CN2083976U - Powdered plasma build-up welding gun - Google Patents
Powdered plasma build-up welding gun Download PDFInfo
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- CN2083976U CN2083976U CN 90226367 CN90226367U CN2083976U CN 2083976 U CN2083976 U CN 2083976U CN 90226367 CN90226367 CN 90226367 CN 90226367 U CN90226367 U CN 90226367U CN 2083976 U CN2083976 U CN 2083976U
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- welding gun
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Abstract
The utility model discloses a powder plasma surfacing welding gun, comprising a catelectrode, a catelectrode supporting base, an upper spray nozzle body, a lower spray nozzle body, cooling chambers, a chilled water passageway, a power and gas sending passageway, etc. The best angle of incidence of powder in the lower spray nozzle of the welding gun is 50 DEG. The catelectrode of the welding gun and an upper gun body form integration, and the upper spray nozzle and a lower gun body form integration. The catelectrode and the upper and lower spray nozzle body adopt individual cooling system, and each cooling chamber equally adopts brazing seal structure. The utility model decreases the degree of superheat for ejecting powder when compression ratio is < or =1.1, so that the deficiency of the loosening of the surface of weldment can be effectively overcome. The utility model has the advantages of simple structure, good tightness, easy disassembly and assembly and long service life.
Description
Utility model relates to a kind of powder plasma built-up welding welding gun.
As everyone knows, the powder plasma built-up welding is to utilize plasma arc to be thermal source, does to fill metal with Powdered alloy, and surface of the work and resurfacing welding material are melted simultaneously, two kinds of metals are mixed mutually constitute the molten bath, final set crystallizes into a kind of overlaying method of overlay cladding.For alloys such as Ni base that the rarefaction defect tendency is arranged and Co bases, wish that degree of superheat is lower, can make molten bath amount of contraction in cooling procedure less, thereby reduce the probability that rarefaction defect produces.But powder plasma built-up welding welding gun commonly used is at present often only noted the influence of the compression ratio of nozzle to the molten bath degree of superheat, generally all adopt to reduce to compress and recently reduce the arc column temperature, thereby reduce the molten bath degree of superheat, the molten bath degree of superheat is also had this one side of considerable influence and ignored the powder incidence angle.In general, the powder incidence angle is more little, and the powder focus point is near more from nozzle-end, and the arc column temperature is high more.Therefore the overheating powder degree is serious more, has also just increased the degree of superheat in molten bath accordingly.The best powder incidence angle of the powder plasma welding gun recommendation of adopting at present is 30 °, powder focuses on about the 3.2mm of jet expansion below, the arc column temperature is up to 18000 ° more than the k herein, so the overheated tendency of powder and bath is bigger, though the compression ratio of welding gun is less, but still can not prevent the generation of rarefaction defect effectively.
In addition, powder plasma built-up welding welding gun at present commonly used, the problem of normal appearance is a rifle body infiltration phenomenon in weld deposit process.Because infiltration has reduced the cooling effect of welding gun, severe patient can the scaling loss nozzle.In addition, because the seepage of water makes the powder humidity, thereby cause stifled rifle easily; Because infiltration, overlay cladding easily produces defectives such as pore.The main cause that produces the problems referred to above is because present plasma gun generally all is by upper cutting gun, the intermediate insulation body, and lower gun body, top nozzle, following nozzle, protective cover, tungsten electrode, water-cooling channel is supplied gas, and the powder feeding passage is formed (as Chinese patent CN87210474U).Because upper cutting gun and tungsten electrode are negative electrode, lower gun body and top nozzle are anode, and upper and lower rifle body in weld deposit process, tungsten electrode and upper and lower nozzle all need water flowing cooling, are the water inlet pipe and water outlet pipe quantity that reduces the rifle body, generally all cooling chamber are designed to that inside is interconnected.Because need the parts of cooling more, the rifle body requires again and can dismantle, therefore all adopt O type circle or sealing gasket to seal at need dismounting position.But the poor reliability of this sealing often in use has water leakage, thereby influences cooling effect and surfacing quality, even causes burning the rifle body, influences welding gun service life.
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can reduce the molten bath degree of superheat, reduces the face of weld rarefaction defect, and seals novel powder plasma surfacing welding gun reliable, simple in structure.
Goal of the invention of the present utility model is achieved in that a kind of novel powder plasma surfacing welding gun, and it comprises negative electrode, cathode bearing, top nozzle body, following nozzle body, cooling chamber, cooling-water duct and powder feeding, plenum duct.Described negative electrode is by overcoat, middle water guide dividing plate, and tungsten electrode, aqueduct and three-way connection are formed; Described cathode bearing is by adjusting nut, hold-down nut, and locking nut, spring, insulator and ion conductance mouth are formed; Described top nozzle body is by top nozzle, and top nozzle overcoat and aqueduct are formed; Described nozzle body down is by following nozzle, and following nozzle closure and following nozzle aqueduct are formed; Powder incidence angle α value between 40-60 ° of described down nozzle, optimum angle alpha=50 °.Have independent cooling chamber A, B and C on described negative electrode and the upper and lower nozzle body respectively, each cooling chamber all adopts the sealed with brazing structure.
Powder plasma built-up welding welding gun of the present utility model is owing to increase powder incidence angle to 50 °, the focus point that makes powder feeding is below the nozzle about 10mm, the temperature of arc column is lower in addition, significantly reduced the temperature when powder is injected the molten bath, thereby reduced the molten bath degree of superheat, be equipped with≤condition of 1.1 compression ratios under, overcome the rarefaction defect on weldment surface effectively.Owing to need each parts of cooling to adopt separately independently cooling chamber and cooling duct, and each cooling chamber all adopts the hermetically-sealed construction of soldering, thereby simple in structure, good airproof performance, easy disassembling, the service life of having improved welding gun.
Describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is the cross-sectional view of powder plasma built-up welding welding gun of the present utility model.
Fig. 2 is the generalized section of following nozzle in the powder plasma built-up welding welding gun of the present utility model.
Referring to Fig. 1 and Fig. 2, powder plasma built-up welding welding gun of the present utility model is by negative electrode (1), cathode bearing (2), and top nozzle body (3), following nozzle body parts such as (4) is formed.Negative electrode (1) is by overcoat (101), middle water guide dividing plate (102), and tungsten electrode (103), aqueduct (104) and three-way connection (105) are formed.Between aqueduct (104), water guide dividing plate (102) and three-way connection (105) and tungsten electrode (103) and overcoat (101), all adopt sealed with brazing to form negative electrode cooling chamber A between three-way connection (105) and the overcoat (101).Adopt between negative electrode (1) and the cathode bearing (2) and be threaded.Cathode bearing (2) is by adjusting nut (201), hold-down nut (202), and locking nut (203), spring (204), insulator (205) and ion conductance mouth (206) are formed.Insulator (205) is connected by screw (7) with top nozzle body (3).Top nozzle body (3) is by top nozzle (301), and top nozzle overcoat (302) and aqueduct (303) are formed.All adopt sealed with brazing to form top nozzle body cooling chamber B between aqueduct (303) and the top nozzle overcoat (302) and between top nozzle (301) and the overcoat (302).Top nozzle overcoat (302) is connected with following nozzle body (4) by screw.Following nozzle body (4) is by following nozzle (401), and following nozzle closure (402) and following nozzle aqueduct (403) are formed.The powder incidence angle α of following nozzle can be between 40-60 ° value, optimum angle alpha=50 °.Adopt sealed with brazing to form down nozzle body cooling chamber C between nozzle (401) and the following nozzle aqueduct (403) under reaching between following nozzle (401) and the following nozzle closure (402).(5) be the powder feeding conduit, (6) are the powder feeding ring.Aqueduct (104) in the negative electrode (1) links to each other with the negative electrode of power supply, and the aqueduct (303) in the top nozzle body (3) links to each other with the anode of power supply.Described negative electrode (1) and upper cutting gun unite two into one, top nozzle body (3) and lower gun body unite two into one, need the parts of cooling to have only negative electrode (1) like this, top nozzle body (3) and following nozzle body (4), because each parts adopts separately independently cooling duct, the quantity of water inlet pipe and water outlet pipe is few, can not influence mounting or dismounting.And each cooling chamber all adopts the hermetically-sealed construction of soldering.So just fundamentally stop the seepage phenomenon, guaranteed the sealing of rifle body.
Claims (4)
1, a kind of novel powder plasma surfacing welding gun is by negative electrode, cathode bearing, and the top nozzle body, following nozzle body, cooling chamber, cooling-water duct and powder feeding, plenum duct is formed, and it is characterized in that:
(1) described cathode is by overcoat, middle water guide dividing plate, and tungsten electrode, aqueduct and three-way connection are formed;
(2) described cathode bearing is by adjusting nut, hold-down nut, and locking nut, spring, insulator and ion conductance mouth are formed;
(3) described top nozzle body is by top nozzle, and top nozzle overcoat and aqueduct are formed;
(4) described nozzle body down is by following nozzle, and following nozzle closure and following nozzle aqueduct are formed;
(5) described powder incidence angle α value between 40 ° to 60 ° of nozzle down.
2, novel powder plasma surfacing welding gun according to claim 1 is characterized in that: described powder incidence angle α=50 °.
3, novel powder plasma surfacing welding gun according to claim 1, it is characterized in that: have independent cooling chamber respectively on described negative electrode and the upper and lower nozzle body, each cooling chamber all adopts the structure of sealed with brazing.
4, novel powder plasma surfacing welding gun according to claim 1 is characterized in that: described negative electrode and upper cutting gun constitute an integral body, and described top nozzle body and lower gun body constitute an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226367 CN2083976U (en) | 1990-12-26 | 1990-12-26 | Powdered plasma build-up welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226367 CN2083976U (en) | 1990-12-26 | 1990-12-26 | Powdered plasma build-up welding gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2083976U true CN2083976U (en) | 1991-09-04 |
Family
ID=4903635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90226367 Withdrawn CN2083976U (en) | 1990-12-26 | 1990-12-26 | Powdered plasma build-up welding gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2083976U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104203477A (en) * | 2012-02-28 | 2014-12-10 | 苏舍美特科（美国）公司 | Extended cascade plasma gun |
| CN104244557A (en) * | 2014-08-11 | 2014-12-24 | 北京交通大学 | Atmosphere protection coaxial powder feeding plasma gun |
| CN104289802A (en) * | 2013-07-15 | 2015-01-21 | 昆山华焊科技有限公司 | Secondary compression type plasma welding gun |
| CN104668743A (en) * | 2014-12-25 | 2015-06-03 | 哈尔滨工业大学 | Plasma-arc welding device implemented by aid of TIG (tungsten inert gas) welding method |
| CN105171214A (en) * | 2015-10-16 | 2015-12-23 | 吴忠仪表有限责任公司 | PTA central tungsten electrode powder-feeding device |
| CN106001878A (en) * | 2016-06-24 | 2016-10-12 | 宁波驰迈激光科技有限公司 | Plasma surfacing device |
| CN106001879A (en) * | 2016-06-24 | 2016-10-12 | 宁波驰迈激光科技有限公司 | Gun body structure of plasma surfacing welding gun |
| CN106624305A (en) * | 2017-01-09 | 2017-05-10 | 宁波驰迈激光科技有限公司 | Powder plasma surfacing torch for inner holes |
| CN106944728A (en) * | 2017-05-23 | 2017-07-14 | 东方电气集团东方汽轮机有限公司 | A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type |
| CN107971614A (en) * | 2017-12-28 | 2018-05-01 | 无锡宝威焊割设备有限公司 | Argon-arc welding gun pipette tips |
| CN109570915A (en) * | 2018-11-05 | 2019-04-05 | 浙江富春江水电设备有限公司 | The bearing processing method of the processing unit (plant) and application of large-scale the hydrostatic bearing device |
| CN109732185A (en) * | 2019-03-06 | 2019-05-10 | 山东职业学院 | A kind of novel plasma powder weld deposition welding gun structure |
| CN111411355A (en) * | 2020-03-17 | 2020-07-14 | 天津大学 | Conical powder feeding device for ultrahigh-speed plasma cladding and ultrahigh-speed plasma cladding method |
-
1990
- 1990-12-26 CN CN 90226367 patent/CN2083976U/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104203477A (en) * | 2012-02-28 | 2014-12-10 | 苏舍美特科（美国）公司 | Extended cascade plasma gun |
| CN104289802A (en) * | 2013-07-15 | 2015-01-21 | 昆山华焊科技有限公司 | Secondary compression type plasma welding gun |
| CN104244557A (en) * | 2014-08-11 | 2014-12-24 | 北京交通大学 | Atmosphere protection coaxial powder feeding plasma gun |
| CN104668743A (en) * | 2014-12-25 | 2015-06-03 | 哈尔滨工业大学 | Plasma-arc welding device implemented by aid of TIG (tungsten inert gas) welding method |
| CN104668743B (en) * | 2014-12-25 | 2016-09-07 | 哈尔滨工业大学 | A kind of device utilizing TIG weld method to realize PLASMA ARC WELDING |
| CN105171214A (en) * | 2015-10-16 | 2015-12-23 | 吴忠仪表有限责任公司 | PTA central tungsten electrode powder-feeding device |
| CN106001878A (en) * | 2016-06-24 | 2016-10-12 | 宁波驰迈激光科技有限公司 | Plasma surfacing device |
| CN106001879A (en) * | 2016-06-24 | 2016-10-12 | 宁波驰迈激光科技有限公司 | Gun body structure of plasma surfacing welding gun |
| CN106624305A (en) * | 2017-01-09 | 2017-05-10 | 宁波驰迈激光科技有限公司 | Powder plasma surfacing torch for inner holes |
| CN106944728A (en) * | 2017-05-23 | 2017-07-14 | 东方电气集团东方汽轮机有限公司 | A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type |
| CN106944728B (en) * | 2017-05-23 | 2019-07-02 | 东方电气集团东方汽轮机有限公司 | A kind of small Hole plasma welding rifle of the miniature depth of full water cooling type |
| CN107971614A (en) * | 2017-12-28 | 2018-05-01 | 无锡宝威焊割设备有限公司 | Argon-arc welding gun pipette tips |
| CN109570915A (en) * | 2018-11-05 | 2019-04-05 | 浙江富春江水电设备有限公司 | The bearing processing method of the processing unit (plant) and application of large-scale the hydrostatic bearing device |
| CN109570915B (en) * | 2018-11-05 | 2021-01-12 | 中国原子能科学研究院 | Machining device for large hydrostatic bearing and bearing machining method using machining device |
| CN109732185A (en) * | 2019-03-06 | 2019-05-10 | 山东职业学院 | A kind of novel plasma powder weld deposition welding gun structure |
| CN111411355A (en) * | 2020-03-17 | 2020-07-14 | 天津大学 | Conical powder feeding device for ultrahigh-speed plasma cladding and ultrahigh-speed plasma cladding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |