CN102513649A - Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head - Google Patents
Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head Download PDFInfo
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- CN102513649A CN102513649A CN2011104514458A CN201110451445A CN102513649A CN 102513649 A CN102513649 A CN 102513649A CN 2011104514458 A CN2011104514458 A CN 2011104514458A CN 201110451445 A CN201110451445 A CN 201110451445A CN 102513649 A CN102513649 A CN 102513649A
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Abstract
The invention relates to a single-wire submerged arc surfacing welding electromagnetic stirring magnetic head, which consists of a tee joint, a welding torch, a magnetic core, a magnetic core ceramic protection cover, a magnetic guide nozzle, a welding flux conveying pipe, a magnetic guide nozzle protection cover and a hollow copper solenoid, wherein the tee joint is arranged inside the magnetic core, the welding torch and the welding flux conveying pipe are installed on the tee joint, and the magnetic core ceramic protection cover and the hollow copper solenoid are installed outside the magnetic core. The hollow copper solenoid is wound inside a helical groove of the magnetic core ceramic protection cover, and two ends of the hollow copper solenoid are connected to cooling water through a hose. The magnetic guide nozzle is installed on the lower part of the magnetic core, and the magnetic core and the magnetic guide nozzle are welded together through a high-magnetic-conductivity ferromagnetic material. The magnetic guide nozzle and the magnetic core are connected together through the high-magnetic-conductivity material, the magnetic guide nozzle protection cover which is made of a high-temperature-resistant and insulated ceramic material is installed outside the magnetic guide nozzle, the hollow copper solenoid is wound on the magnetic core ceramic protection cover, and the cooling water flows inside the hollow copper solenoid so as to cool the hollow copper solenoid. By adopting the structure, the single-wire submerged arc surfacing welding electromagnetic stirring magnetic head not only is applicable to ordinary submerged arc surfacing welding, but also can realize a better submerged arc surfacing welding effect under a high-temperature environment.
Description
Technical field
Monofilament submerged arc overlay welding electromagnetic agitation magnetic head of the present invention belongs to welding technology field, relates to the submerged arc overlay welding technology, particularly a kind of electromagnetic agitation magnetic head that utilizes externally-applied magnetic field that the submerged arc overlay welding process is controlled.
Background technology
Present employed submerged-arc welding (containing submerged arc overlay welding and ESW etc.) is a kind of important welding method; Have advantages such as welding quality stable, welding productivity height, no arc light and flue dust are few, make it become the main welding method in the important steel construction manufacturing such as roller series products, pressure vessel.But in welding process,, form thick columanar structure easily, make the increase of submerged arc overlay welding layer tearing tendency property, limited the application of submerged-arc welding on high-precision end product because the protective effect of welding slag causes the molten bath heat radiation slow.Show that according to research externally-applied magnetic field can effectively stir welding pool, improve arc shape and weld metal microstructure, and then improve the anti-crack ability of deposited metal.The electromagnetic agitation effect depends primarily on magnetic induction intensity and distribution, and magnetic induction intensity and distribution are then by stirring the magnetic head decision.
The electromagnetic agitation magnetic head structure of prior art is fairly simple, adopts enamel-covered wire directly to be wrapped on the cored iron magnetic core more and processes.Have document to put down in writing a kind of split type electromagnetic agitation magnetic head structure, to be that fine enamelled wire is close process on magnetic core in inside, outside for feeding the hollow casing of cooling water.And the electromagnetic agitation magnetic head of this structure is used for gas metal-arc welding (being called for short the MAG weldering) welder more, and its water-cooling pattern has determined that the lead heat radiation is slower, exciting curent less (being generally several amperes to tens amperes).
(1) document " the magnetic head optimization and the application study of the big current MAG weldering of magnetic control " is introduced a kind of split type magnetic head structure; Top is that fine enamelled wire is wrapped on the magnetic core; Closed cavity between the upper and lower part carries out the water flowing cooling; Its water-cooled purpose is to prevent to cause magnetic conductive iron magnetic conduction ability drop because of the high temperature of electric arc, can't cool off exciting current less (being generally tens amperes) to magnet exciting coil.This kind magnetic head structure is used for gas metal-arc welding (being called for short the MAG weldering) more, is mainly used in the welding of cut deal workpiece, can not be used for submerged arc overlay welding.
(2) " the electromagnetic agitation magnetic head of double wire hidden arc welding machine " (patent No.: 201020121334); This patent is a kind of electromagnetic agitation magnetic head of double wire hidden arc welding machine; The magnetic core of its magnetic head places between two rifles of double wire hidden arc welding machine; Core structure and volume receive the welding gun structural limitations, and its special project organization can only be used for specific double wire hidden arc welding and connect equipment, can not be used for the monofilament submerged arc overlay welding.
In addition, this electromagnetic agitation magnetic head coil number of turn is many, volume big, heat radiation is slow, can only be applied to normal temperature environment, is not suitable for the submerged arc welding under the hot environment.To existing problem in the above-mentioned prior art, a kind of novel monofilament submerged arc overlay welding electromagnetic agitation magnetic head of research and design, existing problem is very necessary in the prior art thereby overcome.
Summary of the invention
In view of existing problem in the above-mentioned prior art; The objective of the invention is a kind of novel monofilament submerged arc overlay welding electromagnetic agitation magnetic head of research and design, thereby solve present electromagnetic agitation magnetic head structure and volume receives the welding gun structural limitations, can only be used for specific double wire hidden arc welding and connect equipment; In addition; This electromagnetic agitation magnetic head coil number of turn is many, volume big, heat radiation is slow, can only be applied to normal temperature environment, is not suitable for the problems such as submerged arc welding under the hot environment.A kind of electromagnetic agitation magnetic head that improves submerged arc overlay welding layer performance is provided, in weld deposit process, through the alternating current of magnetic control welding equipment generation; Make the electromagnetic agitation magnetic head produce alternating magnetic field, and import to alternating magnetic fields in the submerged arc overlay welding molten bath, it is dynamically controlled; Suppress the column crystals growth; Crystal grain thinning improves weldquality, can be applicable to normal temperature environment and hot environment.
Monofilament submerged arc overlay welding electromagnetic agitation magnetic head of the present invention is made up of threeway, welding gun, magnetic core, field winding coil and flux delivery pipe; Described threeway is positioned at magnetic core inside; Welding gun and flux delivery pipe are installed in the threeway, and outside commentaries on classics of magnetic core has the field winding coil.The field winding coil that be equipped with described magnetic core outside is made up of magnetic core ceramic protection cover and hollow copper solenoid.Hollow copper solenoid is wrapped in the helicla flute of magnetic core ceramic protection cover, and the solenoidal two ends of hollow copper are connected to cooling water tank through flexible pipe.The magnetic conduction mouth is equipped with in the magnetic core bottom, and magnetic core and magnetic conduction mouth are welded together by the high magnetic permeability ferromagnetic material.Magnetic conduction mouth protective cover is equipped with in magnetic conduction mouth outside.Magnetic conduction mouth protective cover of the present invention is formed by ceramic material high temperature resistant, insulation.Magnetic core ceramic protection cover of the present invention is to be processed by the heat insulation non-magnetic ceramic material of insulation.Threeway of the present invention is processed by non-magnet_conductible material.Magnetizing coil of the present invention is that hollow copper solenoid is processed, and inner logical cooling water cools off.
The threeway of monofilament submerged arc overlay welding electromagnetic agitation magnetic head of the present invention is positioned at magnetic core inside, is processed by non-magnet_conductible material, is used for fixing welding gun and flux delivery pipe, and is used for loading and shakeouing solder flux, and electric arc is formed excellent protection; Magnetic core and magnetic conduction mouth are welded together by the high magnetic permeability ferromagnetic material, and go deep into trying one's best near the molten bath in the solder flux to increase its magnetic conduction effect in the lower end of magnetic conduction mouth; Its outside is protected by magnetic conduction mouth protective cover; Magnetic conduction mouth protective cover is formed by ceramic material high temperature resistant, insulation, not only can isolate the heat from welding region, guarantees that the magnetic core temperature is unlikely too high; And do not influence DISTRIBUTION OF MAGNETIC FIELD, guarantee the electromagnetic agitation effect; The bending of hollow copper solenoid is wrapped on the magnetic core ceramic protection cover, and the inner cooling water that feeds cools off it; The magnetic core ceramic protection cover is to be processed by the heat insulation non-magnetic ceramic material of insulation; The length travel of magnetic head can be regulated so that reach best electromagnetic agitation effect flexibly.
In the monofilament submerged arc overlay welding electromagnetic agitation magnetic head course of work of the present invention; When hollow copper solenoid feeds exciting curent; Around the hollow copper solenoid of spiral, produce magnetic field; Because magnetic core and magnetic conduction mouth have higher magnetic conductivity, the magnetic field overwhelming majority that therefore hollow copper solenoid produces all concentrates in magnetic core and the magnetic conduction mouth, and the magnetic induction intensity in magnetic core and the magnetic conduction mouth is increased greatly.Magnetic field is produced by magnetic conduction mouth lower end and is transmitted in the welding pool, and welding pool is formed electromagnetic agitation.The magnetic conductivity of magnetic core and magnetic conduction mouth is big more, and the decay in magnetic field is more little.The magnetic conduction mouth is more near the molten bath, and the magnetic field at place, molten bath is strong more.Therefore, do not compare with the situation of magnetic conduction mouth with adding magnetic core, this design can produce bigger magnetic induction intensity at the place, molten bath under bigger exciting curent and less spiral copper pipe number of turn situation, reduced to stir the volume of magnetic head.Because magnetic core and magnetic conduction mouth all combine in most magnetic field wherein, magnetic environment such as workpiece also reduce the influence of electromagnetic agitation process thereupon, and hollow copper solenoid also away from electric arc and workpiece hot environment, can prolong its service life.
The monofilament submerged arc overlay welding electromagnetic agitation magnetic head course of work of the present invention is following:
In the submerged arc overlay welding repair process of roll; Threeway is placed in the outside of welding gun, guarantees that the welding position of welding gun is accurate, the magnetic core that the lower end is welded with the magnetic conduction mouth is placed in the threeway outside; And put the magnetic core ceramic protection cover in magnetic core outside; The hollow copper solenoid of the outer winding of magnetic core ceramic protection cover, magnetic conduction mouth protective cover is installed in magnetic conduction mouth lower end, inserts good flux delivery pipe.
Magnetic control roll submerged arc overlay welding prosthetic appliance is connected on the hollow copper solenoid through stube cable, and the cooling water that simultaneously cooling water tank is provided through flexible pipe also is connected on the hollow copper solenoid, adjusts the magnetic head integral position at last, makes it the operating position that reaches best.
Open the flux delivery valve, make solder flux be tiled in surface of the work, feed cooling water and realize cooling automatically, open welding machine and magnetic control roll submerged arc overlay welding prosthetic appliance power supply and carry out the reparation of magnetic control roll submerged arc overlay welding.
When the welding beginning; Through the alternating current that the magnetic control welding equipment produces, make the electromagnetic agitation magnetic head produce alternating magnetic field, and import to alternating magnetic fields in the submerged arc overlay welding molten bath; It is dynamically controlled; Agitation molten pool, thinning microstructure structure are improved appearance of weld, the final purpose that realizes improving welding quality.
Monofilament submerged arc overlay welding electromagnetic agitation magnetic head of the present invention connects together with magnetic core the magnetic conduction mouth with high permeability material, the magnetic conduction mouth has magnetic conduction mouth protective cover outward, and hollow copper solenoid is wound on the magnetic core ceramic protection cover, and interior logical cooling water cools off.This structure is not only applicable to common submerged arc overlay welding, and very good to the submerged arc overlay welding effect under the hot environment.
Monofilament submerged arc overlay welding electromagnetic agitation magnetic head advantage of the present invention and effect:
1, the electromagnetic agitation magnetic head structure is compact, and volume is little, and it is convenient to go up and down;
2, adopt inner logical recirculated water cooling mode magnetizing coil to be cooled off good cooling results;
3, magnetic core, magnetic conduction mouth and copper pipe place among the ceramic protection cover, and promptly insulation is heat insulation again;
4, this device can be used for hot environment with big electric current, low number of turn magnetic head, produces high-intensity magnetic field, has overcome the shortcoming of magnetic head in the past, has good versatility.
Estimate economic effect:
Can know that through retrieval the monofilament submerged arc overlay welding electromagnetic agitation magnetic head that we developed has essential difference in principle and structure and prior art.
And our this monofilament submerged arc overlay welding electromagnetic agitation magnetic head newly developed, its unique design structure and the type of cooling are fit to use in any environment, and respond well.
It is predicted that all kinds of rollers that annual national each big steel mill scraps are worth and reach 18,000,000,000 yuan, wherein near half the roller can be repaired, utilize, and the market of regeneration in every year roller reaches 30～4,000,000,000 yuan.
Roll is one of three big expendable parts of metallurgy industry, and the present annual consumption of China is more than 800,000 tons, and wherein considerable part can adopt the bead-welding technology reparation.This design can improve welding quality greatly, is extended to large-scale roller and repairs the field, reduces repair rate simultaneously, enhances productivity.
If this electromagnetic stirring equipment and process are adopted in the reparation of regeneration roller, calculate by occupation rate of market 5%, will produce direct or indirect economic benefit every year more than 1.5 hundred million yuan.
Description of drawings
The present invention has two width of cloth accompanying drawings, wherein:
Fig. 1 is a monofilament submerged arc overlay welding electromagnetic agitation magnetic head structure sketch map;
Fig. 2 is submerged arc overlay welding electromagnetic agitation Welder mapping.
Among the figure: 1, threeway 2, welding gun 3, magnetic core 4, magnetic core ceramic protection cover 5, magnetic conduction mouth 6, flux delivery pipe 7, magnetic conduction mouth protective cover 8, hollow copper solenoid 9, magnetic head 10, magnetic control roll submerged arc overlay welding machine 11, cooling water tank 12, delivery port 13, water return outlet 14, starting switch 15, output port.
The specific embodiment
Practical implementation of the present invention is for example shown in the accompanying drawing; The electromagnetic agitation of monofilament submerged arc overlay welding shown in the accompanying drawing 1 magnetic head; Form by threeway 1, welding gun 2, magnetic core 3, magnetic core ceramic protection cover 4, magnetic conduction mouth 5, flux delivery pipe 6, magnetic conduction mouth protective cover 7 and 8 on hollow copper solenoid; Described threeway 1 is positioned at magnetic core 3 inside, and welding gun 2 is installed in the threeway 1 with flux delivery pipe 6, and magnetic core ceramic protection cover 4 and hollow copper solenoid 8 are equipped with in magnetic core 3 outsides.Hollow copper solenoid 8 is wrapped in the helicla flute of magnetic core ceramic protection cover 4, and the two ends of hollow copper solenoid 8 are connected to cooling water 11 through flexible pipe.Magnetic conduction mouth 5 is equipped with in magnetic core 3 bottoms, and magnetic core 3 is welded together by the high magnetic permeability ferromagnetic material with magnetic conduction mouth 5.Magnetic conduction mouth protective cover 7 is equipped with in magnetic conduction mouth 5 outsides.Described magnetic conduction mouth protective cover 7 is formed by ceramic material high temperature resistant, insulation.Described magnetic core ceramic protection cover 4 is to be processed by the heat insulation non-magnetic ceramic material of insulation.Described threeway 1 is processed by non-magnet_conductible material.
Claims (4)
1. monofilament submerged arc overlay welding electromagnetic agitation magnetic head; Form by threeway (1), welding gun (2), magnetic core (3), field winding coil and flux delivery pipe (6); Described threeway (1) is positioned at magnetic core (3) inside; Welding gun (2) and flux delivery pipe (6) are installed in the threeway (1), and the field winding coil is equipped with in magnetic core (3) outside; It is characterized in that the field winding coil that is equipped with described magnetic core (3) outside is made up of magnetic core ceramic protection cover (4) and hollow copper solenoid (8); Hollow copper solenoid (8) is wrapped in the helicla flute of magnetic core ceramic protection cover (4), and the two ends of hollow copper solenoid (8) are connected to cooling water tank (11) through flexible pipe; Magnetic conduction mouth (5) is equipped with in magnetic core (3) bottom, and magnetic core (3) and magnetic conduction mouth (5) are welded together by the high magnetic permeability ferromagnetic material; Magnetic conduction mouth protective cover (7) is equipped with in magnetic conduction mouth (5) outside.
2. monofilament submerged arc overlay welding electromagnetic agitation magnetic head according to claim 1 is characterized in that described magnetic conduction mouth protective cover (7) and magnetic core ceramic protection cover (4) are to be processed by the heat insulation non-magnetic ceramic material of insulation.
3. monofilament submerged arc overlay welding electromagnetic agitation magnetic head according to claim 1 is characterized in that described threeway (1) processed by non-magnet_conductible material.
4. monofilament submerged arc overlay welding electromagnetic agitation magnetic head according to claim 1 is characterized in that described magnetizing coil is that hollow copper solenoid (8) is processed, inner logical cooling water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110451445.8A CN102513649B (en) | 2011-12-29 | 2011-12-29 | Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head |
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| CN201110451445.8A CN102513649B (en) | 2011-12-29 | 2011-12-29 | Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head |
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| CN102513649A true CN102513649A (en) | 2012-06-27 |
| CN102513649B CN102513649B (en) | 2015-03-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308340A (en) * | 2014-10-22 | 2015-01-28 | 什邡市同佳机械有限公司 | Method of common automatic submerged-arc welding machine for welding small-diameter barrel butting seams |
| CN105537739A (en) * | 2016-02-25 | 2016-05-04 | 哈尔滨工业大学（威海） | Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device |
| CN113042860A (en) * | 2021-03-15 | 2021-06-29 | 沈阳工业大学 | High-frequency longitudinal magnetic field generating device for magnetic control welding |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08300150A (en) * | 1995-05-01 | 1996-11-19 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic stirring welding equipment |
| CN101462196A (en) * | 2008-12-31 | 2009-06-24 | 重庆大学 | Method and equipment for electromagnetic composite double-face submerged arc welding of diphase stainless steel thick plate |
| CN201669494U (en) * | 2010-02-26 | 2010-12-15 | 中国海洋石油总公司 | Electromagnetic stirring magnetic head of twin-wire submerged arc welding machine |
| CN102039476A (en) * | 2009-10-15 | 2011-05-04 | 中国海洋石油总公司 | Electromagnetic stirring magnetic head of double-wire submerged arc welding machine |
| CN202461770U (en) * | 2011-12-29 | 2012-10-03 | 大连华锐重工集团股份有限公司 | Electromagnetic stirring head for single-wire submerged arc surfacing |
-
2011
- 2011-12-29 CN CN201110451445.8A patent/CN102513649B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08300150A (en) * | 1995-05-01 | 1996-11-19 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic stirring welding equipment |
| CN101462196A (en) * | 2008-12-31 | 2009-06-24 | 重庆大学 | Method and equipment for electromagnetic composite double-face submerged arc welding of diphase stainless steel thick plate |
| CN102039476A (en) * | 2009-10-15 | 2011-05-04 | 中国海洋石油总公司 | Electromagnetic stirring magnetic head of double-wire submerged arc welding machine |
| CN201669494U (en) * | 2010-02-26 | 2010-12-15 | 中国海洋石油总公司 | Electromagnetic stirring magnetic head of twin-wire submerged arc welding machine |
| CN202461770U (en) * | 2011-12-29 | 2012-10-03 | 大连华锐重工集团股份有限公司 | Electromagnetic stirring head for single-wire submerged arc surfacing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308340A (en) * | 2014-10-22 | 2015-01-28 | 什邡市同佳机械有限公司 | Method of common automatic submerged-arc welding machine for welding small-diameter barrel butting seams |
| CN104308340B (en) * | 2014-10-22 | 2016-06-29 | 什邡市同佳机械有限公司 | The method welding cylinders with small diameter butt weld with common automatic submerged-arc welding machine |
| CN105537739A (en) * | 2016-02-25 | 2016-05-04 | 哈尔滨工业大学（威海） | Negative electrode forced cooling and magnetic control compression combined type small hole TIG welding device |
| CN113042860A (en) * | 2021-03-15 | 2021-06-29 | 沈阳工业大学 | High-frequency longitudinal magnetic field generating device for magnetic control welding |
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| CN102513649B (en) | 2015-03-11 |
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Inventor after: Zhao Weiyan Inventor after: Meng Xiaoxia Inventor after: Zhang Guangwei Inventor after: Jiang Lifeng Inventor before: Wang Hui Inventor before: Meng Xiaoxia Inventor before: Zhang Guangwei Inventor before: Yin Yandong |
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Free format text: CORRECT: INVENTOR; FROM: WANG HUI MENG XIAOXIA ZHANG GUANGWEI YIN YANDONG TO: ZHAO WEIYAN MENG XIAOXIA ZHANG GUANGWEI JIANG LIFENG |
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