CN114932300A - Plasma surfacing equipment for preventing inner hole cracks from being generated - Google Patents
Plasma surfacing equipment for preventing inner hole cracks from being generated Download PDFInfo
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- CN114932300A CN114932300A CN202210707427.XA CN202210707427A CN114932300A CN 114932300 A CN114932300 A CN 114932300A CN 202210707427 A CN202210707427 A CN 202210707427A CN 114932300 A CN114932300 A CN 114932300A
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- plasma surfacing
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- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 16
- 208000037656 Respiratory Sounds Diseases 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000012895 dilution Substances 0.000 abstract description 3
- 238000010790 dilution Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The invention relates to the technical field of plasma surfacing, in particular to plasma surfacing equipment for preventing inner hole cracks from generating, which mainly comprises a rotary working platform, a double-arm type moving mechanism, a plasma surfacing device, a control console and a heating platform; the rotary working platform, the double-arm type moving mechanism and the plasma surfacing device are used as executing devices of the plasma surfacing equipment; the console is used for receiving and processing instructions input by a user and a sensor and controlling the plasma surfacing equipment to work; wherein the heated platen is used to raise a constant temperature to the workpiece. This scheme acquires the heating platform temperature by high temperature resistant temperature sensor, by control cabinet control heating platform temperature, guarantees the heating platform constancy of temperature by the windshield, can carry out the preheating of degree centigrade 600 degrees to the work piece in the whole journey to do not appear welding hole crackle under the circumstances of guaranteeing that the dilution rate is less than 2%.
Description
Technical Field
The invention relates to the technical field of plasma surfacing, in particular to plasma surfacing equipment for preventing inner hole cracks from being generated.
Background
Plasma surfacing is a common surface engineering technology, is widely applied to industries such as molds, ships, repair and the like, and is an economical and efficient surface modification technology. Before surfacing, related surfacing layer special-performance surface layer materials are prepared according to use requirements, and the surfacing layer is prepared on the surface of the substrate through surfacing, so that the part obtains specific performances such as high-temperature corrosion resistance, wear resistance and the like at lower cost, and the service life of the sealing ring part is obviously prolonged. The method takes a tungsten electrode in a welding gun as a negative electrode, a workpiece to be welded as a positive electrode, and plasma generated between the positive electrode and the negative electrode as a heat source to melt powder fed by a powder feeding device, so as to form a surfacing layer with special performance in a specified area.
However, in the aspect of the development of the low-dilution-rate crack-free long-inner-hole plasma surfacing hard alloy technology, the temperature of a workpiece is unstable due to the fact that the workpiece is exposed to the external environment in the surfacing process of the traditional plasma surfacing technology, and inner hole cracks are easy to generate in the plasma surfacing process of the workpiece.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides plasma surfacing equipment for preventing inner hole cracks from being generated, which can preheat a workpiece at 600 ℃ in the whole process, so that the cracks are not generated under the condition of ensuring that the dilution rate is less than 2%. The temperature of the heating platform is obtained by the temperature sensor, the temperature of the heating platform is controlled by the control console, the temperature of the heating platform is kept constant at 600 ℃ by the heat insulation plate, and the problem that inner hole cracks are generated due to instability of workpiece temperature in the plasma surfacing process is solved.
In order to achieve the above purpose, the invention provides the following technical scheme: a plasma surfacing device for preventing inner hole cracks from being generated comprises a rotary working platform, a double-arm type moving mechanism, a plasma surfacing device, a control console and a heating platform; the rotary working platform comprises an internal speed reduction motor and a circular bearing plate; the double-arm type moving mechanism comprises a longitudinal column, a transverse column, a plasma pile welding gun supporting plate, a screw rod, a bearing, a sliding block, an HGW linear guide rail, a longitudinal moving plate, a transverse moving motor, a longitudinal downward limiter, a longitudinal upward limiter, a longitudinal photoelectric switch supporting plate, a transverse diffuse reflection photoelectric switch, a longitudinal diffuse reflection photoelectric switch, a transverse guide rail, a reinforcing plate and a rack; the plasma surfacing device comprises a plasma surfacing welding gun, a powder feeder and a powder feeding pipe; wherein the heating platform comprises a heating wire, a windshield and a windshield connecting device.
The rotary working platform, the double-arm type moving mechanism and the plasma surfacing device are used as executing devices of the plasma surfacing equipment; the control console is used for receiving and processing instructions input by a user and the sensor and controlling the plasma surfacing equipment to work; the transverse diffuse reflection photoelectric switch and the longitudinal diffuse reflection photoelectric switch are used for collecting position signals and transmitting the position signals to the console; wherein the heating platform increases constant temperature for the workpiece through the heating wires and the windshield.
Furthermore, the rotary working platform is driven by the matching of an alternating current speed reducing motor and a thrust ball bearing, and rotation is guaranteed under the action of bearing axial force.
Furthermore, the double-arm type moving mechanism guide rail adopts an HGW linear guide rail and is arranged at the two sides of the plane of the longitudinal column and the transverse column so as to ensure the moving reliability of the double-arm type moving mechanism.
Furthermore, the position sensor of the double-arm type moving mechanism sensor module is a diffuse reflection photoelectric switch and is arranged at the fixed positions of the longitudinal column and the transverse column to limit the transverse and longitudinal strokes of the double-arm type moving mechanism.
Furthermore, the plasma surfacing welding gun automatically positions to a surfacing start position according to workpiece information input by a user and automatically descends to an arc striking height.
Furthermore, the powder feeder is arranged at the position of the short side of the transverse column so as to ensure the stress balance of the double-arm type moving mechanism.
Furthermore, the powder feeding pipe is arranged in the plasma surfacing device and the inner position of the transverse column so as to protect the safety of the powder feeding pipe and save the external space.
Furthermore, the temperature sensors of the heating platform are high-temperature-resistant thermistor sensors and are arranged at the four groove positions of the heating platform to acquire the average temperature of the heating platform.
Compared with the prior art, the invention has the beneficial effects that:
(1) the temperature of the heating platform is controlled by the control console, and the temperature of the heating platform is kept constant at 600 ℃ by the heat insulation plate, so that the problem of inner hole cracks generated in the process of plasma surfacing is solved;
(2) the rotation is guaranteed under the action of bearing axial force by rotating the working platform, and the plasma surfacing welding gun is automatically positioned to the position of a surfacing starting point;
(3) the pipeline path from the powder feeder to the powder feeding pipe is arranged in the plasma surfacing device and the inner position of the transverse column, so that the safety of the powder feeding pipe is protected, and the external space is saved.
(4) The powder feeder is arranged below the short edge of the transverse column, so that the stress balance of the double-arm type moving mechanism is ensured.
(5) Possess historical welding data record function, the control cabinet can give cloud ware with data transmission, and operating personnel can directly look over from human-computer interaction equipment or high in the clouds.
Drawings
Fig. 1 is a perspective view of a plasma surfacing device for preventing inner hole cracks from being generated according to the present invention.
Fig. 2 is an enlarged schematic view of the connection portion between the longitudinal pillar and the transverse pillar according to the present invention.
Fig. 3 is a rear view of a plasma surfacing device for preventing inner hole cracks according to the present invention.
Fig. 4 is a partially enlarged schematic view of the dual-arm moving mechanism according to the present invention.
Wherein, 1-a control console, 2-a transverse column, 3-a longitudinal column, 4-a circular bearing plate, 5-a rotary working platform, 6-a heating platform, 7-a heating wire, 8-a windshield, 9-a windshield connecting device, 10-a double-arm type moving mechanism, 11-a plasma stack welding gun supporting plate, 12-a screw rod, 13-a bearing, 14-a sliding block, 15-an HGW linear guide rail, 16-a longitudinal moving plate, 17-a transverse moving plate, 18-a speed reducing motor, 19-a powder feeder, 20-a transverse moving motor, 21-a longitudinal moving motor, 22-a longitudinal downward limiter, 23-a longitudinal upward limiter, 24-a longitudinal photoelectric switch supporting plate, 25-a transverse photoelectric switch supporting plate and 26-a transverse diffuse reflection photoelectric switch, 27-longitudinal diffuse reflection photoelectric switch, 28-transverse guide rail, 29-reinforcing plate, 30-plasma surfacing device, 31-powder feeding pipe, 32-plasma surfacing gun, 33-column reinforcing plate and 34-rack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the examples of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. The present invention may be embodied in other specific forms than those herein described and it is therefore not intended that the scope of the invention be limited to the specific embodiments disclosed below.
As shown in fig. 1-4, a plasma surfacing device for preventing inner hole cracks from generating comprises a rotary working platform 5, a double-arm type moving mechanism 10, a plasma surfacing device 30, a control platform 1 and a heating platform 6; wherein the rotary working platform 5 comprises an internal speed reduction motor 18 and a circular bearing plate 4; the double-arm type moving mechanism 10 comprises a longitudinal column 3, a transverse column 2, a plasma surfacing gun supporting plate 11, a screw rod 12, a bearing 13, a slider 14, a HGW linear guide rail 15, a longitudinal moving plate 16, a transverse moving plate 17, a transverse moving motor 20, a longitudinal moving motor 21, a longitudinal downward limiter 22, a longitudinal upward limiter 23, a longitudinal photoelectric switch supporting plate 24, a transverse photoelectric switch supporting plate 25, a transverse diffuse reflection photoelectric switch 26, a longitudinal diffuse reflection photoelectric switch 27, a transverse guide rail 28, a reinforcing plate 29 and a rack 34; the plasma overlay welding device 30 comprises a plasma overlay welding gun 32, a powder feeder 19 and a powder feeding pipe 31; wherein the heating platform 6 comprises a heating wire 7, a windshield 8 and a windshield connecting device 9.
The rotary working platform 5, the double-arm type moving mechanism 10 and the plasma surfacing device 30 are used as executing devices of the plasma surfacing equipment; the console 1 is used for receiving and processing instructions input by a user and a sensor and controlling the plasma surfacing equipment to work; the transverse diffuse reflection photoelectric switch 26 and the longitudinal diffuse reflection photoelectric switch 27 are used for collecting position signals and transmitting the position signals to the console; wherein the heating platform 6 raises the constant temperature to the workpiece through a heating wire 7 and a windshield 8.
The rotary working platform 5 is driven by matching an alternating current speed reducing motor 18 and a thrust ball bearing, and is guaranteed to rotate under the action of bearing axial force.
The guide rails of the double-arm moving mechanism 10 are HGW linear guide rails, and are disposed at two sides of the plane of the longitudinal column 3 and the horizontal column 2, so as to ensure the reliability of the movement of the double-arm moving mechanism 10.
The position sensor of the double-arm moving mechanism 10 is a diffuse reflection photoelectric switch, and is arranged at the fixed positions of the longitudinal column 3 and the transverse column 2 to limit the transverse and longitudinal strokes of the double-arm moving mechanism 10.
The plasma surfacing torch 32 is automatically positioned to the start position of the surfacing according to the workpiece information input by the user, and automatically lowered to the arc striking height.
The powder feeder 19 is disposed at the short side of the transverse column 2 to ensure the stress balance of the double-arm moving mechanism 10.
The powder feeding pipe 31 is disposed inside the plasma overlaying device 30 and the transverse column 2 to protect the safety of the powder feeding pipe and save the external space.
The temperature sensors of the heating platform 6 are high-temperature-resistant thermistor sensors and are arranged at the four groove positions of the heating platform to acquire the average temperature of the heating platform.
The working principle of the invention is as follows:
when the plasma surfacing equipment for preventing inner hole cracks from generating works, a control console starting switch is pressed, a rotary working platform and a double-arm type moving mechanism start to move, and a plasma surfacing welding gun in a plasma surfacing device is automatically positioned to a surfacing starting point position according to workpiece information input by a user and automatically descends to an arc starting height; meanwhile, the heating platform is connected with a power supply to supply power to the heating wires, and the temperature is continuously raised until the temperature detected by the thermistor sensor reaches 600 ℃; after the temperature of the heating platform is stable, the powder feeder sends powder into a designated area on a workpiece through a powder feeding pipe, a plasma beam is used as a heat source, a surfacing layer with special performance is formed on a metal surface layer on the workpiece, and due to high energy density and strong penetrability, the alloy powder sent to the surface of the workpiece is rapidly melted through high-energy beam irradiation of the plasma, and an alloy molten pool is formed on the surface of the workpiece; after the welding gun is moved away, the temperature of the heating platform is constant at 600 ℃, and the molten pool is stably condensed and formed under the action of the rapid heat conduction of the workpiece and the radiation heat conduction of the air around the workpiece, so that cracks are not generated under the condition that the dilution rate is less than 2%, the service life of the workpiece is greatly met, and the wear-resistant service life is prolonged; after welding, the console records the welding data every time, and sends the data to the cloud server, and an operator can directly check the data from the human-computer interaction device or the cloud.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a prevent plasma surfacing equipment of hole crackle production which characterized in that: the device comprises a rotary working platform, a double-arm type moving mechanism, a plasma surfacing device, a control console and a heating platform; the rotary working platform comprises an internal speed reduction motor and a circular bearing plate; the double-arm type moving mechanism comprises a longitudinal column, a transverse column, a plasma pile welding gun supporting plate, a screw rod, a bearing, a sliding block, an HGW linear guide rail, a longitudinal moving plate, a transverse moving motor, a longitudinal downward limiter, a longitudinal upward limiter, a longitudinal photoelectric switch supporting plate, a transverse diffuse reflection photoelectric switch, a longitudinal diffuse reflection photoelectric switch, a transverse guide rail, a reinforcing plate and a rack; the plasma surfacing device comprises a plasma surfacing welding gun, a powder feeder and a powder feeding pipe; wherein the heating platform comprises a heating wire, a windshield and a windshield connecting device.
2. The plasma surfacing equipment for preventing the generation of the inner hole cracks according to claim 1, wherein: the rotary working platform, the double-arm type moving mechanism and the plasma surfacing device are used as executing devices of the plasma surfacing equipment; the console is used for receiving and processing instructions input by a user and a sensor and controlling the plasma surfacing equipment to work; the transverse diffuse reflection photoelectric switch and the longitudinal diffuse reflection photoelectric switch are used for collecting position signals and transmitting the position signals to the console; wherein the heating platform increases constant temperature for the workpiece through the heating wires and the windshield.
3. The plasma surfacing equipment for preventing the generation of the inner hole cracks according to claim 1, wherein: the powder feeder is arranged at the position of the short side of the transverse column so as to ensure the stress balance of the double-arm type moving mechanism.
4. The plasma surfacing equipment for preventing the generation of the inner hole cracks according to claim 1, wherein: the powder feeding pipe is arranged in the plasma surfacing device and the inner position of the transverse column so as to protect the safety of the powder feeding pipe and save the external space.
5. The plasma surfacing equipment for preventing the generation of the inner hole cracks according to claim 1, wherein: the temperature sensors of the heating platform are high-temperature-resistant thermistor sensors and are arranged at the four groove positions of the heating platform to acquire the average temperature of the heating platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707427.XA CN114932300A (en) | 2022-06-21 | 2022-06-21 | Plasma surfacing equipment for preventing inner hole cracks from being generated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707427.XA CN114932300A (en) | 2022-06-21 | 2022-06-21 | Plasma surfacing equipment for preventing inner hole cracks from being generated |
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| CN114932300A true CN114932300A (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210707427.XA Pending CN114932300A (en) | 2022-06-21 | 2022-06-21 | Plasma surfacing equipment for preventing inner hole cracks from being generated |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN203526786U (en) * | 2013-07-08 | 2014-04-09 | 武汉理工大学 | Automatic plasma built-up welding device for hot-forging die cavity coating |
| CN104308348A (en) * | 2014-10-15 | 2015-01-28 | 武汉高力热喷涂工程有限责任公司 | Gantry type middle groove powder plasma overlaying machine, control system and control method |
| CN107598351A (en) * | 2017-09-13 | 2018-01-19 | 浙江富春江水电设备有限公司 | The cylindrical large area plasma overlaying method of Stellite cobalt-base alloys |
| CN110280878A (en) * | 2019-07-29 | 2019-09-27 | 武汉高力热喷涂工程有限责任公司 | A kind of double cantilever rush-harvesting and rush-planting even numbers control plasma surfacing machines |
| CN113134669A (en) * | 2021-04-26 | 2021-07-20 | 西北工业大学 | Heating device in plasma welding box |
| CN113634953A (en) * | 2021-08-25 | 2021-11-12 | 无锡市福莱达石油机械有限公司 | Preheating and heat preservation method for valve seat |
-
2022
- 2022-06-21 CN CN202210707427.XA patent/CN114932300A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009241142A (en) * | 2008-03-31 | 2009-10-22 | Ihi Corp | Plasma arc build-up welding equipment and method |
| CN101768739A (en) * | 2009-12-11 | 2010-07-07 | 天津悦华工贸有限公司 | Dedicated intelligent array wire welding plasma coating device |
| CN102078997A (en) * | 2011-01-26 | 2011-06-01 | 济南华奥电焊机有限公司 | Special machine for welding pipeline with small pipe diameter |
| CN202388114U (en) * | 2011-12-14 | 2012-08-22 | 武汉长江融达电子有限公司 | Automatic plasma welding machine |
| CN203526786U (en) * | 2013-07-08 | 2014-04-09 | 武汉理工大学 | Automatic plasma built-up welding device for hot-forging die cavity coating |
| CN104308348A (en) * | 2014-10-15 | 2015-01-28 | 武汉高力热喷涂工程有限责任公司 | Gantry type middle groove powder plasma overlaying machine, control system and control method |
| CN107598351A (en) * | 2017-09-13 | 2018-01-19 | 浙江富春江水电设备有限公司 | The cylindrical large area plasma overlaying method of Stellite cobalt-base alloys |
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| CN113134669A (en) * | 2021-04-26 | 2021-07-20 | 西北工业大学 | Heating device in plasma welding box |
| CN113634953A (en) * | 2021-08-25 | 2021-11-12 | 无锡市福莱达石油机械有限公司 | Preheating and heat preservation method for valve seat |
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