CN103024953B - Insulating heat-resistant heating wire and preparation method - Google Patents
Insulating heat-resistant heating wire and preparation method Download PDFInfo
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- CN103024953B CN103024953B CN201210495037.7A CN201210495037A CN103024953B CN 103024953 B CN103024953 B CN 103024953B CN 201210495037 A CN201210495037 A CN 201210495037A CN 103024953 B CN103024953 B CN 103024953B
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- China
- Prior art keywords
- heating wire
- metal electric
- glass
- heated filament
- electric heated
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Abstract
The invention relates to a preparation method of an insulating heat-resistant heating wire. The method comprises the following steps: 1) using a thin metal heating wire, forming a glass coating on the surface of the thin metal heating wire by deriving the glass from a high-temperature ceramic discharge spout through a melting furnace under the effect of an impregnating compound so as to form a glass fiber metal heating wire, and baking at 100-150 DEG C, winding and shaping the glass fiber metal heating wire, wherein the glass coating thickness of the glass fiber metal heating wire is 10-150 microns; 2) knitting multi-strand heating wires to form an insulating heat-resistant heating wire; 3) performing the glass depositing treatment on the surface of each metal heating wire, wherein the diameter range of each thin metal heating wire is 10-250 microns. The heating wire manufactured by using the method provided by the invention has good insulativity, high temperature resistance, and good flexibility, corrosion resistance and ageing resistance.
Description
One, technical field
The present invention relates to a kind of heating wire and preparation method, especially the heating wire of insulation high-temperature-resistant and preparation method.
Two, background technology
At present, heating wire is widely used on the industry heating facilities such as metallurgical machinery, medical treatment, chemical industry, pottery, electronics, electrical equipment, glass and civilian heating appliances, existing heating wire mostly is exposed heating wire, its insulation property are poor on the one hand, poor stability, naked heating wire easily causes short circuit on the other hand, and useful life is shorter.The process majority of the existing insulated heating wire of other is at its surface-coated coatings, then carries out chemical oxidation treatment.But this processing method major defect is: easily discharge micro-poisonous gas after electric heating, it is not long that the mould rainy day can produce mildew, useful life.Chinese patent application 97199661.X proposes a kind of coating material and applies many one metal wires, and prepare the method forming many fine wires, although the method can realize coating wiry, coat is relatively loose, is easy to come off, and non-refractory; Chinese patent application CN200580001751.4 proposes a kind of method be fixed on by abrasive particle by means of electro-plating method on wire, although the wire coating that the method manufactures is relatively firm, the coating on surface is even not.Chinese patent application CN02147569.5 proposes and a kind of obtains homogeneous coating method wiry by vapour deposition process, although wire superficial layer prepared by which evenly, firmly cannot improve insulating properties wiry.How to make heating wire surface form the coating of even, firm, heat-resisting insulating properties, become a difficult problem for heating wire industry.
Therefore it is very necessary for developing a kind of novel insulation high-temperature-resistant heating wire.
Three, summary of the invention
The object of the invention is, a kind of insulation high-temperature-resistant heating wire and preparation method are proposed, utilize insulating properties and the temperature tolerance of glass, formed on the surface of heating wire evenly, fine and close, resistant to elevated temperatures insulating coating, thus make a kind of heating wire of high-quality insulation high-temperature-resistant.
Technical scheme of the present invention is: a kind of insulation high-temperature-resistant heating wire, and at the outer surface glass that thin metal electric heated filament is exposed, every root thin metal electric heating filament diameter scope is 10 ~ 250 μm, and vitreous coating process has all been carried out in every root metal electric heated filament surface; Form the glass fibre of coated metal heating wire, i.e. glass fibre metal electric heated filament; Different model product is obtained through reprocessing braiding.
Insulation high-temperature-resistant heating wire is preparation method comprise:
1) with thin metal electric heated filament, glass lets slip a remark derivation under size effect at thin metal electric heated filament surface formation glass coating formation glass fibre metal electric heated filament by melting furnace through refractory ceramics, and through smoking (100-150 DEG C), glass fibre metal electric heating wire ring is coiled into shape, the glass coating thickness 10-150 μm of glass fibre metal electric heated filament.Especially 10-50 μm.
Glass coating surface uniform to scribble under the condition of size 110-140 DEG C and smokes 15-60min;
2) the heating wire braiding that multiply is thin forms and obtains product insulation high-temperature-resistant heating wire.
3) every root thin metal electric heating filament diameter scope is 10 ~ 250 μm, and vitreous coating process has all been carried out in every root metal electric heated filament surface;
Further, after vitreous coating process, vitreous coating range of coat thicknesses is 10 ~ 50 μm;
Glass formula mass ratio (part) in step (1) is: SiO
2, 50 ~ 65; CaO, 15 ~ 25; MgO, 0.001 ~ 8; Al
2o
3, 10 ~ 18; B
2o
3, 8 ~ 11; Na
2o, 0.2 ~ 0.4.The good prescription quality ratio (part) adopted is: Neoxil 728,4 ~ 6; Neoxil 965,1 ~ 3; Neoxil968,0.5 ~ 1wt%; (modification) epoxy resin 506,0.4 ~ 0.8; PEG 400MO, 0.3 ~ 0.6; A-174,0.2 ~ 0.4wt%; A-1100,0.2 ~ 0.4; Melt temperature in step (1) is 550 ~ 600 DEG C.Also conventional size can be adopted.
The thin metal electric heated filament braiding of multiply glass fibre forms insulation high-temperature-resistant heating wire finished product, is glass material insulating protective layer therebetween.
The invention has the beneficial effects as follows: the present invention compared with prior art, has following outstanding advantages: (1) uses glass fiber material to have excellent insulating properties, uniformity and heat-resisting quantity as coated material; The heat resisting temperature of insulation high-temperature-resistant heating wire can reach more than 400 DEG C; (2) adopt the thin metal electric heated filament braiding of multiply to form and obtain product, metal electric heated filament has good pliability; (3) surperficial glass coating processing makes metal electric heated filament have good corrosion resistance and ageing resistance, can increase the service life.
Four, accompanying drawing explanation
The metal electric heated filament preparation method schematic flow sheet of Fig. 1 insulation high-temperature-resistant.
Five, embodiment
For the insulation processing embodiments on metal electric heated filament surface, can see Fig. 1:
(1), choose the exposed metal electric heated filament of certain diameter, surface cleaning process is carried out to it;
(2), metal electric heated filament is coiled into shape (coating layer thickness is 10-30 μm especially) by melting furnace (special glass formula can be adopted to add suitable flux, make melting reduce to about 600 degree) through let slip a remark derivation-special surface inorganic agent (size)-smoke (100-150 DEG C)-enclose of refractory ceramics.
(3) the thin metal electric heated filament braiding of multiply that, process obtains forms and obtains product.
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Embodiment 1:
Choose the Cr20Ni80 metal electric heated filament 1 kilogram that diameter is 0.15mm, with cleaning agents such as ethanol, surface cleaning process is carried out to it, metal electric heated filament enters in special ceramic nozzle and glass passes through drawing process jointly, the speed of Control Nozzle wire drawing is 70m/S, glass initial melt temperature is 600 DEG C, glass is made to form the coating of 20 ± 5 μm in wire surface, the metal electric heated filament having wrapped up coating is made to pass through size again, dry 20 minutes at 135 ± 5 DEG C, the metal electric heated filament of coating is made to have good pliability, by metal electric heating filament winding rolling or weave into stock, encapsulate stand-by.
Glass is joined as follows
| SiO 2 | 55% |
| CaO | 16% |
| MgO | 6% |
| Al 2O 3 | 12% |
| B 2O 3 | 8.2% |
| Na 2O | 0.3% |
Size formula is as follows
| Neoxil 728 | 5% |
| Neoxil 965 | 2% |
| Neoxil 968 | 0.5% |
| Modified epoxy 506 | 0.6% |
| PEG 400MO | 0.5% |
| A-174 | 0.3% |
| A-1100 | 0.3% |
Following proportioning also can: SiO
2, 59; CaO, 25; MgO, 2; Al
2o
3, 17; B
2o
3, 11; Na
2o, 0.2.
Neoxil 728 is sizing materials that the fiber of DSM N. V. and polymeric material infiltrate, and A-174, A-1100 are coupling agents.The present invention can also adopt Neoxil 728 size of the single trade mark, but poor processability is a little.
Embodiment 2:
Choose the Cr20Ni80 metal electric heated filament 1.5 kilograms that diameter is 0.25mm, with cleaning agents such as ethanol, surface cleaning process is carried out to it, metal electric heated filament imports in special ceramic nozzle and glass passes through drawing process jointly, the speed of Control Nozzle wire drawing is 10m/S, glass initial melt temperature is 750 DEG C, glass is made to form the coating of 15 ± 5 μm in wire surface, the metal electric heated filament having wrapped up coating is made to pass through size again, oven dry 20 minutes at 130 ± 5 DEG C, the metal electric heated filament of coating is made to have good pliability, by metal electric heating filament winding rolling or weave into stock, encapsulate stand-by.
Glass formula is as follows
| SiO 2 | 53% |
| CaO | 15% |
| MgO | 6% |
| Al 2O 3 | 16% |
| B 2O 3 | 7.2% |
| Na 2O | 0.3% |
Size formula is as follows
| Neoxil 728 | 4% |
| Neoxil 965 | 3% |
| Neoxil 968 | 0.7% |
| Modified epoxy 506 | 0.4% |
| PEG 400MO | 0.2% |
| A-174 | 0.6% |
| A-1100 | 0.7% |
Embodiment 3:
Choose the Cr20Ni80 metal electric heated filament 3.0 kilograms that diameter is 0.95mm, with cleaning agents such as ethanol, surface cleaning process is carried out to it, metal electric heated filament imports in special ceramic nozzle and glass passes through drawing process jointly, the speed of Control Nozzle wire drawing is 5m/S, glass initial melt temperature is 900 DEG C, wire drawing and coating at 900 DEG C, glass is made to form the coating of 15 ± 5 μm in wire surface, the metal electric heated filament having wrapped up coating is made to pass through size again, dry at 125 ± 5 DEG C, the metal electric heated filament of coating is made to have good pliability, by metal electric heating filament winding rolling or weave into stock, encapsulate stand-by.
| SiO 2 | 50% |
| CaO | 18% |
| MgO | 6% |
| Al 2O 3 | 16% |
| B 2O 3 | 7.2% |
| Na 2O | 0.3% |
Size formula is as follows
| Neoxil 728 | 5% |
| Neoxil 965 | 6% |
| Neoxil 968 | 0.2% |
| Modified epoxy 506 | 0.8% |
| PEG 400MO | 0.7% |
| A-174 | 0.5% |
| A-1100 | 0.2% |
The life-span of metal electric heated filament sees the following form
Claims (1)
1. insulation high-temperature-resistant heating wire preparation method, is characterized in that comprising the steps:
1) with thin metal electric heated filament, glass is let slip a remark to derive through refractory ceramics by melting furnace and is evenly being scribbled under size effect, forms glass coating and namely forms glass fibre metal electric heated filament, and smoke 15-60min through 110-140 DEG C on thin metal electric heated filament surface; The glass coating thickness 10-50 μm of glass fibre metal electric heated filament, glass fibre metal electric heating wire ring is coiled into shape;
2) multiply glass fibre metal electric heated filament weaves and obtains insulation high-temperature-resistant heating wire;
3) every root thin metal electric heating filament diameter scope is 10 ~ 250 μm, and vitreous coating process is all carried out in every root metal electric heated filament surface;
Glass coating prescription quality ratio in step 1) is: SiO
2, 50 ~ 65; CaO, 15 ~ 25; MgO, 0.001 ~ 8; Al
2o
3, 10 ~ 18; B
2o
3, 8 ~ 11; Na
2o, 0.2 ~ 0.4;
Size prescription quality ratio is: Neoxil 728,4 ~ 6 wt%; Neoxil 965,1 ~ 3 wt%; Neoxil 968,0.5 ~ 1wt%; Epoxy resin 506,0.4 ~ 0.8 wt%; PEG 400MO, 0.3 ~ 0.6 wt%; A-174,0.2 ~ 0.4wt%; A-1100,0.2 ~ 0.4 wt%.
2. insulation high-temperature-resistant heating wire preparation method according to claim 1, it is characterized in that the thin metal electric heated filament braiding of multiply glass fibre forms insulation high-temperature-resistant heating wire finished product, is glass material insulating protective layer therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495037.7A CN103024953B (en) | 2012-11-28 | 2012-11-28 | Insulating heat-resistant heating wire and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495037.7A CN103024953B (en) | 2012-11-28 | 2012-11-28 | Insulating heat-resistant heating wire and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN103024953A CN103024953A (en) | 2013-04-03 |
| CN103024953B true CN103024953B (en) | 2015-06-10 |
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|---|---|---|---|
| CN201210495037.7A Expired - Fee Related CN103024953B (en) | 2012-11-28 | 2012-11-28 | Insulating heat-resistant heating wire and preparation method |
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| CN107069253B (en) * | 2017-05-19 | 2022-12-23 | 佛山市高明毅力温控器有限公司 | Insulated electric heating wire and power line connecting structure of single electric heating wire and manufacturing method thereof |
| CN108235471A (en) * | 2018-01-29 | 2018-06-29 | 刘晓荣 | The overlength electrothermal tube and its processing method of a kind of soil remediation original position thermal desorption |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890272A (en) * | 1996-11-12 | 1999-04-06 | Usf Filtration And Separations Group, Inc | Process of making fine metallic fibers |
| CN101395962A (en) * | 2006-03-03 | 2009-03-25 | 贝卡尔特股份有限公司 | Glass-coated metallic filament cables for use in electrical heatable textiles |
-
2012
- 2012-11-28 CN CN201210495037.7A patent/CN103024953B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890272A (en) * | 1996-11-12 | 1999-04-06 | Usf Filtration And Separations Group, Inc | Process of making fine metallic fibers |
| CN101395962A (en) * | 2006-03-03 | 2009-03-25 | 贝卡尔特股份有限公司 | Glass-coated metallic filament cables for use in electrical heatable textiles |
Non-Patent Citations (1)
| Title |
|---|
| 尹洪峰等.复合材料增强体.《复合材料》.冶金工业出版社,2010,第24～25页. * |
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