CN106736295B - A kind of precision machining method of nuclear power main body busbar - Google Patents
A kind of precision machining method of nuclear power main body busbar Download PDFInfo
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- CN106736295B CN106736295B CN201611246288.6A CN201611246288A CN106736295B CN 106736295 B CN106736295 B CN 106736295B CN 201611246288 A CN201611246288 A CN 201611246288A CN 106736295 B CN106736295 B CN 106736295B
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- busbar
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- primary welding
- exchange side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Pressure Welding/Diffusion-Bonding (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of precision machining method of nuclear power main body busbar, includes the steps that successively processing primary welding busbar, exchange side busbar, exchange side terminal row, include the steps that assembling is whole and it is whole to suppress detection.The step of including blocking end face and stepped hole, clear up primary welding busbar inner cavity and outer surface using ultrasonic wave water washing during processing primary welding busbar, guarantees the cleaning of its internal cavities；Further include the steps that finishing primary welding busbar outer surface and high temperature-resistant felt protection finishing outer surface, ensure that its machining accuracy and combine the finish of contact surface.Include that primary welding busbar is uprightly welded on exchange side busbar in the whole step of assembling, and diagonal the step of welding simultaneously, so that welding stress deformation is cancelled out each other, welding stress is prevented to be deformed.
Description
Technical field
The present invention relates to a kind of processing method of busbar more particularly to a kind of precision machining methods of nuclear power main body busbar.
Background technique
Nuclear power projects are hard contact with the connecting portion of each component profile of main body busbar, then to the cooperation precision of contact surface
It is required that it is stringent, to ensure that electric appliance original part can be fitted closely with main body busbar, meet the job requirement of busbar；Because on main body busbar
Electric appliance original part operating temperature no more than 25 DEG C, the interior cavity radiating of busbar profile must be rapid then, and inner cavity water flow pressure need to be up to 1
Megapascal, it is then stringent to the air-tightness requirement that profiled ends block weld seam, and inner cavity need to be controlled and completely cleaned, it especially should be without aluminium
Bits；When product work operation, 30 kilo-amperes of carrying and the above electric current are needed on the outside of busbar, side weld bearing capacity outside busbar is required very
Height need to carry out a large amount of solderings, easily lead to welding deformation.
Summary of the invention
The present invention is directed to the above deficiency in the prior art, and larger current can be carried by providing one kind, and weldquality is higher,
The precision machining method of busbar deformation and the higher nuclear power main body busbar of air-tightness is not easily led to.
The technical scheme to solve the above technical problems is that a kind of precision machining method of nuclear power main body busbar,
The following steps are included:
1) end face, end-face hole and the stepped hole of the primary welding busbar of processing
Milling machine machining spindle revolving speed 5000~6000r/mi n is set, end-face hole, end face and the rank of primary welding busbar are milled
Terraced hole；
2) stepped hole and end-face hole of the primary welding busbar of sealing
The stepped hole and end-face hole that primary welding busbar is sealed using sealing plate seal the stepped hole, benefit using hole sealing plate
The end-face hole of the primary welding busbar is sealed with side seal board；
3) inner cavity and outside of the primary welding busbar of cleaning
The aluminium skimmings and dirt of primary welding busbar inner cavity, outer surface are cleared up using ultrasonic wave water washing；
4) fixed side seal board
Groove is beaten to the side seal board, preheats side seal board, and side seal board is welded on the end face of primary welding busbar；
5) surface of the primary welding busbar of finishing
Milling machine machining spindle revolving speed 6000~8000r/mi n, cutter diameter >=65mm are set, its surface smoothness is needed
Reach 1.6~3.2um.
6) high temperature felt is protected
Finished surface is protected by 300 DEG C of high temperature resistant or more of felt after polished surface, polished surface
Planarity requirements 0.05mm, felt are protected from surface and collide in turnover and below process；
7) nickel plating
Nickel Plating Treatment is carried out to the position of primary welding busbar connecting circuit element, enhances the electric conductivity of junction；
8) processing exchange side busbar and exchange side terminal arrange, and with sonic cleaning exchange side busbar with exchange side terminal
Row；
9) the primary welding busbar group of welding
Firstly, carrying out the pre-heat treatment to primary welding busbar, preheating temperature is controlled at 100~200 DEG C；
Then, two pieces of primary welding busbars are welded into primary welding busbar group by connecting plate；
10) overall package
Exchange side bus-bar horizontal after processing is placed, primary welding busbar group is stood upright on the busbar of the exchange side,
And the bottom end of primary welding busbar group is vertically welded on exchange side busbar welding unit: firstly, carrying out surrounding spot welding guarantor
The primary welding busbar group of card is uprightly fixed, and is diagonally welded simultaneously, welding direction on the contrary, i.e. two welding guns from diagonally welding simultaneously；
Secondly, welding surrounding straight bead；Then, turning weld seam is welded, one layer of welding is so far completed；Then, above step is repeated, directly
To reach leg be a40 high-bearing capacity weld seam；Finally, installation exchange side terminal row, first at the both ends of the exchange side busbar
It is bolted exchange side terminal row, then exchange side terminal row is welded on the busbar of the exchange side.
The beneficial effects of the present invention are: 1. use the inner cavity and outside of sonic cleaning busbar, each component aluminium profiles ensure that
The cleaning of material internal cavities；2, reasonable number milling parameter and high temperature-resistant felt are used, ensure that each component aluminium shape surface adds
The finish of work precision and combination contact surface；3, it is diagonally welded simultaneously using two people, so that welding stress deformation is cancelled out each other, prevent
Stress is deformed when welding.
Further, further comprising the steps of:
11) it examines
After the completion of welding, equipment is suppressed by profession, product is carried out to suppress verifying, it is ensured that under the operating pressure of 1 megapascal
Pressure maintaining 6 hours or more.
Further, the sealing plate is stainless steel material.
Further, in step 4), preheating temperature is controlled at 100~200 DEG C.
Further, spot welding spacing is 80mm~110mm in step 10).
Further, in step 10), after the completion of every layer of welding, surface film oxide is removed, then naturally cools to temperature not
When higher than 70 DEG C, next layer of welding could be started.
Using above-mentioned further technical solution the utility model has the advantages that reasonable welding condition is used, and to welding
Product after the completion carries out suppressing test, ensure that a group air-tightness for postwelding product, in addition, can reduce welding using this technique
Defect, it is ensured that every layer of weld strength guarantees weld penetration, to guarantee the requirement of air-tightness and high-bearing capacity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the main body busbar of nuclear power of the present invention；
Fig. 2 is the structural schematic diagram that busbar is once welded in the present invention；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the spot welding schematic diagram in step 10) of the present invention；
Fig. 5 is the straight bead schematic diagram in step 10) of the present invention；
Fig. 6 is in step 10) of the present invention to fillet weld schematic diagram；
Fig. 7 is the welding side seal board weld seam schematic diagram in step 3) of the present invention；
Fig. 8 is weld joint schematic diagram of the present invention；
In the accompanying drawings, list of designations represented by each label is as follows: 1, once weld busbar, 2, exchange side busbar,
3, exchange side terminal row, 4, connecting plate, 5, stepped hole, 6, end-face hole, 7, side seal board, 8, hole sealing plate, 9, spotweld, 10, straight line
Weld seam, 11, turning weld seam, 12, the stifled weld seam of side seal.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As Figure 1-Figure 8, a kind of precision machining method of nuclear power main body busbar, the main body busbar include primary welding
Busbar, exchange side busbar, exchange side terminal row, inner cavity is cavity, comprising the following steps:
1) end face, end-face hole and the stepped hole of the primary welding busbar 1 of processing
Set milling machine machining spindle revolving speed 5000~6000r/mi n, mill the end-face hole 6 of primary welding busbar 1, end face and
Stepped hole 5；
2) stepped hole 5 and end-face hole 6 of the primary welding busbar 1 of sealing
The stepped hole 5 is sealed using hole sealing plate 8, the end-face hole 6 of the primary welding busbar 1 is sealed using side seal board 7；
3) inner cavity and outside of the primary welding busbar 1 of cleaning
Primary welding 1 inner cavity of busbar, outer surface aluminium skimmings and dirt are cleared up using ultrasonic wave water washing；
4) fixed side seal board
Groove is beaten to the side seal board 7, preheats side seal board 7, and side seal board 7 is welded to the end face of primary welding busbar 1
On, end-face hole 6 is blocked, weld seam is as shown in Figure 7；
5) surface of the primary welding busbar 1 of finishing
Milling machine machining spindle revolving speed 6000~8000r/mi n, cutter diameter >=65mm are set, its surface smoothness is needed
Reach 1.6~3.2um；
6) high temperature felt is protected
The polished surface of primary welding busbar is protected by 300 DEG C of high temperature resistant or more of felt, finishes table
The planarity requirements 0.05mm in face, felt are protected from surface and collide in turnover and below process；
7) nickel plating
Nickel Plating Treatment is carried out to the position of primary welding 1 connecting circuit element of busbar, enhances the electric conductivity of junction；
8) processing exchange side busbar 2 arranges 3 with side terminal is exchanged
9) the primary welding busbar group of processing
Firstly, carrying out the pre-heat treatment to primary welding busbar 1, preheating temperature is controlled at 100~200 DEG C；
Then, two pieces of primary welding busbars 1 are welded into primary welding busbar group by connecting plate；
10) overall package
Exchange side busbar 2 after processing is horizontally arranged, primary 1 group of busbar of welding is stood upright on into exchange side busbar 2
On, and the bottom end of primary welding busbar group is vertically welded on exchange side busbar 2: firstly, carrying out surrounding spot welding guarantees one
Secondary 1 group of welding busbar is uprightly fixed, spotweld as shown in figure 4, diagonally weld simultaneously, welding direction on the contrary, i.e. two welding guns from
Diagonally weld simultaneously；Secondly, welding surrounding straight bead, straight bead are as shown in Figure 5；Then, turning weld seam 11 is welded, so far
One layer of welding is completed, turning weld seam is as shown in Figure 6；Then, above step is repeated, until reaching the high-bearing capacity that leg is a40
Weld seam, as shown in Figure 8；Finally, installation exchange side terminal row 3, first in the bolts at two ends connection exchange side of the exchange side busbar 2
Terminal block 3, then exchange side terminal row 3 is welded on exchange side busbar 2.
11) it examines
After the completion of welding, equipment is suppressed by profession, product is carried out to suppress verifying, it is ensured that under the operating pressure of 1 megapascal
Pressure maintaining 6 hours or more.The side seal board is stainless steel material.
In step 4), preheating temperature is controlled at 100~200 DEG C.In step 10), spot welding spacing be 80mm~
110mm removes surface film oxide after the completion of every layer of welding, when then naturally cooling to temperature not higher than 70 DEG C, under could starting
One layer of welding.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of precision machining method of nuclear power main body busbar, the main body busbar include primary welding busbar, exchange side busbar,
Side terminal row is exchanged, inner cavity is cavity, which comprises the following steps:
1) end face, end-face hole and the stepped hole of the primary welding busbar of processing
Milling machine machining spindle revolving speed 5000~6000r/mi n is set, end-face hole, end face and the stepped hole of primary welding busbar are milled；
2) stepped hole and end-face hole of the primary welding busbar of sealing
The stepped hole is sealed using hole sealing plate, the end-face hole of the primary welding busbar is sealed using side seal board；
3) inner cavity and outside of the primary welding busbar of cleaning
The aluminium skimmings and dirt of primary welding busbar inner cavity, outer surface are cleared up using ultrasonic wave water washing；
4) fixed side seal board
Groove is beaten to the side seal board, preheats side seal board, and side seal board is welded on the end face of primary welding busbar；
5) surface of the primary welding busbar of finishing
Milling machine machining spindle revolving speed 6000~8000r/mi n, cutter diameter >=65mm are set, reach its surface smoothness need to
1.6~3.2um；
6) high temperature felt is protected
Finished surface is protected by 300 DEG C of high temperature resistant or more of felt after polished surface；
7) nickel plating
Nickel Plating Treatment is carried out to the position of primary welding busbar connecting circuit element；
8) processing exchange side busbar is arranged with side terminal is exchanged
9) the primary welding busbar group of welding
Firstly, carrying out the pre-heat treatment to primary welding busbar, preheating temperature is controlled at 100-200 DEG C；
Then, two pieces of primary welding busbars are welded into primary welding busbar group by connecting plate；
10) overall package
Exchange side bus-bar horizontal after processing is placed, primary welding busbar group is stood upright on the busbar of the exchange side, and will
The bottom end of primary welding busbar group is vertically welded on exchange side busbar welding unit: firstly, carrying out surrounding spot welding guarantees one
Secondary welding busbar group is uprightly fixed, and is diagonally welded simultaneously, welding direction on the contrary, i.e. two welding guns from diagonally welding simultaneously；Secondly,
Weld surrounding straight bead；Then, turning weld seam is welded, one layer of welding is so far completed；Then, above step is repeated, until reaching
The high-bearing capacity weld seam for being a40 to leg；Finally, installation exchange side terminal row, first in the bolts at two ends of the exchange side busbar
Connection exchange side terminal row, then exchange side terminal row is welded on the busbar of the exchange side.
2. a kind of precision machining method of nuclear power main body busbar according to claim 1, which is characterized in that further include following
Step:
11) it examines
After the completion of welding, equipment is suppressed by profession, product is carried out to suppress verifying, it is ensured that the pressure maintaining under the operating pressure of 1 megapascal
6 hours or more.
3. a kind of precision machining method of nuclear power main body busbar according to claim 1, which is characterized in that the side seal board
For stainless steel material.
4. a kind of precision machining method of nuclear power main body busbar according to claim 1, which is characterized in that in step 4)
In, preheating temperature is controlled at 100~200 DEG C.
5. a kind of precision machining method of nuclear power main body busbar according to claim 1, which is characterized in that in step 10)
In, spot welding spacing is 80mm~110mm.
6. a kind of precision machining method of nuclear power main body busbar according to claim 1, which is characterized in that in step 10)
In, after the completion of every layer of welding, surface film oxide is removed, when then naturally cooling to temperature not higher than 70 DEG C, could be started next
The welding of layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611246288.6A CN106736295B (en) | 2016-12-29 | 2016-12-29 | A kind of precision machining method of nuclear power main body busbar |
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| CN201611246288.6A CN106736295B (en) | 2016-12-29 | 2016-12-29 | A kind of precision machining method of nuclear power main body busbar |
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| CN106736295A CN106736295A (en) | 2017-05-31 |
| CN106736295B true CN106736295B (en) | 2019-01-08 |
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| CN109807547B (en) * | 2017-11-22 | 2020-11-06 | 苏州市艾西依钣金制造有限公司 | Welding, polishing and wire drawing method of stainless steel wire drawing plate |
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| KR20100106820A (en) * | 2009-03-24 | 2010-10-04 | 이종성 | Apparatus to arrange bus bar |
| CN203504394U (en) * | 2013-10-25 | 2014-03-26 | 国家电网公司 | Composite busbar for paralleled IGBT |
| CN104493425A (en) * | 2013-10-29 | 2015-04-08 | 浙江金博金属科技有限公司 | Cold drawing molding manufacturing process of copper-clad aluminum composite busbar |
| CN104400353B (en) * | 2014-11-19 | 2017-01-18 | 江苏华鹏母线股份有限公司 | Numerical control production method of copper busbars |
| CN105773075A (en) * | 2016-03-15 | 2016-07-20 | 安徽鑫旭新材料股份有限公司 | Production method of heavy-load conductive copper busbar with huge width-to-thickness ratio |
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Denomination of invention: A precision machining method of nuclear power main busbar Effective date of registration: 20211111 Granted publication date: 20190108 Pledgee: Longkou Conglin Machinery Manufacturing Co.,Ltd. Pledgor: SHANDONG NOLLVETEC LIGHTWEIGHT EQUIPMENT CO.,LTD. Registration number: Y2021980012229 |
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Date of cancellation: 20211228 Granted publication date: 20190108 Pledgee: Longkou Conglin Machinery Manufacturing Co.,Ltd. Pledgor: SHANDONG NOLLVETEC LIGHTWEIGHT EQUIPMENT CO.,LTD. Registration number: Y2021980012229 |
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Denomination of invention: A Precision Machining Method for Nuclear Power Main Busbar Effective date of registration: 20220928 Granted publication date: 20190108 Pledgee: Yantai Longkou sub branch of Rizhao Bank Co.,Ltd. Pledgor: SHANDONG NOLLVETEC LIGHTWEIGHT EQUIPMENT CO.,LTD. Registration number: Y2022980016803 |