CN107442914B - High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm - Google Patents
High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm Download PDFInfo
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- CN107442914B CN107442914B CN201710896069.0A CN201710896069A CN107442914B CN 107442914 B CN107442914 B CN 107442914B CN 201710896069 A CN201710896069 A CN 201710896069A CN 107442914 B CN107442914 B CN 107442914B
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- nozzle
- electrode
- cooling water
- insulating sleeve
- snap ring
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005275 alloying Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Images
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 discloses a high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm, which comprises a nozzle, a pressing cap, an electrode, a vortex ring and an insulating sleeve, wherein the nozzle and the pressing cap are coaxially sleeved, the lower end of the nozzle is matched with the lower concave edge of the pressing cap, an embedded electrode which is concentrically arranged with the nozzle is arranged above the nozzle, the side wall of the electrode is provided with a cooling water outlet, and the cooling water outlet is connected with a cooling water outlet channel; the nozzle is internally provided with a cooling water channel, a water inlet channel of the nozzle is communicated with a cooling water inlet channel, and a water outlet channel of the nozzle is communicated with a cooling water outlet channel; the upper end of the nozzle is sequentially provided with a connector, a vortex ring, an insulating sleeve and an inner snap ring from bottom to top, a spring is arranged between the inner snap ring and the insulating sleeve, the snap ring is clamped on the inner snap ring and is in threaded connection with the insulating sleeve, and the vortex ring is provided with an air inlet channel for working gas. The cutting torch has large cutting thickness, can continuously ensure stable airflow when cutting, has long replacement period of wearing parts such as electrodes, nozzles and the like, and prolongs the service life of the cutting torch.
Description
Technical Field
The invention relates to the field of machining equipment, in particular to a high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm.
Background
Plasma cutting is a method in which a high-frequency arc is "decomposed" or ionized into basic atoms or particles to generate plasma, and a workpiece is fusion-cut using a high-temperature, high-speed plasma jet formed by compressing the arc with a small-diameter nozzle as a heat source during cutting.
The plasma cutting torch is an important part of the plasma cutting machine, the service life of the plasma cutting machine is related to wearing parts such as an electrode and a nozzle on the plasma cutting torch, the electrode and the nozzle are easily damaged by high temperature, the thickness range of the conventional plasma cutting stainless steel is below 100mm, and the replacement period of the wearing parts of the plasma cutting torch is short due to the wearing property of the electrode and the nozzle.
Disclosure of Invention
The invention aims to provide a high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm, so as to solve all the problems mentioned above.
The technical scheme of the invention is as follows: a high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm comprises a nozzle, a pressing cap, an electrode, a vortex ring and an insulating sleeve, wherein the nozzle and the pressing cap are coaxially sleeved, and the lower end of the nozzle is matched with a concave edge of the pressing cap;
an electrode concentrically arranged with the nozzle is arranged above the nozzle, the electrode comprises an electrode body and an electron emitter arranged at the lower end of the electrode body, and the electron emitter is embedded on the electrode body; the electrode is of a hollow structure, a cooling water inlet channel is arranged in the middle of the electrode, an end ring is arranged at the upper part of the electrode, and threads are arranged on the outer circumference of the lower part of the electrode;
a cooling water outlet is formed in the side wall of the electrode and is connected with a cooling water outlet channel; a cooling water channel is arranged in the nozzle, a water inlet channel of the nozzle is communicated with a cooling water inlet channel, and a water outlet channel of the nozzle is communicated with a cooling water outlet channel;
the upper end of the nozzle is provided with a connector, a vortex ring is arranged above the connector, an insulating sleeve is arranged above the vortex ring, an inner snap ring is arranged above the insulating sleeve, a spring is arranged between the inner snap ring and the insulating sleeve, the snap ring is clamped on the inner snap ring, the snap ring is in threaded connection with the insulating sleeve, and the connector, the vortex ring, the insulating sleeve, the inner snap ring and the snap ring are coaxially sleeved with the electrode;
a plurality of round holes are uniformly formed in the circumferential direction of the lower portion of the vortex ring, and an air inlet channel for working gas is formed in the vortex ring.
Preferably, the contact parts of the pressure cap, the nozzle, the connecting body, the vortex ring, the insulating sleeve and the snap ring are provided with sealing devices.
Preferably, the material of the electrode body and the nozzle is copper.
Preferably, the material of the electron emitter is hafnium or Re-Y2O3 alloy.
Preferably, the compression angle α of the nozzle is in the range: alpha is more than 45 degrees and less than 70 degrees, and the wall thickness of the nozzle is 2-5 mm.
Preferably, the nozzle has a compression angle α of 60 ° and a wall thickness of 4 mm.
Preferably, the inner diameter of the cooling water inlet channel is phi 8mm, and the flow velocity of water flow in the cooling water inlet channel is greater than or equal to 8-10L/min.
The invention has the beneficial effects that:
1. the high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm provided by the invention is compact in structure and convenient to use, can be used for cutting various metal and non-metal materials, and can be used for cutting stainless steel with the thickness larger than that of conventional equipment and can reach the maximum thickness of 160 mm.
2. The electrode structure and the nozzle are designed in a structure and are made of materials, the conditions of heating and quick cooling are improved, the service life of a structural part is prolonged, the electrode structure and the nozzle are quickly cooled by adopting quick water cooling, cooling water can quickly pass through the electrode and the nozzle needing to be cooled, the cooling effect of the electrode and the nozzle is enhanced, the service life of the cutting torch is prolonged, the replacement period of easily damaged parts is prolonged, and the processing cost and the labor and economic cost are reduced.
The plasma cutting torch has the advantages of large cutting thickness, long service life of the electrode and the nozzle, prolonged service life of the cutting torch, prolonged replacement period of easily damaged parts, and reduced processing cost and labor cost.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to fig. 1, but it should be understood that the scope of the present invention is not limited by the embodiment.
Referring to fig. 1, the embodiment of the invention provides a high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm, which comprises a nozzle 1, a pressure cap 2, an electrode 3, a vortex ring 4 and an insulating sleeve 7, wherein the nozzle 1 and the pressure cap 2 are coaxially sleeved, and the lower end of the nozzle 1 is matched with a concave edge of the pressure cap 2;
an electrode 3 concentrically mounted with the nozzle 1 is arranged above the nozzle 1, the electrode 3 comprises an electrode body 301 and an electron emitter 302 arranged at the lower end of the electrode body 301, and the electron emitter 302 is embedded on the electrode body 301; the electrode 3 is of a hollow structure, a cooling water inlet channel 12 is arranged in the middle of the electrode, an end ring 13 is arranged at the upper part of the electrode, threads are arranged on the outer circumference of the lower part of the electrode 3, and the thread pitch of the threads is 2.1;
a cooling water outlet is formed in the side wall of the electrode 3 and is connected with a cooling water outlet channel 11; a cooling water channel is arranged in the nozzle 1, a water inlet channel of the nozzle is communicated with a cooling water inlet channel 12, and a water outlet channel of the nozzle is communicated with a cooling water outlet channel 11;
the upper end of the nozzle 1 is provided with a connector 5, a vortex ring 4 is arranged above the connector 5, an insulating sleeve 7 is arranged above the vortex ring 4, an inner snap ring 10 is arranged above the insulating sleeve 7, a spring 8 is arranged between the inner snap ring 10 and the insulating sleeve 7, a snap ring 9 is clamped on the inner snap ring 10, the snap ring 9 is in threaded connection with the insulating sleeve 7, and the connector 5, the vortex ring 4, the insulating sleeve 7, the inner snap ring 10 and the snap ring 9 are coaxially sleeved with the electrode 3;
a plurality of round holes are uniformly formed in the circumferential direction of the lower portion of the vortex ring 4, and an air inlet channel 6 for working gas is arranged on the vortex ring 4.
Furthermore, sealing devices are arranged on the contact parts of the pressure cap 2, the nozzle 1, the connector 5, the vortex ring 4, the insulating sleeve 7 and the snap ring 9, and the contact parts of all the parts are provided with the sealing devices to prevent air leakage and water leakage.
Further, the material of the electrode body 301 and the nozzle 1 is red copper.
Further, the material of the electron emitter 302 is hafnium or Re — Y2O3 alloy.
Further, the range of the compression angle α of the nozzle 1 is: alpha is more than 45 degrees and less than 70 degrees, and the wall thickness of the nozzle 1 is 2-5 mm.
Further, the compression angle α of the nozzle 1 is 60 °, and the wall thickness of the nozzle 1 is 4 mm.
Further, the inner diameter of the cooling water inlet channel 12 is phi 8mm, and the flow velocity of water flow in the cooling water inlet channel 12 is greater than or equal to 8-10L/min.
In summary, the embodiments of the present invention provide the following beneficial effects:
the high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm provided by the invention is compact in structure and convenient to use, can be used for cutting various metal and non-metal materials, and can be used for cutting stainless steel with the thickness larger than that of conventional equipment and can reach the maximum thickness of 160 mm.
The outer circumference of the lower part of the electrode is provided with the threads, the thread pitch of the threads is 2.1mm, nitrogen gas flow enters the vortex ring from the air inlet channel to form vortex gas flow, the vortex gas flow passes through the threads on the outer circumference of the electrode for enhancing the vortex gas flow on a forward path, and the nitrogen gas vortex gas flow takes away part of heat while flowing out.
The lower part of the nozzle is also provided with a splash-proof protective cap, because the cutting thickness of the device is large, slag can return upwards before plasma arcs penetrate through the thick wall of a cutting part, if the protective cap is not arranged, the slag can directly impact the nozzle, the service life of the nozzle is reduced, and even the nozzle is blocked or burnt, therefore, the splash-proof protective cap is arranged below the nozzle, the periphery of the cutting torch is additionally provided with a fixing cover for fixing the protective cap, and the fixing cover and the protective cap are assembled together through threads.
The invention adopts quick water cooling, the cooling water can quickly pass through the electrode and the nozzle which need to be cooled, the cooling effect of the electrode and the nozzle is enhanced, the service life of the cutting torch is prolonged, the replacement period of easily damaged parts is prolonged, and the processing cost and the labor economic cost are reduced.
In conclusion, the plasma cutting torch has the advantages of large cutting thickness and long service life of the electrode and the nozzle, prolongs the service life of the cutting torch and the replacement period of easily damaged parts, and reduces the processing cost and the labor cost.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. A high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm comprises a nozzle (1), a pressure cap (2), an electrode (3), a vortex ring (4) and an insulating sleeve (7), and is characterized in that the nozzle (1) and the pressure cap (2) are coaxially sleeved, and the lower end of the nozzle (1) is matched with a concave edge of the pressure cap (2);
an electrode (3) concentrically mounted with the nozzle (1) is arranged above the nozzle (1), the electrode (3) comprises an electrode body (301) and an electron emitter (302) arranged at the lower end of the electrode body (301), and the electron emitter (302) is embedded on the electrode body (301); the electrode (3) is of a hollow structure, a cooling water inlet channel (12) is arranged in the middle of the electrode, an end ring (13) is arranged at the upper part of the electrode, threads are arranged on the outer circumference of the lower part of the electrode (3), and the thread pitch of the threads is 2.1 mm;
a cooling water outlet is formed in the side wall of the electrode (3), and is connected with a cooling water outlet channel (11); a cooling water channel is arranged in the nozzle (1), a water inlet channel of the nozzle is communicated with a cooling water inlet channel (12), and a water outlet channel of the nozzle is communicated with a cooling water outlet channel (11);
the upper end of the nozzle (1) is provided with a connector (5), a vortex ring (4) is arranged above the connector (5), an insulating sleeve (7) is arranged above the vortex ring (4), an inner snap ring (10) is arranged above the insulating sleeve (7), a spring (8) is arranged between the inner snap ring (10) and the insulating sleeve (7), the snap ring (9) is clamped on the inner snap ring (10), the snap ring (9) is in threaded connection with the insulating sleeve (7), and the connector (5), the vortex ring (4), the insulating sleeve (7), the inner snap ring (10) and the snap ring (9) are coaxially sleeved with the electrode (3);
a plurality of round holes are uniformly formed in the circumferential direction of the lower part of the vortex ring (4), and an air inlet channel (6) for working gas is arranged on the vortex ring (4);
sealing devices are arranged at the contact positions of the pressure cap (2), the nozzle (1), the connecting body (5), the vortex ring (4), the insulating sleeve (7) and the snap ring (9);
the inner diameter of the cooling water inlet channel (12) is phi 8mm, and the flow velocity of water flow in the cooling water inlet channel (12) is larger than or equal to 8-10L/min.
2. The plasma torch for cutting stainless steel with high power of 100-160 mm thickness as claimed in claim 1, wherein the material of the electrode body (301) and the nozzle (1) is red copper.
3. The high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm as claimed in claim 1, wherein the material of the electron emitter (302) is hafnium or Re-Y2O3And (3) alloying.
4. A high power plasma torch for cutting stainless steel of 100-160 mm thickness as claimed in claim 1 wherein the compression angle α of the nozzle (1) is in the range of: alpha is more than 45 degrees and less than 70 degrees, and the wall thickness of the nozzle (1) is 2-5 mm.
5. The high-power plasma cutting torch for cutting stainless steel with the thickness of 100-160 mm as claimed in claim 4, wherein the compression angle α of the nozzle (1) is 60 degrees, and the wall thickness of the nozzle (1) is 4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710896069.0A CN107442914B (en) | 2017-09-28 | 2017-09-28 | High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710896069.0A CN107442914B (en) | 2017-09-28 | 2017-09-28 | High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107442914A CN107442914A (en) | 2017-12-08 |
| CN107442914B true CN107442914B (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710896069.0A Expired - Fee Related CN107442914B (en) | 2017-09-28 | 2017-09-28 | High-power plasma cutting torch for cutting stainless steel with thickness of 100-160 mm |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6549685B2 (en) * | 2017-12-18 | 2019-07-24 | 小池酸素工業株式会社 | Device for supplying water flow along plasma cutting torch |
| TWI686106B (en) * | 2019-01-25 | 2020-02-21 | 國立清華大學 | Field emission enhanced handheld atmospheric pressure plasma generator |
| CN112555820A (en) * | 2019-09-26 | 2021-03-26 | 安士英 | Electric arc heating flame thrower |
| CN111590175A (en) * | 2020-06-01 | 2020-08-28 | 中国石油大学(华东) | Plasma nozzle for cutting petroleum casing pipe |
| CZ2020513A3 (en) * | 2020-09-15 | 2021-11-03 | Thermacut, K.S. | Plasma torch assembly and operating it |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203471129U (en) * | 2013-08-22 | 2014-03-12 | 常州特尔玛枪嘴有限公司 | Integrated spraying nozzle |
| CN104014918A (en) * | 2014-05-19 | 2014-09-03 | 常州市华瑞焊割机械有限公司 | Medium-arc-striking non-high-frequency plasma cutting gun |
| CN105537743A (en) * | 2016-02-05 | 2016-05-04 | 中国民航大学 | Micro-plasma arc welding gun |
| CN205834463U (en) * | 2016-07-11 | 2016-12-28 | 周国清 | A kind of dual-purpose plasma cutting-torch of Rapid Circulation water-cooled |
| CN205834464U (en) * | 2016-07-11 | 2016-12-28 | 周国清 | A kind of Rapid Circulation water-cooling plasma cutting torch |
-
2017
- 2017-09-28 CN CN201710896069.0A patent/CN107442914B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203471129U (en) * | 2013-08-22 | 2014-03-12 | 常州特尔玛枪嘴有限公司 | Integrated spraying nozzle |
| CN104014918A (en) * | 2014-05-19 | 2014-09-03 | 常州市华瑞焊割机械有限公司 | Medium-arc-striking non-high-frequency plasma cutting gun |
| CN105537743A (en) * | 2016-02-05 | 2016-05-04 | 中国民航大学 | Micro-plasma arc welding gun |
| CN205834463U (en) * | 2016-07-11 | 2016-12-28 | 周国清 | A kind of dual-purpose plasma cutting-torch of Rapid Circulation water-cooled |
| CN205834464U (en) * | 2016-07-11 | 2016-12-28 | 周国清 | A kind of Rapid Circulation water-cooling plasma cutting torch |
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| Publication number | Publication date |
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| CN107442914A (en) | 2017-12-08 |
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| PB01 | Publication | ||
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Address after: 150028 No. 2077 Innovation Road, Songbei District, Harbin City, Heilongjiang Province Applicant after: HARBIN WELDING INSTITUTE Ltd. Address before: 150028 No. 2077 Innovation Road, Songbei District, Harbin City, Heilongjiang Province Applicant before: HARBIN WELDING INSTITUTE, CHINA ACADEMY OF MACHINERY SCIENCE AND TECHNOLOGY |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181204 Address after: 163318 No. 99 Xuefu Street, Daqing Hi-tech Industrial Development Zone, Heilongjiang Province Applicant after: NORTHEAST PETROLEUM University Applicant after: HARBIN WELDING INSTITUTE Ltd. Address before: 150028 No. 2077 Innovation Road, Songbei District, Harbin City, Heilongjiang Province Applicant before: HARBIN WELDING INSTITUTE Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210129 |