CN106944728B - A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type - Google Patents
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type Download PDFInfo
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- CN106944728B CN106944728B CN201710366212.5A CN201710366212A CN106944728B CN 106944728 B CN106944728 B CN 106944728B CN 201710366212 A CN201710366212 A CN 201710366212A CN 106944728 B CN106944728 B CN 106944728B
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- anode
- pipette tips
- nozzle
- cathode
- water cooling
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Classifications
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- 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
- B23K10/02—Plasma welding
-
- 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
- B23K10/02—Plasma welding
- B23K10/027—Welding for purposes other than joining, e.g. build-up welding
Abstract
The invention discloses a kind of miniature small Hole plasma welding rifles of depth, belong to plasma spray welding gun technical field.A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, including anode pipette tips, with the cathode pipette tips and nozzle being embedded in anode pipette tips, insulation sleeve is provided between the anode pipette tips and cathode pipette tips, there is waterway between the anode pipette tips and nozzle, and the anode cooling water access way being connected to waterway is offered in anode pipette tips, interconnected anode pipette tips powder feeding gas channel and nozzle powder feeding gas channel are offered in the anode pipette tips and nozzle respectively, is also provided with interconnected anode pipette tips ion-gas channel and nozzle ion-gas channel.Structure of the invention compact and reasonable, it is practical, the anode of plasma spray welding gun and cathode can direct water-cooling, good heat dissipation effect, it can be realized plasma spray welding gun long-time continuous sequence under high temperature operating conditions, can be applied to the welding of the workpiece depth inner hole of diameter < 36mm.
Description
Technical field
The present invention relates to a kind of miniature small Hole plasma welding rifles of depth, the especially a kind of small inner hole of miniature depth of full water cooling type
Plasma spray welding gun belongs to plasma spray welding gun technical field.
Background technique
With advances in technology, the anti-corrosion of piece surface, wearability are required at present also higher and higher.Such as steam turbine
Part containing diameter of bore < 40mm in filling valve, inner surface need one layer of antifriction anticorrosion alloy of cladding, can pass through
Ion spray weld alloy powder technology is produced.But current the smallest small inner hole deep hole plasma spray welding gun (patent
CN200810147856.6) can only surfacing diameter of bore >=36mm workpiece, for the component of deep diameter of bore < 36mm, nothing
Method carries out welding, and its cathode, anode cooling effect are bad, can not continuous sequence at high temperature for a long time；The plasma spray
Rifle is bad due to radiating, and cathode easily generates heat, and nozzle is damaged because water cooling is bad, and sealing ring is poorly sealed at high temperature, causes
Plasma spray welding gun is set the case where leak occur.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of miniature depth of full water cooling type small inner hole
Plasma spray welding gun, structure of the invention compact and reasonable is practical, and the anode and cathode of plasma spray welding gun being capable of direct water
Cold, good heat dissipation effect can be realized plasma spray welding gun long-time continuous sequence under high temperature operating conditions, so as to reduce
The connector quantity of overlay cladding usually can disposably complete inner hole of workpiece surfacing, guarantee welding quality, can be applied to diameter
< 36mm's, the welding of the workpiece depth inner hole of especially diameter < 26mm.
The technical solution adopted by the invention is as follows:
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type, including anode pipette tips, and be embedded in anode pipette tips
Cathode pipette tips and nozzle, insulation sleeve is provided between the anode pipette tips and cathode pipette tips, is had between the anode pipette tips and nozzle
There is waterway, and offers the anode cooling water access way being connected to waterway, the anode pipette tips and spray in anode pipette tips
Interconnected anode pipette tips powder feeding gas channel and nozzle powder feeding gas channel are offered in mouth respectively, is also provided with interconnected
Anode pipette tips ion-gas channel and nozzle ion-gas channel.Anode pipette tips are isolated with cathode pipette tips mutually insulated in insulation sleeve；Water
The design of cold chamber and anode cooling water access way can be such that cooling water contacts with the direct of nozzle large area, be conducive to anode
The heat dissipation of the heat dissipation of pipette tips, especially nozzle can be improved the service life of plasma spray welding gun, enable plasma spray welding gun
Long-time continuous sequence.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention is set with cathode in the cathode pipette tips
Water pipe, and there is gap between cathode water pipe and cathode pipette tips, which is connected to form cooled cathode water with the inner cavity of cathode water pipe
Access way.As cathode intake tunnel, the gap between cathode water pipe and cathode pipette tips goes out as cathode for the inner cavity of cathode water pipe
Aquaporin.Make between cathode pipette tips can direct water-cooling, be conducive to cathode pipette tips and the components that are assembled in cathode pipette tips dissipate
Heat, it is further to guarantee that plasma spray welding gun long-time continuous sequence.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention is equipped with negative electricity in the cathode pipette tips
Pole, and in the insertion nozzle ion-gas channel of negative electrode one end.
Further, electrode tip holder is set in the negative electrode, negative electrode is assemblied in cathode pipette tips by electrode tip holder.Just
In negative electrode is assemblied in cathode pipette tips.
Further, pilot hole is offered in the anode pipette tips, pilot hole is located above negative electrode.Convenient for the dress of nozzle
Match, and convenient for the installation and removal of negative electrode, convenient for the replacement of negative electrode.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, the anode cooling water access way packet
Anode intake tunnel and anode exhalant canal are included, anode pipette tips end is provided with water cooling chamber, the anode intake tunnel, water
Cold chamber, water cooling chamber are sequentially connected in series with anode exhalant canal and are connected to.The design of water cooling chamber can further improve anode pipette tips
Heat dissipation effect.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, the nozzle includes plasma nozzle,
Be located at plasma nozzle on the outside of powder feeding gas jets, the waterway between anode pipette tips and plasma nozzle, nozzle from
Sub- gas channel is located in plasma nozzle, and nozzle powder feeding gas channel is located in powder feeding gas jets.The seperated design of nozzle, convenient for spray
The manufacture and assembly of mouth are especially convenient for the assembly of plasma nozzle.
Further, the plasma nozzle is connect with anode pipette tips by welding manner, the powder feeding gas jets and sun
Pole pipette tips are connected by screw thread or welding manner.The welded connecting of plasma nozzle and anode pipette tips, it is ensured that waterway sealing, no
Leak.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention is also provided with powder in the anode pipette tips
Last mixing chamber, the anode pipette tips powder feeding gas channel are connected to by powder mixing chamber with nozzle powder feeding gas channel.Powder mixing chamber
Design be conducive to the powder of welding with the gas of conveying powder is full and uniform mixes, be conducive to powder uniformly enter it is molten
Pond.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, the anode pipette tips using diameter≤
The red copper bar of 26mm is made.Make the welding of the workpiece depth inner hole that can be applied to diameter < 36mm of the invention.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, it is compact-sized reasonable, it is practical,
The anode of plasma spray welding gun and cathode can direct water-cooling, good heat dissipation effect can be realized plasma spray welding gun in high temperature work
Long-time continuous sequence under the conditions of work usually can be disposably by inner hole of workpiece so as to reduce the connector quantity of overlay cladding
Surfacing is completed, and guarantees welding quality.
2, the Combination Design of cathode intake tunnel and cathode exhalant canal is conducive to cathode pipette tips and is assembled in cathode pipette tips
On components heat dissipation.
3, anode intake tunnel, waterway, water cooling chamber and anode exhalant canal Combination Design, be conducive to anode pipette tips and
The heat dissipation of nozzle.
4, the design of plasma nozzle and the welding connecting mode of anode pipette tips, it can be ensured that waterway sealing, it is water-tight,
Keep the present invention reliability and durability.
5, anode pipette tips use diameter for design made of the red copper bar of 12-26mm, make of the invention can be applied to
The welding of the deeply small interior internal surface of hole of the welding of the workpiece depth inner hole of diameter < 36mm, the especially workpiece of diameter < 26mm.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is a kind of structural schematic diagram of small Hole plasma welding rifle of the miniature depth of full water cooling type；
Fig. 2 is the cross-sectional view of the line A-A along Fig. 1；
Fig. 3 is the cross-sectional view of the line B-B along Fig. 1.
Marked in the figure: 1- anode pipette tips, 11- cover board, 2- insulation sleeve, 3- cathode pipette tips, 4- electrode tip holder, 5- negative electrode, 6-
Nozzle, 61- plasma nozzle, 62- powder feeding gas jets, a1- cathode intake tunnel, a2- cathode exhalant canal, the water inlet of b1- anode
Channel, b2- waterway, the water cooling chamber b3-, b4- anode exhalant canal, c1- anode pipette tips powder feeding gas channel, c2- powder mixing chamber,
C3- nozzle powder feeding gas channel, d1- anode pipette tips ion-gas channel, d2- nozzle ion-gas channel, e- pilot hole.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
As shown in Figure 1 to Figure 3, a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the present embodiment, including sun
Pole pipette tips 1, and the cathode pipette tips 3 and nozzle 6 that are embedded in anode pipette tips 1, are arranged between the anode pipette tips 1 and cathode pipette tips 3
There is insulation sleeve 2, there is waterway b2 between the anode pipette tips 1 and nozzle 6, and offers in anode pipette tips 1 and connect with waterway b2
Logical anode cooling water access way offers interconnected anode pipette tips powder feeding in the anode pipette tips 1 and nozzle 6 respectively
Gas channel c1 and nozzle powder feeding gas channel c3 is also provided with interconnected anode pipette tips ion-gas channel d1 and nozzle ion-gas
Channel d2.Anode pipette tips 1 are isolated with 3 mutually insulated of cathode pipette tips in insulation sleeve 2；Waterway b2 and anode cooling water access way
Design, directly contacting for cooling water and 6 large area of nozzle can be made, be conducive to the heat dissipation of anode pipette tips 1, especially nozzle 6
Heat dissipation, can be improved the service life of plasma spray welding gun, enable plasma spray welding gun long-time continuous sequence.
Specifically, as shown in Figure 1, anode pipette tips 1 have eccentric macropore for assembling cathode pipette tips 3 in the radial direction,
And the bias macropore does not run through anode pipette tips 1, cathode pipette tips 3 are closely wrapped up by insulation sleeve 2, and insulation sleeve 2 is organic or inorganic
Insulating materials is made；2 cathode pipette tips 3 of insulation sleeve are set with to be embedded in eccentric macropore.Have in 1 vertical direction of anode pipette tips and uses
In the bottom outlet of assembling nozzle 6, bottom outlet is perpendicular with eccentric macropore and is connected to, and nozzle 6 is embedded in bottom outlet.
Specifically, waterway b2 is ring-type, it is surrounded on 6 outer wall of nozzle；Nozzle powder feeding gas channel c3 is annular array distribution
Powder feeding hole or powder delivery groove, uniformly enter molten bath convenient for powder.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1 to Figure 3, the cathode pipette tips
It is set with cathode water pipe 31 in 3, and there is gap between cathode water pipe 31 and cathode pipette tips 3, the gap is interior with cathode water pipe 31
Chamber is connected to form cooled cathode water access way.The inner cavity of cathode water pipe 31 as cathode intake tunnel a1, cathode water pipe 31 with
3 gap is as cathode exhalant canal a2 between cathode pipette tips.Enable 3 direct water-coolings between cathode pipette tips, is conducive to cathode pipette tips 3
And it is assembled in the heat dissipation of the components in cathode pipette tips 3, it is further to guarantee that plasma spray welding gun long-time continuous sequence.
Specifically, as shown in Figure 1, the water outlet end of cathode water pipe 31 be angle or flat mouth shape, and the water outlet end of cathode water pipe 31 with
There are a certain distance between the inner face of cathode pipette tips 3.
Further optimization based on the present embodiment, in another embodiment, as depicted in figs. 1 and 2, the cathode pipette tips
Negative electrode 5 is equipped on 3, and in 5 one end of negative electrode insertion nozzle ion-gas channel d2.Specifically, negative electrode 5 is tungsten electrode；It is excellent
Choosing, negative electrode 5 is cerium tungsten electrode.Specifically, the perforative circular hole for assembling negative electrode is longitudinally offered in cathode pipette tips 3,
The circular hole is located at the surface of ion-gas channel d2, and is same axis with ion-gas channel d2, and negative electrode 5 is assemblied in circular hole
Interior, the tip of negative electrode 5 is located in nozzle ion-gas channel d2.
Further, in another embodiment, as depicted in figs. 1 and 2, it is set with electrode tip holder 4 in the negative electrode 5, yin
Electrode 5 is assemblied in cathode pipette tips 3 by electrode tip holder 4.Convenient for negative electrode 5 is assemblied in cathode pipette tips 3.Specifically, electrode
Seat 4 is made of red copper material, and electrode tip holder 4 is threadedly connect with cathode pipette tips 3, naturally it is also possible to is connected by screw bolts
Mode.
Further, in another embodiment, as depicted in figs. 1 and 2, pilot hole e is offered in the anode pipette tips 1,
Pilot hole e is located at 5 top of negative electrode.Convenient for the assembly of nozzle 6, and convenient for the installation and removal of negative electrode 5, it is convenient for negative electrode
5 replacement.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1 to Figure 3, the anode is cooling
Water access way includes anode intake tunnel b1 and anode exhalant canal b4, and 1 end of anode pipette tips is provided with water cooling chamber b3,
The anode intake tunnel b1, waterway b2, water cooling chamber b3 are sequentially connected in series with anode exhalant canal b4 and are connected to.Water cooling chamber b3's sets
Meter, can further improve the heat dissipation effect of anode pipette tips 1.Since nozzle 6 and plasma arc distance are nearest, therefore plasma spray
The heat radiation that nozzle 6 is subject in welding gun is most, also needs most protection, therefore cooling water first passes through the design of waterway b2, is conducive to
The heat dissipation of nozzle 6.Specifically, anode pipette tips 1 open up cavity close to the end face of nozzle 6, by organizing welding cap plate in anode pipette tips 1
11 seal cavity, to form water cooling chamber b3；The design structure is simple, it is easy to accomplish, greatly reduce the system of water cooling chamber b3
Make difficulty, while being also convenient for the processing of anode cooling water access way.
Further optimization based on the present embodiment, in another embodiment, as depicted in figs. 1 and 2, the nozzle 6 wraps
Plasma nozzle 61 is included, and the powder feeding gas jets 62 positioned at 61 outside of plasma nozzle, the waterway b2 are located at anode pipette tips 1
Between plasma nozzle 61, nozzle ion-gas channel d2 is located in plasma nozzle 61, and nozzle powder feeding gas channel c3 is located at powder feeding
In gas jets 62.The seperated design of nozzle 6 is especially convenient for the dress of plasma nozzle 61 convenient for the manufacture and assembly of nozzle 6
Match.
Further, in another embodiment, the plasma nozzle 61 is connect with anode pipette tips 1 by welding manner,
The powder feeding gas jets 62 are connect with anode pipette tips 1 by screw thread or welding manner.The weldering of plasma nozzle 61 and anode pipette tips 1
It connects in succession, it is ensured that waterway b2 sealing, it is water-tight.
Based on the above embodiment and the Combination Design of pilot hole, as shown in Figure 1, specifically, 61 groups of plasma nozzle first
Loaded in anode pipette tips 1, then by the design of pilot hole e very easily by 61 upper end of plasma nozzle and the weldering of 1 phase of anode pipette tips,
Then 61 lower end of plasma nozzle and 1 phase of anode pipette tips are welded, plasma nozzle 61 is welded in anode pipette tips 1 by realization, energy
Enough ensure that waterway b2 is sealed, it is water-tight；Powder feeding gas jets 62 are assemblied in 1 bottom of anode pipette tips by screw thread or welding manner again
Portion, to complete for nozzle 6 to be embedded in anode pipette tips 1.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1, in the anode pipette tips 1 also
Powder mixing chamber c2 is offered, the anode pipette tips powder feeding gas channel c1 passes through powder mixing chamber c2 and nozzle powder feeding gas channel c3
Connection.The design of powder mixing chamber c2 be conducive to the powder of welding with the gas of conveying powder is full and uniform mixes, be conducive to
Powder uniformly enters molten bath.
Further optimization based on the present embodiment, in another embodiment, the anode pipette tips 1 use diameter≤26mm
Red copper bar be made.Make the welding of the workpiece depth inner hole that can be applied to diameter < 36mm of the invention.Specifically, anode rifle
First 1 can be used diameter is made of 12mm red copper bar, can meet the inside built-up welding demand that diameter of bore is 22mm workpiece.Certainly
It can be using 18mm, 24mm or the red copper bar of other specifications, to meet the inner hole of workpiece demand of different size.If inner hole of workpiece is straight
When diameter >=36mm, then anode pipette tips 1 can be equally made of the red copper bar of larger specification on demand, also the same energy of the present invention
It is enough to be applicable in.
In conclusion using a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, compact-sized conjunction
Reason, it is practical, the anode of plasma spray welding gun and cathode can direct water-cooling, good heat dissipation effect can be realized plasma spray
Welding gun long-time continuous sequence under high temperature operating conditions usually can be primary so as to reduce the connector quantity of overlay cladding
Property inner hole of workpiece surfacing is completed, guarantee welding quality.
A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type of the invention, has filled up the micro- of diameter of bore < 36mm
The blank of full water cooling plasma spray welding gun used in the plasma spray of small interior deep hole.The present invention hot environment (such as temperature≤
500 DEG C) under depth small inner hole surfacing when anode, cathode good heat dissipation effect, and can be realized continuous for a long time in small inner hole
Welding, can for the component inner surface of deep diameter of bore < 36mm carry out powder plasma surfacing, can be used for outer circle, tiltedly
The powder plasma surfacing of the complex surfaces such as face, can also be used for wire feed bead welding in the high temperature environment.The plasma spray welding gun can
With for component surface surfacing or built-up welding corrosion-resistant alloy layer, to can also be used for steam turbine and gas turbine blades, partition etc. complicated
The accurate reparation of components.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (9)
1. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type, it is characterised in that: including anode pipette tips (1), and inlay
In in anode pipette tips (1) cathode pipette tips (3) and nozzle (6), be provided between the anode pipette tips (1) and cathode pipette tips (3) exhausted
Edge set (2) has waterway (b2) between the anode pipette tips (1) and nozzle (6), and offers and water cooling in anode pipette tips (1)
It is offered respectively in the anode cooling water access way that chamber (b2) is connected to, the anode pipette tips (1) and nozzle (6) interconnected
It is logical to be also provided with interconnected anode pipette tips ion-gas for anode pipette tips powder feeding gas channel (c1) and nozzle powder feeding gas channel (c3)
Road (d1) and nozzle ion-gas channel (d2)；
It is set with cathode water pipe (31) in the cathode pipette tips (3), and between having between cathode water pipe (31) and cathode pipette tips (3)
Gap, the gap are connected to form cooled cathode water access way with the inner cavity of cathode water pipe (31).
2. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 1, it is characterised in that: described
It is equipped in cathode pipette tips (3) negative electrode (5), and in negative electrode (5) one end insertion nozzle ion-gas channel (d2).
3. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 2, it is characterised in that: described
It is set in negative electrode (5) electrode tip holder (4), negative electrode (5) is assemblied on cathode pipette tips (3) by electrode tip holder (4).
4. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 2, it is characterised in that: described
Pilot hole (e) is offered in anode pipette tips (1), pilot hole (e) is located above negative electrode (5).
5. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 1, it is characterised in that: described
Anode cooling water access way includes anode intake tunnel (b1) and anode exhalant canal (b4), anode pipette tips (1) end
It is provided with water cooling chamber (b3), the anode intake tunnel (b1), waterway (b2), water cooling chamber (b3) and anode exhalant canal (b4)
It is sequentially connected in series connection.
6. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 1, it is characterised in that: described
Nozzle (6) includes plasma nozzle (61), and the powder feeding gas jets (62) being located on the outside of plasma nozzle (61), the waterway
(b2) between anode pipette tips (1) and plasma nozzle (61), nozzle ion-gas channel (d2) is located in plasma nozzle (61),
Nozzle powder feeding gas channel (c3) is located in powder feeding gas jets (62).
7. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 6, it is characterised in that: described
Plasma nozzle (61) is connect with anode pipette tips (1) by welding manner, and the powder feeding gas jets (62) and anode pipette tips (1) are logical
Cross screw thread or welding manner connection.
8. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 1, it is characterised in that: described
It is also provided with powder mixing chamber (c2) in anode pipette tips (1), the anode pipette tips powder feeding gas channel (c1) passes through powder mixing chamber
(c2) it is connected to nozzle powder feeding gas channel (c3).
9. a kind of small Hole plasma welding rifle of the miniature depth of full water cooling type according to claim 1, it is characterised in that: described
Anode pipette tips (1) are made of diameter≤26mm red copper bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710366212.5A CN106944728B (en) | 2017-05-23 | 2017-05-23 | A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type |
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| CN201710366212.5A CN106944728B (en) | 2017-05-23 | 2017-05-23 | A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type |
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| CN106944728B true CN106944728B (en) | 2019-07-02 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109382573A (en) * | 2017-08-10 | 2019-02-26 | 武汉华材表面科技有限公司 | Plasma beam pipette tips suitable for the processing of small-sized bore area |
| CN114633004A (en) * | 2022-02-14 | 2022-06-17 | 华南理工大学 | Powder feeding type circulating cooling nozzle and K-TIG (tungsten inert gas) special welding gun |
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| JPH01162578A (en) * | 1987-12-16 | 1989-06-27 | Kubota Ltd | Torch for powder plasma build-up welding |
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| CN104244557A (en) * | 2014-08-11 | 2014-12-24 | 北京交通大学 | Atmosphere protection coaxial powder feeding plasma gun |
| CN104308349A (en) * | 2014-11-18 | 2015-01-28 | 广东工业大学 | Powder plasma cladding welding torch for small inner hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01162578A (en) * | 1987-12-16 | 1989-06-27 | Kubota Ltd | Torch for powder plasma build-up welding |
| CN2083976U (en) * | 1990-12-26 | 1991-09-04 | 机械电子工业部哈尔滨焊接研究所 | Powdered plasma build-up welding gun |
| US6133542A (en) * | 1996-07-04 | 2000-10-17 | Castolin S.A. | Process for coating or welding easily oxidized materials and plasma torch for carrying out this process |
| CN101434000A (en) * | 2008-12-13 | 2009-05-20 | 东方电气集团东方汽轮机有限公司 | Small-interior diameter deep hole plasma spray welding gun |
| CN103008859A (en) * | 2011-09-28 | 2013-04-03 | 沈阳透平机械股份有限公司 | Method for reinforcing surface of water lubricating bearing of nucleus secondary pump |
| CN203484793U (en) * | 2013-10-21 | 2014-03-19 | 赵克勇 | Small-inner-bore plasma powder overlaying welding gun |
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| Publication number | Publication date |
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| CN106944728A (en) | 2017-07-14 |
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