CN109551067B - spark machine electrode - Google Patents
spark machine electrode Download PDFInfo
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- CN109551067B CN109551067B CN201910059425.2A CN201910059425A CN109551067B CN 109551067 B CN109551067 B CN 109551067B CN 201910059425 A CN201910059425 A CN 201910059425A CN 109551067 B CN109551067 B CN 109551067B
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- electrode
- rod
- spark machine
- electrode rod
- tip
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- 239000011148 porous material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 5
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 230000007547 defect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 7
- 239000007772 electrode material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
- B23H1/06—Electrode material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Spark Plugs (AREA)
- Discharge Heating (AREA)
Abstract
The invention discloses a spark machine electrode. The spark machine electrode includes: the electrode rod, connecting piece and electrode tip, the electrode tip pass through the connecting piece with the electrode rod links to each other. Compared with the spark machine electrode obtained by welding the traditional electrode rod and the electrode head, the spark machine electrode has the advantages that the manufacturing method is simpler, the production cost is lower, and the problems of reduced quality, scrapping and the like of the spark machine electrode caused by welding defects are effectively avoided. In addition, the spark machine electrode is designed by adopting the modularized electrode rod and the electrode tip which are connected by the connecting piece, so that the electrode tip can be easily detached from the electrode rod, the rapid replacement of the electrode tip is realized, the electrode rod does not need to be replaced, and the utilization rate of the electrode rod is effectively improved.
Description
Technical Field
The invention relates to the field of powder metallurgy, in particular to a spark machine electrode.
Background
In the powder metallurgy die processing process, a spark machine electrode (spark electrode) is processed by a machine tool such as a processing center and wire cutting, and then the spark machine electrode is processed and molded by a spark molding machine. It can be said that the spark machine electrode is an indispensable part of the mould production process, and the quality of the spark machine electrode will directly affect the quality of the mould.
The electrode of the spark machine comprises an electrode rod and an electrode head. In the traditional spark machine electrode manufacturing process, the electrode rod and the electrode material (electrode tip) are welded together by brazing, the welding process comprises the steps of putting a copper welding rod on the electrode material, melting the copper welding rod at high temperature to form a molten pool, putting the electrode rod, cooling and solidifying the molten pool, connecting the electrode rod with the electrode tip, and using the electrode rod after the workpiece is completely cooled. However, the high temperature in the welding process easily generates residual stress on the electrode material, has a certain influence on subsequent processing, is difficult to grasp in the welding process, and easily generates phenomena such as infirm welding (cold joint, air holes), deformation of the electrode rod and the like after welding, and easily generates phenomena such as scrapping of the electrode of the spark machine due to resonance in the subsequent processing.
Thus, the existing spark machine electrodes remain to be improved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the invention is to propose a spark machine electrode. The electrode of the spark machine is connected with the electrode rod and the electrode head through the connecting piece, and the manufacturing method is simple and the quality is stable and reliable.
In one aspect of the invention, a spark machine electrode is provided. According to an embodiment of the present invention, the spark electrode includes: the electrode rod, connecting piece and electrode tip, the electrode tip pass through the connecting piece with the electrode rod links to each other. Compared with the spark machine electrode obtained by welding the traditional electrode rod and the electrode head, the spark machine electrode has the advantages that the manufacturing method is simpler, the production cost is lower, and the problems of reduced quality, scrapping and the like of the spark machine electrode caused by welding defects are effectively avoided. In addition, the spark machine electrode is designed by adopting the modularized electrode rod and the electrode tip which are connected by the connecting piece, so that the electrode tip can be easily detached from the electrode rod, the rapid replacement of the electrode tip is realized, the electrode rod does not need to be replaced, and the utilization rate of the electrode rod is effectively improved.
In addition, the spark machine electrode according to the above embodiment of the present invention may have the following additional technical features:
in some embodiments of the invention, the electrode rod and the electrode head are each independently prismatic or cylindrical.
In some embodiments of the present invention, a first hole is provided in the electrode rod, a second hole is provided in the electrode head, and the connecting piece is provided in the first hole and the second hole. Thus, the stability of the connection between the electrode rod and the electrode tip can be further improved.
In some embodiments of the invention, the connector is a screw, and the second bore has a threaded structure therein. Therefore, the electrode rod is connected with the electrode head through the screw rod, and the connection stability of the electrode rod and the electrode head can be further improved.
In some embodiments of the invention, the electrode rod has a length of 68 to 72 millimeters.
In some embodiments of the invention, the screw is an M6 screw. Thus, the stability of the connection between the electrode rod and the electrode tip can be further improved.
In some embodiments of the invention, the portion of the screw located in the first bore is 15 to 20 millimeters in length and the portion of the screw located in the second bore is 8 to 10 millimeters in length. Thus, the stability of the connection between the electrode rod and the electrode tip can be further improved.
In some embodiments of the present invention, the electrode tip is provided with a positioning groove, and the electrode rod is provided with a protruding structure matched with the positioning groove. Thus, the stability of the connection between the electrode rod and the electrode tip can be further improved.
In some embodiments of the invention, the electrode rod is formed from a die steel material.
In some embodiments of the invention, the electrode tip is formed of a tungsten copper alloy.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a spark machine electrode according to one embodiment of the invention;
FIG. 2 is a schematic diagram of a spark machine electrode made by a conventional welding process;
FIG. 3 is a schematic view of a spark machine electrode according to another embodiment of the present invention;
FIG. 4 is a schematic view of the structure of an electrode rod in a spark machine electrode according to one embodiment of the invention;
FIG. 5 is a schematic view of an alternative view of an electrode rod in a spark machine electrode in accordance with one embodiment of the invention;
FIG. 6 is a schematic view of the structure of an electrode tip in a spark machine electrode according to one embodiment of the invention;
fig. 7 is a schematic diagram of the structure of an electrode tip from another perspective in a spark machine electrode according to one embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the research of the spark machine electrode for preparing the powder metallurgy die, the inventor finds that in the traditional spark machine electrode manufacturing process, an electrode rod and an electrode material (electrode tip) are welded together by brazing, and the traditional spark machine electrode structure is shown in fig. 2 (in fig. 2, 1 is the electrode rod, 2 is a welding position, and 3 is the electrode tip). The welding process includes the steps of putting copper welding rods on electrode materials, melting the copper welding rods at high temperature to form a molten pool, putting electrode rods on the molten pool, cooling and solidifying the molten pool, jointing the electrode rods with electrode heads, and using the cooled workpiece after the workpiece is completely cooled. However, the high temperature in the welding process easily generates residual stress on the electrode material, has a certain influence on subsequent processing, is difficult to grasp in the welding process, and easily generates phenomena such as infirm welding (cold joint, air holes), deformation of the electrode rod and the like after welding, and easily generates phenomena such as scrapping of the electrode of the spark machine due to resonance in the subsequent processing.
In view of this, in one aspect of the invention, the invention proposes a spark machine electrode. According to an embodiment of the present invention, referring to fig. 1, the spark machine electrode includes: an electrode rod 100, a connecting member 200, and an electrode tip 300. Wherein the electrode tip 300 is connected to the electrode rod 100 through the connection member 200.
Compared with the spark machine electrode obtained by welding the traditional electrode rod and the electrode head, the spark machine electrode provided by the embodiment of the invention has the advantages that the manufacturing method is simpler, the production cost is lower, and the problems of reduced quality, scrapping and the like of the spark machine electrode caused by welding defects are effectively avoided. In addition, the spark machine electrode is designed by adopting the modularized electrode rod and the electrode tip which are connected by the connecting piece, so that the electrode tip can be easily detached from the electrode rod, the rapid replacement of the electrode tip is realized, the electrode rod does not need to be replaced, and the utilization rate of the electrode rod is effectively improved.
The spark machine electrode according to the embodiment of the present invention is described in further detail below with further reference to fig. 3 to 7.
According to the embodiment of the invention, the specific shapes of the electrode rod and the electrode tip are not particularly limited, and a person skilled in the art can select according to the actual needs of the subsequent process, in other words, the electrode rod and the electrode tip with different shapes can be connected through the connecting piece by adopting the technical scheme of the invention. According to a specific example of the present invention, the electrode rod and the electrode tip may each be independently prismatic or cylindrical in order to be suitable for the needs of different mold production.
The schematic structural views of the electrode rod 100 at different viewing angles are shown in fig. 4 and 5, respectively, the schematic structural views of the electrode tip 300 at different viewing angles are shown in fig. 6 and 7, respectively, and in fig. 4 to 7, a cylindrical electrode is taken as an example. According to an embodiment of the present invention, the electrode rod 100 is provided with a first hole (not shown in the drawings), the electrode head 300 is provided with a second hole 310, and the connection member 200 is provided with the first hole and the second hole. Specifically, after the electrode rod 100 is perforated in the radial direction, a portion of the connection member 200 is fixed in the first hole, and another portion of the connection member 200 protrudes out of the electrode rod 100. The portion of the protruding electrode rod 100 is fixed in the second hole of the electrode head 300 through the connection member 200, thereby achieving connection fixation of the electrode rod 100 and the electrode head 300. This can further improve the stability of the connection between the electrode rod 100 and the electrode tip 300.
According to an embodiment of the present invention, the connection member 200 may be a screw, and the second hole of the electrode tip 300 has a screw structure therein. Specifically, after the screw is fixed in the electrode rod 100, the threaded portion of the screw protrudes out of the electrode rod 100 and is fixed in the second hole through threaded connection, so that the electrode rod 100 and the electrode tip 300 are connected and fixed. In actual production, the cold working mode of connecting the electrode rod with the electrode head by using the screw rod as a connecting piece can effectively avoid the problems of reduced electrode quality, scrapping and the like of the spark machine caused by welding defects. Meanwhile, the electrode rod in the spark machine electrode is usually a standard clamp and can be recycled, and the electrode rod and the electrode head can be quickly replaced in a modularized mode by adopting the screw rod as a connecting piece for connecting the electrode rod and the electrode head, so that the utilization rate of the electrode rod is improved. In addition, compared with the spark machine electrode manufactured by traditional welding, the electrode rod is connected with the electrode head by the screw rod, the subsequent process can be carried out without waiting for cooling of a weldment, and the production efficiency is remarkably improved.
According to one specific example of the present invention, the connector 200 may employ a hexagonal screw. The hexagon socket screw is more easily fixed in the electrode rod 100, and thus, the connection stability of the electrode rod 100 and the electrode tip 300 is better.
According to an embodiment of the present invention, the length of the electrode rod 100 may be 68 to 72 mm. The length of the electrode rod in the spark machine electrode is shorter than that of the electrode rod in the traditional spark machine electrode. The inventors found in experiments that if the electrode rod length is too large, resonance may occur during milling due to the electrode being too large in size, resulting in rejection of the electrode. By controlling the length of the electrode rod to be 70+/-2 millimeters, the length of the electrode rod can be ensured to meet the actual production requirement, the resonance of the electrode in the milling process can be effectively reduced, and the yield is improved.
The specifications of the above screw are not particularly limited according to the embodiment of the present invention, and may be selected according to actual needs by those skilled in the art. According to a preferred embodiment of the present invention, the screw may be an M6 screw. The inventors found that if the screw gauge is too small, it is difficult to stably fix the electrode tip to the electrode rod. If the screw specification is too large, more space is required to be processed on the electrode tip and the electrode rod to accommodate the screw, so that the sizes of the electrode rod and the electrode tip are correspondingly reduced, and the production requirements cannot be met. By adopting the screw rod with the size as the connecting piece, the stable connection of the electrode rod and the electrode head can be ensured, and the sizes of the electrode rod and the electrode head can be ensured to meet the production requirement. Meanwhile, the electrode rod and the electrode head are simpler and more convenient to process.
According to an embodiment of the present invention, the length of the portion of the screw located in the first channel may be 15 to 20 mm, and the length of the portion of the screw located in the second channel may be 8 to 10 mm. The majority of the screw is located in the first bore of the electrode rod 100, while the portion located in the second bore is mainly used for fixing the electrode head 300. The length of the part of the screw rod positioned in the first pore canal is controlled to be 15-20 mm, so that the stability of the screw rod fixed in the electrode rod 100 can be further improved, the electrode rod part is a standard clamp, the electrode rod can be recycled, and the electrode rod does not need to be replaced frequently. By controlling the length of the portion of the screw rod located in the second hole to be 8-10 mm, the electrode tip 300 can be fastened to the electrode rod 100 through a short stroke. If the length of the portion of the screw located in the second hole is too long, the replacement efficiency of the electrode tip 300 is reduced; and if the length of the portion of the screw located in the second duct is too short, it is difficult to secure the stability of the fixation of the electrode head.
According to an embodiment of the present invention, referring to fig. 4 and 6, the electrode tip 300 is provided with a positioning groove 320, and the electrode rod 100 is provided with a protrusion structure 120 matched with the positioning groove 320. The stability of the connection of the electrode rod with the electrode tip can be further improved by forming the protrusion structure 120 and the positioning groove 320 on the electrode rod 100 and the electrode tip 300, respectively. Meanwhile, the positioning groove 320 is utilized to position, so that the replacement efficiency of the electrode tip 300 can be further improved.
According to the embodiment of the present invention, the material of the electrode rod is not particularly limited, and one skilled in the art may select according to actual needs. According to a preferred embodiment of the present invention, the electrode rod may be formed of a die steel material. The material can meet the requirements of the spark machine electrode process, and is easier to process, so that a connecting piece (such as a screw rod) is arranged in the electrode rod.
According to an embodiment of the present invention, the electrode tip may be formed of a tungsten copper alloy. Tungsten copper alloy can meet the electrode process requirements of the spark machine and is easy to process so as to be connected with an electrode rod through a connecting piece (such as a screw rod).
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not limiting in any way.
Examples
The cylindrical spark machine electrode was machined as follows:
(1) Machining an electrode rod according to the structure shown in fig. 4 and 5, wherein the outer diameter of the electrode rod is the standard clamp size;
(2) Machining a tungsten copper alloy electrode tip according to the structure shown in fig. 6 and 7, and forming a positioning groove and threads on the electrode tip;
(3) The electrode rod and the electrode tip are connected through the internal hexagonal screw rod, and the electrode rod and the electrode tip are fastened with proper torque by using a torque wrench.
The actual processing confirms that the spark machine electrode connected by the hexagon screw rod is not scrapped due to the processing reason. The production cost of the product is low, and the production requirement is met.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (3)
1. A spark machine electrode, comprising: the electrode comprises an electrode rod, a connecting piece and an electrode head, wherein the electrode head is connected with the electrode rod through the connecting piece;
the electrode rod and the electrode head are respectively and independently prismatic or cylindrical;
the electrode rod is internally provided with a first pore canal, the electrode head is internally provided with a second pore canal, and the connecting piece is arranged in the first pore canal and the second pore canal;
the connecting piece is a screw rod, and a thread structure is arranged in the second pore canal;
the length of the electrode rod is 68-72 mm;
the screw is an M6 screw;
the length of the part of the screw rod positioned in the first pore canal is 15-20 mm, and the length of the part of the screw rod positioned in the second pore canal is 8-10 mm;
the electrode tip is provided with a positioning groove, and the electrode rod is provided with a protruding structure matched with the positioning groove.
2. The spark machine electrode of claim 1 wherein said electrode rod is formed from a die steel material.
3. The spark electrode of claim 1 wherein said electrode tip is formed of a tungsten copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059425.2A CN109551067B (en) | 2019-01-22 | 2019-01-22 | spark machine electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059425.2A CN109551067B (en) | 2019-01-22 | 2019-01-22 | spark machine electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109551067A CN109551067A (en) | 2019-04-02 |
| CN109551067B true CN109551067B (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059425.2A Active CN109551067B (en) | 2019-01-22 | 2019-01-22 | spark machine electrode |
Country Status (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1406473A1 (en) * | 2002-10-04 | 2004-04-07 | Sgl Carbon Ag | A composite prebaked carbon electrode intended to be used in electric arc furnaces |
| CN201830490U (en) * | 2010-09-27 | 2011-05-11 | 山西太钢不锈钢股份有限公司 | Recycled graphite electrode |
| CN202639636U (en) * | 2012-03-31 | 2013-01-02 | 福建福耀汽车零部件有限公司 | Spot-welding contact point electrode special for vehicle glass bracket |
| CN204818469U (en) * | 2015-07-16 | 2015-12-02 | 重庆凌云汽车零部件有限公司 | Be used for split type electrode structure of welded |
| CN205258624U (en) * | 2015-12-22 | 2016-05-25 | 天津市高仕睿联科技有限公司 | Removable electrode |
| CN210024002U (en) * | 2019-01-22 | 2020-02-07 | 崇义章源钨业股份有限公司 | Spark machine electrode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2026907B1 (en) * | 2006-02-15 | 2010-11-17 | selFrag AG | Working electrode for an electrodynamic fragmenting installation |
-
2019
- 2019-01-22 CN CN201910059425.2A patent/CN109551067B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1406473A1 (en) * | 2002-10-04 | 2004-04-07 | Sgl Carbon Ag | A composite prebaked carbon electrode intended to be used in electric arc furnaces |
| CN201830490U (en) * | 2010-09-27 | 2011-05-11 | 山西太钢不锈钢股份有限公司 | Recycled graphite electrode |
| CN202639636U (en) * | 2012-03-31 | 2013-01-02 | 福建福耀汽车零部件有限公司 | Spot-welding contact point electrode special for vehicle glass bracket |
| CN204818469U (en) * | 2015-07-16 | 2015-12-02 | 重庆凌云汽车零部件有限公司 | Be used for split type electrode structure of welded |
| CN205258624U (en) * | 2015-12-22 | 2016-05-25 | 天津市高仕睿联科技有限公司 | Removable electrode |
| CN210024002U (en) * | 2019-01-22 | 2020-02-07 | 崇义章源钨业股份有限公司 | Spark machine electrode |
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| Publication number | Publication date |
|---|---|
| CN109551067A (en) | 2019-04-02 |
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