CN105798414B - A kind of gear shape end ring and rotor bar method for welding - Google Patents
A kind of gear shape end ring and rotor bar method for welding Download PDFInfo
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- CN105798414B CN105798414B CN201410851610.2A CN201410851610A CN105798414B CN 105798414 B CN105798414 B CN 105798414B CN 201410851610 A CN201410851610 A CN 201410851610A CN 105798414 B CN105798414 B CN 105798414B
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- end ring
- welding
- brazing
- conducting bar
- rotor
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Abstract
The present invention discloses a kind of gear shape end ring and rotor bar method for welding, when conducting bar and caulking groove are brazed, first preset sheet solder, then preheat end ring and conducting bar, pre- thermal-flame with two welding torches and should concentrate on end ring end face outside；When the soldering, also being dipped powdery brazing flux using silver solder and be placed on above the conducting bar for being heated to brazing temperature makes its melting, and brazing area is flowed into naturally from one side, until being overflowed from conducting bar another side and so that brazing filler metal melts is filled up joint gap and form smooth soldering fillet along brazed seam；When the soldering, brazing area is heated with two welding torches, and brazing temperature should control within the scope of 745 DEG C -845 DEG C.Method for welding of the invention has the advantages that one-time detection percent of pass is high.
Description
Technical field
The invention belongs to field of motor manufacturing, be related to rotor manufacture more particularly to a kind of gear shape end ring with turn
Sub- conducting bar method for welding.
Background technique
18S serial motors are a kind of steel rolling variable-frequency motors for being mainly used for steel industry, and gear shape end ring is led with rotor
Item is using soldering, and in order to ensure brazing quality, postwelding must make dyeing inspection to brazed seam.Since end ring material is using more special
One-ton brass (chemical component Cu:61-63%, Sn:0.7-1.1%, Pb≤0.1%, Fe≤0.1%, Ni≤0.5%, Zn surplus),
And brazing filler metal area is big, it is primary lower by the qualification rate checked, it is often necessary to repair welding.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of gear shape end ring and rotor that one-time detection qualified rate is high
Conducting bar method for welding, to overcome the shortcomings of the prior art.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:
A kind of gear shape end ring and rotor bar method for welding, the gear shape end ring material are one-ton brass, ingredient: Cu:
61-63%, Sn:0.7-1.1%, Pb≤0.1%, Fe≤0.1%, Ni≤0.5%, Zn surplus；The rotor bar soldering exists
In each caulking groove of the gear shape end ring, which is characterized in that the step of method for welding have preparation, brazing process, after
Phase cleaning；
The step of preparation includes has:
S101, it is cleaned and is dried with solder piece of the acetone to sheet；Rotor bar both ends are polished with descaling；With
Acetone cleans end ring groove portion and conducting bar both ends；
S102, rotor is placed on idler wheel shelf, calibration of axes is horizontal；
The step of brazing process includes has:
S201, prepackage end ring, check and adjust, making conducting bar and two side clearance of end ring caulking groove is respectively 0.2mm, conducting bar and end
The gap of ring caulking groove bottom is 0.3mm, guarantees that conducting bar and end ring caulking groove two sides and bottom can at least fill in a piece of solder piece；
S202, solder on piece is coated into paste brazing flux, conducting bar two sides and bottom is inserted into, until filling up gap；
S203, oxygen-acetylene flame brazing: first tack welding is carried out, then sequence is welded；
The tack welding is that end ring wholecircle is divided into the equal many places welding position of spacing, and every place's welding position includes 5 conducting bars；Weldering
The order of position welding is first symmetrical, rear sequence, alternately；
The sequence weldering is that will successively be brazed remaining conducting bar with caulking groove in sequence；
When conducting bar and caulking groove are brazed, first it should first be concentrated on outside end ring with two welding torch preheating end ring and conducting bar, pre- thermal-flame
Side end face；When the soldering, also being dipped powdery brazing flux using silver solder and be placed on above the conducting bar for being heated to brazing temperature makes it
Melting, and brazing area is flowed into naturally from one side, until overflowing from conducting bar another side and brazing filler metal melts is made to fill up joint gap and edge
Brazed seam forms smooth soldering fillet；When the soldering, brazing area is heated with two welding torches, brazing temperature should control 745 DEG C-
Within the scope of 845 DEG C；When preheating and heating, brazing flame should be concentrated, so that solder sufficiently flows.
The step of later period cleaning includes has:
S301, rotor handling to cleaning place, be shelved on corresponding idler wheel shelf；Rotor is rotated, with hot water or steaming
Gas constantly washes away, while being scrubbed with wire brush, until brazing flux residue is removed clean；
S302, polishing end ring end face, remove the overlap of protrusion.
In a preferred embodiment of the invention, the trade mark of the solder piece is BAg45CuZn, the trade mark of the silver solder
For BAg45CuZn.
Before the soldering heating, shield is covered on armature spindle.
It is lined between the end ring and rotor pressing ring and soaks ceramic fibre strip.
By adopting the above technical scheme, the assembling structure brazing quality of the end ring and conducting bar that are brazed with method of the invention is high,
Have the advantages that one-time detection percent of pass is high.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the assembling structure schematic diagram of end ring and conducting bar；
Fig. 2 is the welding position sequential schematic of the first tack welding；
Fig. 3 is the welding position sequential schematic of second of tack welding.
Specific embodiment
As shown in Figure 1, end ring 100 is gear shape, conducting bar 200 is brazed in each caulking groove 101 of end ring 100, wherein tooth
Wheel shape end ring material be one-ton brass, ingredient: Cu:61-63%, Sn:0.7-1.1%, Pb≤0.1%, Fe≤0.1%, Ni≤
0.5%, Zn surplus.
Method for welding of the invention is as follows in detail:
One, preparation
Sheet solder piece 1. (trade mark: BAg45CuZn) blanking, length is 1-2mm smaller than the thickness of end ring, then uses acetone
Clean simultaneously airing.
2. rotor bar both ends polish descaling, then with acetone cleans end ring groove portion (end ring groove portion first uses wire brush
It is swiped through) and conducting bar both ends.
3. putting rotor on idler wheel shelf, calibration of axes is horizontal.
4. because being heated with welding torch, to prevent axis to be heated to bending, shield should be covered on axis before soldering heating.
Two, brazing process
1, end ring is pre-installed, checks and adjusts, makes conducting bar and end ring two sides and the gap of slot bottom is respectively 0.2mm and 0.3mm,
To guarantee that conducting bar and end ring two sides and bottom can at least fill in a piece of solder piece, if being not achieved, need to repair file end ring flute profile.
2, it is inserted into right quantity sheet solder piece according to the actual situation until filling up gap in conducting bar two sides and bottom, pricker
Before tablet insertion end annular groove mouth, paste brazing flux is first coated.
3, pad soaks ceramic fibre strip barrier between pressing ring and end ring, pays attention to the verticality of end ring and axis.In addition, iron core
Outer fenestra winding soaks ceramic fibre to prevent flame from damaging.
4, oxygen-acetylene flame brazing: first tack welding, rear sequence are welded.
4.1, tack welding.
4.1.1, tack welding is that end ring wholecircle is divided into the equal many places welding position of spacing, and the order of welding position welding is first right
Title, rear sequentially, alternately that is, using iron core key position as starting point, wholecircle divides 4 equal parts, successively welds welding position as shown in Figure 2 1. 2.
4. 3. every place's tack welding conducting bar number is 5.When end ring outer circle is greater than 2000mm, 6 equal parts of wholecircle point are successively welded as shown in Figure 3
1. 2. 3. 4. 5. 6., every place's tack welding conducting bar number is still 5 to welding position.
4.1.2, end ring end face outside should first be concentrated on two welding torch preheating end ring and conducting bar, pre- thermal-flame.Preheating and
When heating, brazing flame should be concentrated, so that solder sufficiently flows.
When soldering, silver solder (trade mark: BAg45CuZn), which dips powdery brazing flux, should be placed on the conducting bar for being heated to brazing temperature
Top makes its melting, and flows into brazing area naturally from one side, terminates from conducting bar another side spilling side, brazing filler metal melts fill up between brazed seam
Gap simultaneously forms smooth soldering fillet along brazed seam.The solder that solder cannot be melted or be melted directly under flame cannot be from aerial
Instill brazing area.The pricker tumor application brazing torch for hanging over end ring surface, which is melted, puts down.
4.1.3, when being brazed, welding torch is heated using 2 in brazing area, keeps brazing temperature.Brazing temperature should be controlled 745
Within the scope of DEG C -845 DEG C.
4.2, sequence is welded.
Be brazed from core key, weld remaining caulking groove and conducting bar in the direction of the clock, welding procedure according to
4.1.2,4.1.3.When being soldered to the conducting bar of tack welding, brazed seam is visually inspected, if defective repair welding immediately.
5. in welding process or not allowing to hit conducting bar before cooling.
6. the later period clears up
6.1 rotor handlings are shelved on corresponding idler wheel shelf to cleaning place.Rotate rotor, with hot water (or steam
Gas) constantly wash away, while being scrubbed with wire brush, until brazing flux residue is removed clean.
6.2 polishing end ring end faces, remove the overlap of protrusion.
Be brazed using end ring of the above-mentioned method for welding to 97 rotors with conducting bar, by dye penetrant inspection method into
Examination qualification rate 100% is once sent in row detection.
As it can be seen that the assembling structure brazing quality height for the end ring and conducting bar being brazed with method of the invention, has one-time detection
The high advantage of percent of pass.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, Ren Hesuo
Belong in technical field and have usually intellectual, if being utilized not departing from scope of protection of the claims proposed by the invention
Part made by disclosed technology contents is changed or the equivalent embodiment of modification, and without departing from skill of the invention
Art feature, in the range of still belonging to the technology of the present invention feature.
Claims (4)
1. a kind of gear shape end ring and rotor bar method for welding, the gear shape end ring material is one-ton brass, ingredient: Cu:61-
63%, Sn:0.7-1.1%, Pb≤0.1%, Fe≤0.1%, N i≤0.5%, Zn surplus；The rotor bar soldering is in institute
It states in each caulking groove of gear shape end ring, which is characterized in that there are preparation, brazing process, later period in the step of method for welding
Cleaning；
The step of preparation includes has:
S101, it is cleaned and is dried with solder piece of the acetone to sheet；Rotor bar both ends are polished with descaling；Use acetone
Clean end ring groove portion and conducting bar both ends；
S102, rotor is placed on idler wheel shelf, calibration of axes is horizontal；
The step of brazing process includes has:
S201, prepackage end ring, check and adjust, conducting bar is made with two side clearance of end ring caulking groove to be respectively that 0.2mm, conducting bar and end ring are embedding
The gap of trench bottom is 0.3mm, guarantees that conducting bar and end ring caulking groove two sides and bottom can at least fill in a piece of solder piece；
S202, solder on piece is coated into paste brazing flux, conducting bar two sides and bottom is inserted into, until filling up gap；
S203, oxygen-acetylene flame brazing: first tack welding is carried out, then sequence is welded；
The tack welding is that end ring wholecircle is divided into the equal many places welding position of spacing, and every place's welding position includes 5 conducting bars；It is described fixed
In the weldering of position, the order of welding position welding is first symmetrical, rear sequence, alternately；
The sequence weldering is in sequence to be brazed remaining conducting bar after the tack welding with caulking groove；
When conducting bar and caulking groove are brazed, end ring end face outside first should be concentrated on two welding torch preheating end ring and conducting bar, pre- thermal-flame；
When the soldering, also being dipped powdery brazing flux using silver solder and be placed on above the conducting bar for being heated to brazing temperature makes its melting, and
Brazing area is flowed into naturally from one side, until overflowing from conducting bar another side and brazing filler metal melts is made to fill up joint gap and be formed along brazed seam
Smooth soldering fillet；When the soldering, brazing area is heated with two welding torches, and brazing temperature should be controlled in 745 DEG C of -845 DEG C of models
Within enclosing；When preheating and heating, brazing flame should be concentrated, so that solder sufficiently flows；
It is lined between the end ring and rotor pressing ring and soaks ceramic fibre strip；Ceramic fibre is soaked in the outer fenestra winding of iron core.
2. gear shape end ring according to claim 1 and rotor bar method for welding, it is characterised in that: the later period cleaning
The step of including has:
S301, rotor handling to cleaning place, be shelved on corresponding idler wheel shelf；Rotor is rotated, not with hot water or steam
It washes away, while being scrubbed with wire brush disconnectedly, until brazing flux residue is removed clean；
S302, polishing end ring end face, remove the overlap of protrusion.
3. gear shape end ring according to claim 1 or 2 and rotor bar method for welding, it is characterised in that: the solder
The trade mark of piece is BAg45CuZn, and the trade mark of the silver solder is BAg45CuZn.
4. gear shape end ring according to claim 1 and rotor bar method for welding, it is characterised in that: the soldering heating
Before, shield is covered on armature spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851610.2A CN105798414B (en) | 2014-12-31 | 2014-12-31 | A kind of gear shape end ring and rotor bar method for welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851610.2A CN105798414B (en) | 2014-12-31 | 2014-12-31 | A kind of gear shape end ring and rotor bar method for welding |
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| Publication Number | Publication Date |
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| CN105798414A CN105798414A (en) | 2016-07-27 |
| CN105798414B true CN105798414B (en) | 2019-04-02 |
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| CN201410851610.2A Active CN105798414B (en) | 2014-12-31 | 2014-12-31 | A kind of gear shape end ring and rotor bar method for welding |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672866A (en) * | 2018-06-07 | 2018-10-19 | 核工业西南物理研究院 | A kind of high-precision method for welding |
| CN109352111A (en) * | 2018-10-16 | 2019-02-19 | 中车株洲电机有限公司 | The welding method and structure of electric machine end ring and conducting bar |
| CN113427158B (en) * | 2021-06-24 | 2022-10-28 | 西安阿尔斯通永济电气设备有限公司 | Rotor brazing process |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100476587B1 (en) * | 1999-10-11 | 2005-03-17 | 현대중공업 주식회사 | Brazing method of Cu bar type induction motor |
| CN101347871A (en) * | 2007-07-17 | 2009-01-21 | 上海电气集团上海电机厂有限公司 | Use of low-silver solder in technique for brazing end ring and guide strip of electric machine rotor |
| CN101456096A (en) * | 2007-12-10 | 2009-06-17 | 上海电气集团上海电机厂有限公司 | Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5040300B2 (en) * | 2006-12-26 | 2012-10-03 | 株式会社豊田自動織機 | Rotating electric machine rotor and rotating electric machine |
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2014
- 2014-12-31 CN CN201410851610.2A patent/CN105798414B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100476587B1 (en) * | 1999-10-11 | 2005-03-17 | 현대중공업 주식회사 | Brazing method of Cu bar type induction motor |
| CN101347871A (en) * | 2007-07-17 | 2009-01-21 | 上海电气集团上海电机厂有限公司 | Use of low-silver solder in technique for brazing end ring and guide strip of electric machine rotor |
| CN101456096A (en) * | 2007-12-10 | 2009-06-17 | 上海电气集团上海电机厂有限公司 | Joint brazing technique of end ring and guide strip of electric machine rotor using low mattisolda |
Non-Patent Citations (2)
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| 钎焊工艺及其在增安型无刷励磁同步电动机中的应用;周建国;《电气防爆》;20040229(第2期);第30-32页 |
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