable product glaze colours.
Lacking the excessive need of glaze area adopts miniature bistrique to polish a glaze transition layer to the glaze gap edge.
Renewable article are advanced the drying room heating, be heated to 40 ℃～50 ℃, be incubated 2 hours.
The raw glaze again that will modulate with micro-spray gun again is sprayed on the regenerate surface, glaze spraying thickness between 0.15～0.25mm, the progressively transition of the old and new's glaze, the glaze layer thickness is attenuate progressively, accomplishes not sagging, massed glaze, smooth evenly.Directly advance kiln after the drying.
By product category loading of kiln respectively, need kiln furnitures during loading of kiln, product blows ash, dust removal.Keep glaze clean.
Burnt till 12～18 hours by heating curve, be incubated and press temperature lowering curve cooling 18～24 hours after 0.5～1.5 hour.
Behind the kiln discharge surface polished and check and dispatch from the factory.
Claims (4)
1. high tension insulator reclaiming process, its main technique flow process contains color matching, enamel frit makeing, glazing, burns till, and it is characterized in that described:
A) color blending technique is an inorganic glaze of allotting respective color, and it is in full accord with reproducible product color that the appearance color of this inorganic glaze is made every effort to, and compatible mutually with its coefficient of expansion;
B) in the glaze preparation method, the viscosity number of glaze is controlled at 180～220 pascal seconds, and surface tension is 0.25～0.35N/m, and wetting angle is greater than 90 °;
C) in the glazing technology, renewable electrotechnical porcelain product is carried out meticulous sanding and polishing, and then spray one deck raw glaze again, the glaze layer thickness is controlled between 0.15～0.25mm;
D) in the firing process, the product firing temperature is controlled at 700 ℃～1000 ℃, and in glaze, adds 70%～85% low quartz frit that baked, 8%～20% kaolin, 2%～8% toner pigment and the opacifying agent close with product colour;
Heating curve: before 200 ℃, heat-up rate is not more than 30 ℃/h; 500 ℃～600 ℃, heat-up rate is not more than 20 ℃/h; 700 ℃～1000 ℃ glaze vitreous, 40 ℃/h of heat-up rate is incubated 1.5～2.5 hours;
Temperature lowering curve: cease fire～600 ℃ be fast cooling, cooling rate is greater than 60 ℃/h, 600 ℃～room temperature adds 15 ℃ and is slowly cooling, cooling rate is less than 30 ℃/h.
2. a kind of high tension insulator reclaiming process according to claim 1 is characterized in that described low quartz frit main chemical compositions and weight percent are: SiO
2: Al 43%～48%,
2O
3: 5%～7%, MgO:2.0%～2.4%, K
2O:6.5%～8.5%, Na
2O:4.5%～6.3%, CaO:9%～12%.
3. a kind of high tension insulator reclaiming process according to claim 1 is characterized in that described kaolin main chemical compositions and weight percent are: SiO
2: Al 53%～59%,
2O
3: Fe 23%～28%,
2O
3: K≤2.2%,
2O+Na
2O: igloss>=2.5% :≤15%.
4. a kind of high tension insulator reclaiming process according to claim 1 is characterized in that described opacifying agent is zirconium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101142481A CN102627477A (en) | 2012-04-18 | 2012-04-18 | Regeneration process for high-voltage electric porcelain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101142481A CN102627477A (en) | 2012-04-18 | 2012-04-18 | Regeneration process for high-voltage electric porcelain |
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|---|---|
| CN102627477A true CN102627477A (en) | 2012-08-08 |
Family
ID=46585906
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101142481A Pending CN102627477A (en) | 2012-04-18 | 2012-04-18 | Regeneration process for high-voltage electric porcelain |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922811A (en) * | 2014-04-15 | 2014-07-16 | 醴陵市阳东电瓷电器有限公司 | Repair method of electroceramic ceramic pieces |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884212A (en) * | 2006-07-12 | 2006-12-27 | 上海师范大学 | High-temperature reparation glaze composition and process for preparing same and application thereof |
-
2012
- 2012-04-18 CN CN2012101142481A patent/CN102627477A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884212A (en) * | 2006-07-12 | 2006-12-27 | 上海师范大学 | High-temperature reparation glaze composition and process for preparing same and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 素木洋一: "《釉及色料》", 31 December 1979, 中国建筑工业出版社 * |
| 阚欣荣等: "电瓷产品釉面缺陷的补救措施", 《陶瓷》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922811A (en) * | 2014-04-15 | 2014-07-16 | 醴陵市阳东电瓷电器有限公司 | Repair method of electroceramic ceramic pieces |
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Application publication date: 20120808 |