CN110587087A - Plasma powder surfacing equipment for increasing cladding area - Google Patents
Plasma powder surfacing equipment for increasing cladding area Download PDFInfo
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- CN110587087A CN110587087A CN201910977980.3A CN201910977980A CN110587087A CN 110587087 A CN110587087 A CN 110587087A CN 201910977980 A CN201910977980 A CN 201910977980A CN 110587087 A CN110587087 A CN 110587087A
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- welding
- pipe
- horizontal adjusting
- cladding area
- welding guns
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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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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Plasma Technology (AREA)
Abstract
The plasma powder surfacing equipment capable of increasing the cladding area is characterized by comprising a horizontal adjusting pipe, wherein rack rods synchronously moving in opposite directions are connected in the horizontal adjusting pipe in a sliding mode, welding guns with adjustable angles are assembled on the two rack rods, the two welding guns are oppositely arranged and incline inwards at set angles, and a cooling gas protection pipe facing nozzles of the two welding guns is arranged in the middle of the horizontal adjusting pipe; the two welding guns are connected with the two welding units, a cooling water tank, a powder feeder and an inert gas tank; meanwhile, the inert gas tank provides protective gas for the cooling gas protection pipe. According to the invention, the distance and the relative inclination between the two welding guns are adjusted, so that the two welding guns work simultaneously, the molten pools of the two welding guns converge mutually, the single cladding area is increased, the cladding speed is increased, the cladding surface quality is ensured, the nozzle is cooled while the cooling gas protection pipe provides the protection gas, and the service life of the nozzle is prolonged.
Description
The technical field is as follows:
the invention relates to the technical field of plasma powder surfacing, in particular to plasma powder surfacing equipment for increasing a cladding area.
Background art:
the plasma powder surfacing process is applied to various fields of industrial manufacturing industry, and mainly aims to obtain an alloy hard surface layer with specific properties (such as wear resistance, corrosion resistance, temperature resistance and the like).
However, when the plasma powder surfacing is performed by any method, the width of single cladding is limited, so that the working efficiency cannot be improved; and two adjacent welding bead dissolving pools can not be intersected, so that more fluctuation of a cladding surface occurs, and the turning workload is increased; and after the nozzle is used for a long time, the service life of the nozzle is shortened due to high-temperature damage caused by the long-time use of the nozzle.
The invention content is as follows:
in view of this, it is necessary to design a plasma powder surfacing apparatus for increasing the cladding area to increase the width of single cladding and improve the working efficiency.
A plasma powder surfacing device for increasing a cladding area is characterized by comprising a welding machine device and a spray welding device;
wherein, the spray welding equipment includes: the welding gun device comprises a horizontal adjusting pipe and two rack rods which relatively slide in the horizontal adjusting pipe, wherein a gear device which simultaneously drives the two rack rods to move towards opposite directions is arranged on the horizontal adjusting pipe, welding guns are assembled at the end parts of the two rack rods, and the two welding guns are inclined towards the inner side in a set angle; the welding gun horizontal tube is characterized by also comprising a cooling gas protection tube arranged on the horizontal adjusting tube, and air outlets at two ends of the cooling gas protection tube correspondingly face nozzles of the two welding guns;
the welder apparatus includes: the welding device comprises two welding units, a cooling water tank, an inert gas tank and a powder feeding machine, wherein the two welding units are connected with the tungsten extremes of the two welding guns in a one-to-one correspondence manner; the inert gas tank is communicated with the cooling gas protection pipe through a gas guide pipe, and the two welding units, the cooling water tank and the powder feeder are of an integrated structure; be provided with the updraft ventilator who is used for discharging cooling gas in the cooling water tank, updraft ventilator through filter damp board with two inside intercommunications of welding unit.
Preferably, the both ends opening of violently managing of regulation, just the inside relative lateral wall of violently managing of regulation is gone up the symmetry and is provided with the spout, two rack bar one-to-one sliding connection be in the spout and from corresponding opening part roll-off.
Preferably, the gear device comprises a driving gear which is rotatably connected in the adjusting transverse pipe, and the driving gear is meshed with the two rack rods simultaneously; the horizontal adjusting pipe is characterized by further comprising a screw rod connected with the axis of the driving gear, a bearing is sleeved on the screw rod, a bearing hole matched with the bearing is formed in the top of the horizontal adjusting pipe, and the screw rod is partially positioned outside the horizontal adjusting pipe; the screw rod is characterized by further comprising a knob connected to the top of the screw rod, and a locking piece in threaded connection with the screw rod is arranged below the knob.
Preferably, the locking piece is a butterfly nut, and the butterfly nut is in threaded connection with a portion, exposed out of the adjusting transverse pipe, of the screw rod.
Preferably, the one end that two rack bar kept away from each other all is connected with the snap ring through the locking pivot, two welder one-to-one joint are in the snap ring at both ends.
Preferably, the set angle is that the two welding guns are inclined inwards by 15-45 degrees.
Preferably, a powder feeding hole communicated with the corresponding powder feeding channel is formed in the nozzle of each welding gun, and the powder feeding hole is located on the inclined inner side of the nozzle.
Preferably, the cooling gas protection pipe is a three-fork pipe body; the inert gas tank is connected with a central bifurcated pipe of the cooling gas protection pipe, and two bifurcated pipes of the cooling gas protection pipe face to corresponding nozzles.
Preferably, the two welding units are stacked, a partition plate is arranged between the two welding units, a through hole is formed in the partition plate, and a heat dissipation hole is formed in the top of the welding unit located on the upper layer.
Preferably, updraft ventilator is for setting up the induced draft fan at cooling water tank top, the induced draft fan passes through the pipeline and communicates with the welding unit who is located the lower floor, just detachable is equipped with in the pipeline strain the damp board.
According to the invention, the distance and the relative inclination between the two welding guns are adjusted, so that the two welding guns work simultaneously, the molten pools of the two welding guns converge mutually, the single cladding area is increased, the cladding speed is increased, the cladding surface quality is ensured, the nozzle is cooled while the cooling gas protection pipe provides the protection gas, and the service life of the nozzle is prolonged.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a plasma powder surfacing device for increasing a cladding area;
FIG. 2 is a schematic structural diagram of a welding device of the plasma powder surfacing device for increasing the cladding area;
FIG. 3 is a schematic structural diagram of a welding gun of the plasma powder surfacing equipment for increasing the cladding area;
FIG. 4 is a schematic structural diagram of a horizontal regulating tube of the plasma powder surfacing equipment for increasing the cladding area;
FIG. 5 is a schematic view of a partial structure of the plasma powder surfacing equipment for increasing the cladding area according to the present invention;
fig. 6 is a schematic structural diagram of a gear device of the plasma powder surfacing equipment for increasing the cladding area.
In the figure: the welding machine comprises a welding machine device, a 100 spray welding device, a 200 cooling water tank, 10 two welding units, a 20 powder feeding machine, 30 inert gas tanks, 40 adjusting transverse pipes, 50 two welding guns, 60 cooling gas protection pipes, 70 suction fans, 11 pipelines, 12 moisture filtering plates, 13 a first welding unit, 20a second welding unit, 20b partition plates, 21 sliding grooves, 51 rack rods, 52 locking rotating shafts, 53 clamping rings, 54 screw rods, 55 knobs, 56 butterfly nuts, 57 bearings, 58 driving gears, 59 left welding guns, 60a right welding guns, 60b gun bodies, 61 nozzles, 62 tungsten poles, 63 water cooling circulating pipelines, 64 powder feeding channels, 65 ion gas channels, 66 powder feeding holes and 67.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Firstly, in order to facilitate understanding of the invention, the invention provides a plasma powder surfacing device for increasing a cladding area, and firstly, an application scenario of the device is explained, when a workpiece (such as a wear-resistant plate and a roller shaft) with a large cladding area is clad, the width of a single cladding welding bead of the existing powder surfacing machine is 5mm-20mm, and a melting pool between two adjacent welding beads can not be converged, so that a cladding surface has a wavy shape; therefore, the two welding units work simultaneously, the angles of the two welding guns are adjusted, the width of a cladding welding bead is increased, the cladding surface is smoother, and the cladding progress is accelerated.
The invention is further explained in detail with the accompanying drawings and the embodiments; referring to fig. 1-2 together, the invention provides a plasma powder surfacing device for increasing a cladding area, which is characterized by comprising a welding machine device 100, wherein the welding machine device 100 is stacked by adopting two welding units 20 in the prior art, the two welding units 20 are uniformly connected with 380V three-phase voltage, each welding unit is provided with a parameter adjusting device, the welding units are common combined parts in the existing plasma submerged arc welding machine, the structure and the principle of the welding units are known by those skilled in the art, and the structure and the principle are not described herein; furthermore, to facilitate understanding of the corresponding operating states of the two welding units 20, the two welding units 20 are distinguished as: the welding unit positioned on the upper layer is a first welding unit 20a, the welding unit positioned on the lower layer is a second welding unit 20b, an insulating partition plate 21 is arranged between the first welding unit 20a and the second welding unit 20b, and the two welding units 20 are isolated by the insulating partition plate 21, so that the two welding units 20 are prevented from being connected due to power supply short circuit; the top of the second welding unit 20b and the bottom of the first welding unit 20a are correspondingly provided with communication holes, the partition plate 21 is provided with through holes corresponding to the plurality of communication holes, and the top of the first welding unit 20a is provided with a grid-type heat dissipation hole.
It can be seen from the above structure that after the second welding unit 20b works for a long time, the high temperature generated inside will pass through the through hole of the partition plate 21 and enter the first welding unit 20a, and the heat in the first welding unit 20a is discharged to the outside from the heat dissipation hole by utilizing the principle of the rise of heat energy.
With continued reference to fig. 2, the welding unit further includes a cooling water tank 10, the cooling water tank 10 is used as a cooling component in the embodiment of the present application, and provides circulating cooling water to the water-cooling circulation pipeline 64 in the welding gun, and simultaneously cools the two welding units 20 by using the cooling gas in the cooling water tank 10; specifically, an air draft device is arranged at the position, higher than the horizontal plane of the cooling water, of the upper part of the cooling water tank 10, the air draft device is an air draft fan 11, the air draft fan 11 is covered with a conical air storage cover, the conical end of the air storage cover is connected with a pipeline 12, and the pipeline 12 is communicated with the inside of the second welding unit 20b after being bent in a U shape; and because a certain amount of moist gas exists in the cooling gas, the pipeline 12 is detachably connected with the moisture filtering plate 13, the cooling gas passing through the moisture filtering plate 13 rises to the first welding unit 20a after being subjected to the second welding unit 20b, heat in the two welding units 20 working for a long time is replaced and discharged, the working temperature of the two welding units 20 is ensured, and the service life of the two welding units is prolonged.
With continued reference to fig. 1 and 3, the welding unit further includes an inert gas tank 40, the inert gas tank 40 is used as a plasma gas source and a shielding gas source in the embodiment of the present application, and argon is used in the inert gas tank 40; and the inert gas tank 40 has two gas outlets and a shielding gas outlet, each of which is connected to a regulating valve with a gas pressure gauge.
The welding unit further comprises a powder feeding machine 30, the powder feeding machine 30 is integrated with the two welding units 20 and the cooling water tank 10, and the powder feeding machine 30 is connected with two powder feeding pipelines.
In the invention, two welding units 20, a cooling water tank 10, an inert gas tank 40 and a powder feeder 30 are respectively connected with the spray welding equipment 200, so that the working efficiency is improved under the condition of lowest cost; the spray welding apparatus 200 includes two welding guns inclined at a set angle to the inner side, and here, for convenience of understanding, the welding guns on both sides are divided into a left welding gun 60a and a right welding gun 60 b; the first welding unit 20a is connected with the tungsten electrode 63 end of the left welding gun 60a, cooling water is pumped into a water-cooling circulating pipeline 64 in the left welding gun 60a through a first cooling water pipe in the cooling water tank 10, one gas outlet of the inert gas tank 40 is connected with a plasma gas channel 66 of the left welding gun 60a, and meanwhile, one powder feeding pipeline of the powder feeding machine 30 is communicated with a powder feeding channel 65 of the left welding gun 60 a;
the second welding unit 20b is connected with the tungsten electrode 63 end of the right welding gun 60b, cooling water is pumped into a water-cooling circulating pipeline 64 in the right welding gun 60b through a second cooling water pipe in the cooling water tank 10, the other gas outlet of the inert gas tank 40 is connected with a plasma gas channel 66 of the right welding gun 60b, and meanwhile, the other powder feeding pipeline of the powder feeding machine 30 is communicated with a powder feeding channel 65 of the right welding gun 60 b; because the two welding guns 60 are arranged in a relatively inclined mode, and the arc columns of the two welding guns 60 are also arranged in a relatively inclined mode, the powder feeding holes 67 of the two welding guns 60 are arranged on the inner side of the inclined mode, namely the powder feeding holes 67 are communicated with the corresponding powder feeding channels 65, the powder falls into the inclined arc columns under the self-gravity of the alloy powder after being discharged, and therefore the alloy powder is melted and sprayed on a workpiece.
With continuing reference to fig. 1 and 4, when a workpiece is cladded, in order to facilitate adjustment of the distance between the two welding guns 60, the spray welding equipment 200 further includes a horizontal adjusting pipe 50 and two rack rods 52 which slide in the horizontal adjusting pipe 50 relatively, two ends of the horizontal adjusting pipe 50 are open, and sliding grooves 51 are symmetrically arranged on opposite side walls inside the horizontal adjusting pipe 50, tooth surfaces of the two rack rods 52 face each other, and the two rack rods 52 are slidably connected in the sliding grooves 51 in a one-to-one correspondence manner and slide out from the corresponding openings.
With continued reference to fig. 5, the spray welding apparatus 200 further includes a gear arrangement for simultaneously driving the two rack bars 52 in synchronized movement in opposite directions, the gear arrangement including a drive gear 59 rotatably coupled within the accommodating transverse tube 50, the drive gear 59 simultaneously engaging the two rack bars 52; the driving gear 59 is positioned in the horizontal adjusting pipe 50, the bottom axis of the driving gear 59 is rotatably connected in the horizontal adjusting pipe 50, the driving gear 59 is positioned between the two rack rods 52 and is simultaneously meshed with the tooth surfaces of the two rack rods 52, namely when the driving gear 59 rotates rightwards, one rack rod 52 is driven to slide out leftwards, and the other rack rod 52 slides out rightwards; when the drive gear 59 is rotated to the left, one rack bar 52 is driven to retract to the right, and the other rack bar 52 retracts to the left.
The spray welding equipment 200 further comprises a screw 55 connected with the axis of the driving gear 59, a bearing 58 is sleeved on the screw 55, and a bearing hole matched with the bearing 58 is formed in the top of the horizontal adjusting pipe 50; the screw 55 is rotatably connected to the horizontal adjusting pipe 50, the part of the screw 55 located in the horizontal adjusting pipe 50 is a polished rod, a bearing 58 is fixedly sleeved in a bearing hole, a driving gear 59 is driven to rotate when the screw 55 rotates, and in addition, a knob 56 is assembled at the top of the screw 55 for conveniently rotating the screw 55;
with reference to fig. 6, when the two welding guns 60 are operated, in order to prevent the two rack rods 52 from being displaced due to the influence of external vibration factors, and thus the welding quality is affected, after the distance between the two welding guns 60 is adjusted, a locking member is screwed on the threaded portion of the screw 55 located outside the horizontal adjustment pipe 50, the locking member is a butterfly nut 57, and the butterfly nut 57 is screwed on the portion of the screw 55 exposed out of the horizontal adjustment pipe 50. By tightening the wing nuts 57 and forcing the top of the cross-tube adjuster 50, the locking screw 55 is rotated, and thus adjusting the spacing between the two welding guns 60 is accomplished.
In addition, the two welding guns 60 are inclined to the inner side by a set angle, preferably the two welding guns 60 are inclined to the inner side by 15-45 degrees, so that two welding beads can be intersected to form an intersection welding bead at a distance between the nozzles 62 of the two welding guns 60, and when the adjacent intersection welding bead is clad, one third of the intersection welding bead is pressed, so that the undulation condition of a cladding surface is effectively prevented; when the angles of the two welding guns 60 are specifically adjusted, one ends, far away from each other, of the two rack rods 52 are connected with the clamping rings 54 through the locking rotating shafts 53, the two welding guns 60 are assembled in the clamping rings 54 in a one-to-one correspondence mode, the locking rotating shafts 53 are locked through bolts, the two welding guns 60 are adjusted to corresponding angles, and cladding operation is started.
Continuing to refer to fig. 1, in the welding gun for plasma powder surfacing in the prior art, a protective cover is covered on the nozzle 62, a protective gas chamber is formed between the protective cover and the nozzle 62, and meanwhile, a protective gas channel is arranged in the gun body 61 of the welding gun, and occupies the inner space of the gun body 61, so that the water-cooling circulation pipeline 64 is reduced; according to the invention, the cooling gas protection pipe 70 is arranged on the horizontal regulating pipe 50, so that after the protection gas is sprayed to the nozzle 62 of the welding gun, the protection gas is baffled and covers the welding layer on the cladding surface while the nozzle 62 is cooled, the cladding surface is prevented from being oxidized, and the high-temperature metal is prevented from being damaged by the outside gas. When the cooling gas protection pipe is specifically arranged, the cooling gas protection pipe 70 is a three-fork pipe body; the vertical branch pipe of the cooling gas protection pipe 70 is connected to the protective gas outlet of the inert gas tank 40, and the two branch pipes of the cooling gas protection pipe 70 face the corresponding nozzles 62 respectively.
Claims (10)
1. The utility model provides an increase plasma powder build-up welding equipment that covers area which characterized in that includes: welding machine equipment and spray welding equipment;
wherein, the spray welding equipment includes: the welding gun device comprises a horizontal adjusting pipe and two rack rods which relatively slide in the horizontal adjusting pipe, wherein a gear device which simultaneously drives the two rack rods to move towards opposite directions is arranged on the horizontal adjusting pipe, welding guns are assembled at the end parts of the two rack rods, and the two welding guns are inclined towards the inner side in a set angle; the welding gun horizontal tube is characterized by also comprising a cooling gas protection tube arranged on the horizontal adjusting tube, and air outlets at two ends of the cooling gas protection tube correspondingly face nozzles of the two welding guns;
the welder apparatus includes: the welding device comprises two welding units, a cooling water tank, an inert gas tank and a powder feeding machine, wherein the two welding units are connected with the tungsten extremes of the two welding guns in a one-to-one correspondence manner; the inert gas tank is communicated with the cooling gas protection pipe through a gas guide pipe, and the two welding units, the cooling water tank and the powder feeder are of an integrated structure; be provided with the updraft ventilator who is used for discharging cooling gas in the cooling water tank, updraft ventilator through filter damp board with two inside intercommunications of welding unit.
2. The plasma powder surfacing equipment for increasing cladding area according to claim 1, wherein the horizontal regulating tube is provided with openings at two ends, and sliding grooves are symmetrically formed in opposite side walls inside the horizontal regulating tube, and the two rack rods are slidably connected in the sliding grooves in a one-to-one correspondence manner and slide out from the corresponding openings.
3. The plasma powder overlay welding apparatus for increasing cladding area of claim 2 wherein said gear arrangement comprises a drive gear rotatably connected within said adjustment cross-tube, said drive gear simultaneously engaging said two rack bars; the horizontal adjusting pipe is characterized by further comprising a screw rod connected with the axis of the driving gear, a bearing is sleeved on the screw rod, a bearing hole matched with the bearing is formed in the top of the horizontal adjusting pipe, and the screw rod is partially positioned outside the horizontal adjusting pipe; the screw rod is characterized by further comprising a knob connected to the top of the screw rod, and a locking piece in threaded connection with the screw rod is arranged below the knob.
4. The plasma powder overlaying device capable of increasing cladding area according to claim 3, wherein the locking member is a butterfly nut, and the butterfly nut is in threaded connection with a portion of the screw rod exposed out of the horizontal adjusting tube.
5. The plasma powder surfacing equipment for increasing cladding area according to any one of claims 1 to 4, wherein one ends of the two rack rods, which are far away from each other, are connected with clamping rings through locking rotating shafts, and the two welding guns are correspondingly clamped in the clamping rings at two ends one by one.
6. The plasma powder overlay welding apparatus to increase a cladding area of claim 1, wherein the set angle is such that both of the welding torches are inclined inwardly between 15 ° and 45 °.
7. The plasma powder overlay welding apparatus for increasing cladding area according to claim 6, wherein each nozzle of the welding gun is provided with a powder feeding hole communicated with the corresponding powder feeding channel, and the powder feeding hole is located at an inclined inner side of the nozzle.
8. The plasma powder surfacing equipment for increasing cladding area according to claim 1, wherein the cooling gas protection tube is a three-forked tube body; the inert gas tank is connected with a central bifurcated pipe of the cooling gas protection pipe, and two bifurcated pipes of the cooling gas protection pipe face to corresponding nozzles.
9. The plasma powder surfacing equipment for increasing cladding area according to claim 1, wherein the two welding units are stacked, a partition is arranged between the two welding units, a through hole is formed in the partition, and a heat dissipation hole is formed in the top of the welding unit located on the upper layer.
10. The plasma powder overlaying device capable of increasing cladding area according to claim 9, wherein the air draft device is an air draft fan arranged at the top of the cooling water tank, the air draft fan is communicated with the welding unit located at the lower layer through a pipeline, and the moisture filtering plate is detachably assembled in the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977980.3A CN110587087B (en) | 2019-10-15 | 2019-10-15 | Plasma powder surfacing equipment for increasing cladding area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977980.3A CN110587087B (en) | 2019-10-15 | 2019-10-15 | Plasma powder surfacing equipment for increasing cladding area |
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| Publication Number | Publication Date |
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| CN110587087A true CN110587087A (en) | 2019-12-20 |
| CN110587087B CN110587087B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910977980.3A Active CN110587087B (en) | 2019-10-15 | 2019-10-15 | Plasma powder surfacing equipment for increasing cladding area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502528A (en) * | 2022-10-21 | 2022-12-23 | 吴忠市黄河电焊机有限公司 | Plasma arc gouging device for efficiently removing wear-resistant layer of large-sized compression roller |
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| CN109175639A (en) * | 2018-10-30 | 2019-01-11 | 首都航天机械有限公司 | A kind of double plasma arc increasing material manufacturing devices of coaxial wire feed |
| CN109719373A (en) * | 2019-02-26 | 2019-05-07 | 上海交通大学 | Mariages spacing is adjustable narrow clearance melting electrode gas protective welding gun |
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| CN101733535A (en) * | 2009-12-04 | 2010-06-16 | 济南杰瑞复盛机电设备有限公司 | Plasma arc plane surface welding machine |
| DE102013018257A1 (en) * | 2013-10-30 | 2015-04-30 | Bernd Hillerich | Alignment method for distance measuring devices and device thereto |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115502528A (en) * | 2022-10-21 | 2022-12-23 | 吴忠市黄河电焊机有限公司 | Plasma arc gouging device for efficiently removing wear-resistant layer of large-sized compression roller |
| CN115502528B (en) * | 2022-10-21 | 2024-01-16 | 吴忠市黄河电焊机有限公司 | Plasma arc gouging device for efficiently removing wear-resistant layer of large-sized compression roller |
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| CN110587087B (en) | 2021-11-09 |
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