CN106643182A - High-temperature vacuum furnace water-cooling electrode - Google Patents
High-temperature vacuum furnace water-cooling electrode Download PDFInfo
- Publication number
- CN106643182A CN106643182A CN201510711954.8A CN201510711954A CN106643182A CN 106643182 A CN106643182 A CN 106643182A CN 201510711954 A CN201510711954 A CN 201510711954A CN 106643182 A CN106643182 A CN 106643182A
- Authority
- CN
- China
- Prior art keywords
- electrode
- water
- cooling
- electrode body
- cooling flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention belongs to the technical field of vacuum furnace equipment, and concretely relates to a high-temperature vacuum furnace water-cooling electrode, which comprises an electrode block, conductive copper belts, an electrode body, a water inlet pipe, a water inlet and outlet base, a water-cooling flange and right-angle connectors. The electrode body is fixedly arranged on the water-cooling flange; insulation sealing parts are arranged between the electrode body and the water-cooling flange; a cooling cavity is arranged inside the electrode body; the water inlet and outlet base is arranged at one end of the electrode body; the water inlet pipe is arranged on the water inlet and outlet base and is held in the cooling cavity of the electrode body; and the conductive copper belts are connected to two sides of the other end of the electrode body, and are connected with the electrode block through the right-angle connectors. The high-temperature vacuum furnace water-cooling electrode provided by the invention can be used at the temperature of 1,700 DEG C, can be used under the corrosive atmosphere, and is simple in structure, good in sealability, long in service life, and low in production cost.
Description
Technical field
The invention belongs to vacuum drying oven equipment technical field, specifically a kind of vacuum high temperature furnace water cooled electrode.
Background technology
Water cooled electrode is the port that vacuum drying oven connects stove internal heat generation body component, is in connection stove external power and stove
The critical component of heater element.With raising of the workpiece to vacuum drying oven operating temperature requirements, to vacuum drying oven water
Cold electrode is also correspondingly improved using temperature, and can the performance quality of water cooled electrode is directly connected to vacuum drying oven
Touch the mark requirement.
Existing water cooled electrode is only applicable to less than 1400 DEG C of vacuum drying oven, and can not be in aggressive atmosphere
Under use, once be contained within corrosive gas higher than this temperature or stove electrode will be caused to damage.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of vacuum high temperature furnace water cooled electrode.The electricity
Pole simple structure, good airproof performance, long service life, low production cost.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of vacuum high temperature furnace water cooled electrode, including electrode block, conducting copper belt, electrode body, water inlet pipe,
Influent-effluent base, water-cooling flange and angle coupling, wherein electrode body be fixedly mounted on the water-cooling flange,
And insulating and sealing member is provided between the electrode body and the water-cooling flange, set inside the electrode body
There is cooling chamber, the influent-effluent base is arranged on one end of the electrode body, and the water inlet pipe is arranged on described
On influent-effluent base and it is contained in the cooling chamber of the electrode body, the other end both sides point of the electrode body
The conducting copper belt is not connected with, the conducting copper belt is respectively by the angle coupling and the electrode block
It is connected.
The electrode body includes being provided with the cooling chamber vertically in electrode tip and electrode stem, the electrode stem,
One end of the electrode stem is threadedly coupled with the influent-effluent base, and the other end is fixedly connected with the electrode tip,
The both sides of the electrode tip are connected respectively with the conducting copper belt.
The shoulder hole coaxial with the cooling chamber of the electrode body, the water inlet pipe are provided with the influent-effluent base
It is inserted in the shoulder hole and is threadedly coupled with the outboard end of the shoulder hole, the influent-effluent base is provided with
The water seat apopore connected with the shoulder hole.
Insulating and sealing member between the electrode body and the water-cooling flange be insulation sleeve, the insulation sleeve
The first sealing ring is provided between the water-cooling flange, is arranged between the electrode body and the insulation sleeve
There is the second sealing ring.
The electrode stem of the electrode body is provided with external screw thread, and the electrode stem is inserted on the water-cooling flange
In the through hole being provided with and by electrode tip axial limiting, the electrode body is threadedly attached in the electricity
Hex nut in pole bar is fixed on the water-cooling flange, the hex nut and the water-cooling flange it
Between be provided with felt pad and packing ring, the felt pad is arranged between the water-cooling flange and packing ring.
The insulation sleeve and felt pad adopt polytetrafluoro material.
One end of the conducting copper belt is separately fixed at the both sides of the electrode tip of the electrode body by screw,
And be provided with plain washer, spring washer and pressing plate, the pressing plate be arranged on the conducting copper belt and plain washer it
Between.
The other end of the conducting copper belt is fixed on backing plate and by screw, plain washer, spring washer
And pressing plate is connected with the angle coupling, the conducting copper belt be arranged on the pressing plate and the backing plate it
Between.
Circumferentially arranged with water jacket on the sealing surface of the water-cooling flange, the water jacket outside passes through retaining ring sealing,
The opposite side of the water-cooling flange sealing surface is provided with the water inlet and delivery port connected with the water jacket.
The water-cooling flange is connected by bolt with body of heater electrode flange, the water-cooling flange and body of heater electrode
Electrode sealing ring is provided between flange mating surface.
Advantages of the present invention is with good effect：
The invention provides a kind of vacuum high temperature furnace water cooled electrode.The electrode uses temperature up to 1700 DEG C,
And can use under aggressive atmosphere, simple structure, good airproof performance, long service life, low production cost.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structural representation of electrode body in the present invention；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the structural representation of water-cooling flange in the present invention；
Fig. 5 is the top view of water-cooling flange in the present invention；
Fig. 6 is the structural representation of electrode block in the present invention；
Fig. 7 is A-A sectional views in Fig. 6.
In figure：1 is electrode block, and 2 is pressing plate, and 3 is conducting copper belt, and 4 is electrode body, and 5 are the first sealing
Circle, 6 is insulation sleeve, and 7 is felt pad, and 8 is packing ring, and 9 is hex nut, and 10 is water inlet pipe, and 11 are
Influent-effluent base, 12 is electrode sealing ring, and 13 is water-cooling flange, and 14 is the second sealing ring, and 15 is backing plate,
16 is angle coupling, and 17 is stud, and 18 is nut, and 19 is water seat delivery port, and 20 is back-up ring,
21 is baffle plate, and 22 is electrode tip, and 23 is electrode stem.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
As shown in figure 1, a kind of vacuum high temperature furnace water cooled electrode that the present invention is provided, including electrode block 1, lead
Electrolytic copper band 3, electrode body 4, water inlet pipe 10, influent-effluent base 11, water-cooling flange 13 and angle coupling 16,
Wherein electrode body 4 is fixedly mounted on the water-cooling flange 13 and the electrode body 4 and the water cooling
Insulating and sealing member is provided between blue 13, cooling chamber, the Inlet and outlet water are provided with inside the electrode body 4
One end that seat 11 is arranged on the electrode body 4, the water inlet pipe 10 is arranged on the influent-effluent base 11,
And be contained in the cooling chamber of the electrode body 4, the other end both sides of the electrode body 4 are connected to
One conducting copper belt 3, two conducting copper belts 3 respectively by an angle coupling 16 with
The electrode block 1 is connected.
As Figure 2-3, the electrode body 4 includes electrode tip 22 and electrode stem 23, the electrode stem
The cooling chamber, one end of the electrode stem 23 and the screw thread of the influent-effluent base 11 are provided with vertically in 23
Connection, the other end is fixedly connected with the electrode tip 22 by welding manner, and postwelding is to the electrode body 4
Cooling chamber in suppress, it is ensured that cooling cavity pressure 4kg/cm2, must not there is leakage in half an hour.The electrode
22 both sides are connected respectively with a conducting copper belt 3.
The shoulder hole coaxial with the cooling chamber of the electrode body 4 is provided with the influent-effluent base 11, it is described
Water inlet pipe 10 is inserted in the shoulder hole and is threadedly coupled with the outboard end of the shoulder hole, the Inlet and outlet water
Seat 11 is provided with the water seat apopore 19 connected with the shoulder hole, the water seat apopore 19 with it is described
Shoulder hole is vertical.Each threaded connection place can be using raw material band in case leak-stopping water.
Insulating and sealing member between the electrode body 4 and the water-cooling flange 13 is insulation sleeve 6, described
Insulation sleeve 6 is enclosed within the electrode stem 22 of the electrode body 4 and penetrates logical on the water-cooling flange 13
In hole, the first sealing ring 5, the electrode are provided between the insulation sleeve 6 and the water-cooling flange 13
The second sealing ring 14 is provided between body 4 and the insulation sleeve 6.In the present embodiment, the insulation sleeve 6
Cross section be T-type structure, the T-type structure is by electrode tip 22 and electrode stem 23 and the water-cooling flange
13 isolation, realize the purpose of insulation.The one side of the end shoulders of the T-type structure and the water-cooling flange
First sealing ring 5, the another side of the end shoulders of the T-type structure and the electricity are provided between 13
Second sealing ring 14 is provided between cartridge 22.
The electrode stem 23 of the electrode body 4 is provided with external screw thread, and the electrode stem 23 is inserted in the water
In the through hole that cold process orchid 13 is provided with and by the axial limiting of electrode tip 22, the electrode body 4 passes through
The hex nut 9 being threaded on the electrode stem 23 is fixed on the water-cooling flange 13, described
Felt pad 7 and packing ring 8 are provided between hex nut 9 and the water-cooling flange 13, the felt pad 7 sets
Put between the water-cooling flange 13 and packing ring 8.The insulation sleeve 6 and felt pad 7 adopt polytetrafluoro
Material.
One end of the conducting copper belt 3 is separately fixed at the electrode tip 22 of the electrode body 4 by screw
Both sides, and plain washer, spring washer and pressing plate 2 are provided with, the pressing plate 2 is arranged on the conducting copper belt 3
Between plain washer.The other end of the conducting copper belt 3 is fixed on backing plate 15 and by screw, flat
Packing ring, spring washer and pressing plate 2 are connected with the angle coupling 16, and the conducting copper belt 3 is arranged on
Between the pressing plate 2 and the backing plate 15.
In the present embodiment, the both sides symmetry direction of electrode tip 22 of the electrode body 4 is respectively equipped with two groups of screw threads
Hole (as shown in Figure 3), the electrode tip 22 is fixed on by soket head cap screw by the conducting copper belt 3
On each screwed hole of both sides, and plain washer, spring washer and pressing plate 2 are provided with, its center platen 2 is arranged on institute
State between conducting copper belt 3 and plain washer.The opposite side of the conducting copper belt 3 by soket head cap screw with it is described
Angle coupling 16 is connected, and is fixed on the backing plate 15 for being provided with screw buckle, and is provided with plain washer, spring
Packing ring and pressing plate 2, the angle coupling 16 and the conducting copper belt 3 be arranged on the pressing plate 2 with it is described
Between backing plate 15.The pressing plate 2 adopt stainless steel 304 material, to guarantee the conducting copper belt 3 with
Contact between the electrode body 4 and the angle coupling 16 good.
The conducting copper belt 3 is that the copper foil layer by thickness for 0.1mm is stacked, per group of conducting copper belt 3
There are 45 Copper Foils, the deflection of heater element can be offset by the pliability of Copper Foil.
The other end of the angle coupling 16 is connected by soket head cap screw with the electrode block 1, and is provided with flat
Packing ring, spring washer and pressing plate 2.As shown in fig. 6-7, the center of the electrode block 1 is provided with for clamping
The centre bore of heating element heater, symmetrical two parts are processed into by the electrode block 1 along the axis of centre bore,
The unthreaded hole vertical with centre bore is symmetrically arranged on two with centre bore in a portion, on another part
Two coaxial with two unthreaded holes respectively screwed holes are provided with, unthreaded hole is sequentially inserted into by stud 17
And in screwed hole, and fixed with spring washer and nut, to clamp heating element.The stud
17 adopt resistant to elevated temperatures 316 stainless steel, and above-mentioned soket head cap screw, plain washer, spring washer are
Stainless steel, the electrode block 1 adopts nickel material, and nickel is with respect to other conductive materials more resistant to high temperature and electricity
Resistance rate is sufficiently low, and resistivity varies with temperature little, is easy to processing, and price is relatively low.
As illustrated in figures 4-5, circumferentially arranged with water jacket on the sealing surface of the water-cooling flange 13, the water-cooled
The sealing surface opposite side of flange 13 is provided with the water inlet and delivery port connected with the water jacket.The water inlet
Baffle plate 21 is provided between delivery port, the baffle plate 21 is connected using welding manner with the water-cooling flange 13
Connect, for separating the water inlet and delivery port.The water jacket is externally provided with the back-up ring 20 for sealed water jacket,
The back-up ring 20 is connected with the water-cooling flange 13 using welding manner, and postwelding is suppressed into the water jacket,
Ensure pressure 4kg/cm in water jacket2, must not there is leakage in half an hour.
The water-cooling flange 13 is connected by bolt with body of heater electrode flange, the water-cooling flange 13 and stove
Electrode sealing ring 12 is provided between body electrode flange mating surface.
The present invention operation principle be：
During work, by the water inlet of influent-effluent base 11 and water-cooling flange 13 respectively to the electrode body 4
Cooling chamber and the water-cooling flange 13 water jacket in be filled with cooling water, to reduce electrode body 4 and water cooling
Temperature during blue 13 work, the cooling cavity outer wall of the electrode body 4 is thicker to be leaked so as to be not easily susceptible to corrosion
Water；In addition with heater element coupling part, set structure and temperature-resistant material can be under high-temperature vacuum
Work and less to resistivity effects.
The invention provides a kind of vacuum high temperature furnace water cooled electrode.The electrode uses temperature up to 1700 DEG C,
Can use under aggressive atmosphere, simple structure, good airproof performance, long service life, low production cost.
Claims (10)
1. a kind of vacuum high temperature furnace water cooled electrode, it is characterised in that including electrode block (1), conducting copper belt
(3), electrode body (4), water inlet pipe (10), influent-effluent base (11), water-cooling flange (13) and right angle
Joint (16), wherein electrode body (4) are fixedly mounted on the water-cooling flange (13) and the electricity
Insulating and sealing member, the electrode body (4) are provided between pole body (4) and the water-cooling flange (13)
Inside is provided with cooling chamber, and the influent-effluent base (11) is arranged on one end of the electrode body (4), described
Water inlet pipe (10) is arranged on the influent-effluent base (11) and is contained in the cold of the electrode body (4)
But in chamber, the other end both sides of the electrode body (4) are connected to the conducting copper belt (3), described
Conducting copper belt (3) is connected respectively by the angle coupling (16) with the electrode block (1).
2. the vacuum high temperature furnace water cooled electrode as described in claim 1, it is characterised in that the electrode body
(4) including electrode tip (22) and electrode stem (23), institute is provided with vertically in the electrode stem (23)
Cooling chamber is stated, one end of the electrode stem (23) is threadedly coupled with the influent-effluent base (11), another
End is fixedly connected with the electrode tip (22), the both sides of the electrode tip (22) respectively with the conduction
Copper strips (3) connects.
3. the vacuum high temperature furnace water cooled electrode as described in claim 2, it is characterised in that the Inlet and outlet water
The shoulder hole coaxial with the cooling chamber of the electrode body (4), the water inlet pipe (10) are provided with seat (11)
It is inserted in the shoulder hole and is threadedly coupled with the outboard end of the shoulder hole, the influent-effluent base (11)
It is provided with water seat apopore (19) connected with the shoulder hole.
4. the vacuum high temperature furnace water cooled electrode as described in claim 2, it is characterised in that the electrode body
(4) with the insulating and sealing member between the water-cooling flange (13) be insulation sleeve (6), the insulation sleeve
(6) the first sealing ring (5), the electrode body (4) are provided between the water-cooling flange (13)
The second sealing ring (14) is provided between the insulation sleeve (6).
5. the vacuum high temperature furnace water cooled electrode as described in claim 4, it is characterised in that the electrode body
(4) electrode stem (23) is provided with external screw thread, and the electrode stem (23) is inserted in the water-cooling flange
(13) in the through hole being provided with and by electrode tip (22) axial limiting, the electrode body (4) is led to
Cross the hex nut (9) being threaded on the electrode stem (23) and be fixed on the water-cooling flange (13)
On, it is provided with felt pad (7) and packing ring between the hex nut (9) and the water-cooling flange (13)
(8), the felt pad (7) is arranged between the water-cooling flange (13) and packing ring (8).
6. the vacuum high temperature furnace water cooled electrode as described in claim 5, it is characterised in that the insulation sleeve
(6) and felt pad (7) adopt polytetrafluoro material.
7. the vacuum high temperature furnace water cooled electrode as described in claim 2, it is characterised in that the conductive copper
One end of band (3) is separately fixed at the both sides of the electrode tip (22) of the electrode body (4) by screw,
And plain washer, spring washer and pressing plate (2) are provided with, the pressing plate (2) is arranged on the conducting copper belt (3)
Between plain washer.
8. the vacuum high temperature furnace water cooled electrode as described in claim 7, it is characterised in that the conductive copper
The other end of band (3) is fixed on backing plate (15) and by screw, plain washer, spring washer and pressure
Plate (2) is connected with the angle coupling (16), and the conducting copper belt (3) is arranged on the pressing plate
(2) between the backing plate (15).
9. the vacuum high temperature furnace water cooled electrode as described in claim 1, it is characterised in that the water cooling
Circumferentially arranged with water jacket on the sealing surface of blue (13), the water jacket outside is sealed by back-up ring (20),
The opposite side of water-cooling flange (13) sealing surface is provided with the water inlet and delivery port connected with the water jacket.
10. the vacuum high temperature furnace water cooled electrode as described in any one of claim 1-9, it is characterised in that institute
State water-cooling flange (13) to be connected with body of heater electrode flange by bolt, the water-cooling flange (13) and stove
Electrode sealing ring (12) is provided between body electrode flange mating surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711954.8A CN106643182B (en) | 2015-10-28 | 2015-10-28 | A kind of vacuum high temperature furnace water cooled electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711954.8A CN106643182B (en) | 2015-10-28 | 2015-10-28 | A kind of vacuum high temperature furnace water cooled electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106643182A true CN106643182A (en) | 2017-05-10 |
| CN106643182B CN106643182B (en) | 2019-05-14 |
Family
ID=58815979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510711954.8A Active CN106643182B (en) | 2015-10-28 | 2015-10-28 | A kind of vacuum high temperature furnace water cooled electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106643182B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097525A (en) * | 2020-09-09 | 2020-12-18 | 中国振华集团云科电子有限公司 | Atmosphere tube furnace cooling device and cooling method |
| CN113564718A (en) * | 2021-07-07 | 2021-10-29 | 中国电子科技集团公司第四十八研究所 | Water-cooled electrode for semiconductor equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069638U (en) * | 1990-04-21 | 1991-01-16 | 张玉祥 | Water-cooling complex electrode |
| JP3871172B2 (en) * | 1998-10-05 | 2007-01-24 | ラサ商事株式会社 | Molybdenum electrode body used in the former furnace attached to the electric melting furnace |
| CN201032395Y (en) * | 2007-05-10 | 2008-03-05 | 上海晨华电炉有限公司 | Low voltage great current water cooling electrode for vacuum furnace |
| CN102519266A (en) * | 2011-12-14 | 2012-06-27 | 张家港圣汇气体化工装备有限公司 | Water-cooled electrode of high temperature vacuum furnace |
| CN102809298A (en) * | 2012-09-13 | 2012-12-05 | 无锡四方集团真空炉业有限公司 | Water-cooled electrode device for vacuum furnace |
| CN102954698A (en) * | 2012-10-31 | 2013-03-06 | 西安合元冶金设备工程有限责任公司 | High titanium slag electrode holder |
| CN205119841U (en) * | 2015-10-28 | 2016-03-30 | 沈阳沈真真空技术有限责任公司 | High temperature vacuum furnace water cooled electrode |
-
2015
- 2015-10-28 CN CN201510711954.8A patent/CN106643182B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069638U (en) * | 1990-04-21 | 1991-01-16 | 张玉祥 | Water-cooling complex electrode |
| JP3871172B2 (en) * | 1998-10-05 | 2007-01-24 | ラサ商事株式会社 | Molybdenum electrode body used in the former furnace attached to the electric melting furnace |
| CN201032395Y (en) * | 2007-05-10 | 2008-03-05 | 上海晨华电炉有限公司 | Low voltage great current water cooling electrode for vacuum furnace |
| CN102519266A (en) * | 2011-12-14 | 2012-06-27 | 张家港圣汇气体化工装备有限公司 | Water-cooled electrode of high temperature vacuum furnace |
| CN102809298A (en) * | 2012-09-13 | 2012-12-05 | 无锡四方集团真空炉业有限公司 | Water-cooled electrode device for vacuum furnace |
| CN102954698A (en) * | 2012-10-31 | 2013-03-06 | 西安合元冶金设备工程有限责任公司 | High titanium slag electrode holder |
| CN205119841U (en) * | 2015-10-28 | 2016-03-30 | 沈阳沈真真空技术有限责任公司 | High temperature vacuum furnace water cooled electrode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097525A (en) * | 2020-09-09 | 2020-12-18 | 中国振华集团云科电子有限公司 | Atmosphere tube furnace cooling device and cooling method |
| CN113564718A (en) * | 2021-07-07 | 2021-10-29 | 中国电子科技集团公司第四十八研究所 | Water-cooled electrode for semiconductor equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106643182B (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102519266B (en) | Water-cooled electrode of high temperature vacuum furnace | |
| CN102679063A (en) | High-performance electrical isolation flange device resisting high temperature and high pressure | |
| CN106076745B (en) | A kind of Rapid hot-melting glue rifle | |
| CN106643182A (en) | High-temperature vacuum furnace water-cooling electrode | |
| CN201799733U (en) | Directly-heated vacuum welding furnace | |
| CN202329218U (en) | Water-cooled electrode of high temperature vacuum furnace | |
| CN102809298A (en) | Water-cooled electrode device for vacuum furnace | |
| CN205119841U (en) | High temperature vacuum furnace water cooled electrode | |
| CN202770221U (en) | Vacuum furnace water cooling electrode device | |
| WO2023231927A1 (en) | Electrode device, heater power supply structure, and furnace bottom structure of single crystal furnace | |
| CN202733245U (en) | Novel high temperature resistance electric-insulation flange device | |
| CN203936512U (en) | Resistance welder intermediate frequency large power assembly | |
| CN105554927B (en) | Far infrared carbon fiber electric heating tube | |
| CN203003361U (en) | Pipeline preheater | |
| CN102949967A (en) | Pinene pyrolysis device | |
| CN111006515B (en) | Electrode assembly and high-temperature vacuum furnace | |
| CN101804489B (en) | Direct heating type vacuum welding furnace | |
| CN207991287U (en) | Miniature water cooling can adjust electrode, vacuum drying oven | |
| CN210154409U (en) | Round block hole type silicon carbide heat exchanger | |
| CN208022704U (en) | A kind of high concentrition ozone generator | |
| CN109661045B (en) | Manufacturing method of graphene heating plate and graphene heating plate | |
| CN202329215U (en) | Electricity leading system structure of high temperature resistance furnace | |
| CN201940736U (en) | Sliver head plasma cutting electrode | |
| CN206247876U (en) | A kind of Elema produces protection device | |
| CN201858860U (en) | Water-cooled conductive flange for vacuum consumable electric arc furnace chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |