CN101456096A - Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda - Google Patents
Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda Download PDFInfo
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- CN101456096A CN101456096A CNA2007101720067A CN200710172006A CN101456096A CN 101456096 A CN101456096 A CN 101456096A CN A2007101720067 A CNA2007101720067 A CN A2007101720067A CN 200710172006 A CN200710172006 A CN 200710172006A CN 101456096 A CN101456096 A CN 101456096A
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Abstract
The invention relates to the field of soldering, in particular to a soldering process using end rings and guide bars of a motor rotor of low silver soldering materials. The soldering process comprises: coating a soldering agent in an end ring groove, and coating the soldering agent on the guide bar soldering surface of the rotor. The process also comprises the following steps: presetting the soldering materials, wherein the soldering agent is put after the soldering materials BAg40CuZnSnNi are uniformly preset between the guide bars of the rotor; soldering, wherein the rotor is heated continuously, in the heating process, the temperature change of workpieces needs to be controlled, the temperature can not be too high, and the soldering temperature needs to be controlled between 640 and 740 DEG C; and cooling, wherein the rotor is cooled naturally after soldering, the rotor is turned around when the temperature is reduced to about 150 DEG C and the soldering position is changed to solder the other end, and the steps are repeated. Due to the adoption of the technical proposal, the process has the advantages of reducing the soldering temperature, saving energy, effectively reducing production cost and improving economic benefit, thereby protecting certain special structures which need lower soldering temperature.
Description
Technical field
The present invention relates to the soldering field, relate in particular to the end ring of the rotor of using low-silver solder and the soldering processes of sliver.
Background technology
In the flow process of the various motor products of producing at present, soldering has accounted for certain weight proportion, and wherein a large amount of structures such as the cage rotor of motor, end ring and stator lead all adopt soldering processes.And because of the motor output improves year by year, the demand of solder also is a cumulative year after year.In the solder that routine is used, based on BAg45CuZn (material 303), HYAg45Sn (material 325), BCu80PAg (material 204) and BCu89PAg (material 205), the solder amount of particularly expect 303, material 325 these two kinds of silver solder alloy being used in present soldering processes is very high, is in great demand.But because their silver contents are higher, be 45%, expensive.Their brazing temperature is higher simultaneously, but will protect insulating materials need use lower brazing temperature in some special construction.
Summary of the invention
The object of the present invention is to provide a kind of a kind of soldering processes that can overcome above-mentioned defective workmanship, solderer's artistic skill of the present invention reduces production costs, and increases economic efficiency, and can protect some special construction that needs low temperature brazing simultaneously.
Realize that the object of the invention technical scheme is: a kind of end ring and the soldering processes of sliver of using the rotor of low-silver solder, be included in coating brazing flux in the end ring groove, on the sliver faying face of rotor, apply brazing flux, it is characterized in that, also comprise the steps:
One, preseting solder: evenly putting brazing flux again behind the preseting solder BAg40CuZnSnNi between the rotor bar;
Two, soldering: notice in the heating process that the control workpiece temperature changes, temperature can not be too high, and brazing temperature should be controlled within 640-740 ℃;
Three, cooling: rotor cools off naturally after the soldering, when reducing to 150 ℃ of left and right sides rotor is reversed end for end, and changes the soldering position, and the weldering other end repeats above-mentioned steps.
The amount of preseting solder is can fill up end ring groove or solder fusing back after the solder fusing to be half of end ring groove depth in the preseting solder step of described step 1.
Further, the end ring of the rotor of above-mentioned application low-silver solder and the soldering processes of sliver also comprise preheating step, and this step evenly is preheating to 300-350 ℃ for the end with end ring and sliver;
Further, sliver and end ring should reach brazing temperature simultaneously in the soldering step of described step 2.
Further, the brazing area intersection should be overlapped in the soldering step of described step 2, produces distortion in order to avoid repeatedly repeat heating.
Further, the soldering step of described step 2 is divided into eight equal portions with the whole circumference of end ring, adopts the symmetrical chiasma welding.
Alternatively, adopt the segmentation welding in the soldering step of described step 2: connect intermediate frequency power supply and begin heating, guarantee that sliver and end ring reach brazing temperature simultaneously, when end ring begins rubescent, when temperature reaches 580 ℃-610 ℃ near the soldered fitting, with the auxiliary heating of brazing torch sliver, brazing torch moves around, and makes it even heating.
Further, described when reaching brazing temperature solder melt gradually, around end ring and sliver, slowly form the weld seam of " R " shape, with metal bar solder is dragged in the groove of end ring pond, after solder melts fully, and the brazed seam outer has formed slick and sly fillet, can cut off intermediate frequency power supply this moment, reduce to regulate bolt and unclamp induction coil, wait solder to solidify after, rotate counterclockwise rotor to next section weld seam.
Owing to adopted above-mentioned technical solution, reduced the temperature of soldering, saved the energy, reduced production cost effectively, improved economic benefit.Can protect some special construction that needs to use lower brazing temperature.
Description of drawings
The whole circumference that figure one uses for the present invention in the soldering processes of the end ring of rotor of low-silver solder and sliver end ring is divided into eight equal portions, adopts symmetrical chiasma welding schematic diagram.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment.
A kind of end ring of the rotor of using low-silver solder and the soldering processes of sliver are included in and apply brazing flux in the end ring groove, apply brazing flux on the sliver faying face of rotor, also comprise the steps:
One, preseting solder: evenly putting brazing flux again behind the preseting solder BAg40CuZnSnNi between the rotor bar;
Two, soldering: notice in the heating process that the control workpiece temperature changes, temperature can not be too high, and brazing temperature should be controlled within 640-740 ℃;
Three, cooling: rotor cools off naturally after the soldering, when reducing to 150 ℃ of left and right sides rotor is reversed end for end, and changes the soldering position, and the weldering other end repeats above-mentioned steps.
The amount of preseting solder is can fill up end ring groove or solder fusing back after the solder fusing to be half of end ring groove depth in the preseting solder step of above-mentioned steps one.Sliver and end ring should reach brazing temperature simultaneously in the soldering step of above-mentioned steps two.The soldering step of above-mentioned steps two is divided into eight equal portions with the whole circumference of end ring, adopts the symmetrical chiasma welding.The brazing area intersection should be overlapped in the soldering step of above-mentioned steps two, produces distortion in order to avoid repeatedly repeat heating.
Embodiment 1
The end ring of the rotor of the application low-silver solder of employing gas brazing and the soldering processes of sliver
(1) technological preparation:
1 at the about 50mm in rotor bar two ends with the polishing of wire brush or rubber, remove oxide.Notice that there is the T2 copper coating at two ends when the rotor bar material is aluminium bronze.
2 usefulness acetone or cleaning agent KC-E101 clean the greasy dirt on sliver, end ring, the solder, and dry.
3 at the contour cushion block of the aboveground placement of hot jacket, proofreaies and correct the horizontal plane of well location with horizon rule, puts rotor in advance, when not enough, can increase the cushion block number, to reach degree of depth requirement as the hot jacket well depth.
4 work as end ring 10 diameters surpasses 1000mm, when thickness surpasses 50mm, brazing torch is changed into special big brazing torch heat, and is heated bending for preventing axle, overlaps protective cover before the soldering heating on axle.
Conscientious checkout facility, instrument, utensil meet safety requirements before 5 operations.
(2) technical process
1 is shelved on end ring 10 on the jack, and makes jack all be supported on the end ring middle part, with the horizon rule positive end ring horizontal plane of resuming classes.In the end ring groove, apply enough pasty state brazing fluxes.
2 sling rotor carries directly, makes rotor bar aim at the end ring groove, slowly puts down.Check and adjustment, make sliver and end ring groove no-float, and the perpendicularity of calibration rotor.Apply the pasty state brazing flux on the sliver faying face.
3 between rotor bar preseting solder, put brazing flux on the solder again.The solder use amount is pressed the pattern regulation: solder fusing back is half of end ring groove depth, and is uniform.
4 usefulness oxygen-acetylene torch heating, the end with end ring and sliver on whole circumference evenly is preheating to 300-350 ℃.Preheating is wanted evenly, prevents the end ring distortion, situations such as sliver bending.
5 are divided into 8 equal portions with the end ring whole circumference, adopt the symmetrical chiasma welding.Welding sequence is shown in the order of 1,2,3,4,5,6,7,8 numerals among Fig. 1.Heating is wanted evenly, and sliver and end ring should reach brazing temperature simultaneously.Solder melts gradually when reaching brazing temperature, slowly forms the weld seam of " R " shape around end ring and sliver.Another section weld seam that adds thermal tracking again, and repeat above-mentioned steps and finish up to the whole welding of sliver.Every section weld seam is answered a through welding and weld, produces distortion in order to avoid repeatedly repeat heating, and the brazing area intersection should be overlapped, and Fig. 1 black part branch is represented overlapping.Under the prerequisite that guarantees evenly heating and complete penetration, shorten heat time heating time as far as possible.Attention: unavailable brazing torch directly heats solder.
Notice in 6 heating processes that the control workpiece temperature changes, temperature can not be too high.Brazing temperature should be controlled within 640-740 ℃ of scopes, measures temperature with the far infrared temperature measurer.
7 postwelding rotors cool off naturally, when reducing to 150 ℃ of left and right sides rotor are reversed end for end.The weldering other end, method is with 1-6 of technical process.
The end ring of the rotor of the application low-silver solder of employing induction brazing segmentation welding and the soldering processes of sliver
(1) technological preparation
Whether 1 starts medium frequency welding machine check unit turns round normal.
2 according to the induction coil that the diameter of end ring is selected for use or new system is suitable, and water flowing checks whether cooling water is unimpeded.
3 at the about 50mm in rotor bar two ends with the polishing of wire brush or rubber, remove oxide.Notice that there is the T2 copper coating at two ends when the rotor bar material is aluminium bronze.
4 usefulness acetone or cleaning agent KC-E101 clean the greasy dirt on sliver, end ring, the solder, and dry.
Conscientious checkout facility, instrument, utensil meet safety requirements before 5 operations.
(2) technical process
1 lies in end ring on the rotor shelf, applies enough pasty state brazing fluxes in the end ring groove.
2 select for use suitable suspender with vertical the hanging in of rotor, and sliver cooperates with the end ring groove should be good, calibrates the perpendicularity of rotor simultaneously.Apply the pasty state brazing flux on the sliver faying face.
3 between rotor bar preseting solder, uniform, put brazing flux on the solder again.The solder use amount is pressed the pattern regulation: YCH, YGF serial motors, should be able to fill up the end ring groove after the solder fusing; All the other product solder fusing backs are half of end ring groove depth.
Put mica sheet on 4 induction coils, raise and regulate bolt, make between induction coil and the end ring to keep certain interval about 1mm.
5 adopt the segmentation welding.Connect intermediate frequency power supply and begin heating.When big the or sliver thickness of end ring volume is big, help the thermal conductance bar, reach brazing temperature simultaneously with assurance sliver and end ring with oxygen-acetylene torch part.When end ring begin rubescent, when temperature reaches 580 ℃-610 ℃ near the soldered fitting, with one the auxiliary sliver that heats of brazing torch.Can use two brazing torches in case of necessity, the auxiliary heating of another brazing torch end ring.Brazing torch should move around, and makes it even heating.Attention: unavailable flame directly heats solder.
6 solders when reaching brazing temperature melt gradually, slowly form the weld seam of " R " shape around end ring and sliver, and the available metal rod is dragged on solder in the groove of end ring pond when needing.After solder melts fully, and the brazed seam outer formed slick and sly fillet, and can cut off intermediate frequency power supply this moment, reduces to regulate bolt and unclamp induction coil.After solder solidifies, rotate counterclockwise rotor to next section weld seam, repeat again above-mentioned steps up to sliver all welding finish.Attention: every section weld seam is answered a through welding and has been welded, in order to avoid repeatedly repeat to add the heat affecting brazing quality.The intersection of adjacent two sections weld seams should be overlapped.
Notice in 7 heating processes that the control workpiece temperature changes, temperature can not be too high, adjusts heating power at any time.Brazing temperature should be controlled within 640-740 ℃ of scopes, measures temperature with the far infrared temperature measurer.
8 postwelding rotors cool off naturally, when reducing to 150 ℃ of left and right sides rotor are reversed end for end.The weldering other end, method is with 1-7.
Use the effect of technology of the present invention:
1, only uses the expense that low-silver solder BAg40CuZnSnNi saves in the soldering processes instead
Replace for the end of the year 2004 material 325 to use in the pond of the y series motor rotor of middle size motor subsidiary factory slot type end ring and sliver intermediate-frequency braze welding structure, trial state is good.Rise in September, 2005 and in the pond of the y series motor rotor of large-size machine subsidiary factory, high-speed electric expreess locomotive subsidiary factory slot type end ring and sliver intermediate-frequency braze welding structure, replace material 325 to promote the use of.Producible thus saving please see Table one.
Table one: only use the expense that low-silver solder BAg40CuZnSnNi saves in the soldering processes instead
| Time | 40% silver solder BAg40CuZnSnNi use amount (kg) | 40% silver solder unit price (unit/kg) | 45% silver solder unit price (unit/kg) | Savings (ten thousand yuan) |
| The whole year in 2006 | 13200.2 | 1450 | 1600 | 198 |
| 2007 so far | 2746.8 | 1550 | 1700 | 41.2 |
2, improve the expense that the solder use amount is saved in the technology
In this braze-welded structure, former end ring groove depth 10mm is all by filling up after the solder fusing.Now by improving technology, control procedure is courageously improved, and in large-scale, middle size motor subsidiary factory the end ring groove is filled out the solder degree of depth and changes 5mm into, make the corresponding minimizing of solder use amount half.Follow through technology more than a year, the close inspection checking of quality guarantee portion, steady quality is now using as maturation process.Consequent saving please see Table two.
Table two: the expense of saving
| Time period | 40% silver solder use amount (kg) | Can saving amount (kg) | Unit price (unit/kg) | Savings (ten thousand yuan) |
| The whole year in 2006 | 9912.4 | 9912.4 | 1450 | 1437.3 |
| 2007 so far | 1908.7 | 1908.7 | 1550 | 295.8 |
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (8)
1, a kind of end ring of the rotor of using low-silver solder and the soldering processes of sliver are included in and apply brazing flux in the end ring groove, apply brazing flux on the sliver faying face of rotor, it is characterized in that, also comprise the steps:
One, preseting solder: evenly putting brazing flux again behind the preseting solder BAg40CuZnSnNi between the rotor bar;
Two, soldering: notice in the heating process that the control workpiece temperature changes, temperature can not be too high, and brazing temperature should be controlled within 640-740 ℃;
Three, cooling: rotor cools off naturally after the soldering, when reducing to 150 ℃ of left and right sides rotor is reversed end for end, and changes the soldering position, and the weldering other end repeats above-mentioned steps.
2, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 1 and sliver, it is characterized in that the amount of preseting solder is can fill up end ring groove or solder fusing back after the solder fusing to be half of end ring groove depth in the preseting solder step of described step 1.
3, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 1 and sliver is characterized in that, also comprise preheating step, and this step evenly is preheating to 300-350 ℃ for the end with end ring and sliver;
4, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 2 and sliver is characterized in that, sliver and end ring should reach brazing temperature simultaneously in the soldering step of described step 2.
5, according to the end ring of the rotor of each described application low-silver solder of claim 1-4 and the soldering processes of sliver, it is characterized in that, the brazing area intersection should be overlapped in the soldering step of described step 2, produces distortion in order to avoid repeatedly repeat heating.
6, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 1 and sliver is characterized in that, the soldering step of described step 2 is divided into eight equal portions with the whole circumference of end ring, adopt the symmetrical chiasma welding.
7, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 1 and sliver, it is characterized in that, adopt the segmentation welding in the soldering step of described step 2: connect intermediate frequency power supply and begin heating, guarantee that sliver and end ring reach brazing temperature simultaneously, when end ring begin rubescent, when temperature reaches 580 ℃-610 ℃ near the soldered fitting, with the auxiliary heating of brazing torch sliver, brazing torch moves around, and makes it even heating.
8, the soldering processes of the end ring of the rotor of application low-silver solder according to claim 7 and sliver, it is characterized in that, described when reaching brazing temperature solder melt gradually, around end ring and sliver, slowly form the weld seam of " R " shape, with metal bar solder is dragged in the groove of end ring pond, after solder melts fully, and the brazed seam outer has formed slick and sly fillet, can cut off intermediate frequency power supply this moment, reduce the adjusting bolt and unclamp induction coil, after solder solidifies, rotate counterclockwise rotor to next section weld seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101720067A CN101456096A (en) | 2007-12-10 | 2007-12-10 | Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101720067A CN101456096A (en) | 2007-12-10 | 2007-12-10 | Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda |
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| CN101456096A true CN101456096A (en) | 2009-06-17 |
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| CNA2007101720067A Pending CN101456096A (en) | 2007-12-10 | 2007-12-10 | Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102255410A (en) * | 2010-05-19 | 2011-11-23 | 抚顺煤矿电机制造有限责任公司 | Welding structure and welding method for motor rotor bar and rotor end ring |
| CN102922074A (en) * | 2012-11-26 | 2013-02-13 | 湘潭电机股份有限公司 | Vacuum welding method of motor rotor |
| CN102974941A (en) * | 2012-12-06 | 2013-03-20 | 贵州华阳电工有限公司 | Method for welding in segments |
| CN103722266A (en) * | 2013-12-31 | 2014-04-16 | 南车成都机车车辆有限公司 | Rotor welding technology |
| CN104249203A (en) * | 2013-06-26 | 2014-12-31 | 上海电气集团上海电机厂有限公司 | Motor rotor end ring and guide bar brazing method |
| CN104289782A (en) * | 2014-08-26 | 2015-01-21 | 无锡柯马机械有限公司 | Rotor welding process |
| CN104625281A (en) * | 2014-12-15 | 2015-05-20 | 哈尔滨电气动力装备有限公司 | Welding method for rotor copper end ring of shielded motor and copper strip splice |
| CN104985338A (en) * | 2015-06-30 | 2015-10-21 | 柳州金茂机械有限公司 | Rotor welding technology |
| CN105798414A (en) * | 2014-12-31 | 2016-07-27 | 上海电气集团上海电机厂有限公司 | Method for brazing gear-shaped end ring and rotor bar |
| CN112792423A (en) * | 2021-04-07 | 2021-05-14 | 陕西斯瑞新材料股份有限公司 | Method for preparing CT bulb tube rotor copper sleeve by combining vacuum diffusion welding with vacuum brazing |
| CN115302035A (en) * | 2022-09-14 | 2022-11-08 | 重庆水轮机厂有限责任公司 | Welding process of rotor end ring of asynchronous motor |
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2007
- 2007-12-10 CN CNA2007101720067A patent/CN101456096A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102255410A (en) * | 2010-05-19 | 2011-11-23 | 抚顺煤矿电机制造有限责任公司 | Welding structure and welding method for motor rotor bar and rotor end ring |
| CN102922074A (en) * | 2012-11-26 | 2013-02-13 | 湘潭电机股份有限公司 | Vacuum welding method of motor rotor |
| CN102922074B (en) * | 2012-11-26 | 2015-01-07 | 湘潭电机股份有限公司 | Vacuum welding method of motor rotor |
| CN102974941A (en) * | 2012-12-06 | 2013-03-20 | 贵州华阳电工有限公司 | Method for welding in segments |
| CN104249203A (en) * | 2013-06-26 | 2014-12-31 | 上海电气集团上海电机厂有限公司 | Motor rotor end ring and guide bar brazing method |
| CN104249203B (en) * | 2013-06-26 | 2016-08-24 | 上海电气集团上海电机厂有限公司 | The end ring of rotor and sliver method for welding |
| CN103722266B (en) * | 2013-12-31 | 2015-10-14 | 南车成都机车车辆有限公司 | A kind of rotor welding technique |
| CN103722266A (en) * | 2013-12-31 | 2014-04-16 | 南车成都机车车辆有限公司 | Rotor welding technology |
| CN104289782A (en) * | 2014-08-26 | 2015-01-21 | 无锡柯马机械有限公司 | Rotor welding process |
| CN104625281A (en) * | 2014-12-15 | 2015-05-20 | 哈尔滨电气动力装备有限公司 | Welding method for rotor copper end ring of shielded motor and copper strip splice |
| CN105798414A (en) * | 2014-12-31 | 2016-07-27 | 上海电气集团上海电机厂有限公司 | Method for brazing gear-shaped end ring and rotor bar |
| CN105798414B (en) * | 2014-12-31 | 2019-04-02 | 上海电气集团上海电机厂有限公司 | A kind of gear shape end ring and rotor bar method for welding |
| CN104985338A (en) * | 2015-06-30 | 2015-10-21 | 柳州金茂机械有限公司 | Rotor welding technology |
| CN112792423A (en) * | 2021-04-07 | 2021-05-14 | 陕西斯瑞新材料股份有限公司 | Method for preparing CT bulb tube rotor copper sleeve by combining vacuum diffusion welding with vacuum brazing |
| CN115302035A (en) * | 2022-09-14 | 2022-11-08 | 重庆水轮机厂有限责任公司 | Welding process of rotor end ring of asynchronous motor |
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Application publication date: 20090617 |