CN103990899A - Cutting torch nozzle of plasma cutting machine and manufacturing method thereof - Google Patents
Cutting torch nozzle of plasma cutting machine and manufacturing method thereof Download PDFInfo
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- CN103990899A CN103990899A CN201410238795.XA CN201410238795A CN103990899A CN 103990899 A CN103990899 A CN 103990899A CN 201410238795 A CN201410238795 A CN 201410238795A CN 103990899 A CN103990899 A CN 103990899A
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- nozzle
- vacuum
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- cutting
- nozzle body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention discloses a cutting torch nozzle of a plasma cutting machine and a manufacturing method of the cutting torch nozzle. The cutting torch nozzle comprises a nozzle body. The front end of the nozzle body is provided with a pressure angle and a hole passage. Composite coatings are arranged on the outer surface of the pressure angle and the outer surface of the hole passage. The manufacturing method comprises the steps that composite vacuum plasma TiAlN coating processing is adopted, and after the technological processes of glow discharge of working gas, ion bombardment on the surface of target material and formation of plasma, Al2O3 protective films, namely the composite coatings, are formed. The cutting torch nozzle has the advantages of being not prone to burning loss and long in cutting life. In the cutting process, the high-temperature burning loss resistance is greatly improved, and then the burning loss resistance time of the nozzle body is prolonged. Accordingly, the cutting life is prolonged, and production cost is greatly lowered.
Description
Technical field
The present invention relates to a kind of preventer for cutting torch of plasma cutting machine nozzle, also relate to the preparation method of this CUT nozzle of cutting torch.
Background technology
Preventer for cutting torch of plasma cutting machine nozzle is the consumable accessory in plasma cutting machines, the material that existing nozzle uses is alloyed copper material, the thermal diffusivity of nozzle is directly proportional with the electric conductivity of alloyed copper, no matter but be that the nozzle which kind of cathode copper is made all exists following shortcoming: 1, cathode copper is oxidizable when hot operation, and the duct part of spray nozzle front end is because of the easy scaling loss of excess Temperature; 2, nozzle duct article on plasma gas flow rate and the stability of scaling loss have harmful effect, and nozzle cutting life is short; 3, nozzle outer surface is because being subject to temperatures involved oxidizable in cutting process, and slag or adhering metal particle be on it, easily like this causes circle and produce two arcs and cause nozzle scaling loss of nozzle oral area, thereby affects the cutting life of cut quality and nozzle.
Summary of the invention
The object of the present invention is to provide a kind of scaling loss, long plastic cutting burner of cutting life of being difficult for, this nozzle can effectively save production cost and enhance productivity.
For achieving the above object, plastic cutting burner of the present invention, comprises nozzle body, and the front end of described nozzle body is provided with pressure angle and duct, is provided with composite coating at the outer surface in pressure angle and duct.
Another object of the present invention is to provide the preparation method of above-mentioned plastic cutting burner, comprises the steps:
A coating chamber vacuumizes: by high-vacuum molecular pump and the lobe pump of direct pumped vacuum systems, adopt two-stage vacuum pump to vacuumize, vacuum is not more than 1.0 × 10-3 Pa; In coating chamber, be provided with radiant tube type heater and thermocouple, rake thin aluminum titanium alloy is located at the arc evaporation source of coating chamber surrounding and uses;
The glow discharge of b working gas: get in the coating chamber that working gas passes into a step, using nozzle body as negative electrode and vacuum-chamber wall under the electric field of anode, in vacuum chamber, produce aura; Electronics moves to positive pole, and cation moves to negative pole, and ion and electronics energy in the process of motion increases, and produces aura continuous discharge;
C Ions Bombardment target material surface: by the effect of electric field, there is kinetic energy after the charged ion of b step accelerates in electric field, guide ion into target aluminum titanium alloy;
D-shaped becomes plasma: c step into the ion penetrated with the process of the surface collision of target aluminum titanium alloy in, the atom being spilt departs from rake thin aluminum titanium alloy solid and enters vacuum, forms plasma;
Gas ions orientated deposition under vacuum ring that e forms composite coating: d step, to loading on back bias voltage nozzle body, by cathode material absorption, heap, row core and the film forming of growing up, forms composite coating;
Wherein, described working gas is nitrogen, and its purity is not less than 99.99%;
Described aluminum titanium alloy is commercial titanium alloy, and wherein aluminium is containing 30%, and titanium is containing 70%.
The thickness of described composite coating 4 is 2-7um.
In technique scheme, because the outer surface in the pressure angle at nozzle body and duct forms composite coating TiAlN, composite coating TiAlN is formed to close, complete Al2O3 diaphragm, improves the high-temperature oxidation resistance of nozzle body; Meanwhile, the fusing point of diaphragm Al2O3 is that 2050 DEG C, boiling point are 2980 DEG C, and the fusing point of copper be 1084 DEG C, boiling point is 2567 DEG C, 89% of high copper fusing point.Nozzle, in cutting process, improves the ability of nozzle body high temperature resistance scaling loss like this, and then the scaling loss time of prolonging nozzle body, thereby effectively improves the cutting life of nozzle, greatly reduces production costs.
Brief description of the drawings
Fig. 1 is the structural representation of preventer for cutting torch of plasma cutting machine nozzle of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, preventer for cutting torch of plasma cutting machine nozzle of the present invention is described in further detail.
As seen from Figure 1, preventer for cutting torch of plasma cutting machine nozzle of the present invention, comprises nozzle body 1, and the front end of described nozzle body 1 is provided with pressure angle 2 and duct 3, is provided with composite coating 4 at the outer surface in pressure angle 2 and duct 3.
The preparation method of preventer for cutting torch of plasma cutting machine nozzle of the present invention comprises the steps:
A coating chamber vacuumizes: by high-vacuum molecular pump and the lobe pump of direct pumped vacuum systems, adopt two-stage vacuum pump to vacuumize, vacuum is not more than 1.0 × 10-3 Pa; In coating chamber, be provided with radiant tube type heater and thermocouple, the arc evaporation source that is located at coating chamber surrounding containing the rake thin aluminum titanium alloy of 30% aluminium and 70% titanium is used;
The glow discharge of b working gas: get purity and be not less than in the coating chamber that 99.99% nitrogen passes into a step, using nozzle body 1 as negative electrode and vacuum-chamber wall under the electric field of anode, in vacuum chamber, produce aura; Electronics moves to positive pole, and cation moves to negative pole, and ion and electronics energy in the process of motion increases, and produces aura continuous discharge;
C Ions Bombardment target material surface: by the effect of electric field, there is kinetic energy after the charged ion of b step accelerates in electric field, guide ion into rake thin aluminum titanium alloy containing 30% aluminium and 70% titanium;
D-shaped becomes plasma: c step into the ion penetrated with the process of the surface collision of the rake thin aluminum titanium alloy containing 30% aluminium and 70% titanium in, the atom being spilt departs from rake thin aluminum titanium alloy solid and enters vacuum, forms plasma;
Gas ions orientated deposition under vacuum ring that e forms composite coating: d step, to loading on back bias voltage nozzle body 1, by cathode material absorption, heap, row core and the film forming of growing up, forms composite coating.
In above-mentioned preparation method, by radiant tube type heater and thermocouple are set in coating chamber, with 220 DEG C ± 10 DEG C temperature that ensure that coating formation is required, during by adjustment work, DC current size is controlled temperature.
In the present embodiment, described composite coating 4 adopts the processing of composite evacuated plasma TiAlN coating, because TiAlN has higher hardness, heat resistanceheat resistant, antioxygenic property, be applicable to the working environment of high temperature, and in TiAlN, the difference of Al atomic radius and Ti atomic radius is very little, Al atom has replaced the Ti of the portion atom of the center of area in TiN face-centred cubic structure, whole lattice is distorted, crystal boundary increases, lattice refinement.Simultaneously, along with the variation of Al constituent content in coating, when treatment temperature is during higher than 800 DEG C, in TiAlN coating except O atom to coating diffusion inside, Al element is combined with surperficial O atom to external diffusion and is formed Al2O3, improves like this high-temperature oxidation resistance of nozzle body 1 to close, complete Al2O3 diaphragm; In addition, the fusing point of Al2O3 is that 2050 DEG C, boiling point are 2980 DEG C, and the fusing point of copper be 1084 DEG C, boiling point is 2567 DEG C, 89% of high copper fusing point.Therefore, the life-span of nozzle of the present invention will be improved 2 times than not processing nozzle life on market, effectively saves production cost and increases economic efficiency.
In the present embodiment, the thickness of described composite coating 4 is 2-7um, improves the heat-resisting ability of nozzle body 1; Meanwhile, can also ensure the heat transfer performance of nozzle body 1 matrix material.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.
Claims (3)
1. a preventer for cutting torch of plasma cutting machine nozzle, comprise nozzle body (1), it is characterized in that: the front end of described nozzle body (1) is provided with pressure angle (2) and duct (3), be provided with composite coating (4) at the outer surface of pressure angle (2) and duct (3).
2. the preparation method of preventer for cutting torch of plasma cutting machine nozzle according to claim 1 comprises the steps:
A coating chamber vacuumizes: by high-vacuum molecular pump and the lobe pump of direct pumped vacuum systems, adopt two-stage vacuum pump to vacuumize, vacuum is not more than 1.0 × 10-3 Pa; In coating chamber, be provided with radiant tube type heater and thermocouple, rake thin aluminum titanium alloy is located on the arc evaporation source of coating chamber surrounding;
The glow discharge of b working gas: get in the coating chamber that working gas passes into a step, using nozzle body (1) as negative electrode and vacuum-chamber wall under the electric field of anode, in vacuum chamber, produce aura; Electronics moves to positive pole, and cation moves to negative pole, and ion and electronics energy in the process of motion increases, and produces aura continuous discharge;
C Ions Bombardment target material surface: by the effect of electric field, there is kinetic energy after the charged ion of b step accelerates in electric field, guide ion into target aluminum titanium alloy;
D-shaped becomes plasma: c step into the ion penetrated with the process of the surface collision of target aluminum titanium alloy in, the atom being spilt departs from rake thin aluminum titanium alloy solid and enters vacuum, forms plasma;
The gas ions that e forms composite coating: d step under vacuum ring orientated deposition to loading on back bias voltage nozzle body (1), by cathode material absorption, heap, row core and the film forming of growing up, form composite coating (4), obtain preventer for cutting torch of plasma cutting machine nozzle of the present invention;
Wherein, described working gas is nitrogen, and its purity is not less than 99.99%;
Described aluminum titanium alloy is industrially pure titanium alloy, and wherein aluminium is containing 30%, and titanium is containing 70%.
3. according to the preventer for cutting torch of plasma cutting machine nozzle described in right 1, it is characterized in that: the thickness of described composite coating (4) is 2-7um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238795.XA CN103990899A (en) | 2014-06-03 | 2014-06-03 | Cutting torch nozzle of plasma cutting machine and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238795.XA CN103990899A (en) | 2014-06-03 | 2014-06-03 | Cutting torch nozzle of plasma cutting machine and manufacturing method thereof |
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| CN103990899A true CN103990899A (en) | 2014-08-20 |
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| CN201410238795.XA Pending CN103990899A (en) | 2014-06-03 | 2014-06-03 | Cutting torch nozzle of plasma cutting machine and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031964A (en) * | 2015-03-12 | 2016-10-19 | 深圳市瑞凌实业股份有限公司 | A nozzle |
| CN108714735A (en) * | 2018-08-11 | 2018-10-30 | 刘冠诚 | A kind of flame passes diffusion nozzle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04367377A (en) * | 1991-06-11 | 1992-12-18 | Brother Ind Ltd | Plasma arc cutting device |
| JPH07136767A (en) * | 1993-11-17 | 1995-05-30 | Koike Sanso Kogyo Co Ltd | Plasma torch and hood |
| US5885316A (en) * | 1996-11-25 | 1999-03-23 | Fuji Photo Optical Co., Ltd. | Nozzle tip for glass injection cartridge |
| CN1962926A (en) * | 2005-11-08 | 2007-05-16 | 中国科学院金属研究所 | Metal materials protection method (2) |
| CN1962947A (en) * | 2005-11-08 | 2007-05-16 | 中国科学院金属研究所 | Metal materials protection method (1) |
| CN101316676A (en) * | 2005-09-30 | 2008-12-03 | 菲尼克斯解决方案股份有限公司 | Plasma torch with corrosive protected collimator |
| CN103143826A (en) * | 2013-03-19 | 2013-06-12 | 安徽西锐重工科技有限公司 | Spray nozzle of plasma cutting torch |
-
2014
- 2014-06-03 CN CN201410238795.XA patent/CN103990899A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04367377A (en) * | 1991-06-11 | 1992-12-18 | Brother Ind Ltd | Plasma arc cutting device |
| JPH07136767A (en) * | 1993-11-17 | 1995-05-30 | Koike Sanso Kogyo Co Ltd | Plasma torch and hood |
| US5885316A (en) * | 1996-11-25 | 1999-03-23 | Fuji Photo Optical Co., Ltd. | Nozzle tip for glass injection cartridge |
| CN101316676A (en) * | 2005-09-30 | 2008-12-03 | 菲尼克斯解决方案股份有限公司 | Plasma torch with corrosive protected collimator |
| CN1962926A (en) * | 2005-11-08 | 2007-05-16 | 中国科学院金属研究所 | Metal materials protection method (2) |
| CN1962947A (en) * | 2005-11-08 | 2007-05-16 | 中国科学院金属研究所 | Metal materials protection method (1) |
| CN103143826A (en) * | 2013-03-19 | 2013-06-12 | 安徽西锐重工科技有限公司 | Spray nozzle of plasma cutting torch |
Non-Patent Citations (2)
| Title |
|---|
| 张黔等: "《表面强化技术基础》", 30 November 1996, 华中理工大学出版社 * |
| 钱苗根等，: "《现代表面技术》", 31 August 2004, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031964A (en) * | 2015-03-12 | 2016-10-19 | 深圳市瑞凌实业股份有限公司 | A nozzle |
| CN108714735A (en) * | 2018-08-11 | 2018-10-30 | 刘冠诚 | A kind of flame passes diffusion nozzle |
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Application publication date: 20140820 |