CN207243715U - A kind of Non-water-cooled oxidation-resistance molybdenum electrode - Google Patents
A kind of Non-water-cooled oxidation-resistance molybdenum electrode Download PDFInfo
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- CN207243715U CN207243715U CN201721019401.7U CN201721019401U CN207243715U CN 207243715 U CN207243715 U CN 207243715U CN 201721019401 U CN201721019401 U CN 201721019401U CN 207243715 U CN207243715 U CN 207243715U
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Abstract
The utility model discloses a kind of Non-water-cooled oxidation-resistance molybdenum electrode, including：The molybdenum bar of interconnection and draw torch；The outer surface of molybdenum bar is enclosed with glass layer of cloth；The periphery for drawing torch is equipped with high-temperature ceramic coating, and the periphery of high-temperature ceramic coating is equipped with glass layer of cloth, and the periphery of glass layer of cloth is cased with corundum casing.The Non-water-cooled of the utility model, reduces energy consumption, 8~20L/H of each electrode using water wisely, can effectively improve economic benefit；Non-water-cooled so that small close to glass metal at tank block and centre pane liquid temperature difference, it is ensured that the clarification and homogenization of glass metal, are beneficial to improve glass metal quality；The reliability of molybdenum electrode in use is improved, greatly reduces the probability that molybdenum oxidation or stainless steel high temperature oxidation scission occur in use for molybdenum electrode；Electrode life is grown, and can increase the stability of whole tank furnace operational process and the service life of tank furnace, and electrode overall structure it is relatively easy, it is easy to process, be easily installed.
Description
Technical field
A kind of Non-water-cooled oxidation-resistance molybdenum electrode is the utility model is related to, belongs to molybdenum electrode field.
Background technology
Metal molybdenum fusing point is high, has conductive, heat conductivility, and high temperature resistant well, and corrosion-resistant, resistance to erosion, makes it
As electrode material in electric glass melting extensive application.But metal molybdenum there is also it is fatal the shortcomings that, in aerobic ring
Easily aoxidized under border, particularly easily form MoO when higher than 600 DEG C3, easily distillation volatilization, therefore, is carried out when using molybdenum electrode
During glass smelting, prevent molybdenum electrode be oxidized into one it is most important the problem of.
The method for being usually used in protecting molybdenum electrode at present is water cooling protection, but adopts this method that there are the following problems.
(1) when using water coolers, each water coolers need to consume water 8-20L per hour, increase energy consumption；
(2) using cooling water cooling, the temperature of glass liquid close to kiln pool wall can be caused drastically to decline, influence glass in kiln
The clarification of glass liquid, homogenizing；
(3) water flowing at low temperature, it is shorter for some material since the molybdenum plate intensity of cooling close to Shui Bao positions is larger
Glass, hot glass metal also not by the position molybdenum electrode it is fully wrapped around live when have begun to condense, cause electrode roots not by
Glass is fully wrapped around firmly to cause anodizing to be broken.
(4) under high temperature during water flowing, due to rapid cooling, easily cause water jacket to burst, influence the normal use of electrode.
(5) alloy material use under long term high temperature can be aoxidized slowly, and when causing to be used for water packaging material, water bag is progressively thinning
And ultimately result in leakage；During for drawing torch material, drawing torch and being tapered, and ultimately result in fracture.
Utility model content
In order to solve in the prior art, drawbacks described above, the utility model provide a kind of Non-water-cooled antioxygen existing for water cooling protection
Change molybdenum electrode.
In order to solve the above technical problems, technical solution is as follows used by the utility model：
A kind of Non-water-cooled oxidation-resistance molybdenum electrode, including：The molybdenum bar of interconnection and draw torch；The outer surface of molybdenum bar is enclosed with
Glass layer of cloth；The periphery for drawing torch is equipped with high-temperature ceramic coating, and the periphery of high-temperature ceramic coating is equipped with glass layer of cloth, glass layer of cloth
Periphery be cased with corundum casing.
Above-mentioned Non-water-cooled oxidation-resistance molybdenum electrode, its front end are used to heat glass metal molybdenum bar to be immersed in glass metal；Rear end
Draw torch for high temperature resistant, anti-oxidant, Non-water-cooled.
It is above-mentioned to draw torch high temperature resistant, anti-oxidant, Non-water-cooled.Pass through the protection of the multilayer different structure to drawing torch so that
High-temperature alloy and air exclusion, reduce degree of oxidation, improve the service life for drawing torch.
In order to improve the uniformity of electric current, while the molybdenum oxidation at heating initial stage is reduced, above-mentioned Non-water-cooled oxidation-resistance molybdenum electrode,
Molybdenum plate is further included, molybdenum bar one end is connected with drawing torch, the connection of the other end and molybdenum plate；The outer surface of molybdenum plate is enclosed with glass layer of cloth；
The rectangular configuration that molybdenum plate is a length of 100~300mm, width is 30~100mm.The width of further preferred molybdenum plate is 50~70mm, long
For 150~250mm.
In order to facilitate prepare, maintenance, molybdenum bar is attached with drawing torch by helicitic texture, be threadedly coupled length be 10~
50mm.It is preferred that 20~40mm.
In order to ensure heating effect, while ensure the adhesive force of each layer, the stability in use for improving electrode and service life, molybdenum bar
A diameter of 10~40mm；Draw torch and draw torch for high temperature resistant stainless steel, draw a diameter of 30~70mm of torch；Draw torch surface
Roughness be not less than Ra2.5.The diameter of molybdenum bar is preferably 20~30mm；The diameter for drawing torch is preferably 45~55mm；
Further preferably, high temperature resistant stainless steel is the stainless steel of 310 trades mark.
The thermal contraction of glass-fiber-fabric in order to prevent, improves the service life of electrode, draws glass layer of cloth and corundum set on torch
Glass frit layer is equipped between pipe.
Another kind as the application improves：It will draw on torch, internal orifice is defined as close to one end of the corundum casing of molybdenum bar,
One end of corundum casing away from molybdenum bar is defined as collar extension；Collar extension is sealed using glass dust.
Refractory ceramics coating material can be zirconium oxide, aluminium oxide etc., and the thickness of refractory ceramics coating is 0~1mm,
It is preferred that molybdenum bar and the glass layer of cloth drawn on torch are glass plain, it is preferable that high-temperature ceramic coating material therefor is polynary stabilization
Zirconia ceramics material, the granularity of zirconia ceramics material is 100~500 mesh；The thickness of high-temperature ceramic coating for 100~
500 μm, it is prepared using plasma spraying method；Molybdenum bar and the glass layer of cloth for drawing on torch be high-strength fiber glass cloth, molybdenum bar with
The thickness for drawing the glass layer of cloth on torch is 1~5mm, preferably 2~3mm；The wall thickness of corundum casing is 1~5mm, preferably 2~
3mm, corundum casing inner diameter are 50~70mm.
Zirconia ceramics material has higher intensity, fracture toughness and well resistance to compared with other ceramic materials
Grind performance.On the one hand it is due to its fusing point height, the maximum operation (service) temperature in oxidizing atmosphere is up to 2500 as preferred material
DEG C, fusing point is up to 2700 DEG C, and chemical composition is good with thermal structure stability；On the other hand, be because it have very low thermal conductivity with
And the thermal coefficient of expansion closest with metallic matrix, so as to ensure that coating has good heat-insulated and thermal shock resistance.Shen
Ask someone it has been investigated that, when pure zirconia material is as coating material, structure is not sufficiently stable, and is easy to cracked and is peeled off existing
As after adding the multivariant oxide of special ratios wherein, its structural stability can be increased.
As the multivariant oxide added in zirconium oxide, wherein, 2~4wt% of yittrium oxide, 3~6wt% of cerium oxide, oxidation
0.5~1wt% of magnesium, 8~12wt% of aluminium oxide, 0~2wt% of titanium dioxide.Yittrium oxide, cerium oxide, magnesia are as zirconium oxide
The main stabilizer of ceramic coating, using multicomponent mixture as stabilizer, can effectively increase the structural stability of film layer；It is single
Solely when using aluminium oxide and titanium dioxide as stabilizer, stablizing effect is relatively poor, but when being used in mixed way, can improve film layer
Hardness and toughness, reduce the stress concentration of film layer, improve structural stability.
The preparation method of above-mentioned Non-water-cooled oxidation-resistance molybdenum electrode, includes the following steps：
(1) torch is drawn in processing, carries out surface sand-blasting roughening treatment to that need to carry out coating position, blasting treatment rank is not less than
Ra2.5 ranks；
(2) torch that draws for handling step (1) well is washed and dried using acetone or alcohol；
(3) position to be sprayed for drawing torch handled well to step (2) carries out plasma spraying and obtains high-temperature ceramic coating；
(4) in the high-temperature ceramic coating periphery tight glass-fiber-fabric obtained by step (3)；
(5) it is tightly sleeved corundum casing in the glass-fiber-fabric periphery obtained by step (4)；
(6) screwed molybdenum bar is screwed to and can not be rotated further with drawing torch, then carried out molybdenum bar with glass-fiber-fabric
Parcel.
The preparation method of above-mentioned Non-water-cooled oxidation-resistance molybdenum electrode, includes the following steps：
(1) torch is drawn in processing, carries out surface sand-blasting roughening treatment to that need to carry out coating position, blasting treatment rank is not less than
Ra2.5 ranks；
(2) torch that draws for handling step (1) well is washed and dried using acetone or alcohol；
(3) position to be sprayed for drawing torch handled well to step (2) carries out plasma spraying and obtains high-temperature ceramic coating；
(4) in the high-temperature ceramic coating periphery tight glass-fiber-fabric obtained by step (3)；
(5) it is tightly sleeved corundum casing in the glass-fiber-fabric periphery obtained by step (4)；
(6) sealed in corundum casing collar extension using glass dust；
(7) screwed molybdenum bar is screwed to and can not be rotated further with drawing torch, then carried out molybdenum bar with glass-fiber-fabric
Parcel.
Phenomena such as above-mentioned gained high-temperature ceramic coating strong adhesive force, long-time service is without peeling, peeling；Plasma spraying is existing
There is technology；Needed after the installation of corundum casing close irremovable.
The unmentioned technology of the utility model is with reference to the prior art.
The beneficial effects of the utility model are：(1) Non-water-cooled, reduction energy consumption, 8~20L/H of each electrode using water wisely,
Economic benefit can be effectively improved；(2) Non-water-cooled so that it is small close to glass metal at tank block and centre pane liquid temperature difference, it can protect
The clarification and homogenization of glass metal are demonstrate,proved, are beneficial to improve glass metal quality；(3) reliability of molybdenum electrode in use is improved,
Substantially reduce the probability that molybdenum oxidation or stainless steel high temperature oxidation scission occur in use for molybdenum electrode；(4) electrode life
It is long, the stability of whole tank furnace operational process and the service life of tank furnace can be increased, and electrode overall structure is relatively easy, processing
Conveniently, it is easily installed.
Brief description of the drawings
Fig. 1 is the utility model Non-water-cooled oxidation-resistance molybdenum electrode stereogram；
Fig. 2 is the utility model Non-water-cooled oxidation-resistance molybdenum electrode profile (eliminating molybdenum plate)；
In figure, 1 be molybdenum bar, 2 for draw torch, 3 be high-temperature ceramic coating, 4 be glass layer of cloth, 5 be corundum casing, 6 be glass
The sealing of glass powder, 7 are molybdenum plate.
Embodiment
The utility model in order to better understand, the content of the utility model is furtherd elucidate with reference to embodiment, but
The content of the utility model is not limited solely to the following examples.
Embodiment 1
As shown in the figure, Non-water-cooled oxidation-resistance molybdenum electrode, including：Molybdenum bar, draw torch and molybdenum plate；Molybdenum bar one end is with drawing torch spiral shell
Line connection, the other end and molybdenum plate are connected by bolt and nut；The outer surface of molybdenum bar is enclosed with glass layer of cloth；The periphery for drawing torch is set
There is high-temperature ceramic coating, the periphery of high-temperature ceramic coating is equipped with glass layer of cloth, and the periphery of glass layer of cloth is cased with corundum casing；Molybdenum plate
Outer surface be enclosed with glass layer of cloth；
The rectangular configuration that molybdenum plate is a length of 150mm, width is 50mm.
Molybdenum bar and the threaded connection length for drawing torch are 30mm, wherein, molybdenum bar is equipped with external screw thread, draws torch equipped with interior
Screw thread.
Molybdenum bar is smaller than the outside diameter of the other end equipped with externally threaded one end, and molybdenum bar does not set a diameter of of external screw thread one end
30mm, a diameter of 25mm equipped with external screw thread one end；Draw the high temperature resistant stainless steel that torch is 310 trades mark and draw torch, draw torch
A diameter of 50mm；The roughness grade number for drawing torch surface is Ra2.5 grades.
It will draw on torch, internal orifice is defined as close to one end of the corundum casing of molybdenum bar, one of the corundum casing away from molybdenum bar
End is defined as collar extension；Collar extension is sealed using glass dust.
High-temperature ceramic coating material therefor is the zirconia ceramics material of polynary stabilization, and the granularity of zirconia ceramics material is
270~330 mesh；The thickness of high-temperature ceramic coating is 500 μm, is prepared using plasma spraying method；Molybdenum bar and draw torch
On glass layer of cloth be high-strength fiber glass cloth, molybdenum bar and the thickness for drawing the glass layer of cloth on torch are 2mm；Corundum casing inner diameter is
55mm, wall thickness 3mm.
Multivariant oxide in the zirconia ceramics material of polynary stabilization includes, yittrium oxide 3wt%, cerium oxide 5wt%, oxygen
Change magnesium 0.5wt%, aluminium oxide 10wt% and titanium dioxide 1.5wt%.
The preparation method of above-mentioned Non-water-cooled oxidation-resistance molybdenum electrode, includes the following steps：
(1) torch is drawn in processing, carries out surface sand-blasting roughening treatment to that need to carry out coating position, blasting treatment rank is not less than
Ra2.5 ranks；
(2) torch that draws for handling step (1) well is washed and dried using acetone or alcohol；
(3) position to be sprayed for drawing torch handled well to step (2) carries out plasma spraying and obtains high-temperature ceramic coating；
(4) in the high-temperature ceramic coating periphery tight glass-fiber-fabric obtained by step (3)；
(5) it is tightly sleeved corundum casing in the glass-fiber-fabric periphery obtained by step (4)；
(6) sealed in corundum casing collar extension using glass dust；
(7) screwed molybdenum bar is screwed to and can not be rotated further with drawing torch, then carried out molybdenum bar with glass-fiber-fabric
Parcel.
Above-mentioned electrode is used for Fiberglass path, as path glass heating element.Electrode molybdenum is in glass metal, with
Air exclusion, uses non-oxidation phenomenon after 5 years.
Draw torch protection zone to work at 1000~1200 DEG C for a long time, and in air ambient.
Electrode for protection is not used, i.e., the electrode for only drawing torch body (is no protective layer, other parameters are same
Embodiment 1), draw torch using 6 months and aoxidize, severe oxidation fracture occur using torch body is drawn after 1 year, so as to cause
Electrode damage, and the electrode of the application processing is used, draw torch body and air exclusion, can prevent the high-temperature oxydation of body,
After continuous use 5 years, draw protective layer on torch without come off, without relaxation, without peeling, draw existing without any oxidation on torch body
As, therefore the application electrode life, more than 5 years, electrode life effectively improves.
Embodiment 2
It is substantially the same manner as Example 1, except that：A length of 200mm, the width 70mm of molybdenum plate；Molybdenum bar is with drawing torch
Threaded connection length is 35mm；Molybdenum bar does not set a diameter of 35mm of external screw thread one end, a diameter of 30mm equipped with external screw thread one end；
Draw a diameter of 55mm of torch；The thickness of high-temperature ceramic coating is 450 μm；Molybdenum bar and draw the thickness of the glass layer of cloth on torch and be
3mm；Corundum casing inner diameter is 64.5mm, wall thickness 3mm.
Embodiment 3
It is substantially the same manner as Example 1, except that：Draw and glass is equipped between the glass layer of cloth on torch and corundum casing
Bisque.
Embodiment 4
It is substantially the same manner as Example 1, except that：The multivariant oxide added in zirconium oxide includes, yittrium oxide
2wt%, cerium oxide 4wt%, magnesia 1wt%, aluminium oxide 8wt% and titanium dioxide 1wt%.
Claims (7)
- A kind of 1. Non-water-cooled oxidation-resistance molybdenum electrode, it is characterised in that：Including：The molybdenum bar of interconnection and draw torch；Outside molybdenum bar It is coated with glass layer of cloth；The periphery for drawing torch is equipped with high-temperature ceramic coating, and the periphery of high-temperature ceramic coating is equipped with glass-fiber-fabric Layer, the periphery of glass layer of cloth is cased with corundum casing.
- 2. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 1, it is characterised in that：Molybdenum plate is further included, molybdenum bar one end is with drawing Torch connects, and the other end is connected with molybdenum plate；The outer surface of molybdenum plate is enclosed with glass layer of cloth；Molybdenum plate is a length of 100~300mm, width For the rectangular configuration of 30~100mm.
- 3. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 1 or 2, it is characterised in that：Molybdenum bar passes through screw thread with drawing torch Structure is attached, and threaded connection length is 10~50mm.
- 4. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 1 or 2, it is characterised in that：A diameter of 10~40mm of molybdenum bar； Draw torch and draw torch for high temperature resistant stainless steel, draw a diameter of 30~70mm of torch；The roughness for drawing torch surface is not less than Ra2.5。
- 5. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 4, it is characterised in that：High temperature resistant stainless steel is 310 trades mark Stainless steel.
- 6. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 1 or 2, it is characterised in that：Draw glass layer of cloth on torch with Glass frit layer is equipped between corundum casing.
- 7. Non-water-cooled oxidation-resistance molybdenum electrode as claimed in claim 1 or 2, it is characterised in that：It will draw on torch, close to molybdenum bar One end of corundum casing is defined as internal orifice, and one end of the corundum casing away from molybdenum bar is defined as collar extension；Collar extension is close using glass dust Envelope.
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| CN201721019401.7U CN207243715U (en) | 2017-08-15 | 2017-08-15 | A kind of Non-water-cooled oxidation-resistance molybdenum electrode |
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| CN201721019401.7U CN207243715U (en) | 2017-08-15 | 2017-08-15 | A kind of Non-water-cooled oxidation-resistance molybdenum electrode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445451A (en) * | 2017-08-15 | 2017-12-08 | 中材科技股份有限公司 | A kind of Non-water-cooled oxidation-resistance molybdenum electrode and preparation method thereof |
| CN110054395A (en) * | 2019-06-03 | 2019-07-26 | 山东力诺特种玻璃股份有限公司 | Electric smelter electrode water sleeve installation method |
| CN110967879A (en) * | 2019-12-30 | 2020-04-07 | 重庆臻宝实业有限公司 | Electrode bar for lower electrode and method for manufacturing the same |
-
2017
- 2017-08-15 CN CN201721019401.7U patent/CN207243715U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445451A (en) * | 2017-08-15 | 2017-12-08 | 中材科技股份有限公司 | A kind of Non-water-cooled oxidation-resistance molybdenum electrode and preparation method thereof |
| CN107445451B (en) * | 2017-08-15 | 2023-08-15 | 中材科技股份有限公司 | Water-cooling-free antioxidant molybdenum electrode and preparation method thereof |
| CN110054395A (en) * | 2019-06-03 | 2019-07-26 | 山东力诺特种玻璃股份有限公司 | Electric smelter electrode water sleeve installation method |
| CN110967879A (en) * | 2019-12-30 | 2020-04-07 | 重庆臻宝实业有限公司 | Electrode bar for lower electrode and method for manufacturing the same |
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