CN106735803A - A kind of plasma arc powder surfacing rifle - Google Patents
A kind of plasma arc powder surfacing rifle Download PDFInfo
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- CN106735803A CN106735803A CN201710059019.7A CN201710059019A CN106735803A CN 106735803 A CN106735803 A CN 106735803A CN 201710059019 A CN201710059019 A CN 201710059019A CN 106735803 A CN106735803 A CN 106735803A
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- gun body
- powder
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- plasma arc
- gun
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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
- B23K10/027—Welding for purposes other than joining, e.g. build-up welding
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Abstract
The invention provides a kind of plasma arc powder surfacing rifle, belong to surfacing torch technical field.It solves the problems, such as that existing plasma arc powder surfacing rifle cooling effect is poor.This plasma arc powder surfacing rifle includes：Gun body, its is axially arranged；Nozzle, is provided with least two connectors in gun body, and the lower end of each connector passes through gun body and is threadedly connected on nozzle；Tungsten electrode, it is axially set in gun body and the front end of tungsten electrode is stretched into nozzle；Plasma channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface；Protection gas passage, it is penetrated and from gun body outer surface by being derived by gun body outer surface after gun body；Powder channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface；Cooling-water duct, it is penetrated gun body by the outer surface of gun body and is derived by gun body outer surface after nozzle interior circulation.This plasma arc powder surfacing rifle has the advantages that good cooling results, leads powder efficiency high.
Description
Technical field
The invention belongs to surfacing torch technical field, it is related to a kind of plasma arc powder surfacing rifle.
Background technology
Powder Plasma Bead Melding Technique has as a kind of method of surface peening by one layer in piece surface cladding
Piece surface is wear-resistant, decay resistance to improve for the alloy powder of property, so as to extend its service life.The technology has
Have the advantages that temperature is high, dilution rate is low, controllability good, be widely used in the row such as Aero-Space, ship, valve, mining machinery, screw rod
Industry.
Plasma arc powder surfacing rifle because to melt metal dust, the flame that produce temperature very high, due to wait from
Subarc has a compression, therefore its flame kernel temperature is up to 10000~50000K, and it is good cold that this requires that torch neck has
But performance.The current torch neck of main flow is to be threadedly coupled and mode connects for screw with the type of attachment of lower gun body.For example authorize public
Accuse a number new small endoporus plasma arc powder surfacing rifle a kind of disclosed in the utility model of CN203484793, it include upper cutting gun,
Insulator, lower gun body, three parts are cast as one by lengthening die casting gun body parcel, and the lower end of lower gun body is provided with nozzle and gas shield
Cover；Tungsten needle is fastened by tungsten needle clamp lock, through upper lower gun body；Water-cooling channel, annular powder passage, ring-like gas are provided with lower gun body
Passage is arranged from inside to outside successively；Lower gun body upper parallel is provided with tube cell passage, intake tunnel, exhalant canal and gas passage.
But there is following technical problem in the program：1st, the front end of the cooling duct in the technical scheme is not extended in nozzle, causes it
The high temperature produced during work causes nozzle variant, so as to influence the built-up welding effect of welding gun；2nd, in the technical scheme, screw is by lower
On through nozzle and be fixed on lower gun body so that the installing space that screw takes in nozzle, have compressed the cooling in nozzle
The installing space of tank, causes the cooling effect difference of nozzle and viscous powder phenomenon occurs.
In sum, it is not enough, it is necessary to design a kind of cooling effect in existing plasma arc powder surfacing rifle structure to solve
Plasma arc powder surfacing rifle that is good, leading powder efficiency high.
The content of the invention
The purpose of the present invention is directed to existing technology and there is above mentioned problem, it is proposed that a kind of good cooling results, lead powder effect
Rate plasma arc powder surfacing rifle high.
The purpose of the present invention can be realized by following technical proposal：A kind of plasma arc powder surfacing rifle, including：
Gun body, its is axially arranged；
Nozzle, its front end for being installed on gun body is provided with least two connectors in gun body, and the lower end of each connector is worn
Cross gun body and be threadedly connected on nozzle；
Tungsten electrode, it is axially set in gun body and the front end of tungsten electrode is stretched into nozzle；
Plasma channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface；
Protection gas passage, it is penetrated and from gun body outer surface by being derived by gun body outer surface after gun body；
Powder channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface, and the powder channel is two
Bar, two powder channels are respectively arranged at plasma channel both sides；
Cooling-water duct, it is penetrated gun body by the outer surface of gun body and is derived by gun body outer surface after nozzle interior circulation.
In a kind of above-mentioned plasma arc powder surfacing rifle, the gun body includes：
Upper cutting gun, the import of the plasma channel, powder channel and cooling-water duct may be contained within upper cutting gun；
Lower gun body, it is connected with upper cutting gun, and the plasma channel, powder channel and cooling-water duct are by lower rifle
Body is directed on nozzle, and the outlet of the cooling-water duct is arranged on lower gun body, protection gas is additionally provided with lower gun body and is led to
The import in road and the protection gas passage are set through lower gun body.
In a kind of above-mentioned plasma arc powder surfacing rifle, two connecting holes for running through lower gun body are offered on lower gun body,
The connector is respectively arranged in two connecting holes and the lower end of connector passes through connecting hole and is threadedly connected on nozzle.
In a kind of above-mentioned plasma arc powder surfacing rifle, the connector is screw, and two screws are symmetricly set in tungsten electrode
Both sides and screw lower end through connecting hole and being threadedly connected on nozzle.
In a kind of above-mentioned plasma arc powder surfacing rifle, the first air admission hole is offered in the upper surface of upper cutting gun, under
The first gas port communicated with the first air admission hole is offered in gun body, is offered in the middle part of nozzle through nozzle and is led with first
The first venthole that stomata is communicated, first air admission hole, the first gas port and the first venthole constitute the plasma (orifice) gas
Passage.
In a kind of above-mentioned plasma arc powder surfacing rifle, the second air admission hole is offered on lower gun body, on lower gun body
Offer the second gas port communicated with the second air admission hole, be provided with lower gun body protective cover and the protective cover and nozzle every
The outlet chamber outside connection is opened and is formed with, the outlet chamber is communicated with the second gas port, second air admission hole, second
Gas port and the outlet chamber composition protection gas passage.
In a kind of above-mentioned plasma arc powder surfacing rifle, two powder entering holes are offered on upper cutting gun, opened on lower gun body
Be provided with the one-to-one powder-guiding hole of two powder entering holes, two flour openings corresponding with two powder-guiding holes are offered on nozzle, it is described
Two flour openings are symmetricly set in the both sides of the first venthole, and two powder entering hole, two powder-guiding holes and two flour openings composition are described
Powder channel.
In a kind of above-mentioned plasma arc powder surfacing rifle, powder sleeve pipe is inserted with respectively in two powder entering holes.
In a kind of above-mentioned plasma arc powder surfacing rifle, inlet opening is offered in the outer surface of upper cutting gun, in upper cutting gun
It is upper to offer the first annular chamber communicated with inlet opening around tungsten electrode, the second annular compartment is offered on nozzle, in lower rifle
Apopore is offered on body, the inlet opening, first annular chamber, the second annular compartment and apopore are communicated and form described
Cooling-water duct.
In a kind of above-mentioned plasma arc powder surfacing rifle, chuck is set on upper cutting gun, it is fixed to be provided with lower gun body
Heart pipe, the tungsten electrode is arranged on chuck and centring tube, also, is covered with block in the upper end of tungsten electrode.
Compared with prior art, the present invention includes axially arranged gun body, and the lower end of gun body is provided with nozzle, also,
At least two connectors are provided with gun body, one end of connector from top to bottom through gun body and is threadedly connected on nozzle, subtracts
The small installing space of connector, so as to expand the free air space of the cooling-water duct in nozzle, improves the cooling effect of nozzle
Really, it is to avoid viscous powder phenomenon occurs in the powder channel in nozzle, and improve nozzle goes out powder efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the sectional view of A-A in Fig. 1.
Fig. 3 is the sectional view of B-B in Fig. 1.
Fig. 4 is the sectional view of C-C in Fig. 1.
Fig. 5 is the sectional view of D-D in Fig. 1.
Fig. 6 is the sectional view of E-E in Fig. 1.
Fig. 7 is the structural representation of nozzle in a preferred embodiment of the present invention.
Fig. 8 is the sectional view of nozzle in Fig. 7.
In figure, 100, upper cutting gun；110th, insulator；120th, lower gun body；130th, nozzle；140th, protective cover；150th, tungsten electrode；
210th, connecting hole；211st, screwed hole；220th, the first air admission hole；221st, the first gas port；222nd, the first venthole；223rd, UNICOM
Hole；230th, powder entering hole；231st, powder-guiding hole；232nd, flour opening；233rd, powder sleeve pipe；240th, the second air admission hole；241st, the second gas port；
242nd, outlet chamber；243rd, the first annular conical surface；244th, the second circular cone；250th, inlet opening；251st, first annular chamber；
252nd, the second annular compartment；253rd, apopore；300th, installation set；301st, the first installation portion；302nd, the second installation portion；310th, press from both sides
Head；320th, centring sleeve；321st, air slot；330th, block.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figures 1 to 6, this plasma arc powder surfacing rifle includes axially arranged gun body, is set in the front end of gun body
There is nozzle 130, pass through gun body and stretch into nozzle 130 in the axially arranged front end for having tungsten electrode 150 and tungsten electrode 150 in the middle part of gun body
It is interior.
Gun body and nozzle 130 are connected by screw between the two in the prior art, also, screw is arranged on nozzle 130
And one end of screw from bottom to top through nozzle 130 and is threadedly connected in gun body, the setting of screw ensure that nozzle 130 and rifle
The steadiness of both bodies connection, but, screw of the prior art is arranged on nozzle 130 so that be opened on nozzle 130
Bosh and flour opening 232 need to avoid screw, thus the limited working space of bosh and flour opening 232 and cause spray
The cooling effect of mouth 130 is poor, easily causes the generation that nozzle 130 glues powder and influences the service efficiency phenomenon of surfacing torch.
As shown in Fig. 6, Fig. 7, Fig. 8, in embodiments of the present invention, at least two are offered through rifle in the upper surface of gun body
The connecting hole 210 of body, is respectively arranged with corresponding connector in each connecting hole 210, the upper surface of nozzle 130 offer with
The corresponding screwed hole 211 of connector, the lower end of connector from top to bottom through gun body and is threadedly connected in screwed hole 211, is subtracted
Installing space of the connector on nozzle 130 in small, and expand the work of the cooling bath in nozzle 130 and flour opening 232
Space, improves the cooling effect of nozzle 130, it is to avoid viscous powder phenomenon occurs in the powder channel in nozzle 130, improves nozzle
130 go out powder efficiency.
Preferably, above-mentioned connector is that the quantity of screw and screw is two, and two screws are symmetricly set in tungsten electrode 150
Both sides, it is ensured that the steadiness of both gun body and nozzle 130 connection, while decreasing the installing space of screw.
Further, above-mentioned gun body is axially arranged, and it includes upper cutting gun 100, lower gun body 120, insulator 110, nozzle 130
And protective cover 140, wherein, above-mentioned screw is arranged on lower gun body 100 and screw sequentially passes through lower gun body 120 and is threadedly coupled
In on nozzle 130；Also, offer the first installation being coaxially disposed with connecting hole respectively on upper cutting gun 100 and insulator 110
Hole and the second mounting hole, in screw installation procedure, the lower end of screw can sequentially pass through the first mounting hole and the second mounting hole simultaneously
It is threadedly connected on nozzle, the upper end of screw is resisted against on lower gun body.
The setting of above-mentioned first mounting hole and the second mounting hole facilitates the dismounting and installation of screw, improves the peace of screw
Dress efficiency.
As shown in Figures 1 to 6, above-mentioned insulator 110 is arranged at upper cutting gun 100 and lower gun body 120 between the two, in upper rifle
The lower end that multiple fixing screws and fixing screws are provided with body 100 can sequentially pass through upper cutting gun 100 and insulator 110 and screw thread
It is connected on lower gun body 120, it is ensured that the sealing connected between upper cutting gun 100, insulator 11 and the three of lower gun body 120, protects
Shield 140 is covered on lower gun body 120 and nozzle 130 is located between protective cover 140 and lower gun body 120, also, protective cover 140
It is threadedly coupled with lower gun body 120.
The quantity of above-mentioned fixing screws is 4, and 4 fixing screws are rectangular to be arranged on upper cutting gun 100, certainly, fixed
The quantity of screw can carry out adapting to adjustment and being not limited to 4 according to actual needs, and the setting of 4 screws can guarantee that
Gun body 100, insulator 11 and the three of lower gun body 120 connection steadiness, while decrease fixing screws upper cutting gun 100,
Shared installing space on insulator 11 and lower gun body 120.
As shown in Fig. 2, Fig. 5, installation set 300 is provided with upper cutting gun 100, centring sleeve is provided with lower gun body 120
320, centring sleeve 320 and installation set 300 are coaxially disposed, and the lower end of tungsten electrode 150 sequentially passes through installation set 300 and centring sleeve 320 simultaneously
It is inserted on nozzle 130.
Preferably, above-mentioned installation set 300 can be divided into the installation portion 302 of connected first installation portion 301 and second, wherein, second
Installation portion 302 is stretched into upper cutting gun 100, and the first installation portion 301 is located at top and second installation portion 302 of the second installation portion 302
Protruding upper cutting gun 100, chuck 310, in installation process, one end of tungsten electrode 150 are set at the middle part of the first installation portion 301
Through chuck 310 and can be installed in the first installation portion 301, it is ensured that the steadiness that tungsten electrode 150 is installed.
Further, above-mentioned chuck 310 includes base, and multiple intermediate plates, two neighboring intermediate plate are surrounded with base
Between be formed with gap, when tungsten electrode 150 is through chuck 310 and when being installed on the first installation portion 301, each intermediate plate can be in radial direction side
Drawn in towards the center of tungsten electrode 150 so that each intermediate plate is in close contact with tungsten electrode 150 and clamps tungsten electrode 150, so as to ensure that
The steadiness that tungsten electrode 150 is installed, certainly, tungsten electrode 150 can adjust the position on axial direction by chuck 310.
Block 330 is additionally provided with upper cutting gun 100, block 330 is covered on tungsten electrode 150 so that tungsten electrode 150 and the external world
Insulation, it is ensured that the security that the present invention is used.
As shown in Figure 1, Figure 3, the rectangular setting of upper cutting gun 100, offers on upper cutting gun 100 away from the side of tungsten electrode 150
For the first air admission hole 220 of plasma gas circulation, the communicated with the first air admission hole 220 is offered on lower gun body 120
One gas port 221, offers the linked hole 223 being obliquely installed on insulator 110, and the two ends of linked hole 223 are respectively with first
The gas port 221 of air admission hole 220 and first is communicated, and the first venthole communicated with the first gas port 221 is offered on nozzle 130
222, plasma (orifice) gas physical efficiency is directed into the first gas port 221 by the first air admission hole 220, and last plasma (orifice) gas physical efficiency goes out by first
Stomata 222 discharges nozzle 130.
Above-mentioned centring sleeve 320 is arranged in the first gas port 221, and the lower end of tungsten electrode 150 can pass through centring sleeve 320 and insert
In first venthole 222, it is ensured that the axial line of tungsten electrode 150 is coaxially disposed with the axial line of the first gas port 221, so as to the
Plasma (orifice) gas physical efficiency cladding is arranged on the outer surface of tungsten electrode 150 in one venthole 222.
Multiple axially arranged air slots 321, the uniform ring of each air slot 321 are offered on the outer surface of centring sleeve 320
Around being distributed on the outer surface of centring sleeve 320, when centring sleeve 320 is installed in the first gas port 221, centring sleeve 320 and
The inwall contact of one gas port 221, while air slot 321 can form water conservancy diversion chamber, plasma with the inwall of the first gas port 221
Gas can be directed into the first venthole 222 by the first gas port 221.
Preferably, the upper end of above-mentioned centring sleeve 320 separates and is formed with gap with the upper end of the first gas port 221, so that
When plasma (orifice) gas physical efficiency can be uniformly introduced to each diversion cavity room full of gap post plasma gas, solve in diversion cavity room etc.
The technical problem of ionized gas skewness, improves the water conservancy diversion efficiency of plasma gas.
Above-mentioned first air admission hole 220, the first gas port 221, water conservancy diversion chamber and the first venthole 222 UNICOM and shape successively
Into above-mentioned plasma channel, the plasma channel is used for the circulation of plasma gas.
As shown in Figure 1, shown in Figure 5, two powder entering holes 230 are offered on the upper surface of upper cutting gun 100, two powder inlets are respectively provided with
In the both sides of tungsten electrode 150, offered and corresponding two powder-guiding hole 231 of two powder entering hole 230, two powder-guiding holes 231 in lower gun body 120
Lower end all extend to be offered on nozzle 130 and on nozzle 130 with one-to-one two flour opening 232 of two powder-guiding hole 231,
Alloy powder can be directed into lower gun body 120 by powder entering hole 230 and is directed respectively into two flour openings 232 by two powder-guiding holes 231
Interior, the setting of two flour openings 232 enables that alloy powder uniform fold, in piece surface, improves the uniform of alloy powder covering
Property.
Preferably, the axial line of above-mentioned powder entering hole 230 is coaxially disposed with the axial line of powder-guiding hole 231, two 232 points of flour openings
The axial line of the both sides and two flour openings 232 that are not arranged at the first venthole 222 is obliquely installed, and alloy powder can enter powder by two
Hole 230 is directed respectively into two powder-guiding holes 231 and is directed into two flour openings 232 along to powder hole so that the flour opening 232 is not
Easily there is stifled powder phenomenon, improve and of the invention lead powder efficiency.
Further, powder sleeve pipe 233 is respectively arranged with above-mentioned two powder entering hole 230, the upper end of powder sleeve pipe 233 is stretched upwards
Go out upper cutting gun 100, the lower end of powder sleeve pipe 233 passes through and stretches into powder-guiding hole 231, and the setting of powder sleeve pipe 233 ensure that powder entering hole
Stifled powder phenomenon is not susceptible in 230, is improve and is led powder efficiency.
Above-mentioned two powder entering hole 230, two powder-guiding holes 231 and two flour openings 232 are sequentially communicated to form above-mentioned powder channel, should
Powder channel is used for the circulation of powder metallurgy and enables alloy powder uniform fold to whole piece surface.
As shown in Figure 1 and Figure 2, inlet opening 250 is offered on upper cutting gun 100, wherein inlet opening 250 is arranged at first and enters
The same side of stomata 220, annular mounting groove is offered on the second installation portion 302, when the second installation portion 302 is installed on upper cutting gun
When 100, annular mounting groove can surround and be formed with first annular chamber 251 with the inwall of upper cutting gun 100, and inlet opening 250
Set through first annular chamber 251, so as to the cooling water energy in inlet opening 250 flows through first be installed to second around chamber
Portion 302 is cooled down, meanwhile, tungsten electrode 150 is inserted in the second installation portion 302, it is ensured that cooling water is carried out to the upper end of tungsten electrode 150
Cooling.
The second annular compartment 252 is offered on nozzle 130, the annular compartment 252 of first annular chamber 251 and second it
Between be axially provided with mozzle, the two ends of mozzle communicate with the annular compartment 252 of first annular chamber 251 and second respectively, cold
But water energy is directed into the second annular compartment 252 by mozzle, so as to cool down water energy be cooled down to nozzle 130, reduces spray
Mouth 130 occur viscous powder due to high temperature and so that alloy powder blocks the generation of the phenomenon of flour opening 232, it is ensured that the present invention can grow
Time service, improves operating efficiency.
The apopore 253 communicated with the second annular compartment 252 is offered on lower gun body 120, cooling water energy is by inlet opening
250 import and are directed into the second annular compartment 252 by first annular chamber 251, are outwards derived finally by apopore 253
And the circulation of cooling water is formed, the circulation of cooling water can drive the heat produced by tungsten electrode 150, improve cooling effect of the invention
Really.
Above-mentioned inlet opening 250, first annular chamber 251, mozzle, the second annular compartment 252 and apopore 253 are constituted
Above-mentioned cooling-water duct, the cooling-water duct turns on and realizes the cooling of tungsten electrode 150 and nozzle 130 for cooling water, improves
Cooling effect of the invention.
As Figure 1 and Figure 4, lower gun body 120 is in " 7 " font, including horizontally disposed horizontal part and vertically disposed vertical
Portion, also, horizontal part upper end contacted with insulator 110 and horizontal part area more than insulator 110 area, in horizontal part
Upper surface offer the second air admission hole 240 away from the side of insulator 110 and offered and the second air admission hole 240 on vertical component effect
Communicate and the second axially arranged gas port 241, simultaneously because both nozzle 130 and protective cover 140 separate so as in nozzle 130
Outlet chamber 242 is formed between the two with protective cover 140, and the lower end of the second gas port 241 is extended on outlet chamber 242,
In the course of the work, protection gas is directed into the second gas port 241 by the second air admission hole 240, and finally protection gas can be along outlet
Chamber 242 is outwards derived.
Preferably, face the end face of the side of upper cutting gun 100 in nozzle 130 depression forms fluted downwards, groove and outlet
Chamber 242 is communicated, and the lower end of above-mentioned second gas port 241 is stretched in groove, and protection gas can be led by the second gas port 241
Enter to groove and diffuse to outlet chamber 242, groove can play cushioning effect to protection gas so that protection gas can be uniformly introduced
To outlet chamber 242.
The quantity of above-mentioned groove is two, and two grooves are corresponding with above-mentioned two screw respectively so that when screw thread connects
It is connected to when on nozzle 130, the outlet of the second gas port 241 can be stretched into groove, it is ensured that protection gas normally.
Further, said nozzle 130 offers the first annular conical surface 243 near the side of protective cover 140, in protective cover
Second circular cone 244 corresponding with the first annular conical surface 243, the annular cone of the first annular conical surface 243 and second are offered on 140
Both are spaced from each other in face 244, so that the first annular conical surface 243, the second circular cone 244 and groove can surround and form outlet chamber
Room 242, simultaneously because the circular cone 244 of the first annular conical surface 243 and second spacing between the two is equal everywhere, it is ensured that protect
Shield gas uniformity as derived from outlet chamber 242.
Above-mentioned second air admission hole 240, the second gas port 241 and outlet chamber 242 are sequentially communicated and form above-mentioned protection
Gas passage, the protection gas passage is used to lead to protection air-flow and be uniformly wrapped on whole piece surface so that protection gas can be covered
Ensure that part is difficult to be oxidized in process in piece surface.
The operation principle of this powder plasma built-up welding endoporus rifle is as follows：
It is upper cutting gun 100, lower gun body 120 and nozzle 130 offer low temperature work first toward cooling water is passed through in cooling-water duct
Make environment.
Be passed through protective gas in toward protection gas passage carries out gas shield to whole lower gun body 120, then by plasma (orifice) gas
Body is passed through in plasma (orifice) gas passage, the gas preparatory stage before making whole gun body be in striking.
Alloy powder is passed through in toward powder channel, last power-on makes to form electrode in tungsten needle, finally opens striking and open
Close, then complete the preparation before welding gun built-up welding.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of plasma arc powder surfacing rifle, it is characterised in that including：
Gun body, its is axially arranged；
Nozzle, its front end for being installed on gun body is provided with least two connectors in gun body, and the lower end of each connector passes through rifle
Body is simultaneously threadedly connected on nozzle；
Tungsten electrode, it is axially set in gun body and the front end of tungsten electrode is stretched into nozzle；
Plasma channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface；
Protection gas passage, it is penetrated and from gun body outer surface by being derived by gun body outer surface after gun body；
Powder channel, it penetrates gun body and by outwards being sprayed after nozzle by gun body outer surface, and the powder channel is two, two
Bar powder channel is respectively arranged at plasma channel both sides；
Cooling-water duct, it is penetrated gun body by the outer surface of gun body and is derived by gun body outer surface after nozzle interior circulation.
2. a kind of plasma arc powder surfacing rifle according to claim 1, it is characterised in that the gun body includes：
Upper cutting gun, the import of the plasma channel, powder channel and cooling-water duct may be contained within upper cutting gun；
Lower gun body, it is connected with upper cutting gun, and the plasma channel, powder channel and cooling-water duct are led by lower gun body
Enter to nozzle, the outlet of the cooling-water duct is arranged on lower gun body, protection gas passage is additionally provided with lower gun body
Import and the protection gas passage are set through lower gun body.
3. a kind of plasma arc powder surfacing rifle according to claim 2, it is characterised in that offer two on lower gun body and pass through
The connecting hole of gun body is worn, the connector is respectively arranged in two connecting holes and the lower end of connector passes through connecting hole and screw thread
It is connected on nozzle.
4. a kind of plasma arc powder surfacing rifle according to claim 3, it is characterised in that the connector is screw, two
Screw is symmetricly set in the lower end of the both sides of tungsten electrode and screw through connecting hole and is threadedly connected on nozzle.
5. a kind of plasma arc powder surfacing rifle according to claim 2, it is characterised in that opened up in the upper surface of upper cutting gun
There is the first air admission hole, the first gas port communicated with the first air admission hole is offered on lower gun body, offered in the middle part of nozzle
Through nozzle and the first venthole for being communicated with the first gas port, first air admission hole, the first gas port and the first outlet
Hole constitutes the plasma (orifice) gas passage.
6. a kind of plasma arc powder surfacing rifle according to claim 2, it is characterised in that second is offered on lower gun body
Air admission hole, offers the second gas port communicated with the second air admission hole on lower gun body, be provided with lower gun body protective cover and
The protective cover separates and is formed with the outlet chamber for connecting outside with nozzle, and the outlet chamber is communicated with the second gas port,
Second air admission hole, the second gas port and outlet chamber composition the protection gas passage.
7. a kind of plasma arc powder surfacing rifle according to claim 5, it is characterised in that offer two on upper cutting gun and enter
Powder hole, offered on lower gun body with the one-to-one powder-guiding hole of two powder entering holes, offered on nozzle relative with two powder-guiding holes
Two flour openings answered, two flour opening is symmetricly set in the both sides of the first venthole, two powder entering hole, two powder-guiding holes and
Two flour openings constitute the powder channel.
8. a kind of plasma arc powder surfacing rifle according to claim 7, it is characterised in that plugged respectively in two powder entering holes
There is powder sleeve pipe.
9. a kind of plasma arc powder surfacing rifle according to claim 2, it is characterised in that opened up in the outer surface of upper cutting gun
There is inlet opening, the first annular chamber communicated with inlet opening is offered around tungsten electrode on upper cutting gun, the is offered on nozzle
Second ring chamber, offers apopore on lower gun body, the inlet opening, first annular chamber, the second annular compartment and goes out
Water hole communicates and forms the cooling-water duct.
10. a kind of plasma arc powder surfacing rifle according to claim 4, it is characterised in that chuck is set on upper cutting gun,
Centring tube is provided with lower gun body, the tungsten electrode is arranged on chuck and centring tube, also, is covered with lid in the upper end of tungsten electrode
Cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059019.7A CN106735803A (en) | 2017-01-23 | 2017-01-23 | A kind of plasma arc powder surfacing rifle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059019.7A CN106735803A (en) | 2017-01-23 | 2017-01-23 | A kind of plasma arc powder surfacing rifle |
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| CN106735803A true CN106735803A (en) | 2017-05-31 |
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| CN201710059019.7A Withdrawn CN106735803A (en) | 2017-01-23 | 2017-01-23 | A kind of plasma arc powder surfacing rifle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315178A (en) * | 2019-07-03 | 2019-10-11 | 阳江市高功率激光应用实验室有限公司 | Welding gun structure and cladding system with the welding gun structure |
| CN110524096A (en) * | 2019-08-06 | 2019-12-03 | 宝鸡鼎晟真空热技术有限公司 | For connecting the plasma gun of vacuum welding equipment |
| CN111970808A (en) * | 2020-08-10 | 2020-11-20 | 南通德邦新材料科技有限公司 | Circumferential powder feeding type plasma generator |
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Application publication date: 20170531 |