CN1131598A - Plasma arc cutting torch - Google Patents
Plasma arc cutting torch Download PDFInfo
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- CN1131598A CN1131598A CN 95121544 CN95121544A CN1131598A CN 1131598 A CN1131598 A CN 1131598A CN 95121544 CN95121544 CN 95121544 CN 95121544 A CN95121544 A CN 95121544A CN 1131598 A CN1131598 A CN 1131598A
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- electrode
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- distributor
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Abstract
The present invention relates to a plasma arc cutting torch, which comprises a torch forebody, a main air pipe, an electrode, an electrode holder, a distribution device, a spray nozzle, a spray nozzle support, and a protective cap, wherein a multi-channel gas channel is formed by a first air chamber, a second air chamber, a third air chamber, and a plurality of air holes on the electrode holder and the distribution device. The plasma arc cutting torch of the structure can effectively improve the cooling for the electrode and the spray nozzle, thus the electric arc is generated more stably and the service lives of the electrode and the spray nozzle are prolonged.
Description
The present invention relates to a kind of plasma arc cutting torch, particularly a kind of improved plasma arc cutting torch that can more stably produce arc and prolong the service life of cutting torch electrode and nozzle.
In industry, Plasma Arc Cutting Technology is generally used for the cutting of metal.When with above-mentioned Plasma Arc Cutting Technology cutting metal, the high temperature of plasma arc plays the effect of the size that Metal Cutting is become to wish, and, adopt refrigerating gas to remove the material of fusion on the workpiece.
The advantage of above-mentioned plasma arc cutting torch is critically to control the voltage that is applied thereto, and with the gas torch technology that adopts imflammable gas mutually specific energy prevent dangerous blast and fire effectively, the operator can easily use this device like this.
In addition, this PLASMA ARC WELDING can provide a stable welded condition, so just can cut and weld those more accurately and resemble impossible material processed in the oxygen lance method such as stainless steel, cast iron, copper alloy, lead, concrete and refractory material.
Figure 1A represents different existing plasma arc cutting torch with Figure 1B, and this cutting torch comprises cylindric electrode 1a, 11a, and they are set at the inside of columnar hollow torch precursor 1,11 respectively.
In addition, outside the exterior portion of electrode 1a, 11a, be provided with plasma control nozzle 1b, 11b, be the shape of surrounding electric poles 1a, 11a.Between electrode 1a, 11a and plasma control nozzle 1b, 11b, formed plasma gas passage 3,13.Electric arc is directed to the end that jet hole 4,14 outside the torch is formed on plasma gas passage 3,13.
In addition, be provided with refrigerating gas nozzle 1c, 11c outside plasma control nozzle 1b, 11b, this refrigerating gas nozzle 1c, 11c are looped around the external peripheral surface of plasma control nozzle 1b, 11b.
Between plasma control nozzle 1b, 11b and refrigerating gas nozzle 1c, 11c, formed cooled gas path 2,12.
Simultaneously, the structure difference of Figure 1A and Figure 1B is, the plasma arc cutting torch shown in Figure 1A has introduces cooled gas path 2 and the plasma gas passage 3 that plasma gas and refrigerating gas pass through simultaneously.And the plasma arc cutting torch shown in Figure 1B has and introduces cooled gas path 12 and the plasma gas passage 13 that plasma gas and refrigerating gas pass through independently.
Above-mentioned common plasma arc cutting torch is by adopting when to electrode 1a, the pilot arc that ejects from jet hole 4,14 when 11a applies current/voltage and cutting metal or analog are come in the deposite metal.
In addition,, be used to cool off plasma control nozzle 1b, 11b from being formed on plasma control nozzle 1b, the 11b inject high pressure plasma gas in electrode 1a, the 11a outside, and, remove the melt substance of metal simultaneously.
, the shortcoming of existing plasma arc cutting torch is, because the gasification of the rising of electrode surface temperature and electrode surface is shortened the service life of cutting torch.
In addition, owing on the metal surface, formed oxidation material, instability so the generation of plasma arc becomes.
That is,, the temperature of electrode make nozzle and electrode aging rapidly, so that be to need per 3 hours to change electrode once under the condition of 60A at electrode current owing to rising near 12000 ° of K to 20000 ° of K.
Therefore, an object of the present invention is to provide a kind of plasma cutting-torch that can overcome the existing described shortcoming of plasma cutting-torch.
Another object of the present invention provides a kind of improved plasma-arc cutting torch that can more stably produce electric arc and prolong the service life of cutting torch electrode and nozzle.
To achieve the above object, the invention provides a kind of plasma cutting-torch, it comprises: a torch precursor, and it has an electrode of the nozzle that is arranged on its front portion and the portion that sets within it; One is arranged on the person in charge at rear portion under this torch precursor, and this person in charge is connected with torch precursor inside; An electrode support, it is arranged in the torch precursor and is connected with this electrode, and forms a plurality of pores on this electrode support, and this pore parallels with same direction; First air chamber that is formed between this torch precursor rear portion and this electrode support; A gas passage that is formed in the electrode support; Second air chamber that is formed between this electrode support and this electrode inboard; A distributor that is arranged between torch precursor inwall and the electrode outer surface; A nozzle bearing that is located at the preceding outer surface of this distributor; The 3rd air chamber that is formed between this nozzle bearing and this distributor; A plasma gas passage that is formed between distributor predetermined portions and the electrode outer surface; A protective cap that is located at the preceding outside of this nozzle bearing; Cooled gas path between the inner surface of an outer surface that is formed on this nozzle and this protective cap; With a pilot cable that is connected to the outer surface of nozzle bearing.
Below in conjunction with accompanying drawing in detail the preferred embodiments of the present invention are described in detail.In the accompanying drawing:
Figure 1A is a kind of cutaway view of existing plasma torch;
Figure 1B is the cutaway view of another kind of existing plasma torch;
Fig. 2 A is the cutaway view of plasma torch of the present invention;
Fig. 2 B is the cutaway view of plasma torch of the present invention along the IIb-IIb line.
Fig. 2 A shows a kind of plasma arc cutting torch of the present invention, and it comprises a person in charge 34 at the following rear portion that is arranged on torch precursor 30, and this person in charge 34 introduces torch precursor 30 with gas, and this person in charge 34 is connected with torch precursor 30 inside.
One first air chamber 26 is formed on the inboards inner and person in charge's 34 torch precursors 30 that are connected.
Be illustrated in the gas passage of 26 li formation of first air chamber in the accompanying drawings with label 221.
Simultaneously, electrode 21 is set, and electrode support 22 is connected with a side of electrode 21 and is used for a side support electrode at first air chamber 26 at the opposite side of first air chamber 26 of torch precursor 30 inboards.
In addition, form one second air chamber 27 between electrode support 22 and electrode 21, it extends to the outside of torch precursor 30.
A distributor 24 of being made by the pottery with high insulating property is arranged on a side of this second air chamber, and an end of this distributor 24 extends to the rear portion of torch precursor 30, and its other end extends to the front portion of torch precursor 30.
Here, one predetermined portions of the circumferential surface of pottery distributor 24 is connected with the external peripheral surface of electrode, and form the space between remainder that is not connected and the electrode 21 with electrode 21, like this, determined plasma gas passage 245 between this remainder and electrode 21 external peripheral surfaces.
Simultaneously, form a plurality of first pores 242 at the rear wall of one the 3rd air chamber 28, so that second air chamber 27 and the 3rd air chamber 28 are communicated with, in addition, first pore 242 passes ceramic distributor 24.
In addition, the external peripheral surface of ceramic distributor 24 is provided with a nozzle bearing 29.
Formed the 3rd air chamber 28 between pottery distributor 24 and the nozzle bearing 29, it links to each other with the opposite side of first pore 242.
A plurality of second pores 243 are arranged on the sidewall of the 3rd air chamber 28.In addition, second pore 243 runs through ceramic distributor 24 and links to each other with plasma gas passage 245.
A plurality of the 3rd pores 244 are arranged, so that be communicated with on the antetheca of the 3rd air chamber 28 with the cooled gas path 246 that forms in the outside of welding torch precursor 30.In addition, the 3rd pore 244 runs through ceramic distributor 24.
Simultaneously, shown in Fig. 2 B, form a plurality of pores 222 on the cylindrical of the electrode support 22 that close electrode 21 is provided with.In addition, pore 222 is parallel to each other with the angle of determining.
Therefore, gas flows into first air chamber 26, and flows into second air chamber 27 through air passing hole 222.
Simultaneously, the inner of electrode 21 is provided with one and presses hafnium spare 211, in order to the wearing and tearing that prevent electrode 21 with break.
In addition, at the electrode front end nozzle 23 is set, it is used for spraying forward the gas from plasma gas passage 245.
In addition, nozzle bearing 29 is provided with a protective cap 25 with the outside of nozzle 23, and it is used for the effect that obtains to cool off by the outer surface that forces from the gas flow nozzle 23 of cooled gas path 244 and protection nozzle 23.
Simultaneously, lead-in cable 35 links to each other with the outer surface of nozzle bearing 29, and and protective cap 25 between keep one section predetermined distance.
Now set forth the operation of this plasma cutting torch with reference to the accompanying drawings.
Beginning, when Compressed Gas flowed into first air chamber 26 by the person in charge 34, this gas was through flowing into the inner of electrode 21 at the gas passage 221 of 22 li formation of electrode support.
After this, this gas flows into second air chamber through a plurality of pores 222 that form on electrode support 22 circumference.
At this moment,, can flow to equably on the electrode 21, thereby make electrode 21 coolings so flow into the gas of pore 222 because these pores 222 are parallel to each other with the angle of determining.
Then, flow to a plurality of pores 242 inflows three air chamber 28 of gas through forming in the ceramic distributor 24 at electrode rear portion.
The gas that flows into the 3rd air chamber 28 flows into plasma gas passage 245 and cooled gas path 246 through second pore 243 and the 3rd pore 244.
Respectively plasma gas by second pore 243 and the 3rd pore 244 and the expulsion pressure between the refrigerating gas than and injection rate be respectively 3.5Kgf/cm
2, 20l/min and 4.5～5.0Kgf/cm
2, 150l/min.
When gas flowed into cooled gas path 246 and plasma gas passage 245 through second pore 243 and the 3rd pore 244, the gas pressure in the nozzle increased, and reduces, and increases again, goes down successively, thereby increases because of efficient cooling the service life of nozzle.
In addition, gas can more stably produce plasma arc by above-mentioned compression and expansion, and therefore insulation effect increases between electrode and the nozzle.
Introduce the electric arc heated of gas by producing of plasma gas passage 245, and be mapped on the workpiece, thereby make the workpiece fusion by nozzle by electrode 21.
Simultaneously, the gas of introducing cooled gas path 246 flows into the interval that forms between protective cap 25 and the nozzle 23, makes nozzle cool off and remove the melt substance of the workpiece that is formed by plasma gas.
In addition, because plasma gas is by electrode next door circulation, the pressure of electrode surface reduces, and gas guides the pressure hafnium spare 211 that forms on electrode surface, thereby can prevent the irregular wear of electrode and breaking of electrode support and nozzle.
That is, the result is that gas follows these steps to be introduced into plasma cutting-torch and play a role therein: the first step is that gas is responsible for the inside that is introduced into the torch precursor through one; Second step was that this gas is introduced one first air chamber from the inside of torch precursor; The 3rd step was that gas enters second air chamber from this first air chamber through a plurality of pores that an electrode suppor forms, and made gas form circulation; The 4th step was that gas is introduced one the 3rd air chamber from this second air chamber; The 5th step was that gas flows into the inside of a nozzle and the outside of this nozzle by a plasma gas passage and a cooled gas path respectively, gas is introduced into a plurality of second pores that are communicated with the 3rd air chamber and this plasma gas passage and pass a distributor, and gas is introduced into a plurality of the 3rd pores that are communicated with the 3rd air chamber and this cooled gas path and pass this distributor; The 6th step was that gas pressure alternately increases/reduces; The 7th step was to introduce the gas of plasma gas passage because the electric arc of electrode generation becomes high-temperature plasma gas, and by nozzle ejection to a workpiece; With the 8th step is to introduce the gas cooled nozzle of cooling duct and remove the melt substance on workpiece that produces in welding cutting work.
In this embodiment of the present invention, suppose that native system provides the electric current of 60A.
As mentioned above, the purpose of this plasma cutting-torch and gas introducing method is the rising that prevents the electrode surface temperature by cooling electrode, prevent the minimizing in the service life of the electrode that causes owing to metal gasification, and prevent to cause producing unstable arc owing to the material of high-temperature oxydation.
In addition, because a plurality of pores of parallel at a predetermined angle formation on the excircle of electrode support, so under the acting in conjunction of gas swirl, can more be easy to generate electric arc, and can cooling jet by gases at high pressure are flow to nozzle outer surface, like this, the heat of plasma can concentrate on the workpiece.
And, owing to suitably a certain amount of plasma gas and refrigerating gas are separated by distributor, and the insulation between electrode and the nozzle is improved, and can prolong the service life of electrode and nozzle.
Though disclosed most preferred embodiment of the present invention for illustrative purposes, it will be understood by those of skill in the art that under the situation that does not break away from the described spirit and scope of appended claim of the present invention, can make various modifications, replenish and replace.
Claims (7)
1, a kind of plasma arc cutting torch comprises:
One torch precursor, it has an electrode of the nozzle that is arranged on its front portion and the portion that sets within it;
One is arranged on the person in charge at rear portion under this torch precursor, and this person in charge is connected with torch precursor inside;
An electrode support, it is arranged in the torch precursor and is connected with this electrode, and forms a plurality of pores on this electrode support, and this pore parallels with same direction;
First air chamber that is formed between this torch precursor rear portion and this electrode support;
A gas passage that is formed in the electrode support;
Second air chamber that is formed between this electrode support and this electrode inboard;
A distributor that is arranged between torch precursor inwall and the electrode outer surface;
A nozzle bearing that is located at the preceding outer surface of this distributor;
The 3rd air chamber that is formed between this nozzle bearing and this distributor;
A plasma gas passage that is formed between distributor predetermined portions and the electrode outer surface;
A protective cap that is located at the preceding outside of this nozzle bearing;
Cooled gas path between the inner surface of an outer surface that is formed on this nozzle and this protective cap; With
A pilot cable that is connected to the outer surface of nozzle bearing.
2, cutting torch according to claim 1, wherein, described distributor has a plurality of first pores, and this first pore links to each other with the 3rd air chamber with this second air chamber respectively, and described first pore leads to this distributor.
3, cutting torch according to claim 1, wherein, described distributor has a plurality of second pores, and this second pore links to each other with described plasma gas passage with the 3rd air chamber respectively, and described second pore connects this distributor; And a plurality of the 3rd pores, the 3rd pore links to each other with this cooled gas path with the 3rd air chamber.
4, cutting torch according to claim 1, wherein, described electrode comprises a pressure hafnium spare that is arranged on its front end.
5, cutting torch according to claim 1, wherein, described distributor is made with pottery.
6, cutting torch according to claim 1, wherein, described plasma gas and the ratio between the described refrigerating gas outside this nozzle interior is guided this torch precursor into are 20l/min, 3.5Kgf/cm
2And 150l/min, 4.5～5.0Kgf/cm
2
7, cutting torch according to claim 1, wherein, the pressure of the gas that ejects from described plasma gas passage and described cooled gas path alternately increases and reduces.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940033682A KR100349788B1 (en) | 1993-12-13 | 1994-12-12 | A memory cell and a memory device having reduced soft error and a method of reducing soft error |
| KR33682/94 | 1994-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1131598A true CN1131598A (en) | 1996-09-25 |
Family
ID=19401006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95121544 Pending CN1131598A (en) | 1994-12-12 | 1995-12-12 | Plasma arc cutting torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1131598A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952075A (en) * | 2008-12-22 | 2011-01-19 | 海别得公司 | Use the high quality holes cutting of variable shroud gas composition |
| CN102744507A (en) * | 2012-08-13 | 2012-10-24 | 常州机电职业技术学院 | Plasma cutting torch nozzle |
| WO2013097775A1 (en) * | 2012-01-01 | 2013-07-04 | Liu Yingchun | Plasma welding cutting gun |
| CN104602432A (en) * | 2015-02-05 | 2015-05-06 | 成都真火科技有限公司 | Self-cooled anode plasma source |
| CN104602431A (en) * | 2015-02-05 | 2015-05-06 | 成都真火科技有限公司 | Laminar plasma jet stabilizing method |
| CN104919902A (en) * | 2013-07-25 | 2015-09-16 | 海别得公司 | Devices for gas cooling plasma arc torches and related systems and methods |
| CN105025647A (en) * | 2014-04-16 | 2015-11-04 | 馗鼎奈米科技股份有限公司 | Plasma device |
| CN106001877A (en) * | 2016-07-19 | 2016-10-12 | 上海通用重工集团有限公司 | Air plasma cutting machine |
| CN107073635A (en) * | 2014-11-05 | 2017-08-18 | 株式会社电装 | Arc-welding apparatus |
| CN107454730A (en) * | 2016-04-11 | 2017-12-08 | 海别得公司 | Plasma arc cutting systems and relevant operation method including the ring that circles round |
| 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 |
| CN114025462A (en) * | 2021-11-23 | 2022-02-08 | 上海翰逸环保科技有限公司 | High-voltage alternating current arc plasma torch device |
-
1995
- 1995-12-12 CN CN 95121544 patent/CN1131598A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952075A (en) * | 2008-12-22 | 2011-01-19 | 海别得公司 | Use the high quality holes cutting of variable shroud gas composition |
| CN101952075B (en) * | 2008-12-22 | 2015-04-08 | 海别得公司 | High-quality hole cutting using variable shield gas compositions |
| WO2013097775A1 (en) * | 2012-01-01 | 2013-07-04 | Liu Yingchun | Plasma welding cutting gun |
| CN102744507A (en) * | 2012-08-13 | 2012-10-24 | 常州机电职业技术学院 | Plasma cutting torch nozzle |
| CN104919902A (en) * | 2013-07-25 | 2015-09-16 | 海别得公司 | Devices for gas cooling plasma arc torches and related systems and methods |
| US10716199B2 (en) | 2013-07-25 | 2020-07-14 | Hypertherm, Inc. | Devices for gas cooling plasma arc torches and related systems and methods |
| CN104919902B (en) * | 2013-07-25 | 2017-10-03 | 海别得公司 | Device and related system and method for gas cooling plasma welding torch |
| CN105025647A (en) * | 2014-04-16 | 2015-11-04 | 馗鼎奈米科技股份有限公司 | Plasma device |
| CN107073635A (en) * | 2014-11-05 | 2017-08-18 | 株式会社电装 | Arc-welding apparatus |
| CN107073635B (en) * | 2014-11-05 | 2019-04-23 | 株式会社电装 | Arc-welding apparatus |
| CN104602432A (en) * | 2015-02-05 | 2015-05-06 | 成都真火科技有限公司 | Self-cooled anode plasma source |
| CN104602431A (en) * | 2015-02-05 | 2015-05-06 | 成都真火科技有限公司 | Laminar plasma jet stabilizing method |
| CN108135068A (en) * | 2016-04-11 | 2018-06-08 | 海别得公司 | Plasma arc cutting systems and associated methods of operation including holding cap |
| CN107454730A (en) * | 2016-04-11 | 2017-12-08 | 海别得公司 | Plasma arc cutting systems and relevant operation method including the ring that circles round |
| CN107454730B (en) * | 2016-04-11 | 2020-03-03 | 海别得公司 | Plasma arc cutting system including a swivel ring and related method of operation |
| CN106001877A (en) * | 2016-07-19 | 2016-10-12 | 上海通用重工集团有限公司 | Air plasma cutting machine |
| 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 |
| CN114025462A (en) * | 2021-11-23 | 2022-02-08 | 上海翰逸环保科技有限公司 | High-voltage alternating current arc plasma torch device |
| CN114025462B (en) * | 2021-11-23 | 2024-04-19 | 上海翰逸环保科技有限公司 | High-voltage alternating-current arc plasma torch device |
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