CN105293911A - Method for preparing low-melt glass with microwave oven through melting and low-melt glass - Google Patents
Method for preparing low-melt glass with microwave oven through melting and low-melt glass Download PDFInfo
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- CN105293911A CN105293911A CN201510676281.7A CN201510676281A CN105293911A CN 105293911 A CN105293911 A CN 105293911A CN 201510676281 A CN201510676281 A CN 201510676281A CN 105293911 A CN105293911 A CN 105293911A
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Abstract
The invention discloses a method for preparing low-melt glass with a microwave oven through melting. Low-melt glass is glass with melting temperature lower than 900 DEG C and includes vitreous glaze, sealing/welding glass and glass lubricants. The main chemical constitutions of low-melt glass are borate and borate phosphate systems. A traditional melting method adopting an oil-fired furnace or electric furnace is long in melting time and high in energy consumption. According to the method, the industrial or civil microwave oven with a wave length of 915 mHz-60 GHz and power of 0.8-50 kW is adopted to melt batch materials of low-melt glass containing the chemical constitutions, the evenly mixed batch materials are placed in a high-aluminum crucible and then placed at the focus point of the microwave oven, power cut is conducted when melting time is reached, a furnace door is opened to pour out melted glass metal, and the low-melt glass is obtained after quenching and smashing. The method for preparing low-melt glass with the microwave oven through melting has the advantages that heating speed is high, heating is uniform, heat loss is low, and operation is convenient. Compared with electric furnace melting, energy consumption can be reduced by 3-7 times.
Description
Technical field
The present invention relates to the method for founding low-melting-point glass with microwave oven, in this invention, low-melting-point glass refers to glass lubricant, and glass glaze and sealing-in (welding) glass, belong to glassmaking art.
Background technology
Low-melting-point glass refers to the glass of temperature of fusion below 900 DEG C, comprises glass glaze, sealing-in (welding) glass and glass lubricant.Be applied to the industries such as daily utensil, material of construction, photoelectron material and metal fever processing respectively.Because low-melting-point glass temperature of fusion is low, adopt common high temp glass kiln as oil oven or furnace melting method, fusing time is long, and the power consumption of unit weight glass is large, seriously polluted.
Microwave-oven-heating is the interphase interaction utilizing electromagnetic field and material, change micro-wave energy into heat energy, there is rate of heating fast, homogeneous heating, calorific loss is little, easy to operate, sanitation and hygiene are pollution-free, have been widely used in the aspect such as sterilization, drying, thermal treatment of leather, papermaking, food, chemical industry, pottery, timber, resin, pharmacy, medical treatment, health aspect.
Summary of the invention
In order to solve the problem, the feature of the property of the present invention is directed to low-melting-point glass fusing, the microwave technology of efficient energy-saving is used for founding of low-melting-point glass glaze, sealing-in (welding) glass and glass lubricant, it is fast that this method has rate of heating, fusing time is short, and calorific loss is low, uniformity of temperature profile, device are simply compact, without thermal inertia, the instantaneous cooling that can heat up, energy consumption reduces by 3 ~ 7 times.
The present invention realizes by the following technical solutions.
A preparation method for low-melting-point glass, the temperature of fusion of described low-melting-point glass, lower than 850 DEG C, adopts the microwave fusing raw material preparing low temperature glass.
Further, in technique scheme, the wavelength of described microwave is 915MHz ~ 60GHz, and this kind of high-frequency alternating magnetic field causes frit internal freedom electronics or fixed electron, as dipole, ion and electron back repolarization and strenuous exercise, collision, friction and in-fighting is produced between molecule, change micro-wave energy into heat energy, belong to the heating of material inside, homogeneous heating in system, heat-up rate is exceedingly fast, and thermo-efficiency is very high.
Further, in technique scheme, adopt industry or civilian microwave oven, microwave power is 0.8KW ~ 50KW, can carry out the power adjusting microwave oven according to the weight of admixtion.
Further, in technique scheme, the raw material preparing low-melting-point glass is mixed, be placed in high alumina earthenware Crucible, be placed in microwave oven focal spot, close fire door, by the power arranged and heat-up time, electrified regulation, reaches fusing time and just cuts off the electricity supply, and opens fire door, take out earthenware Crucible, poured out by the glass metal melted, quenching is product after pulverizing.
Further, in technique scheme, fusing time 15 ~ 60min, compares with furnace melting, and fusing time shortens 35% ~ 68%, and energy consumption reduces by 3 ~ 7 times.
Further, in technique scheme, described high alumina earthenware Crucible is corundum crucible.
Further, in technique scheme, described low-melting-point glass is glass glaze, raw materials by weight portion forms 0.25 ~ 25 part by boric acid 124.33 ~ 150.98 parts, 3.42 ~ 17.10 parts, sodium carbonate, 10 ~ 25 parts, zinc oxide, 0.73 ~ 7.34 part, salt of wormwood, 0 ~ 8.93 part, calcium carbonate, Quilonum Retard, wherein preferably 1.79 ~ 5.36 parts, calcium carbonate.
Further, in technique scheme, described low-melting-point glass is seal glass, and raw materials by weight portion is made up of SODIUM PHOSPHATE, MONOBASIC 98.88-120.85 part, boric acid 7.10 ~ 26.64 parts, 0 ~ 34.82 part, sodium carbonate, 1.47 ~ 14.67 parts, salt of wormwood, Quilonum Retard 1.24 ~ 12.40 parts, strontium oxide 0.1 ~ 3 part.
Further, in technique scheme, described low-melting-point glass is glass lubricant, raw materials by weight portion is by SODIUM PHOSPHATE, MONOBASIC 65.92 ~ 131.84 parts, boric acid 7.10 ~ 35.52 parts, 0 ~ 54.57 part, sodium carbonate, 0.2 ~ 10 part, zinc oxide, barium carbonate 0.15 ~ 7.61 part, 0 ~ 5 part, stannic oxide, bismuth oxide 0 ~ 5 part composition, wherein 1 ~ 5 part, preferential oxidation tin, bismuth oxide 1 ~ 5 part.
The invention provides the low-melting-point glass that a kind of above-mentioned preparation method obtains, not containing the large oxide compound of toxicity, as the raw material of thallium oxide, oxidation single and with serious pollution plumbous oxide, Cadmium oxide, comprise glass glaze, seal glass and glass lubricant.
Further, in technique scheme, described glass glaze, by weight by B
2o
370 ~ 85%, Na
2o2 ~ 10%, ZnO10 ~ 25%, K
2o0.5 ~ 5%, CaO0 ~ 5%; Li
2o0.1 ~ 10% forms; Wherein, preferred CaO1 ~ 3%.According to the borate system that the raw material of this one-tenth component selections is lead-free and cadmium-free, for: boric acid, sodium carbonate, zinc oxide, salt of wormwood, calcium carbonate, Quilonum Retard.
Further, in technique scheme, described sealing-in (welding) glass, as weight percents by P
2o
545 ~ 55 parts; B
2o
35 ~ 15%; Na
2o15 ~ 35%, K
2o1 ~ 10%, Li
2o0.5 ~ 5%, SrO0.1 ~ 3% form.Being phosphorus borate system according to the raw material of this one-tenth component selections is: SODIUM PHOSPHATE, MONOBASIC, boric acid, sodium carbonate, salt of wormwood, Quilonum Retard, strontium oxide.
Further, in technique scheme, described glass lubricant, as weight percents by P
2o
530 ~ 60%, B
2o
34 ~ 20%, Na
2o20 ~ 45%, ZnO0.2 ~ 10%, BaO0.1 ~ 5%, SnO0 ~ 5%, Bi
2o
30 ~ 5% composition; Wherein, preferred SnO1 ~ 5%, Bi
2o
31 ~ 5%.Being phosphorus borate system according to the raw material of this one-tenth component selections is: SODIUM PHOSPHATE, MONOBASIC, boric acid, sodium carbonate, zinc oxide, barium carbonate, stannic oxide, bismuth oxide.
Invention beneficial effect
The feature of the microwave fusing low temperature glass of the present invention is that rate of heating is fast, and homogeneous heating, calorific loss is little, easy to operate, compared with furnace melting, can reduce energy expenditure 3 ~ 7 times.
Not leaded, barium, cadmium glass glaze can be obtained with microwave fusing above-mentioned glass glaze raw material composition, softening temperature also comparatively conventional glaze is low, be only 400 DEG C ~ 450 DEG C, and the softening temperature of conventional glaze is more than 450 DEG C, linear expansivity (20 ~ 200 DEG C) is 90 ~ 105 × 10
-7/ K ， Te Do is applicable to leadless glaze and requires not containing the chemiluminescence glaze of heavy metal.
Above-mentioned glass lubricant raw material composition is melted with microwave oven; deformation point 350 ~ 400 DEG C of low-temperature greases can be made; compared with other glass lubricants, this lubricant water soluble, need not add the additive such as methylcellulose gum, glycerin fatty acid ester; lubricant solution can be obtained; surperficial at processing masterbatch with cloth and brushing, not only protect masterbatch surface, during the demoulding, remaining lubricant is removed in the flushing of use water; easy to operate, the hot bending being specially adapted to mobile phone glass cover plate is shaped
With microwave fusing above-mentioned seal glass raw material composition, its linear expansivity is up to 210 ~ 230 × 10
-7/ K and the metallic aluminium coefficient of expansion 231 × 10
-7/ K, very close, can matched seal, and the linear expansivity of general seal glass is the highest only has 150 × 10
-7/ K, does not reach the linear expansivity of this patent seal glass.
Embodiment
Following nonlimiting examples can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
The glass-glazed weight percent adopted consists of B
2o
380.6%, Na
2o7.2%, ZnO11.5%, K
2o0.5%, CaO0.1%, Li
2o0.1%.
The consumption calculating raw material according to glass-glazed composition is: boric acid 143.16g, sodium carbonate 13.34g, zinc oxide 11.5g, salt of wormwood 0.73g, calcium carbonate 0.18g, Quilonum Retard 0.25g.
Admixtion is become according to the raw material dosage calculated, precision weighing raw material, Homogeneous phase mixing.
Admixtion is placed in corundum crucible respectively, then crucible is placed in microwave oven focal spot.
Microwave oven is airtight, and power-on, arranges output rating and fusing time respectively according to the required power of fusing and fusing time.
After microwave oven reaches the fusing time of setting, powered-down, opens fire door, and crucible is taken out, then the glass metal melted in crucible is poured out quenching, is then ground into powder, is product after sieving.
Microwave wavelength 2450MHZ, output rating 0.8KW, fusing time 35min during glass glaze fusing.
During identical component identical weight glass batch employing furnace melting, output rating 2.5KW, temperature of fusion 800 DEG C, fusing time 60min.
Adopt microwave fusing glass glaze and furnace melting to contrast, microwave fusing energy consumption reduces by 5.36 times.
Microwave fusing above-mentioned raw materials is adopted to obtain glass glaze, not leaded, the heavy metal such as barium, cadmium, belong to leadless glaze, its softening temperature is 450 DEG C, the softening temperature of existing leadless glaze is more than 460 DEG C, the leadless glaze softening temperature of this patent not only reduces energy consumption lower than this temperature, and can prevent the luminescent powder added in glaze from more than 450 DEG C, decay of luminescence occurring.The glass-glazed linear expansivity 98 × 10 of this patent
-7/ K, can match with the linear expansivity of general glasswork, is particularly suitable for requiring not containing the luminescence glaze of heavy metal.
Embodiment 2
The weight percent adopting low temperature glass lubricant composition is P
2o
557.03%, B
2o
35.32%, Na
2o37.15%, ZnO0.20%, BaO0.20%, SnO0.05%, Bi
2o
30.05%.
The raw material of component selections is become to be accordingly: SODIUM PHOSPHATE, MONOBASIC 125.31g, boric acid 9.45g, sodium carbonate 20.96g, zinc oxide 0.20g, barium carbonate 0.30g, stannic oxide 0.05g, bismuth oxide 0.05g.
Admixtion is become according to the raw material dosage calculated, precision weighing raw material, Homogeneous phase mixing.
Admixtion is placed in corundum crucible respectively, then crucible is placed in microwave oven focal spot.
Microwave oven is airtight, and power-on, arranges output rating and fusing time respectively according to the required power of fusing and fusing time.
After microwave oven reaches the fusing time of setting, powered-down, opens fire door, and crucible is taken out, then the glass metal melted in crucible is poured out quenching, is then ground into powder, is product after sieving.
Microwave wavelength 2450MHZ, output rating 0.8KW, fusing time 15min during glass lubricant fusing.
During identical component identical weight glass batch employing furnace melting, output rating 2.5KW, temperature of fusion 700 DEG C, fusing time 40min.
Adopt microwave fusing glass lubricant and furnace melting to contrast, microwave fusing energy consumption reduces by 7 times.
Adopt mentioned component fusing above-mentioned raw materials to obtain glass lubricant, its softening temperature is low than general glass lubricant, only has 400 DEG C, and general glass lubricant softening temperature is more than 450 DEG C.550 DEG C time, the wetting angle of glass lubricant and titanium alloy described in this patent is 25 ° when shaping with mobile phone glass cover plate wetting angle 20 ° of titanium alloys and glass heat, this glass lubricant forms thin layer, be uniformly distributed masterbatch surface, lubricate, and this glass lubricant water soluble, become the aqueous solution, need not the caking agents such as methylcellulose gum be added, just can brush on masterbatch surface.Namely rinsing easily with water after the demoulding goes glass to moisten agent, is particularly suitable for mobile phone glass cover plate hot bending and is shaped.
Embodiment 3
The weight percent of employing sealing glass composition is: P
2o
550.00%, B
2o
34.80%, Na
2o38.7%, K
2o4.60%, Li
2o1.70%, SrO0.20%.
The raw material of component selections is become to be accordingly: SODIUM PHOSPHATE, MONOBASIC 109.87g, boric acid 8.53g, sodium carbonate 28.86g, salt of wormwood 8.74g, Quilonum Retard 4.20g, strontium monoxide 0.20g.
Admixtion is become according to the raw material dosage calculated, precision weighing raw material, Homogeneous phase mixing.
Admixtion is placed in corundum crucible respectively, then crucible is placed in microwave oven focal position.
Microwave oven is airtight, and power-on, arranges output rating and fusing time respectively according to the required power of fusing and fusing time.
After microwave oven reaches the fusing time of setting, powered-down, opens fire door, and crucible is taken out, then the glass metal melted in crucible is poured out quenching, is then ground into powder, is product after sieving.
Microwave wavelength 2450MHZ, output rating 1.4KW, fusing time 60min during seal glass fusing.
During identical component identical weight glass batch employing furnace melting, output rating 2.5KW, temperature of fusion 850 DEG C, fusing time 60min.
Adopt microwave fusing seal glass and furnace melting to contrast, microwave fusing energy consumption reduces by 3.75 times.
Adopt microwave oven fusing above-mentioned raw materials to obtain seal glass, its linear expansivity is very high, can reach 225 × 10
-7/ K, with the linear expansivity (231 × 10 of aluminium
-7/ K) very close, can matched seal be carried out; And the softening temperature of this seal glass is lower, be only 430 DEG C, can carry out sealing-in before aluminum products heating is not out of shape, these are all the unapproachable performances of other seal glasses.
Claims (10)
1. a preparation method for low-melting-point glass, is characterized in that: the temperature of fusion of described low-melting-point glass, lower than 850 DEG C, adopts the microwave fusing raw material preparing low temperature glass.
2. preparation method according to claim 1, is characterized in that: the wavelength of described microwave is 915MHz ~ 60GHz.
3. preparation method according to claim 1, is characterized in that: adopt industry or civilian microwave oven, microwave power is 0.8KW ~ 50KW, fusing time 15 ~ 60min.
4. preparation method according to claim 3, is characterized in that: mixed by the raw material preparing low-melting-point glass, is placed in high alumina earthenware Crucible, be placed in microwave oven focal spot, close fire door, by the power arranged and heat-up time, electrified regulation, reach fusing time just to cut off the electricity supply, open fire door, take out crucible, the glass metal melted is poured out, quenching is product after pulverizing.
5. preparation method according to claim 4, it is characterized in that: described low-melting-point glass is glass glaze, raw materials by weight portion forms 0.25 ~ 25 part by boric acid 124.33 ~ 150.98 parts, 3.42 ~ 17.10 parts, sodium carbonate, 10 ~ 25 parts, zinc oxide, 0.73 ~ 7.34 part, salt of wormwood, 0 ~ 8.93 part, calcium carbonate, Quilonum Retard.
6. preparation method according to claim 4, it is characterized in that: described low-melting-point glass is seal glass, raw materials by weight portion is made up of SODIUM PHOSPHATE, MONOBASIC 98.88-120.85 part, boric acid 7.10 ~ 26.64 parts, 0 ~ 34.82 part, sodium carbonate, 1.47 ~ 14.67 parts, salt of wormwood, Quilonum Retard 1.24 ~ 12.40 parts, strontium oxide 0.1 ~ 3 part.
7. preparation method according to claim 4, it is characterized in that: described low-melting-point glass is glass lubricant, raw materials by weight portion is made up of SODIUM PHOSPHATE, MONOBASIC 65.92 ~ 131.84 parts, boric acid 7.10 ~ 35.52 parts, 0 ~ 54.57 part, sodium carbonate, 0.2 ~ 10 part, zinc oxide, barium carbonate 0.15 ~ 7.61 part, 0 ~ 5 part, stannic oxide, bismuth oxide 0 ~ 5 part.
8. the glass glaze that obtains of preparation method according to claim 5, by weight by B
2o
370 ~ 85%, Na
2o2 ~ 10%, ZnO10 ~ 25%, K
2o0.5 ~ 5%, CaO0 ~ 5%; Li
2o0.1 ~ 10% forms.
9. the seal glass that obtains of preparation method according to claim 6, by weight by P
2o
545 ~ 55%; B
2o
34 ~ 15%; Na
2o15 ~ 40%, K
2o1 ~ 10%, Li
2o0.5 ~ 5%, SrO0.1 ~ 3% form.
10. preparation method according to claim 7 obtains glass lubricant, by weight by P
2o
530 ~ 60%, B
2o
34 ~ 20%, Na
2o20 ~ 45%, ZnO0.2 ~ 10%, BaO0.1 ~ 5%, SnO0 ~ 5%, Bi
2o
30 ~ 5% composition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676281.7A CN105293911B (en) | 2015-10-13 | 2015-10-13 | The method and low-melting-point glass of low-melting-point glass are founded with micro-wave oven |
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|---|---|---|---|
| CN201510676281.7A CN105293911B (en) | 2015-10-13 | 2015-10-13 | The method and low-melting-point glass of low-melting-point glass are founded with micro-wave oven |
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| Publication Number | Publication Date |
|---|---|
| CN105293911A true CN105293911A (en) | 2016-02-03 |
| CN105293911B CN105293911B (en) | 2017-09-26 |
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|---|---|---|---|
| CN201510676281.7A Expired - Fee Related CN105293911B (en) | 2015-10-13 | 2015-10-13 | The method and low-melting-point glass of low-melting-point glass are founded with micro-wave oven |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107629832A (en) * | 2017-09-07 | 2018-01-26 | 北京科技大学 | A kind of hot extrusion glass lubricant of titanium alloy and zircaloy and preparation method thereof |
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| CN104291597A (en) * | 2013-07-17 | 2015-01-21 | 戴长虹 | Glass-solder microwave-welded planar tempered vacuum glass edge-sealed by using bar frames |
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| CN104926144A (en) * | 2015-06-03 | 2015-09-23 | 苏州靖羽新材料有限公司 | High-temperature-resistant glass material and preparation method thereof |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639138A (en) * | 1980-08-11 | 1981-04-14 | Agency Of Ind Science & Technol | Die for serving at forcing or extruding work |
| CN103086602A (en) * | 2013-03-04 | 2013-05-08 | 内蒙古科技大学 | Method for manufacturing low-swelling microcrystalline glass through microwave heat treatment of gold tailings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107629832A (en) * | 2017-09-07 | 2018-01-26 | 北京科技大学 | A kind of hot extrusion glass lubricant of titanium alloy and zircaloy and preparation method thereof |
| CN107629832B (en) * | 2017-09-07 | 2019-05-17 | 北京科技大学 | A kind of titanium alloy and the hot extrusion glass lubricant of zircaloy and preparation method thereof |
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|---|---|
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