CN104014918A - Medium-arc-striking non-high-frequency plasma cutting gun - Google Patents
Medium-arc-striking non-high-frequency plasma cutting gun Download PDFInfo
- Publication number
- CN104014918A CN104014918A CN201410212439.0A CN201410212439A CN104014918A CN 104014918 A CN104014918 A CN 104014918A CN 201410212439 A CN201410212439 A CN 201410212439A CN 104014918 A CN104014918 A CN 104014918A
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- Prior art keywords
- striking
- arc
- main body
- medium
- head main
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- 238000005520 cutting process Methods 0.000 title abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 5
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 11
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 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
- B23K10/00—Welding or cutting by means of a plasma
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Plasma Technology (AREA)
Abstract
The invention relates to a medium-arc-striking non-high-frequency plasma cutting gun. The medium-arc-striking non-high-frequency plasma cutting gun comprises a handle, a gun head body, a medium-arc-striking electrode, a medium-arc-striking jet nozzle, a protecting sleeve and a driving part used for driving the medium-arc-striking electrode to be separated from a medium-arc-striking jet nozzle. The gun head body is fixedly connected with the handle. A cylindrical connector connected with the driving part is arranged at the top end of the medium-arc-striking electrode. A protruding part is arranged in the middle of the medium-arc-striking electrode and is of a cylindrical protrusion shape. An arc striking part with a conical surface is arranged below the protruding part, and the diameter of the arc striking part is gradually decreased. A conical wall surface is arranged in the middle of a cavity inside the medium-arc-striking jet nozzle and corresponds to the arc striking part in conical surface size. According to the medium-arc-striking non-high-frequency plasma cutting gun, by the adoption of the non-high-frequency arc striking mode, interference with peripheral equipment is avoided; the arc striking position is set as the middle of the medium-arc-striking electrode, so that the service life of the medium-arc-striking electrode and the medium-arc-striking jet nozzle is prolonged; meanwhile, a cooling system is optimized, the overall cooling performance of the cutting gun is improved, and the service life of the cutting gun is prolonged.
Description
Technical field
The present invention relates to welding gun field, particularly the non-high frequency plasma burning torch of a kind of middle striking.
Background technology
Plasma cutting gun cutting is to utilize the heat of high-temperature plasma electric arc to make the metal local melting of workpiece incision, and borrows the isoionic foundation of high speed to discharge motlten metal to form a kind of processing method of otch.When the advantage of plasma cutting is the little metal of cutting thickness, plasma cutting speed is opened, and cut surface is bright and clean, and thermal deformation is little, almost there is no heat affected area.Because traditional high-frequency arc strike technology can produce serious electromagnetic interference, affect the normal operation of peripheral facility, therefore researched and developed the plasma cutting gun of non-high frequency.The contacting ignition arc position of the electrode of existing plasma cutting gun and nozzle is positioned at the lower end of electrode, when plasma cutting gun is used, striking position localized hyperthermia, the striking position on electrode and nozzle is easy to damage, cause electrode and nozzle short service life, replacement frequency is high.
Summary of the invention
The object of the invention is to the problem of easily damaging for electrode and the nozzle of pointed existing plasma cutting gun in background technology, a kind of non-high frequency plasma burning torch of middle striking that can solve foregoing problems is provided.
The technical scheme that realizes goal of the invention of the present invention is as follows:
The non-high frequency plasma burning torch of a kind of middle striking, it comprises handle, rifle head main body, middle arc electrode, middle striking nozzle, the arc electrode driver part separated with middle striking nozzle in protective sleeve and driving, described rifle head main body is fixedly connected with handle, the top of described middle arc electrode is provided with the cylindricality connector being connected with described driver part, middle part at middle arc electrode is provided with lug boss, lug boss is columniform convex, the below of lug boss is provided with the striking portion of the diminishing taper surface of diameter, the middle part of middle arc electrode and bottom extend in the cavity of middle striking nozzle interior, the lower end of middle striking nozzle is provided with out arc hole, the cavity middle part of middle striking nozzle interior is provided with taper wall, this taper wall is corresponding with the taper surface size of striking portion, top at middle striking nozzle is connected with ring of eddy, the top of ring of eddy is connected with rifle head main body, described protective sleeve be arranged on middle striking nozzle and rifle head main body outside, protective sleeve top is connected with rifle head main body, the position that is arranged in the bottom of striking nozzle in the lower end of protective sleeve is provided with protection cotton up to cover.
Separated and closed for the ease of arc electrode in controlling and middle striking nozzle, described driver part comprises piston and piston rod, the lower end of piston rod is fixedly connected with middle arc electrode, piston is fixed on piston rod and is arranged in the top of arc electrode, on piston rod, be positioned at piston above be provided with back-moving spring, the top that is positioned at back-moving spring in rifle head main body inside is provided with limiting section, piston rod inside is provided with gas passage, the top of piston rod is connected with airway, on piston rod wall, between piston and middle arc electrode, be provided with pore, position corresponding with this pore position on rifle head main body wall is provided with passage.
In order to strengthen the Product Precision of rifle head main body, strengthen cooling effect, extend life of product, described rifle head main body comprises piston tube, tube connector and is connected to the adapter sleeve at tube connector lower ending opening place, tube connector is connected to the middle and lower part of piston tube, and adapter sleeve is connected to the bottom of tube connector.
In order to ensure the sealing between adapter sleeve and piston rod, described adapter sleeve inwall middle part is provided with seal groove, and sealing ring is set in seal groove, and piston rod passes from sealing circle, makes to keep air-tightness between adapter sleeve and piston rod.
Limiting section described in such scheme is the step surface that is arranged on the bottom of piston tube.
Passage described in such scheme is arranged on the tube wall of described tube connector.
In order to reduce the resistance of piston stroking upward; be convenient in piston driving arc electrode separated with middle striking nozzle; on the wall of described rifle head main body, be positioned at piston above be provided with leakage hole, described leakage hole is arranged on the tube wall of tube connector, and is positioned at the top of described protective sleeve.
In order to strengthen the air-tightness of protective sleeve and rifle head main body connecting portion; below the connecting portion of described protective sleeve and rifle head main body; between protective sleeve and rifle head main body, be provided with sealing ring; for the ease of centering striking nozzle, carry out cooling down; protective sleeve inside is provided with the flange collar of striking nozzle in support; in this flange collar, be provided with cooled gas path, the below of protective sleeve is provided with refrigerating gas outlet.
For the ease of the placement of burning torch, the below of described protective sleeve is provided with turning rolls, is provided with the support member corresponding with protective sleeve shape on turning rolls.
The advantage of the non-high frequency plasma burning torch of middle striking of the present invention is: 1) adopt the striking mode of non-high frequency, can not cause interference to the equipment of periphery, can guarantee the normal operation of peripheral facilities; 2) in, between arc electrode and middle striking nozzle, striking position is arranged in the middle part of arc electrode, and contact area is large, can avoid localized hyperthermia to cause the damage of middle arc electrode and middle striking nozzle, the service life of arc electrode and middle striking nozzle in prolongation; 3) rifle head main body designs simplification, production assembling is all fairly simple, can effectively improve the precision of product; 4) cooling system of burning torch of the present invention, through optimal design, has strengthened cooling effect, has extended the service life of middle striking nozzle; 5) position that protective sleeve approaches plasma arc is provided with protection cotton up to cover, can extend the service life of protective sleeve, reduces use cost.
Accompanying drawing explanation
Fig. 1 is the fractionation schematic diagram of the non-high frequency plasma burning torch of middle striking of the present invention;
Fig. 2 is the assembling schematic diagram of the non-high frequency plasma burning torch of middle striking of the present invention;
Fig. 3 is the cutaway view of the non-high frequency plasma burning torch of middle striking of the present invention;
In figure, 1 is handle, 2 is rifle head main body, 3 is middle arc electrode, 4 is middle striking nozzle, 5 is protective sleeve, 6 is cylindricality connector, 7 is striking portion, 8 for going out arc hole, 9 is taper wall, 10 is ring of eddy, 11 is protection cotton up to cover, 12 is piston, 13 is piston rod, 14 is back-moving spring, 15 is limiting section, 16 is gas passage, 17 is airway, 18 is pore, 19 is passage, 20 is piston tube, 21 is tube connector, 22 is adapter sleeve, 23 is sealing ring, 24 is leakage hole, 25 is cooled gas path, 26 is refrigerating gas outlet, 27 is turning rolls.
The specific embodiment
Referring to figs. 1 through the non-high frequency plasma burning torch of a kind of middle striking shown in Fig. 3, it comprises handle 1, rifle head main body 2, middle arc electrode 3, middle striking nozzle 4, arc electrode 3 driver part separated with middle striking nozzle 4 in protective sleeve 5 and driving, described rifle head main body 2 is fixedly connected with handle 1, the top of described middle arc electrode 3 is provided with the cylindricality connector 6 being connected with described driver part, middle part at middle arc electrode 3 is provided with lug boss, lug boss is columniform convex, the below of lug boss is provided with the striking portion 7 of the diminishing taper surface of diameter, the middle part of middle arc electrode 3 and bottom extend in the cavity of middle striking nozzle 4 inside, the lower end of middle striking nozzle 4 is provided with out arc hole 8, the cavity middle part of middle striking nozzle 4 inside is provided with taper wall 9, this taper wall 9 is corresponding with the taper surface size of striking portion 7, at the top of middle striking nozzle 4, be connected with ring of eddy 10, the top of ring of eddy 10 is connected with rifle head main body 2, described protective sleeve 5 be arranged on middle striking nozzle 4 and rifle head main body 2 outside, protective sleeve 5 tops are connected with rifle head main body 2, the position that is arranged in the bottom of striking nozzle 4 in the lower end of protective sleeve 5 is provided with protection cotton up to cover 11.
Separated and closed for the ease of arc electrode 3 in controlling and middle striking nozzle 4, described driver part comprises piston 12 and piston rod 13, the lower end of piston rod 13 arranges female connecting hole, the cylindricality connector 6 on middle arc electrode 3 tops is provided with the screw-internal thread fit external screw thread with this connecting hole, piston 12 is fixed on piston rod 13 and is arranged in the top of arc electrode 3, on piston rod 13, be positioned at piston 12 above be provided with back-moving spring 14, the top that is positioned at back-moving spring 14 in rifle head main body 2 inside is provided with limiting section 15, the upper end of back-moving spring 14 withstands on limiting section 15, the lower end of back-moving spring 14 withstands on piston 12, piston rod 13 inside are provided with gas passage 16, the top of bar is connected with airway 17, on piston rod 13 walls, between piston 12 and middle arc electrode 3, be provided with pore 18, position corresponding with these pore 18 positions on rifle head main body 2 walls is provided with passage 19.
In order to strengthen the Product Precision of rifle head main body 2, strengthen cooling effect, extend life of product, described rifle head main body 2 comprises piston tube 20, tube connector 21 and is connected to the adapter sleeve 22 at tube connector 21 lower ending opening places, tube connector 21 is connected to the middle and lower part of piston tube 20, and adapter sleeve 22 is connected to the bottom of tube connector 21.
In order to ensure the sealing between adapter sleeve 22 and piston rod 13, described adapter sleeve 22 inwall middle parts are provided with seal groove, sealing ring 23 is set in seal groove, and piston rod 13 passes from sealing circle 23, makes to keep air-tightness between adapter sleeve 22 and piston rod 13.
Limiting section 15 described in such scheme is for being arranged on the step surface of the bottom of piston tube 20.
Passage 19 described in such scheme is arranged on the tube wall of described tube connector 21.
In order to reduce the up resistance of piston 12; be convenient to piston 12 drive in arc electrode 3 separated with middle striking nozzle 4; on the wall of described rifle head main body 2, be positioned at piston 12 above be provided with leakage hole 24; described leakage hole 24 is arranged on the tube wall of tube connector 21, and is positioned at the top of described protective sleeve 5.
In order to strengthen the air-tightness of protective sleeve 5 and rifle head main body 2 connecting portions; below the connecting portion of described protective sleeve 5 and rifle head main body 2; between protective sleeve 5 and rifle head main body 2, be provided with sealing ring 23; for the ease of centering striking nozzle 4, carry out cooling down; protective sleeve 5 inside are provided with the flange collar of striking nozzle 4 in support; in this flange collar, be provided with cooled gas path 25, the below of protective sleeve 5 is provided with refrigerating gas outlet 26.In order to strengthen the cooling effect of centering striking nozzle 4, cooled gas path 25 is obliquely installed towards the direction of middle striking nozzle 4, and refrigerating gas is passed through in the outside wall surface of striking nozzle 4 in the rear direct arrival of cooled gas path 25.
For the ease of the placement of burning torch, the below of described protective sleeve 5 is provided with turning rolls 27, is provided with the support member corresponding with protective sleeve 5 shapes on turning rolls 27.
The non-high frequency plasma burning torch of middle striking of the present invention is under off working state, the striking portion 7 of middle arc electrode 3 contacts with the taper wall 9 of middle striking nozzle 4 inside, the non-high frequency plasma burning torch of middle striking in use, airway on rifle head main body 2 17 is connected with high pressure plasma gas tank, then open air valve, plasma (orifice) gas enters into the gas passage 16 in piston rod 13 by airway 17, then from piston 12 and pore 18 between arc electrode 3 derive, then, the promotion piston 12 of high pressure plasma gas moves upward, piston 12 drives piston rod 13 and middle arc electrode 3 to move upward, middle arc electrode 3 and middle striking nozzle 4 are separated, the passage 19 of part high pressure plasma gas from rifle head main body 2 derived, enter in the cavity of protective sleeve 5 inside, this part high pressure plasma gas enters in ring of eddy 10 by the pore 18 on ring of eddy 10, by the gas passage 16 in ring of eddy 10, enter in the cavity of striking nozzle 4 inside, then downwards by the striking portion 7 of middle arc electrode 3 and the taper surface of middle striking nozzle 4 inside, in 7, this striking portion, excite plasma-arc, electric arc sprays by the through hole of middle striking nozzle 4 belows, another part high pressure plasma gas is through the cooled gas path 25 on oversheath, in space in arrival between striking nozzle 4 and oversheath, centering striking nozzle 4 carries out cooling, and discharge by the refrigerating gas outlet 26 of oversheath below.After the non-high frequency plasma burning torch of middle striking end-of-job, powered-down, by the time middle striking nozzle 4 and middle arc electrode 3 cooling after, close high pressure plasma gas valve, piston 12 moves downward under the effect of back-moving spring 14, and piston 12 drives arc electrode 3 in piston rod 13 and then drive to move downward, and makes the striking portion 7 of middle arc electrode 3 and the taper of middle striking nozzle 4 inside avoid returning to the closure state under initial state, finally be placed on turning rolls 27, in order to using next time.
Claims (9)
1. the non-high frequency plasma burning torch of striking in a kind, it is characterized in that: it comprises handle, rifle head main body, middle arc electrode, middle striking nozzle, the arc electrode driver part separated with middle striking nozzle in protective sleeve and driving, described rifle head main body is fixedly connected with handle, the top of described middle arc electrode is provided with the cylindricality connector being connected with described driver part, middle part at middle arc electrode is provided with lug boss, lug boss is columniform convex, the below of lug boss is provided with the striking portion of the diminishing taper surface of diameter, the middle part of middle arc electrode and bottom extend in the cavity of middle striking nozzle interior, the lower end of middle striking nozzle is provided with out arc hole, the cavity middle part of middle striking nozzle interior is provided with taper wall, this taper wall is corresponding with the taper surface size of striking portion, top at middle striking nozzle is connected with ring of eddy, the top of ring of eddy is connected with rifle head main body, described protective sleeve be arranged on middle striking nozzle and rifle head main body outside, protective sleeve top is connected with rifle head main body, the position that is arranged in the bottom of striking nozzle in the lower end of protective sleeve is provided with protection cotton up to cover.
2. the non-high frequency plasma burning torch of middle striking according to claim 1, it is characterized in that: described driver part comprises piston and piston rod, the lower end of piston rod is fixedly connected with middle arc electrode, piston is fixed on piston rod and is arranged in the top of arc electrode, on piston rod, be positioned at piston above be provided with back-moving spring, the top that is positioned at back-moving spring in rifle head main body inside is provided with limiting section, piston rod inside is provided with gas passage, the top of piston rod is connected with airway, on piston rod wall, between piston and middle arc electrode, be provided with pore, position corresponding with this pore position on rifle head main body wall is provided with passage.
3. the non-high frequency plasma burning torch of middle striking according to claim 2, it is characterized in that: described rifle head main body comprises piston tube, tube connector and is connected to the adapter sleeve at tube connector lower ending opening place, tube connector is connected to the middle and lower part of piston tube, and adapter sleeve is connected to the bottom of tube connector.
4. the non-high frequency plasma burning torch of middle striking according to claim 3, it is characterized in that: described adapter sleeve inwall middle part is provided with seal groove, sealing ring is set in seal groove, and piston rod passes from sealing circle, makes to keep air-tightness between adapter sleeve and piston rod.
5. the non-high frequency plasma burning torch of middle striking according to claim 3, is characterized in that: described limiting section is the step surface that is arranged on the bottom of piston tube.
6. the non-high frequency plasma burning torch of middle striking according to claim 3, is characterized in that: described passage is arranged on the tube wall of described tube connector.
7. the non-high frequency plasma burning torch of middle striking according to claim 3; it is characterized in that: on the wall of described rifle head main body, be positioned at piston above be provided with leakage hole; described leakage hole is arranged on the tube wall of tube connector, and is positioned at the top of described protective sleeve.
8. the non-high frequency plasma burning torch of middle striking according to claim 1; it is characterized in that: below the connecting portion of described protective sleeve and rifle head main body; between protective sleeve and rifle head main body, be provided with sealing ring; protective sleeve inside is provided with the flange collar of striking nozzle in support; in this flange collar, be provided with cooled gas path, the below of protective sleeve is provided with refrigerating gas outlet.
9. the non-high frequency plasma burning torch of middle striking according to claim 1, is characterized in that: the below of described protective sleeve is provided with turning rolls, is provided with the support member corresponding with protective sleeve shape on turning rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212439.0A CN104014918B (en) | 2014-05-19 | 2014-05-19 | The non-high frequency plasma cutting gun of middle striking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212439.0A CN104014918B (en) | 2014-05-19 | 2014-05-19 | The non-high frequency plasma cutting gun of middle striking |
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| Publication Number | Publication Date |
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| CN104014918A true CN104014918A (en) | 2014-09-03 |
| CN104014918B CN104014918B (en) | 2016-02-17 |
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| CN201410212439.0A Active CN104014918B (en) | 2014-05-19 | 2014-05-19 | The non-high frequency plasma cutting gun of middle striking |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014918B (en) * | 2014-05-19 | 2016-02-17 | 常州市华瑞焊割机械有限公司 | The non-high frequency plasma cutting gun of middle striking |
| CN107442914A (en) * | 2017-09-28 | 2017-12-08 | 机械科学研究院哈尔滨焊接研究所 | The high powered plasma cutting torch of one kind cutting 100 ~ 160mm thickness stainless steels |
| CN109226948A (en) * | 2018-11-28 | 2019-01-18 | 黄山张氏焊接科技有限公司 | Double Purpose Galt is cut in a kind of universal plasma (orifice) gas slicing |
| CN109773314A (en) * | 2019-02-22 | 2019-05-21 | 上海亿诺焊接科技股份有限公司 | Plasma contacting ignition arc cuts pipette tips |
| CN109862987A (en) * | 2016-08-19 | 2019-06-07 | Ejot 有限责任公司 | Method for connecting at least two components layers to the preparatory drilling of cap rock using plasma beam |
| CN111037072A (en) * | 2020-01-13 | 2020-04-21 | 上海亿诺焊接科技股份有限公司 | High-frequency and non-high-frequency shared plasma cutting gun head |
| CN112091388A (en) * | 2020-09-29 | 2020-12-18 | 孙景玉 | Cutting torch anti-collision protection device of numerical control plasma cutting machine |
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| CN2719472Y (en) * | 2004-07-15 | 2005-08-24 | 常州市远洋焊割设备有限公司 | Air plasma arc cutting torch |
| CN1678164A (en) * | 2004-03-31 | 2005-10-05 | 株式会社大亨 | Plasma cutting torch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014918B (en) * | 2014-05-19 | 2016-02-17 | 常州市华瑞焊割机械有限公司 | The non-high frequency plasma cutting gun of middle striking |
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2014
- 2014-05-19 CN CN201410212439.0A patent/CN104014918B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5695662A (en) * | 1988-06-07 | 1997-12-09 | Hypertherm, Inc. | Plasma arc cutting process and apparatus using an oxygen-rich gas shield |
| US5278388A (en) * | 1993-06-07 | 1994-01-11 | Huang Huang Nan | Plasma welding and cutting gun for discharging plasma gas with constant outlet pressure |
| CN1678164A (en) * | 2004-03-31 | 2005-10-05 | 株式会社大亨 | Plasma cutting torch |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014918B (en) * | 2014-05-19 | 2016-02-17 | 常州市华瑞焊割机械有限公司 | The non-high frequency plasma cutting gun of middle striking |
| CN109862987A (en) * | 2016-08-19 | 2019-06-07 | Ejot 有限责任公司 | Method for connecting at least two components layers to the preparatory drilling of cap rock using plasma beam |
| CN109862987B (en) * | 2016-08-19 | 2022-01-04 | Ejot 有限责任公司 | Method for pre-perforating a cover layer by means of a plasma beam for connecting at least two component layers |
| CN107442914A (en) * | 2017-09-28 | 2017-12-08 | 机械科学研究院哈尔滨焊接研究所 | The high powered plasma cutting torch of one kind cutting 100 ~ 160mm thickness stainless steels |
| CN107442914B (en) * | 2017-09-28 | 2021-01-29 | 东北石油大学 | High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm |
| CN109226948A (en) * | 2018-11-28 | 2019-01-18 | 黄山张氏焊接科技有限公司 | Double Purpose Galt is cut in a kind of universal plasma (orifice) gas slicing |
| CN109226948B (en) * | 2018-11-28 | 2024-05-17 | 黄山张氏焊接科技有限公司 | Universal plasma gouging and cutting dual-purpose gun |
| CN109773314A (en) * | 2019-02-22 | 2019-05-21 | 上海亿诺焊接科技股份有限公司 | Plasma contacting ignition arc cuts pipette tips |
| CN109773314B (en) * | 2019-02-22 | 2023-10-31 | 上海亿诺焊接科技股份有限公司 | Plasma contact arc striking cutting gun head |
| CN111037072A (en) * | 2020-01-13 | 2020-04-21 | 上海亿诺焊接科技股份有限公司 | High-frequency and non-high-frequency shared plasma cutting gun head |
| CN112091388A (en) * | 2020-09-29 | 2020-12-18 | 孙景玉 | Cutting torch anti-collision protection device of numerical control plasma cutting machine |
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|---|---|
| CN104014918B (en) | 2016-02-17 |
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Denomination of invention: Medium arc non high-frequency plasma cutting gun Granted publication date: 20160217 Pledgee: China Construction Bank Corporation Changzhou Wujin sub branch Pledgor: CHANGZHOU HUARUI WELDING & CUTTING MACHINERY CO.,LTD. Registration number: Y2024980005968 |
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