CN113686160A - Screen protection insulating sleeve and manufacturing process thereof - Google Patents
Screen protection insulating sleeve and manufacturing process thereof Download PDFInfo
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- CN113686160A CN113686160A CN202111031077.1A CN202111031077A CN113686160A CN 113686160 A CN113686160 A CN 113686160A CN 202111031077 A CN202111031077 A CN 202111031077A CN 113686160 A CN113686160 A CN 113686160A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/942—Calcium carbide
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Abstract
本发明提供一种护屏绝缘套件，具有采用多层材料模压固化为一体的立面结构和水平面结构，立面结构系依圆周等分圆筒而成的弧形薄壁，水平面结构系立面结构的下端沿径向朝外伸出的扇环状薄壁；立面结构包括依次层叠的第一云母纸、第二云母纸、第一玻纤布、第一云母板、第二玻纤布、第三云母纸、第四云母纸，各层之间通过高温胶水贴合；水平面结构包括承继于立面结构的第一云母纸、第二云母纸、第一玻纤布、第二玻纤布、第三云母纸、第四云母纸，还包括层叠在第一玻纤布、第二玻纤布之间的第二云母板、第三云母板。本发明还提供一种护屏绝缘套件制作工艺，通过一个钢模将多层材料模压成型出所述的护屏绝缘套件。
The invention provides a shield insulation kit, which has a façade structure and a horizontal plane structure which are molded and solidified by using multiple layers of materials. The lower end of the structure is a fan-shaped thin wall extending radially outward; the façade structure includes the first mica paper, the second mica paper, the first glass fiber cloth, the first mica board, and the second glass fiber cloth stacked in sequence , the third mica paper, the fourth mica paper, the layers are pasted by high-temperature glue; the horizontal plane structure includes the first mica paper, the second mica paper, the first glass fiber cloth, the second glass fiber inherited from the facade structure The cloth, the third mica paper, and the fourth mica paper also include a second mica board and a third mica board stacked between the first glass fiber cloth and the second glass fiber cloth. The present invention also provides a manufacturing process for the shielding insulating kit, wherein the shielding insulating kit is formed by molding multiple layers of materials through a steel mold.
Description
Technical Field
The invention relates to the technical field of high-frequency calcium carbide furnaces, in particular to a shield insulation sleeve and a manufacturing process thereof.
Background
The high-frequency calcium carbide furnace is a main device for producing calcium carbide (calcium carbide), and the production principle is that high-frequency and high-voltage electric arcs are released through electrodes in a furnace body, and the electric arcs are used for generating high temperature so that coke and calcium oxide are subjected to melting reaction to generate the calcium carbide.
In the prior art, an electrode protective screen is important equipment on a high-frequency calcium carbide furnace. As shown in fig. 1, the electrode shield 1 is generally formed of a plurality of shield units 11 having the same shape, and the shield units 11 are stainless steel bodies having cooling water circulation units inside. The outside of electrode protection screen 1 is the furnace chamber of high frequency carbide stove promptly, has the high temperature radiation of thousands of degrees centigrade that electrified molten state carbide leads to in the furnace chamber, and the inside of electrode protection screen 1 has internal equipments such as electrode, contact element, low ring hose, electrode barrel, and electrode protection screen 1 plays high temperature thermal insulation and insulating protection to internal equipments.
The applicant researches and discovers that the electrode protection screen 1 shown in fig. 1 has the hidden danger that the lower end of the protection screen unit 11 is easy to be punctured by electric arcs, once the lower end of the protection screen unit 11 is punctured by the electric arcs, cooling water is leaked into a furnace body, and serious safety accidents are easily caused.
Disclosure of Invention
The invention aims to provide a shield insulation external member which can apply reliable insulation protection to the lower end of a shield unit of an electrode shield in the prior art so as to prevent safety accidents caused by cooling water leakage entering a furnace body due to arc breakdown of the shield unit.
In order to achieve the above object, the present invention adopts the following technical solutions.
The screen protection insulating external member is provided with a vertical surface structure and a horizontal surface structure which are molded and cured into a whole by adopting a multi-layer material, wherein the vertical surface structure is an arc-shaped thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure is a fan-shaped thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure;
wherein, a plurality of screw through holes are arranged on the vertical surface structure along the radial direction;
the facade structure comprises a first mica paper, a second mica paper, a first glass fiber cloth, a first mica plate, a second glass fiber cloth, a third mica paper and a fourth mica paper which are sequentially stacked, wherein the layers are bonded through high-temperature glue;
the horizontal plane structure comprises first mica paper, second mica paper, first glass fiber cloth, second glass fiber cloth, third mica paper and fourth mica paper which are born in the vertical plane structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth, and all the layers are also attached through high-temperature glue.
The shield insulation external member among the above-mentioned technical scheme is applied to the shield unit of electrode shield among the prior art, and the concrete usage is:
the vertical surface structure is matched with the inner wall surface of the screen protection unit, and the horizontal surface structure is matched with the lower end surface of the screen protection unit;
fixing the shield insulation sleeve on the shield unit by adopting a screw with insulation protection through a screw hole;
the shield unit combined with the shield insulation external member is finally assembled into the electrode shield, when the shield unit is used for the high-frequency calcium carbide furnace, the shield insulation external member provides reliable insulation protection for the lower end of the shield unit, and the effect of anticipatively preventing cooling water from leaking into the furnace body and causing safety accidents due to the fact that electric arcs puncture the shield unit is achieved.
In view of the fact that the lower end face of the screen protection unit is the part which is most prone to arc breakdown in the prior art, the second mica plate and the third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth are arranged in the horizontal plane structure corresponding to the lower end face of the screen protection unit, and therefore the performance of the lower end face of the screen protection unit for preventing arc breakdown is further enhanced.
In order to obtain the screen protection insulating external member, the invention also provides a manufacturing process of the screen protection insulating external member, wherein a plurality of layers of materials are molded into the screen protection insulating external member by a steel die, and the manufacturing process comprises the following steps:
s01, paving a polyester film in a die cavity of the steel die;
s02, paving first mica paper on the polyester film, and then coating high-temperature glue on the first mica paper;
s03, attaching second mica paper to the first mica paper, and then coating high-temperature glue on the second mica paper;
s04, attaching first glass fiber cloth to the second mica paper, and then coating high-temperature glue on the first glass fiber cloth;
s04, attaching a first mica plate corresponding to the vertical structure, a second mica plate corresponding to the horizontal structure and a third mica plate to the first fiberglass cloth, and then respectively coating high-temperature glue on the first mica plate, the second mica plate and the third mica plate;
s05, attaching second glass fiber cloth to the first mica plate, the second mica plate and the third mica plate, and then coating high-temperature glue on the second glass fiber cloth;
s06, attaching third mica paper to the second glass fiber cloth, and then coating high-temperature glue on the third mica paper;
s07, attaching a fourth mica paper to the third mica paper;
s08, paving a polyester film on the fourth mica paper;
s09-closing the die by a steel die to mold and solidify the first mica paper, the second mica paper, the first glass fiber cloth, the first mica plate, the second mica plate, the third mica plate, the second glass fiber cloth, the third mica paper and the fourth mica paper into a whole, and obtaining a blank after demolding;
s10, cutting and grinding the blank according to the design size of the finished product, and drilling a screw through hole to obtain the finished product of the shield insulation sleeve.
Compared with the prior art, the invention has the beneficial effects that:
the protective screen unit provides reliable insulation protection for the part which is easy to be punctured by electric arcs, and can effectively prevent the safety accidents caused by the cooling water leaking into the furnace body due to the fact that the electric arcs puncture the protective screen unit.
The present invention will be further described with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic view of the structure of an electrode shield according to the present invention.
Fig. 2 is a schematic structural view of a shield insulating sleeve according to the present invention.
Fig. 3 is a schematic cross-sectional view of a shield insulation kit according to the present invention.
Fig. 4 is a reference view showing a state of use of the shield insulating kit according to the present invention.
Fig. 5 is a schematic diagram of a process for manufacturing a shield insulating sleeve according to the present invention.
Fig. 6 is a schematic view of a boiling and applying mode of the first mica paper in the manufacturing process of the screen protection insulation kit according to the invention.
Fig. 7 is a schematic view of a boiling-down mode of a first glass fiber cloth in the manufacturing process of the screen protection insulating sleeve according to the invention.
Detailed Description
As shown in fig. 2 and 3, the shielding insulating kit provided by the present invention has a vertical surface structure 21 and a horizontal surface structure 22 which are molded and cured into a whole by using a multi-layer material, wherein the vertical surface structure 21 is an arc thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure 22 is a fan-ring-shaped thin wall extending radially outwards from the lower end of the vertical surface structure 21;
wherein, the elevation structure 21 is radially provided with a plurality of screw through holes 23;
the facade structure 21 comprises a first mica paper 201, a second mica paper 202, a first fiberglass cloth 203, a first mica plate 204, a second fiberglass cloth 205, a third mica paper 206 and a fourth mica paper 207 which are sequentially stacked, and the layers are bonded through high-temperature glue;
the horizontal structure 22 includes a first mica paper 201, a second mica paper 202, a first fiberglass cloth 203, a second fiberglass cloth 205, a third mica paper 206, a fourth mica paper 207, a second mica plate 208, a third mica plate 209, and a high-temperature glue, wherein the first mica paper 201, the second mica paper 202, the first fiberglass cloth 203, the second fiberglass cloth 205, the third mica paper 206, and the fourth mica paper 207 are carried on the vertical structure 21, and the second mica plate 208 and the third mica plate 209 are stacked between the first fiberglass cloth 203 and the second fiberglass cloth 205, and are bonded together by the high-temperature glue.
As shown in fig. 4, the shield insulating sleeve in the above technical solution is applied to the shield unit 11 in the electrode shield 1 shown in fig. 1, and is engaged with the inner wall surface of the shield unit 11 through the vertical structure 21, and engaged with the lower end surface of the shield unit 11 through the horizontal structure 22, and is fixed on the shield unit 11 through the screw hole 23 by using a screw (not shown) having an insulating shield. Finally, the shield unit 11 incorporating the shield insulation kit is finally assembled into the electrode shield 1. When the protective screen insulation sleeve is used for a high-frequency calcium carbide furnace, the protective screen insulation sleeve provides reliable insulation protection for the lower end of the protective screen unit 11, and the effect of anticipatively preventing the cooling water from leaking into the furnace body to cause safety accidents due to the fact that the arc breaks through the protective screen unit 11 is achieved.
In particular, in view of the fact that the lower end surface of the shield unit 11 is the portion most prone to arc breakdown in the prior art, the shield insulating kit according to the above-described technical solution further enhances the performance of the lower end surface of the shield unit 11 against arc breakdown by providing the second mica plate 208 and the third mica plate 209 stacked between the first glass fiber cloth 203 and the second glass fiber cloth 205 in the horizontal structure 22 corresponding to the lower end surface of the shield unit 11.
In a preferred embodiment, the first glass fiber cloth 203 and the second glass fiber cloth 205 are alkali-free glass fiber cloth with a thickness of 0.4 mm.
In a preferred embodiment, the first mica plate 204 is a silicone mica plate with a thickness of 1mm, and the second mica plate 208 and the third mica plate 209 are both silicone mica plates with a thickness of 2 mm.
In a preferred embodiment, the first mica paper 201, the second mica paper 202, the third mica paper 206 and the fourth mica paper 207 are all silicone mica paper with a thickness of 0.25 mm.
On the other hand, in order to obtain the shield insulation sleeve, the process for manufacturing the shield insulation sleeve provided by the invention uses a steel die 3 to mold a plurality of layers of materials into the shield insulation sleeve, and as shown in fig. 5, the following steps are specifically adopted:
s01, paving the polyester film 200 in the die cavity 31 of the steel die 3;
s02, paving first mica paper 201 on the polyester film, and then coating high-temperature glue on the first mica paper 201;
s03, attaching second mica paper 202 to the first mica paper 201, and then coating high-temperature glue on the second mica paper 202;
s04, attaching the first glass fiber cloth 203 to the second mica paper 202, and then coating high-temperature glue on the first glass fiber cloth 203;
s04, attaching a first mica plate 204 corresponding to the vertical structure, a second mica plate 208 corresponding to the horizontal structure and a third mica plate 209 to the first fiberglass cloth 203, and then respectively coating high-temperature glue on the first mica plate 204, the second mica plate 208 and the third mica plate 209;
s05, attaching second fiberglass cloth 205 to the first mica plate 204, the second mica plate 208 and the third mica plate 209, and then coating high-temperature glue on the second fiberglass cloth 205;
s06, attaching third mica paper 206 to the second fiberglass cloth 205, and then coating high-temperature glue on the third mica paper 206;
s07-attaching a fourth mica paper 207 to the third mica paper 206;
s08-laying a polyester film 200' on the fourth mica paper 207;
s09-closing the steel die 3 to mold and solidify the first mica paper 201, the second mica paper 202, the first glass fiber cloth 203, the first mica plate 204, the second mica plate 208, the third mica plate 209, the second glass fiber cloth 205, the third mica paper 206 and the fourth mica paper 207 into a whole, and obtaining a blank after demolding;
s10, cutting and grinding the blank according to the design size of the finished product, and drilling a screw through hole to obtain the finished product of the shield insulation sleeve.
The significance of the step S01 and the step S08 of laying the mylar 200 and the mylar 200' is that the mylar is used to protect the mold, so as to facilitate demolding, and at the same time, the mylar can be used to make the surface of the shield insulation kit product more flat.
Preferably, in step S09, the steel die 3 is closed and then left standing for 40 minutes under pressure.
Preferably, the mass of the first mica paper 201, the second mica paper 202, the third mica paper 206 and the fourth mica paper 207 accounts for 45% of the total weight of the finished shield insulation kit, the mass of the first fiberglass cloth 203, the second fiberglass cloth 205 accounts for 20% of the total weight of the finished shield insulation kit, the mass of the first mica plate 204 accounts for 5% of the total weight of the finished shield insulation kit, the mass of the second mica plate 208 and the third mica plate 209 accounts for 20% of the total weight of the finished shield insulation kit, and the mass of the high-temperature glue coated on each layer accounts for 10% of the total weight of the finished shield insulation kit.
Preferably, in steps S02, S03, S06 and S07, the first mica paper 201, the second mica paper 202, the third mica paper 206 and the fourth mica paper 207 are folded and pressed corresponding to the junction corners of the vertical surface structure and the horizontal surface structure respectively to decoct and spread corresponding to the vertical surface structure and the horizontal surface structure respectively after being laid; and the first mica paper 201, the second mica paper 202, the third mica paper 206 and the fourth mica paper 207 respectively fold the area corresponding to the facade structure into a plurality of vertical folds to construct a radian matching with the facade structure. For ease of understanding, the first mica paper 201 is exemplified in fig. 6 as the above-mentioned pasting method, the first mica paper 201 is folded into a plurality of vertical folds 201' in the area corresponding to the facade structure to construct a curvature matching the facade structure.
Preferably, in steps S04 and S05, after the first fiberglass cloth 203 and the second fiberglass cloth 205 are laid, the first fiberglass cloth and the second fiberglass cloth are respectively folded corresponding to the junction corners of the vertical surface structure and the horizontal surface structure so as to be respectively applied and boiled corresponding to the vertical surface structure and the horizontal surface structure; the first glass fiber cloth 203 and the second glass fiber cloth 205 respectively divide the area corresponding to the horizontal plane structure into a plurality of radially extending cutting strips so as to obtain the flatness matched with the horizontal plane structure; and, the cloth strips made of the same material as the first glass fiber cloth 203 and the second glass fiber cloth 205 are respectively adopted to be coated in the area corresponding to the horizontal plane structure so as to shield the gap between the cutting strips. For the convenience of understanding, in fig. 7, the first glass fiber cloth 203 is taken as an example to exemplify the above-mentioned pasting method, and a cloth strip 203 ″ made of the same material as the first glass fiber cloth 203 is pasted in an area corresponding to the horizontal plane structure to shield the gap between the cut strips 203'.
The shield insulation external member obtained by the shield insulation external member manufacturing process provided by the invention is tested at the ambient temperature of 45-800 ℃ for a plurality of times, and the experimental result shows that the shield insulation external member provides reliable insulation protection for the lower end of the shield unit, and the effect of anticipatively preventing the cooling water from leaking into the furnace body to cause safety accidents due to the fact that electric arcs puncture the shield unit is realized.
It will be clear to a person skilled in the art that the scope of protection of the present invention is not limited to details of the foregoing illustrative embodiments, and that all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein by the appended claims without departing from the spirit or essential characteristics thereof.
Claims (9)
1. Shield insulation external member, its characterized in that:
the vertical surface structure and the horizontal surface structure are integrated by adopting multi-layer material mould pressing and curing, the vertical surface structure is an arc thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure is a fan-shaped annular thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure;
wherein, a plurality of screw through holes are arranged on the vertical surface structure along the radial direction;
the facade structure comprises a first mica paper, a second mica paper, a first glass fiber cloth, a first mica plate, a second glass fiber cloth, a third mica paper and a fourth mica paper which are sequentially stacked, wherein the layers are bonded through high-temperature glue;
the horizontal plane structure comprises first mica paper, second mica paper, first glass fiber cloth, second glass fiber cloth, third mica paper and fourth mica paper which are born in the vertical plane structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth, and all the layers are also attached through high-temperature glue.
2. The shield insulation kit of claim 1 wherein: the first glass fiber cloth and the second glass fiber cloth are alkali-free glass fiber cloth with the thickness of 0.4 mm.
3. The shield insulation kit of claim 1 wherein: the first mica plate is an organic silicon mica plate with the thickness of 1mm, and the second mica plate and the third mica plate are organic silicon mica plates with the thickness of 2 mm.
4. The shield insulation kit of claim 1 wherein: the first mica paper, the second mica paper, the third mica paper and the fourth mica paper are all organosilicon mica paper with the thickness of 0.25 mm.
5. A process for manufacturing a shield insulation sleeve, wherein a multi-layer material is molded into the shield insulation sleeve according to any one of claims 1 to 4 by using a steel mold, the process comprising the following steps:
s01, paving a polyester film in a die cavity of the steel die;
s02, paving first mica paper on the polyester film, and then coating high-temperature glue on the first mica paper;
s03, attaching second mica paper to the first mica paper, and then coating high-temperature glue on the second mica paper;
s04, attaching first glass fiber cloth to the second mica paper, and then coating high-temperature glue on the first glass fiber cloth;
s04, attaching a first mica plate corresponding to the vertical structure, a second mica plate corresponding to the horizontal structure and a third mica plate to the first fiberglass cloth, and then respectively coating high-temperature glue on the first mica plate, the second mica plate and the third mica plate;
s05, attaching second glass fiber cloth to the first mica plate, the second mica plate and the third mica plate, and then coating high-temperature glue on the second glass fiber cloth;
s06, attaching third mica paper to the second glass fiber cloth, and then coating high-temperature glue on the third mica paper;
s07, attaching a fourth mica paper to the third mica paper;
s08, paving a polyester film on the fourth mica paper;
s09-closing the die by a steel die to mold and solidify the first mica paper, the second mica paper, the first glass fiber cloth, the first mica plate, the second mica plate, the third mica plate, the second glass fiber cloth, the third mica paper and the fourth mica paper into a whole, and obtaining a blank after demolding;
s10, cutting and grinding the blank according to the design size of the finished product, and drilling a screw through hole to obtain the finished product of the shield insulation sleeve.
6. The process of claim 5, wherein in step S09, the steel mold is closed and then left for 40 minutes.
7. The process of claim 5, wherein the mass of the first mica paper, the second mica paper, the third mica paper and the fourth mica paper is 45% of the total weight of the finished shield insulation kit, the mass of the first fiberglass cloth and the second fiberglass cloth is 20% of the total weight of the finished shield insulation kit, the mass of the first mica plate is 5% of the total weight of the finished shield insulation kit, the mass of the second mica plate and the third mica plate is 20% of the total weight of the finished shield insulation kit, and the mass of the high-temperature glue applied to each layer is 10% of the total weight of the finished shield insulation kit.
8. The process of manufacturing a shield insulation kit according to claim 5, wherein in steps S02, S03, S06 and S07, the first mica paper, the second mica paper, the third mica paper and the fourth mica paper are folded and pressed corresponding to the intersection corners of the vertical structure and the horizontal structure respectively to be laid corresponding to the vertical structure and the horizontal structure respectively; and the first mica paper, the second mica paper, the third mica paper and the fourth mica paper respectively fold a plurality of vertical folds on the area corresponding to the facade structure so as to construct a radian matched with the facade structure.
9. The process of manufacturing a shield insulation kit according to claim 8, wherein in steps S04 and S05, the first glass fiber cloth and the second glass fiber cloth are folded and pressed corresponding to the junction corners of the vertical surface structure and the horizontal surface structure respectively to be applied corresponding to the vertical surface structure and the horizontal surface structure respectively; the first glass fiber cloth and the second glass fiber cloth respectively cut the area corresponding to the horizontal plane structure into a plurality of radially extending cutting strips so as to obtain the flatness matched with the horizontal plane structure; and moreover, cloth strips made of the same material as the first glass fiber cloth and the second glass fiber cloth are respectively adopted to be applied in the area corresponding to the horizontal plane structure so as to shield the gap between the cut strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111031077.1A CN113686160A (en) | 2021-09-03 | 2021-09-03 | Screen protection insulating sleeve and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111031077.1A CN113686160A (en) | 2021-09-03 | 2021-09-03 | Screen protection insulating sleeve and manufacturing process thereof |
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| CN113686160A true CN113686160A (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111031077.1A Pending CN113686160A (en) | 2021-09-03 | 2021-09-03 | Screen protection insulating sleeve and manufacturing process thereof |
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| CN1469513A (en) * | 2002-07-19 | 2004-01-21 | 唐民乐 | Design method of insulating ring |
| CN203274515U (en) * | 2013-05-16 | 2013-11-06 | 武汉钢铁(集团)公司 | Electrode seal structure of vacuum induction furnace |
| CN204955245U (en) * | 2015-09-23 | 2016-01-13 | 新誉轨道交通科技有限公司 | Insulated ring finishing die |
| CN205843341U (en) * | 2016-06-07 | 2016-12-28 | 中卫市茂烨冶金有限责任公司 | A kind of electrode structure of large-capacity ore furnace |
| CN206235170U (en) * | 2016-12-03 | 2017-06-09 | 姚建功 | The electrode assembly that a kind of high current under HTHP and vacuum environment is imported |
| CN110228211A (en) * | 2018-03-06 | 2019-09-13 | 株式会社斯巴鲁 | Preform shaping method, composite material and manufacturing process and airframe body |
| CN215725144U (en) * | 2021-09-03 | 2022-02-01 | 魏育军 | Screen protection insulating sleeve |
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2021
- 2021-09-03 CN CN202111031077.1A patent/CN113686160A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469513A (en) * | 2002-07-19 | 2004-01-21 | 唐民乐 | Design method of insulating ring |
| CN203274515U (en) * | 2013-05-16 | 2013-11-06 | 武汉钢铁(集团)公司 | Electrode seal structure of vacuum induction furnace |
| CN204955245U (en) * | 2015-09-23 | 2016-01-13 | 新誉轨道交通科技有限公司 | Insulated ring finishing die |
| CN205843341U (en) * | 2016-06-07 | 2016-12-28 | 中卫市茂烨冶金有限责任公司 | A kind of electrode structure of large-capacity ore furnace |
| CN206235170U (en) * | 2016-12-03 | 2017-06-09 | 姚建功 | The electrode assembly that a kind of high current under HTHP and vacuum environment is imported |
| CN110228211A (en) * | 2018-03-06 | 2019-09-13 | 株式会社斯巴鲁 | Preform shaping method, composite material and manufacturing process and airframe body |
| CN215725144U (en) * | 2021-09-03 | 2022-02-01 | 魏育军 | Screen protection insulating sleeve |
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