CN106238845A - Core main pump motor stator coil end socket resistance brazing technology and equipment thereof - Google Patents
Core main pump motor stator coil end socket resistance brazing technology and equipment thereof Download PDFInfo
- Publication number
- CN106238845A CN106238845A CN201610685700.8A CN201610685700A CN106238845A CN 106238845 A CN106238845 A CN 106238845A CN 201610685700 A CN201610685700 A CN 201610685700A CN 106238845 A CN106238845 A CN 106238845A
- Authority
- CN
- China
- Prior art keywords
- end socket
- electrode
- stator coil
- pump motor
- main pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0004—Resistance soldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
Abstract
The technique that the present invention relates to a kind of core main pump motor stator coil end socket resistance brazing, every coil of the stator coil of core main pump motor is all rearranged by the rectangular copper wire of many band paint films, is fused into integrally by scattered copper cash in the range of the certain length of the two of every stator coil ends by the method for resistance brazing.The present invention establishes a kind of resistance brazing technology method for core main pump motor core component stator coil forming process coil both side ends copper cash end socket, by inventing new resistance brazing handpiece structure, suitable brazing process parameter, complete the soldering of core main pump motor stator coil end socket, meet design requirement, this achievement has the highest using value in engineering, and has far-reaching social meaning.
Description
Technical field: the present invention relates to a kind of core main pump motor stator coil end socket resistance brazing technology and equipment thereof.
Background technology: reactor coolant pump is the equipment that nuclear island of nuclear power station is extremely critical.Stator coil is main pump motor
Core component, each stator coil is made up of the copper cash of 20 band paint films, after global formation, need to be by every side, each coil two ends
The method melting welding of about 50mm long region employing soldering is integral, is accustomed to being called envelope to this structural shape of this end turn
Head, its welding referred to as end socket soldering.Follow-up manufacture needs the coil of single molding is passed through copper contiguous block two-by-two at end socket
Being connected, form loop, this new jointing is compared with the conventional connected mode by also headgear, and the soldering to end socket carries
Having gone out higher requirement, the brazing quality of end socket is the basis of follow-up soldering, to above and below and side after end socket soldering from design
The depth of parallelism in face and perpendicularity require particularly severe.Owing to gas brazing needs directly to heat end socket from outside, in weldering
Termination process cannot effectively use Clamp for welding, and medium frequency inductive brazing needs such as the not magnetic conduction such as pottery, engineering plastics and resistance to
The tooling fixture of the special material of high temperature, and make observation limited owing to induction apparatus etc. blocks, it is difficult to ensure that brazing quality, use this
The seal head molding size of two kinds of method for welding solderings and brazing quality cannot meet design requirement.Current existing resistance brazing sets
Standby use clamp type structure clamping workpiece, two electrode plane cannot keeping parallelism, owing to end socket is fine copper wire stepped construction, copper cash exists
Deliquescing after heating, easily causes end socket postwelding to become the top and bottom depth of parallelism overproof because of the unbalanced of electrode pressure, and due to without side
To clamping, easily causing soldering gap between end socket postwelding two row's copper cash excessive, joint brazing quality and compact dimensions also cannot meet
Design requirement.Final for this special structural shape of end socket, we have manufactured and designed a kind of new resistance brazing head, adopt
Realize electrodes by two double-rod cylinder and workpiece is restrained by sides simultaneously, by the adjustment reality to cylinder pressure and stroke
Now when assembling and soldering, workpiece is had reliable chucking power, the end socket shape of red heat state will not be caused bad shadow again simultaneously
Ringing, and by lot of experiments, obtained optimal technological parameter, the stator coil end socket made by this process program is the fullest
Foot design requirement.
Summary of the invention: it is an object of the invention to provide a kind of easy and simple to handle, welding quality is good, effect obvious core main pump motor
Stator coil end socket resistance brazing technology.The technical scheme is that a kind of core main pump motor stator coil end socket resistance pricker
Welding, is characterized in that: every coil of the stator coil of core main pump motor is all by the rectangular copper wire arrangement group of many band paint films
Become, by the method for resistance brazing, scattered copper cash in the range of the certain length of the two of every stator coil ends is fused into
Integrally:
(1) copper cash base material material: copper (trade mark: Tu2), single copper section size: 2.06mm*9.73mm, tolerance+
0.1mm；The lamellar preseting solder trade mark: BCuP-5, specification: 0.254mm*50.8mm*20mm, the bar-shaped filling solder trade mark: BCuP-
5, specification: Ф 1.575mm*900mm；
(2) stator coil end enclosure structure: become two row stackings to form by 20 copper cash；After brake forming, then by coil-end
In the about 50mm length range in portion, soldering is integral；
(3) brazing process parameter: output 10-15KW, discontinuous heats, the holding time: about 2 minutes；Power on extreme pressure
Clamp force: 0.2Mpa, horizontal thrust: 0.2Mpa；
(4) welding procedure:
A) prepare, upper graphite electrode is fallen, by the puller bolt of the cylinder of upper electrode, graphite electrode spacing in adjustment
Lower graphite electrode 20mm, electrode cylinder nut in locking, its position is fixed；Lateral cylinder is opened, adjusts Muscovitum cushion block thick
Degree, makes cushion block tip to face distance head end baffle part distance 19mm；Electrode in rise, is placed into support by the stator coil after molding
On, weld tabs is assembled at the end socket pre-welding of stator coil both sides, places a piece of weld tabs, each joint 9 for every layer；
B) assembling, opens the lateral cylinder of head, end socket is applied lateral thrust, is then turned on electrode cylinder, makes to power on
Extremely end socket is applied downward thrust, end socket is restrained and firmly keeps rectangle, observe and confirm that upper and lower graphite electrode is upper and lower with end socket
Face is fully contacted, and contact area is greater than 60%；
C) welding, is welded by above-mentioned parameter, the situation of being heated according to workpiece and weld tabs fusing feelings in welding process
Condition discontinuous heated parts；Using bar-shaped solder to fill in end socket end and side, weld tabs stops heating, joint after being completely melt
Naturally cool to room temperature；
D) unclamping side-clamping mechanism and upper-lower compacting electrode, after being pulled down by end socket, redundant brazing filler metal is removed in polishing.
It is a further object of the present invention to provide a kind of machining accuracy high, the core main pump motor stator coil resistance being conveniently installed
Brazing equipment, resistance brazing equipment is fixing on the table by base (1), after being put on support by stator coil, first passes through
Head adjusts bolt (11) up and down, head laterally adjusts bolt (13) and adjusts head (2) position, and end socket two is placed on mica block
Baffle plate (7), under on T-shaped graphite electrode (8), open laterally and tightly propped double-rod cylinder (12) by Muscovitum withstanding tight block (9) by end socket side
To stepping up, then it is vertical to end socket applying by upper electrode holder (5) and upper T-shaped graphite electrode (6) to open electrode double-rod cylinder (4)
The pressure in direction, uses this kind of mode, it is ensured that upper T-shaped graphite electrode (6), under T-shaped graphite electrode (8) in assembling and welded
Keeping parallelism in journey, simultaneously vertical with holding between mica block baffle plate (7) and Muscovitum withstanding tight block (9), thereby guarantee that seal head molding shape
Shape；And when assembling by electrode cylinder adjust bolt (3) and the thickness of Muscovitum withstanding tight block (9) can control impaction state
Upper T-shaped graphite electrode (6), under distance between T-shaped graphite electrode (8) and mica block baffle plate (7) and Muscovitum withstanding tight block (9)；
Upper electrode holder (5) has seniority among brothers and sisters hole with auxiliary heat dissipation, simultaneously upper electrode holder (5), lower electrode holder (10) is internal has ring
Shape water channel, is connected with water cooling unit respectively at the source of welding current by water-cooled cable, reduces upper electrode holder by recirculated water cooling during welding
(5) and lower electrode holder (10) and the temperature of cable, it is achieved weld continuously.
The technology of the present invention effect:
A) in this technique, innovation is that using double-rod cylinder to drive under upper electrode presses, simultaneously by increasing lateral double-rod gas
Cylinder, applies the thrust with upper and lower electrode vertical direction in end socket side；The jaw type electrode phase of this scheme and conventional resistive soldering
Ratio, can effectively ensure the two interelectrode depth of parallelisms；And owing to end socket needs soldering 50mm length, use double-rod cylinder to advance relatively
Single pole cylinder can effectively ensure the interelectrode depth of parallelism than more, will not cause cylinder wear and electrode deformation because of unbalance stress.
B) vertical direction of workpiece is restrained by upper/lower electrode with lateral cylinder, the thrust that workpiece is horizontal is combined,
Just can effectively ensure the shape of end socket during assembling, and be not required to extra volume auxiliary fixture, simplify operation.
C) being made up of the copper cash that specification is less due to end socket, in welding process, copper cash is heated deliquescing, often because of outward
Portion's binding force is deformed, and causes postwelding end socket size to diminish or the bending of end socket inboard, and to this problem, we take at upper electrode
Puller bolt is used to fix with head on cylinder, power-on and power-off after can compressing by adjusting the puller bolt regulation of upper electrode cylinder
The spacing of pole, then adjust top piece of Muscovitum after cylinder-pressing and mica block baffle plate by the Muscovitum withstanding tight block of selection suitable thickness
Spacing, limits the impact avoiding binding force butt joint shape from there through the displacement of upper and lower electrode and laterally and tightly propped piece.
D) on electrode select use graphite electrode, owing to graphite electrode is consumable accessory, need to often change, therefore upper,
Open T-slot on lower electrode holder to be connected with T-shaped graphite electrode, i.e. ensured the contact area of graphite electrode and electrode tip holder, the most more
Change conveniently, it is easier to the processing of graphite electrode.
E) based on the change on above-mentioned resistance brazing equipment, by soldering test, we determined that optimal bonding power
Scope, holding time, optimal cylinder-pressing power, and upper and lower interelectrode distance and Muscovitum withstanding tight block and baffle spacing from,
Under this technological parameter, welding i.e. ensure that takeshapes of closure size, also ensure that the brazing area between the internal each copper cash of end socket, with
Time appropriate parameter also ensure that stator coil copper cash paint film in addition at end socket will not cause burning owing to soldering heat is excessive
Damage.
Accompanying drawing explanation
Fig. 1 resistance brazing equipment schematic diagram
Detailed description of the invention:
A kind of core main pump motor stator coil end socket resistance brazing technology, every coil of the stator coil of core main pump motor
All rearranged by the rectangular copper wire of many band paint films, by the method for resistance brazing by the two of every stator coil ends
In the range of certain length, scattered copper cash fuses into one.
(1) copper cash base material material: copper (trade mark: Tu2), single copper section size: 2.06mm*9.73mm, tolerance+
0.1mm；The lamellar preseting solder trade mark: BCuP-5, specification: 0.254mm*50.8mm*20mm, the bar-shaped filling solder trade mark: BCuP-
5, specification: Ф 1.575mm*900mm；
(2) stator coil end enclosure structure: become two row stackings to form by 20 copper cash；After brake forming, then by coil-end
In the about 50mm length range in portion, soldering is integral；
(3) brazing process parameter: output 10-15KW, discontinuous heats, the holding time: about 2 minutes；Power on extreme pressure
Clamp force: 0.2Mpa, horizontal thrust: 0.2Mpa；
(4) welding procedure:
A) prepare, upper graphite electrode is fallen, by the puller bolt of the cylinder of upper electrode, graphite electrode spacing in adjustment
Lower graphite electrode 20mm, electrode cylinder nut in locking, its position is fixed；Lateral cylinder is opened, adjusts Muscovitum cushion block thick
Degree, makes cushion block tip to face distance head end baffle part distance 19mm；Electrode in rise, is placed into support by the stator coil after molding
On, weld tabs is assembled at the end socket pre-welding of stator coil both sides, places a piece of weld tabs, each joint 9 for every layer；
B) assembling, opens the lateral cylinder of head, end socket is applied lateral thrust, is then turned on electrode cylinder, makes to power on
Extremely end socket is applied downward thrust, end socket is restrained and firmly keeps rectangle, observe and confirm that upper and lower graphite electrode is upper and lower with end socket
Face is fully contacted, and contact area is greater than 60%；
C) welding, is welded by above-mentioned parameter, the situation of being heated according to workpiece and weld tabs fusing feelings in welding process
Condition discontinuous heated parts；Using bar-shaped solder to fill in end socket end and side, weld tabs stops heating, joint after being completely melt
Naturally cool to room temperature；
D) unclamping side-clamping mechanism and upper-lower compacting electrode, after being pulled down by end socket, redundant brazing filler metal is removed in polishing.
A kind of core main pump motor stator coil resistance brazing equipment, this equipment is adjusted by base 1, head 2, upper electrode cylinder
Bolt 3, upper electrode double-rod cylinder 4, upper electrode holder 5, upper T-shaped graphite electrode 6, mica block baffle plate 7, under T-shaped graphite electrode 8, cloud
Female withstanding tight block 9, lower electrode holder 10, head adjust bolt 11 up and down, laterally and tightly propped double-rod cylinder 12, head laterally adjust bolt 13
Deng composition；
As it is shown in figure 1, resistance brazing equipment is fixing on the table by base 1, after stator coil is put on support,
First pass through that head adjusts bolt 11 up and down, head laterally adjusts bolt 13 and adjusts head 2 position, and end socket two is placed on mica block
Baffle plate 7, under on T-shaped graphite electrode 8, open laterally and tightly propped double-rod cylinder 12 and by Muscovitum withstanding tight block 9, end socket laterally stepped up, on
Electrode double-rod cylinder 4 applies the pressure of vertical direction by upper electrode holder 5 and upper T-shaped graphite electrode 6 to end socket, uses this kind of side
Formula, it is ensured that upper T-shaped graphite electrode 6, under T-shaped graphite electrode 8 keeping parallelism in assembling and welding process, simultaneously and mica block
Keep vertical between baffle plate 7 and Muscovitum withstanding tight block 9, thereby guarantee that seal head molding shape；And assembling time by electrode cylinder
The thickness adjusting bolt 3 and Muscovitum withstanding tight block 9 can control the upper T-shaped graphite electrode 6 of impaction state, under T-shaped graphite electrode 8 with
And the distance between mica block baffle plate 7 and Muscovitum withstanding tight block 9；Upper electrode holder 5 has seniority among brothers and sisters hole with auxiliary heat dissipation, go up simultaneously
Electrode tip holder 5, lower electrode holder 10 are internal has water annulus, is connected with water cooling unit respectively at the source of welding current by water-cooled cable, weldering
Upper electrode holder 5 and lower electrode holder 10 and the temperature of cable is reduced by recirculated water cooling, it is achieved weld continuously when connecing.
Claims (2)
1. a core main pump motor stator coil end socket resistance brazing technology, is characterized in that: the stator coil of core main pump motor
Every coil is all rearranged by the rectangular copper wire of many band paint films, by the method for resistance brazing by the two of every stator coil
In the range of the certain length of individual end, scattered copper cash fuses into integrally:
(1) copper cash base material material: copper (trade mark: Tu2), single copper section size: 2.06mm*9.73mm, tolerance+0.1mm；
The lamellar preseting solder trade mark: BCuP-5, specification: 0.254mm*50.8mm*20mm, the bar-shaped filling solder trade mark: BCuP-5, rule
Lattice: Ф 1.575mm*900mm；
(2) stator coil end enclosure structure: become two row stackings to form by 20 copper cash；After brake forming, then by end turn
In about 50mm length range, soldering is integral；
(3) brazing process parameter: output 10-15KW, discontinuous heats, the holding time: about 2 minutes；Power on extreme pressure clamp force:
0.2Mpa, horizontal thrust: 0.2Mpa；
(4) welding procedure:
A) prepare, upper graphite electrode is fallen, by the puller bolt of the cylinder of upper electrode, stone under graphite electrode spacing in adjustment
Electrode ink 20mm, electrode cylinder nut in locking, its position is fixed；Lateral cylinder is opened, adjusts Muscovitum pad thickness, make
Cushion block tip to face distance head end baffle part distance 19mm；Electrode in rise, is placed into the stator coil after molding on support, will
Weld tabs is assembled at the end socket pre-welding of stator coil both sides, places a piece of weld tabs, each joint 9 for every layer；
B) assembling, opens the lateral cylinder of head, end socket is applied lateral thrust, is then turned on electrode cylinder, makes electrode pair
End socket applies downward thrust, is restrained by end socket and firmly keeps rectangle, observes and confirms that upper and lower graphite electrode fills with end socket top and bottom
Tap is touched, and contact area is greater than 60%；
C) welding, is welded by above-mentioned parameter, in welding process between situation of being heated according to workpiece and weld tabs fusing situation
Disconnected formula heated parts；Using bar-shaped solder to fill in end socket end and side, weld tabs stops heating after being completely melt, joint is natural
It is cooled to room temperature；
D) unclamping side-clamping mechanism and upper-lower compacting electrode, after being pulled down by end socket, redundant brazing filler metal is removed in polishing.
2. a core main pump motor stator coil resistance brazing equipment, is characterized in that: whole resistance brazing equipment passes through base (1)
Fixing on the table, after being put on support by stator coil, first pass through that head adjusts bolt (11) up and down, head laterally adjusts
Bolt (13) adjusts head (2) position, end socket two is placed on mica block baffle plate (7), under on T-shaped graphite electrode (8), opening side
End socket is laterally stepped up by Muscovitum withstanding tight block (9) to holding out against double-rod cylinder (12), then open electrode double-rod cylinder (4) and pass through
Upper electrode holder (5) and upper T-shaped graphite electrode (6) apply the pressure of vertical direction to end socket, use this kind of mode, it is ensured that upper T
Type graphite electrode (6), under T-shaped graphite electrode (8) keeping parallelism in assembling and welding process, simultaneously with mica block baffle plate (7)
And keep vertical between Muscovitum withstanding tight block (9), thereby guarantee that seal head molding shape；And assembling time by electrode cylinder adjust
The thickness of bolt (3) and Muscovitum withstanding tight block (9) can control impaction state upper T-shaped graphite electrode (6), under T-shaped graphite electrode
(8) distance and between mica block baffle plate (7) and Muscovitum withstanding tight block (9)；Upper electrode holder (5) has seniority among brothers and sisters hole with auxiliary
Heat radiation, upper electrode holder (5), lower electrode holder (10) inside have water annulus, by water-cooled cable respectively at the source of welding current simultaneously
It is connected with water cooling unit, during welding, reduces upper electrode holder (5) and lower electrode holder (10) and the temperature of cable by recirculated water cooling, real
Weld the most continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685700.8A CN106238845B (en) | 2016-08-18 | 2016-08-18 | Core main pump motor stator coil end socket resistance brazing technology and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685700.8A CN106238845B (en) | 2016-08-18 | 2016-08-18 | Core main pump motor stator coil end socket resistance brazing technology and its equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106238845A true CN106238845A (en) | 2016-12-21 |
| CN106238845B CN106238845B (en) | 2018-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610685700.8A Active CN106238845B (en) | 2016-08-18 | 2016-08-18 | Core main pump motor stator coil end socket resistance brazing technology and its equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106238845B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414460A (en) * | 2021-07-09 | 2021-09-21 | 陕西斯瑞新材料股份有限公司 | Welding process of MW-level wind power copper bar |
| CN113828886A (en) * | 2021-09-07 | 2021-12-24 | 东方电气集团东方电机有限公司 | Automatic brazing equipment for large-scale steam generator rotor coil and using method thereof |
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| EP0041430B1 (en) * | 1980-05-30 | 1984-02-29 | Regie Nationale Des Usines Renault | Process and apparatus for continuous soldering from complementary heated solderings by means of a wire |
| JP2004222493A (en) * | 2002-12-26 | 2004-08-05 | Fuji Electric Systems Co Ltd | Brazing apparatus for rotor coil and brazing method for same |
| JP2007275968A (en) * | 2006-04-11 | 2007-10-25 | Matsushita Electric Ind Co Ltd | Brazing method and heat exchange coil of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414460A (en) * | 2021-07-09 | 2021-09-21 | 陕西斯瑞新材料股份有限公司 | Welding process of MW-level wind power copper bar |
| CN113828886A (en) * | 2021-09-07 | 2021-12-24 | 东方电气集团东方电机有限公司 | Automatic brazing equipment for large-scale steam generator rotor coil and using method thereof |
| CN113828886B (en) * | 2021-09-07 | 2022-09-27 | 东方电气集团东方电机有限公司 | Automatic brazing equipment for rotor coil of large steam turbine generator and using method thereof |
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| Publication number | Publication date |
|---|---|
| CN106238845B (en) | 2018-04-20 |
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