CN103722300B - Carbon arc gouge carbon rod - Google Patents
Carbon arc gouge carbon rod Download PDFInfo
- Publication number
- CN103722300B CN103722300B CN201210381021.3A CN201210381021A CN103722300B CN 103722300 B CN103722300 B CN 103722300B CN 201210381021 A CN201210381021 A CN 201210381021A CN 103722300 B CN103722300 B CN 103722300B
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- China
- Prior art keywords
- carbon rod
- carbon
- aluminium
- unit
- openend
- 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.)
- Expired - Fee Related
Links
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 112
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004411 aluminium Substances 0.000 claims abstract description 37
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000007767 bonding agent Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000002006 petroleum coke Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 22
- 239000002184 metal Substances 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000004020 conductor Substances 0.000 abstract description 5
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000010891 electric arc Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012407 engineering method Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008034 disappearance Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0211—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in cutting
- B23K35/0216—Rods, electrodes, wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/228—Selection of materials for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Discharge Heating (AREA)
Abstract
The present invention relates to a kind of carbon arc gouge carbon rod, aluminum or aluminum alloy is adopted to be main conductive material, comprise a carbon rod unit and one aluminium/aluminium alloy unit, wherein, carbon rod unit has the body of a long strip type, and body center hollow out forms a central part, this central part forms the first openend in body first end, and extend to form the second openend towards body second end, and aluminium/aluminium alloy unit utilizes pressure to inject central part by the second openend of carbon rod unit with the liquid condition of melting, and after cooling curing, a capped section is formed in body central portion, separately form one expose section by body second openend is outwardly.By this, can reduce conventional aluminum meltallizing be combined with carbon rod needed for energy ezpenditure, and when improving meltallizing, the adhesion amount of metal ejection is few, and the uppity problem of layer thickness uniformity, separately the manufacturing man-hours of metal meltallizing can be shortened, reduce metal consumption, allow manufacturing cost reduce.
Description
Technical field
The present invention is about a kind of carbon rod being used in electric arc fluting processing method, and espespecially a kind of is that main conductive material is to replace the carbon arc gouge carbon rod of electro-coppering in conjunction with aluminum or aluminum alloy.
Background technology
The carbon rod of existing electric arc fluting processing on the market at present, main is all use electro-coppering as the main conductive material of carbon arc gouge carbon rod, refer to shown in Fig. 1, traditional carbon arc gouge carbon rod (GougingCarbon) is for carbon rod 10 surface is through after the plating of cooperation copper coin 11, coating forms a copper coating 12, reduce electrode bar resistance and use the high electric current of conduction generation required for electric arc, but the smog that copper produces when high-temp combustion is by harmful.
In addition, existing electro-coppering processing procedure produces a large amount of copper ions waste water and plating produces sour gas, easily cause the heavy metal pollution of water quality, soil and air, therefore corresponding environmental protection equipment must be set, but, day by day promote instantly in environmental consciousness, will the surging gradually of manufacturing cost be caused.
Because traditional electrical copper facing mode has the disappearance of harmful to human, and aluminium cannot be combined with carbon rod in the mode of plating, therefore existing meltallizing engineering method utilize high temperature by aluminium fusing be sprayed at carbon-point surface after, impose close to melting temperature remelting reprocessing again, the energy consumed is very large, and it is very inconvenient to use.
Therefore, develop a kind of aluminum carbon arc gouge carbon rod (GougingCarbon) at present, its master utilizes the mode of meltallizing that aluminium is coated in carbon rod surface, then to sinter below melting point metal.But the aluminium of traditional meltallizing engineering method can cover few at the dose,surface of carbon rod, often cause waste of material, and the poor resistance of intermetallic adherence that aluminium is easily oxidized coating is higher, cause electrode bar consumption quick service life low, and add and again must sinter that to cause the energy to consume less economical.
But, owing to facing difficulty as the aforementioned using aluminium as conductive material, therefore have people to develop to use the method for extrusion molding, the peripheral coating of conductive metal with Delanium be main material and bonding agent (coal tar, pitch) mix shaping after, with the temperature below melting point metal not active environment under sinter.But because existing carbon rod electrode sintering must reach more than 1000 DEG C high temperature, exceed the fusing point of aluminium and most of metallic, if the carbon rod resistance value become with low-temperature sintering is higher, and the not active environment sintering condition cost of filling inert gas is high and cannot continous way produce.
In addition, also someone develops and uses metal bar to insert with the following temperature sintering of melting point metal after in carbon rod, but because method is not because reaching melting point metal, therefore between metal and carbon rod, have the problem of adherence deficiency.Because current existing carbon stick still has aforementioned many disappearances, therefore the making and the real necessity having improvement innovation of structure of traditional carbon stick.
Summary of the invention
Main purpose of the present invention, aim to provide a kind of carbon arc gouge carbon rod utilizing aluminum or aluminum alloy replacement electro-coppering to become main conductive material, and enter carbon rod inside with molten condition pressure injection, reduce conventional aluminum meltallizing be combined with carbon rod needed for energy ezpenditure, and the few and uppity problem of layer thickness uniformity of adhesion amount of metal ejection when improving meltallizing.
Secondary objective of the present invention is that high light, noise and the metallic dust avoiding producing in traditional meltallizing process etc. pollutes and impacts human body and environment, and the manufacturing man-hours of metal meltallizing can be allowed to shorten, and reduces metal wastage, allows manufacturing cost significantly reduce.
For reaching described object, the present invention comes in conjunction with a carbon rod unit by one aluminium/aluminium alloy unit, above-mentioned carbon rod unit has the body of a long strip type, and form a central part in above-mentioned body center hollow out, above-mentioned central part forms one first openend in body first end, and extend to form one second openend towards above-mentioned body second end, above-mentioned aluminium/aluminium alloy single then utilizes pressure to inject central part by the second openend of above-mentioned carbon rod unit with the liquid condition of melting, after above-mentioned aluminium/aluminium alloy unit cooling curing, central part in above-mentioned body is formed a capped section, and expose section by the second outwardly shape in openend of above-mentioned body in one-tenth one, wherein, the resistance of above-mentioned carbon arc gouge carbon rod is 0.1 ~ 1.0m Ω-cm, the above-mentioned length exposing section is set to 2 ~ 4mm.
Carbon rod unit of the present invention is mixed by Delanium, petroleum coke, carbon black and bonding agent, and shaping and burn till through more than 1000 DEG C high temperature with extrusion molding machine; The density of above-mentioned carbon rod unit is between 1.76 ~ 1.84g/cm
3, structural strength is between 500 ~ 850kgf/cm
2.And the fine aluminium content of above-mentioned aluminium/aluminium alloy unit must reach more than 80wt%; And the percentage by weight of above-mentioned aluminium/aluminium alloy unit accounts for 10 ~ 40% of whole carbon arc gouge carbon rod.
Feature of the present invention is: aluminium/aluminium alloy unit is entered carbon rod inside center portion with molten condition pressure injection, reduce conventional aluminum meltallizing be combined with carbon rod needed for energy ezpenditure, and the few and uppity problem of layer thickness uniformity of adhesion amount of metal ejection when can improve meltallizing.In addition, the pressure injection process of subsequent applications can not produce the pollutions such as high light, noise and metallic dust and impact human body and environment, and the manufacturing man-hours that aluminium can be allowed to be combined with carbon rod shortens, and reduces metal wastage, allows manufacturing cost significantly reduce.
Accompanying drawing explanation
Fig. 1 is that known carbon rod is in the copper-plated schematic diagram of surface electrical;
Fig. 2 is the stereogram of carbon arc gouge carbon rod of the present invention;
Fig. 3 is the sectional drawing of Fig. 2;
Fig. 4 is the exploded view of Fig. 3;
Fig. 5 is the schematic diagram that aluminium of the present invention/aluminium alloy pressure injection enters carbon rod: and
Fig. 6 is the schematic diagram that carbon arc gouge carbon rod of the present invention is applied to the processing of electric arc fluting.
[primary clustering symbol description]
10---carbon rod 211---body
11---copper coin 212---central part
12---copper coating 213---first openend
20---carbon arc gouge carbon rod 214---second openend
21---carbon rod unit 22---aluminium/aluminium alloy unit
221---is capped section 32---pressure injection piston
222---exposes section 40---metal material
30---mould 41---spray welding gun
31---makes space
Detailed description of the invention
For ease of the understanding that further has darker one deck clearly full and accurate to structure of the present invention, use and feature thereof and understanding, now enumerate preferred embodiment, coordinate accompanying drawing to be described in detail as follows:
Refer to shown in Fig. 2 to Fig. 4, in a preferred embodiment, carbon arc gouge carbon rod 20 of the present invention mainly formed with a carbon rod unit 21 and one aluminium/aluminium alloy unit 22 two parts.
Above-mentioned carbon rod unit 21 has the round body of a strip 211, and form a columned central part 212 in the central hollow out of above-mentioned body 211, above-mentioned central part 212 in body 211 first end (i.e. head end) formed one with the first openend 213 of ft connection, and form the second openend 214 of another and ft connection in above-mentioned body 211 second end (i.e. tail end).
Above-mentioned aluminium/aluminium alloy unit 22 utilizes pressure, central part 212 is injected by above-mentioned carbon rod unit 21 openend 214 with the liquid condition of melting, after above-mentioned aluminium/aluminium alloy unit 22 cooling curing, central part 212 in above-mentioned body 211 is formed a corresponding columned capped section 221, and expose section 222 by the outwardly shape in openend 214 of above-mentioned body 211 in one-tenth one, the above-mentioned external diameter exposing section 222 trims the external diameter of above-mentioned carbon rod unit 21, and the above-mentioned length exposing section 222 is set to 2 ~ 4mm, avoid above-mentioned carbon rod unit 21 in pressure injection process damaged.
Carbon rod unit 21 of the present invention is mixed by Delanium, petroleum coke, carbon black and bonding agent, and shaping and burn till through more than 1000 DEG C high temperature with extrusion molding machine, uses and promotes carbon rod unit 21 density and structural strength; The density of above-mentioned carbon rod unit 21 is between 1.76 ~ 1.84g/cm
3, structural strength is between 500 ~ 850kgf/cm
2, begin to bear pressure when aluminium/aluminium alloy unit 22 injects central part 212.
Aluminium of the present invention/aluminium alloy unit 22 enters carbon rod central part 212 through molten condition pressure injection, to make between metal and carbon rod closely then; And the fine aluminium content of above-mentioned aluminium/aluminium alloy unit 22 must reach more than 80wt%, poisonous metal is avoided to cause ecological environment and human injury; And the percentage by weight of above-mentioned aluminium/aluminium alloy unit 22 accounts for 10 ~ 40% of whole carbon arc gouge carbon rod 20, so can conduct electricity arc discharge time required big current.
Refer to shown in Fig. 5, carbon arc gouge carbon rod 20 of the present invention is in time making, above-mentioned carbon rod unit 21 must be loaded in the two making spaces 31 that also mould 30 is formed, and connect a pressure injection piston 32 in above-mentioned and mould 30 outside, above-mentioned aluminium/aluminium alloy unit 22 is pressurizeed inject and be positioned over the above-mentioned and central part 212 of carbon rod unit 21 in mould 30, and the aluminium of molten condition/aluminium alloy unit 22 will form above-mentioned capped section 221 and expose section 222 after above-mentioned carbon rod unit 21 is in conjunction with rear cooling, so can form the carbon arc gouge carbon rod 20 that a resistance value is 0.1 ~ 1.0m Ω-cm, there is good electric conductivity.
Carbon arc gouge carbon rod 20 usefulness manufactured by the present invention is better than the product of existing traditional meltallizing engineering method, and usefulness is compared as follows according to consumption degree:
Note: the iron weight that consumption degree can remove for carbon rod unit length.
In addition, the carbon arc gouge carbon rod 20 manufactured by the present invention must meet the operation use that following table is suitable for electric current, and fervid phenomenon can not occur.
Refer to shown in Fig. 6, carbon arc gouge carbon rod 20 of the present invention is applied in carbon rod electric arc fluting and adds man-hour, between carbon rod unit 21 and metal material 40 (iron, cast steel) by while producing electric arc, by the height of electric arc is warm, metal being dissolved, molten metal removes, makes metal material form groove or cut off metal by the air that sprays high pressure from spray welding gun 41 along carbon rod unit 21.
In sum, required consuming little energy when aluminium/aluminium alloy unit is fused into liquid state by the present invention, manufacturing cost is low, the high financial profit of traditional approach comparatively, and with the injection mode of pressure by aluminium/aluminium alloy unit can obtain the metal level of high compactness and metal oxide is few; High light, noise and the metallic dust produced in traditional meltallizing process etc. separately can be avoided to pollute impact human body and environment, and the manufacturing man-hours that aluminium can be allowed to be combined with carbon rod shortens, reduce metal wastage, allow manufacturing cost significantly reduce.
Above illustrated embodiment is only not in a limitative way with the present invention for convenience of description, not from scope of the present invention, is familiar with various Simple transformed that industry technical staff can do and modification, all must includes in the scope of patent protection of the present invention.
Claims (8)
1. a carbon arc gouge carbon rod, is characterized in that, comprises:
One carbon rod unit, has the body of a long strip type, and above-mentioned body interior central authorities hollow out is formed a central part, and above-mentioned central part forms one first openend in body first end, and extends to form one second openend towards above-mentioned body second end; And
One aluminium/aluminium alloy unit, pressure is utilized to inject central part by the second openend of above-mentioned carbon rod unit with the liquid condition of melting, above-mentioned aluminium/aluminium alloy unit is after cooling curing, central part in above-mentioned body is formed a capped section, and forms one expose section by the second openend of above-mentioned body is outwardly.
2. carbon arc gouge carbon rod according to claim 1, is characterized in that: described carbon rod unit is mixed by Delanium, petroleum coke, carbon black and bonding agent, and shaping and burn till through more than 1000 DEG C high temperature with extrusion molding machine.
3. carbon arc gouge carbon rod according to claim 1, is characterized in that: the density of described carbon rod unit is between 1.76 ~ 1.84g/cm
3.
4. carbon arc gouge carbon rod according to claim 1, is characterized in that: the structural strength of described carbon rod unit is between 500 ~ 850kgf/cm
2.
5. carbon arc gouge carbon rod according to claim 4, is characterized in that: the fine aluminium content of described aluminium/aluminium alloy unit must reach more than 80wt%.
6. carbon arc gouge carbon rod according to claim 1, is characterized in that: the percentage by weight of described aluminium/aluminium alloy unit accounts for 10 ~ 40% of whole carbon arc gouge carbon rod.
7. carbon arc gouge carbon rod according to claim 1, is characterized in that: the resistance of described carbon arc gouge carbon rod is 0.1 ~ 1.0m Ω-cm.
8. carbon arc gouge carbon rod according to claim 1, is characterized in that: described exposed area segment length is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210381021.3A CN103722300B (en) | 2012-10-10 | 2012-10-10 | Carbon arc gouge carbon rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210381021.3A CN103722300B (en) | 2012-10-10 | 2012-10-10 | Carbon arc gouge carbon rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103722300A CN103722300A (en) | 2014-04-16 |
| CN103722300B true CN103722300B (en) | 2016-03-02 |
Family
ID=50446724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210381021.3A Expired - Fee Related CN103722300B (en) | 2012-10-10 | 2012-10-10 | Carbon arc gouge carbon rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103722300B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105693247A (en) * | 2016-01-21 | 2016-06-22 | 延边双龙炭素制品有限公司 | Production method of high-efficiency, energy-saving and environment-friendly air-arc gouging carbon electrode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417340A (en) * | 1977-07-09 | 1979-02-08 | Takaoka Goukin Kk | Method of making aluminum sacrifice electrode rod |
| US4201902A (en) * | 1977-11-09 | 1980-05-06 | Arcair Company | Electrode for air-carbon arc cutting and gouging |
| CN86106357A (en) * | 1985-09-25 | 1987-05-13 | 尤泰克蒂克公司 | The belt carcass tubular pole and the method that are used for electric-arc cutting of metals |
| CN101391348A (en) * | 2008-06-04 | 2009-03-25 | 松下电器产业株式会社 | Carbon electrode for planning and manufacture method thereof |
-
2012
- 2012-10-10 CN CN201210381021.3A patent/CN103722300B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417340A (en) * | 1977-07-09 | 1979-02-08 | Takaoka Goukin Kk | Method of making aluminum sacrifice electrode rod |
| US4201902A (en) * | 1977-11-09 | 1980-05-06 | Arcair Company | Electrode for air-carbon arc cutting and gouging |
| CN86106357A (en) * | 1985-09-25 | 1987-05-13 | 尤泰克蒂克公司 | The belt carcass tubular pole and the method that are used for electric-arc cutting of metals |
| CN101391348A (en) * | 2008-06-04 | 2009-03-25 | 松下电器产业株式会社 | Carbon electrode for planning and manufacture method thereof |
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| CN103722300A (en) | 2014-04-16 |
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