CN102513649B - 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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- CN102513649B CN102513649B CN201110451445.8A CN201110451445A CN102513649B CN 102513649 B CN102513649 B CN 102513649B CN 201110451445 A CN201110451445 A CN 201110451445A CN 102513649 B CN102513649 B CN 102513649B
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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
Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head of the present invention belongs to welding technology field, relates to submerged arc overlay welding technology, particularly a kind of electromagnetic stirring magnetic head utilizing externally-applied magnetic field to control submerged arc overlay welding process.
Background technology
The submerged-arc welding (containing submerged arc overlay welding and ESW etc.) used at present is a kind of important welding method, have welding quality stable, welding productivity high, without arc light and the advantage such as flue dust is few, become the main welding method in the important manufacture of steel structures such as roller series products, pressure vessel.But in welding process, it is slow that the protective effect due to welding slag causes molten bath to be dispelled the heat, and easily forms thick columanar structure, make submerged-arc surfacing layer tearing tendency increase, limit the application of submerged-arc welding on high-precision end product.Show according to the study, externally-applied magnetic field effectively can stir welding pool, improves arc shape and microstructures of weld metals, and then improves the anti-crack ability of deposited metal.Electromagnetic agitation effect depends primarily on magnetic induction intensity and distribution, and magnetic induction intensity and distribution are then determined by stirring magnetic head.
The electromagnetic stirring magnetic head of prior art is relatively simple for structure, and many employing enamel-covered wires are directly wrapped on cored iron magnetic core to be made.Have document to record a kind of Split electromagnetic and stir magnetic head structure, to be that fine enamelled wire is close make on magnetic core in inside, the outside hollow casing for passing into cooling water.And the electromagnetic stirring magnetic head of this structure is used for gas metal-arc welding (being called for short MAG weldering) welder, it is comparatively slow that its water-cooling pattern determines wire heat radiation, exciting curent less (being generally several amperes to tens amperes).
(1) a kind of Split type magnetic header structure introduced by document " the magnetic head optimization of magnetic control high current MAG welding and application study ", top is that fine enamelled wire is wrapped on magnetic core, closed cavity between upper and lower part carries out water flowing cooling, its water-cooled object prevents the high temperature because of electric arc from causing magnetic conductive iron magnetic conduction ability to decline, cannot cool magnet exciting coil, exciting current less (being generally tens amperes).This kind of magnetic head structure is used for gas metal-arc welding (being called for short MAG weldering), is mainly used in the welding of cut deal workpiece, can not be used for submerged arc overlay welding.
(2) " electromagnetic stirring magnetic head of wire submerged arc welding machine " (patent No.: 201020121334), this patent is a kind of electromagnetic stirring magnetic head of wire submerged arc welding machine, the magnetic core of its magnetic head is placed between two rifles of wire submerged arc welding machine, core structure and volume are subject to welding gun structure restriction, its special project organization can only connect equipment for specific double wire hidden arc welding, can not be used for monofilament submerged arc overlay welding.
In addition, this electromagnetic stirring magnetic head coil turn is many, volume large, heat radiation is slow, can only be applied to normal temperature environment, not be suitable for the submerged arc welding under hot environment.For problem existing in above-mentioned prior art, a kind of novel single-wire submerged arc surfacing welding electromagnetic stirring magnetic head of research and design, thus the problem existing for overcoming in prior art is very necessary.
Summary of the invention
In view of problem existing in above-mentioned prior art, the object of the invention is a kind of novel single-wire submerged arc surfacing welding electromagnetic stirring magnetic head of research and design, thus solve current electromagnetic stirring magnetic head structure and volume and be subject to welding gun structure restriction, specific double wire hidden arc welding can only be used for and connect equipment, in addition, this electromagnetic stirring magnetic head coil turn is many, volume large, heat radiation is slow, can only be applied to normal temperature environment, not be suitable for the problems such as the submerged arc welding under hot environment.A kind of electromagnetic stirring magnetic head improving submerged-arc surfacing layer performance is provided, in weld deposit process, by the alternating current that magnetic control welding equipment produces, make electromagnetic stirring magnetic head produce alternating magnetic field, and the magnetic field of alternation is imported in submerged arc overlay welding molten bath, Dynamic controlling is carried out to it, suppress column crystals growth, crystal grain thinning, improves weldquality, can be applicable to normal temperature environment and hot environment.
Single-wire submerged arc surfacing welding electromagnetic stirring 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 arranged in threeway, and field winding coil is equipped with in magnetic core outside.The field winding coil that described magnetic core outside is equipped with 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 by flexible pipe.Magnetic guide nozzle is equipped with in magnetic core bottom, and magnetic core and magnetic guide nozzle are welded together by high magnetic permeability ferromagnetic material.Magnetic guide nozzle protective cover is housed outside magnetic guide nozzle.Magnetic guide nozzle protective cover of the present invention and magnetic core ceramic protection cover are made up of the non-magnetic ceramic material of insulated heat.Threeway of the present invention is made up of non-magnet_conductible material.Field winding coil of the present invention is that hollow copper solenoid is made, and inner logical cooling water cools.
The threeway of single-wire submerged arc surfacing welding electromagnetic stirring magnetic head of the present invention is positioned at magnetic core inside, is made up of non-magnet_conductible material, for fixing welding gun and flux delivery pipe, and for loading and shakeouing solder flux, forms good protection to electric arc; Magnetic core and magnetic guide nozzle are welded together by high magnetic permeability ferromagnetic material, and go deep into trying one's best near molten bath to increase its magnetic conduction effect in solder flux in the lower end of magnetic guide nozzle; Protected by magnetic guide nozzle protective cover outside it, magnetic guide nozzle protective cover is formed by ceramic material that is high temperature resistant, insulation, not only can isolate the heat from welding region, ensures that magnetic core temperature is unlikely too high, and do not affect the distribution in magnetic field, ensure electromagnetic agitation effect; Hollow copper solenoid is bending to be wrapped on magnetic core ceramic protection cover, and inside passes into cooling water and cools it; Magnetic core ceramic protection cover is made up of the non-magnetic ceramic material of insulated heat; The length travel of magnetic head can regulate flexibly to reach best electromagnetic agitation effect.
In the single-wire submerged arc surfacing welding electromagnetic stirring magnetic head course of work of the present invention, when hollow copper solenoid passes into exciting curent, magnetic field is produced around the hollow copper solenoid of spiral, because magnetic core and magnetic guide nozzle have higher magnetic conductivity, therefore the magnetic field overwhelming majority that hollow copper solenoid produces all concentrates in magnetic core and magnetic guide nozzle, and the magnetic induction intensity in magnetic core and magnetic guide nozzle is increased greatly.Magnetic field is produced by magnetic guide nozzle lower end and is transmitted in welding pool, forms electromagnetic agitation to welding pool.The magnetic conductivity of magnetic core and magnetic guide nozzle is larger, and the decay in magnetic field is less.Magnetic guide nozzle is more close to molten bath, and the magnetic field at molten bath place is stronger.Therefore, and do not add magnetic core and compare with the situation of magnetic guide nozzle, this design can produce larger magnetic induction intensity at molten bath place under larger exciting curent and less spiral copper pipe number of turn situation, reduces the volume stirring magnetic head.Because most magnetic field all combines in wherein by magnetic core and magnetic guide nozzle, the magnetic environment such as workpiece also reduce the impact of electromagnetic agitation process thereupon, and hollow copper solenoid also away from electric arc and workpiece hot environment, can extend its service life.
The single-wire submerged arc surfacing welding electromagnetic stirring magnetic head course of work of the present invention is as follows:
In the submerged arc overlay welding repair process of roll; threeway is placed on the outside of welding gun; ensure that the welding position of welding gun is accurate; magnetic core lower end being welded with magnetic guide nozzle is placed on threeway outside; and magnetic core ceramic protection cover on overlapping outside magnetic core; magnetic core ceramic protection cover is wound around hollow copper solenoid outward, and magnetic guide nozzle protective cover is installed in magnetic guide nozzle lower end, is plugged flux delivery pipe.
Magnetic control roll submerged arc overlay welding prosthetic appliance is connected on hollow copper solenoid by stube cable, cooling water tank is also connected on hollow copper solenoid by the cooling water that flexible pipe provides simultaneously, finally adjust magnetic head integral position, make it to reach best operating position.
Open flux delivery valve, make solder flux be laid in surface of the work, pass into cooling water and realize cooling automatically, unlatching welding machine and magnetic control roll submerged arc overlay welding prosthetic appliance power supply carry out the reparation of magnetic control roll submerged arc overlay welding.
When welding beginning, by the alternating current that magnetic control welding equipment produces, electromagnetic stirring magnetic head is made to produce alternating magnetic field, and the magnetic field of alternation is imported in submerged arc overlay welding molten bath, Dynamic controlling is carried out to it, agitation molten pool, thinning microstructure structure, improve appearance of weld, the final object realizing raising welding quality.
Magnetic guide nozzle connects together with magnetic core high permeability material by single-wire submerged arc surfacing welding electromagnetic stirring magnetic head of the present invention, has magnetic guide nozzle protective cover outside magnetic guide nozzle, and hollow copper solenoid is wound on magnetic core ceramic protection cover, and interior logical cooling water cools.This structure is not only applicable to common submerged arc overlay welding, and very good to the submerged arc overlay welding effect under hot environment.
Single-wire submerged arc surfacing welding electromagnetic stirring magnetic head advantage of the present invention and effect:
1, electromagnetic stirring magnetic head compact conformation, volume is little, and lifting is convenient;
2, inner logical circulating water mode is adopted to cool field winding coil, good cooling results;
3, magnetic core, magnetic guide nozzle and copper pipe are placed among ceramic protection cover, namely insulate, heat insulation again;
4, big current, low number of turn magnetic head can be used in hot environment by this device, produce high-intensity magnetic field, overcome the shortcoming of magnetic head in the past, have good versatility.
Projected economic effect:
Known by retrieving, the single-wire submerged arc surfacing welding electromagnetic stirring magnetic head that we develop has the difference of essence in principle and structure and prior art.
And our this single-wire submerged arc surfacing welding electromagnetic stirring magnetic head newly developed, the project organization of its uniqueness and the type of cooling are applicable to using in any environment, and respond well.
It is predicted, all kinds of rollers that annual national Ge great steel mill scraps are worth and reach 18,000,000,000 yuan, and wherein the roller of nearly half can be repaired, recycle, and the market of annual regeneration roller reaches 30 ~ 4,000,000,000 yuan.
Roll is one of three large expendable parts of metallurgy industry, and the current annual consumption of China is more than 800,000 tons, and wherein considerable part can adopt bead-welding technology reparation.This design can improve welding quality greatly, is extended to large-scale roller and repairs field, reduce repair rate simultaneously, enhance productivity.
If the reparation of regeneration roller adopts this electromagnetic stirring equipment and process, calculate by occupation rate of market 5%, direct or indirect economic benefit more than 1.5 hundred million yuan will be produced every year.
Accompanying drawing explanation
The present invention has two width accompanying drawings, wherein:
Fig. 1 is single-wire submerged arc surfacing welding electromagnetic stirring magnetic head structural representation;
Fig. 2 is submerged arc overlay welding electromagnetic agitation Welder mapping.
In figure: 1, threeway 2, welding gun 3, magnetic core 4, magnetic core ceramic protection cover 5, magnetic guide nozzle 6, flux delivery pipe 7, magnetic guide nozzle 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.
Detailed description of the invention
Specific embodiments of the invention as shown in drawings; single-wire submerged arc surfacing welding electromagnetic stirring magnetic head shown in accompanying drawing 1; be made up of threeway 1, welding gun 2, magnetic core 3, magnetic core ceramic protection cover 4, magnetic guide nozzle 5, flux delivery pipe 6, magnetic guide nozzle protective cover 7 and hollow copper solenoid 8; it is inner that described threeway 1 is positioned at magnetic core 3; welding gun 2 and flux delivery pipe 6 are arranged in threeway 1, and magnetic core ceramic protection cover 4 and hollow copper solenoid 8 are equipped with in magnetic core 3 outside.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 by flexible pipe.Magnetic guide nozzle 5 is equipped with in magnetic core 3 bottom, and magnetic core 3 and magnetic guide nozzle 5 are welded together by high magnetic permeability ferromagnetic material.Magnetic guide nozzle protective cover 7 is housed outside magnetic guide nozzle 5.Described magnetic guide nozzle protective cover 7 and magnetic core ceramic protection cover 4 are made up of the non-magnetic ceramic material of insulated heat.Described threeway 1 is made up of non-magnet_conductible material.
Attachedly Figure 2 shows that submerged arc overlay welding electromagnetic agitation Welder of the present invention maps, the two ends of the hollow copper solenoid 8 on described electromagnetic stirring magnetic head 9 are connected respectively to delivery port 12 and the water return outlet 13 of cooling water tank 11.And the output port 15 of magnetic control roll submerged arc overlay welding machine 10 is connected to by lead-out wire.After magnetic control roll submerged arc overlay welding machine 10 and cooling water tank 11 switch on power, press starting switch 14, can start working.
Claims (4)
1. a single-wire submerged arc surfacing welding electromagnetic stirring magnetic head, be made up of threeway (1), welding gun (2), magnetic core (3), field winding coil and flux delivery pipe (6), it is inner that described threeway (1) is positioned at magnetic core (3), welding gun (2) and flux delivery pipe (6) are arranged in threeway (1), and field winding coil is equipped with in magnetic core (3) outside; It is characterized in that the field winding coil be 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) by flexible pipe; Magnetic guide nozzle (5) is equipped with in magnetic core (3) bottom, and magnetic core (3) and magnetic guide nozzle (5) are welded together by high magnetic permeability ferromagnetic material; Magnetic guide nozzle protective cover (7) is equipped with in magnetic guide nozzle (5) outside.
2. single-wire submerged arc surfacing welding electromagnetic stirring magnetic head according to claim 1, is characterized in that described magnetic guide nozzle protective cover (7) and magnetic core ceramic protection cover (4) are made up of the non-magnetic ceramic material of insulated heat.
3. single-wire submerged arc surfacing welding electromagnetic stirring magnetic head according to claim 1, is characterized in that described threeway (1) is made up of non-magnet_conductible material.
4. single-wire submerged arc surfacing welding electromagnetic stirring magnetic head according to claim 1, is characterized in that described field winding coil is that hollow copper solenoid (8) is made, 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 CN102513649A (en) | 2012-06-27 |
| CN102513649B true CN102513649B (en) | 2015-03-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
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- 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 |
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| CN102513649A (en) | 2012-06-27 |
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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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