CN103317238A - Laser welding method of nuclear fuel storage framework bush cladding plate and square tube - Google Patents
Laser welding method of nuclear fuel storage framework bush cladding plate and square tube Download PDFInfo
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- CN103317238A CN103317238A CN2013102586323A CN201310258632A CN103317238A CN 103317238 A CN103317238 A CN 103317238A CN 2013102586323 A CN2013102586323 A CN 2013102586323A CN 201310258632 A CN201310258632 A CN 201310258632A CN 103317238 A CN103317238 A CN 103317238A
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Abstract
The invention relates to a laser welding method of a nuclear fuel storage framework bush cladding plate and a square tube. The method includes: mounting the formed square tube on an inner support tool, mounting a boron aluminum plate and the cladding plate, allowing the cladding plate to be located on a line position of the square tube, pressing the non-welding part of the cladding plate with a pneumatic piano type pressing plate, adjusting laser power and welding focus point distance, mounting a roller device which is pneumatically controllable in height and pressing force at the front, namely the advancing direction, of a laser welding head to achieve roller leveling prior to welding, and feeding helium or argon high in purity through a blowing pipe during welding so as to form high-quality welding joints; adjusting laser welding power to 2500-4000W and welding focus point to 108.5-109mm, namely the distance from the cladding plate and the upper surface of a laser welding head is 108.5-109mm. If the focusing size is excessively high, mechanical performance of the welding joints is lower than base materials, and if the focusing size is excessively low, the inner surface of the square tube is yellowed or blackened.
Description
Technical field
What the present invention relates to is a kind of nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding, bunkering screen work storage sleeve pipe is widely used in storing fuel assembly in nuclear power station and the nuclear chemical industry system, be and the closely-related equipment of nuclear safety, plant life cycle can not be lower than 40 years.Require storage sleeve pipe strict control welding deformation when welding is made, internal surface of casing must not have the protrusions such as overlap that are higher than 0.1mm.That the weld mechanical property must not be lower than the mechanical property of material own at the 0.8mm die mould thin plate of the square tube outer surface welding L=4410mm of L=5060mm, wall thickness 2mm.
Background technology
(thin plate 0.5～1.0mm, slab 2.0～4.0mm) generally adopt the method for argon arc welding or electric resistance welding in the at present welding of similar devices or material, argon arc welding very easily produces deformation of products, cause easily that thin plate burn-through or overlap are too high and labour intensity is large, production efficiency is low; Though the electric resistance welding distortion is less, in this long tube, can't also can't realize continuous welding by the installing electrodes rod.
Summary of the invention
The present invention seeks to for above-mentioned weak point, a kind of nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding are provided, utilize tooling fixture to be equipped with the laser interruption overlap welding that laser welding apparatus is finished the electric resistance welding formula between nuclear fuel storage sleeve pipe cladding plate and the square tube.Adopt the method for laser weld can reach the Forming Quality that shows that is similar to electric resistance welding, also can select arbitrarily sequential welding or intermittent weld, the 4m weld seam only needed to finish in 2 minutes.
Nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding are to take following technical scheme to realize:
Nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding are as follows:
The square tube of moulding is contained on the inner support frock, load onto boron aluminium sheet and cladding plate, cladding plate should scribing position be put on square tube, and adopt pneumatic piano type pressing plate to push down in the non-welding position of cladding plate, adjust laser power and welding focus point distance, the direction front portion of namely advancing in the laser welding head front portion, installation can be by the roller devices of pneumatic adjusting height and thrust, realize the flat rear welding of first roller spreading, pass into high-purity helium or argon gas through gas blow pipe during welding, weld, can form high-quality weld seam.
Described laser welding power is adjusted into 2500W～4000W, welding focus point distance is adjusted into 108.5mm～109mm, be that plan range is 108.5mm～109mm on the cladding plate identity distance laser welding head, the too high weld properties of focal dimension is lower than mother metal, and focal dimension is crossed low then square tube inner surface color jaundice or blackout.
Bunkering screen work storage sleeve pipe cladding plate thickness is that 0.5～1.0mm and square tube thickness are 2.0～4.0mm, and regulating laser power according to sheet metal thickness is 2500～4000W, and welding focus point distance is finished the laser weld of electric resistance welding formula between 95～115mm.
Nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding, in the process of producing bunkering screen work storage sleeve pipe, the one, strictly controlled welding deformation (substantially without distortion); The 2nd, weldquality is better than argon arc welding greatly; The 3rd, enhance productivity 15～20 times; The 4th, alleviated labour intensity.
Nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding adopt the method for laser weld can reach the Forming Quality that shows that is similar to electric resistance welding, also can select arbitrarily sequential welding or intermittent weld, and the 4m weld seam only needed to finish in 2 minutes.The manufacturing technology of nuclear fuel storage screen work storage sleeve pipe is reached advanced world standards.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is nuclear fuel storage screen work storage sleeve pipe cladding plate of the present invention and square tube method for laser welding and frock schematic diagram thereof.
The specific embodiment
With reference to accompanying drawing 1, nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding are as follows:
The square tube 1 of moulding is contained on the inner support frock 5, load onto boron aluminium sheet and cladding plate 2, cladding plate 2 should scribing position be put on square tube 1, and adopt pneumatic piano type pressing plate to push down in cladding plate 2 non-welding positions, adjust laser power and welding focus point distance, the direction front portion of namely advancing in laser welding head 4 front portions, installation can be by the roller devices of pneumatic adjusting height and thrust, realize the flat rear welding of first roller spreading, pass into high-purity helium or argon gas through gas blow pipe 3 during welding, weld, can form high-quality weld seam.
Described laser welding power is adjusted into 2500W～4000W, welding focus point distance H is adjusted into 108.5mm～109mm, be that plan range is 108.5mm～109mm on the cladding plate 2 identity distance laser welding heads 4, the too high weld properties of focal dimension is lower than mother metal, and focal dimension is crossed low then square tube inner surface color jaundice or blackout.
Bunkering screen work storage sleeve pipe cladding plate 2 thickness are 0.5～1.0mm, and square tube 1 thickness is 2.0～4.0mm, and regulating laser power according to sheet metal thickness is 2500～4000W, and welding focus point distance H is 95～115mm, finishes the laser weld of electric resistance welding formula.
A kind of can utilize laser welding apparatus finish bunkering screen work storage sleeve pipe cladding plate (0.5～1.0mm) with square tube (the lap-welded method of 2.0～4.0mm) electric resistance welding formulas.Product is installed on the technological equipment, by regulating laser power, weld focus point and adopting high-purity helium protection, welding deformation is controlled to minimum, can determine as required full weld or intermittent weld to reach perfect welding effect.
The bunkering screen work storage sleeve pipe of nuclear fuel storage screen work storage sleeve pipe cladding plate of the present invention and the welding of square tube method for laser welding is widely used in storing fuel assembly in nuclear power station and the nuclear chemical industry system, be and the closely-related equipment of nuclear safety, plant life cycle is not less than 40 years.When storage sleeve pipe cladding plate and square tube laser weld, strictly control welding deformation, internal surface of casing must not have the protrusions such as overlap that are higher than 0.1mm.Weld the 0.8mm cladding plate (die mould thin plate) of L=4410mm at the square tube outer surface of L=5060mm, wall thickness 2mm, the weld mechanical property is not less than the mechanical property of material own.
Claims (2)
1. a nuclear fuel storage screen work storage sleeve pipe cladding plate and square tube method for laser welding is characterized in that:
The square tube of moulding is contained on the inner support frock, load onto boron aluminium sheet and cladding plate, cladding plate should scribing position be put on square tube, and adopt pneumatic piano type pressing plate to push down in the non-welding position of cladding plate, adjust laser power and welding focus point distance, the direction front portion of namely advancing in the laser welding head front portion, installation can be by the roller devices of pneumatic adjusting height and thrust, realize the flat rear welding of first roller spreading, pass into high-purity helium or argon gas through gas blow pipe during welding, weld, can form high-quality weld seam;
Described laser welding power is adjusted into 2500W～4000W, welding focus point distance is adjusted into 108.5mm～109mm, be that plan range is 108.5mm～109mm on the cladding plate identity distance laser welding head, the too high weld properties of focal dimension is lower than mother metal, and focal dimension is crossed low then square tube inner surface color jaundice or blackout.
2. nuclear fuel storage screen work storage sleeve pipe cladding plate according to claim 1 and square tube method for laser welding, it is characterized in that:. bunkering screen work storage sleeve pipe cladding plate thickness is that 0.5～1.0mm and square tube thickness are 2.0～4.0mm, regulating laser power according to sheet metal thickness is 2500～4000W, welding focus point distance is 95～115mm, finishes the laser weld of electric resistance welding formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258632.3A CN103317238B (en) | 2013-06-26 | 2013-06-26 | Laser welding method of nuclear fuel storage framework bush cladding plate and square tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258632.3A CN103317238B (en) | 2013-06-26 | 2013-06-26 | Laser welding method of nuclear fuel storage framework bush cladding plate and square tube |
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| Publication Number | Publication Date |
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| CN103317238A true CN103317238A (en) | 2013-09-25 |
| CN103317238B CN103317238B (en) | 2015-05-20 |
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| CN201310258632.3A Active CN103317238B (en) | 2013-06-26 | 2013-06-26 | Laser welding method of nuclear fuel storage framework bush cladding plate and square tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511673A (en) * | 2013-09-27 | 2015-04-15 | 中核北方核燃料元件有限公司 | Spot welding and brazing integrated device of nuclear fuel element cladding pipe |
Citations (8)
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| BE826688A (en) * | 1974-03-15 | 1975-06-30 | PROCEDURE FOR CLOSING COVER TUBES FOR FUEL ELEMENTS AND COVER TUBE MADE IN ACCORDANCE WITH THIS PROCESS | |
| JPS5211946B2 (en) * | 1974-05-31 | 1977-04-04 | ||
| KR20050001630A (en) * | 2003-06-26 | 2005-01-07 | 두산중공업 주식회사 | The Manufacturing Method for Can in Fuel Rack |
| CN1953839A (en) * | 2004-05-18 | 2007-04-25 | 川崎重工业株式会社 | Laser welding method, laser weld joint, outer plate panel, and rolling stock body structure |
| CN101804512A (en) * | 2009-02-16 | 2010-08-18 | 潘戈 | Welding method of absorber plate and heat conducting pipes and special equipment implementing same |
| CN202470632U (en) * | 2012-03-06 | 2012-10-03 | 北京速原中天科技股份公司 | Heat exchange plate layer for freeze dryer |
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
| JP2012206156A (en) * | 2011-03-30 | 2012-10-25 | Tadano Ltd | Boom, and method for welding the same |
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2013
- 2013-06-26 CN CN201310258632.3A patent/CN103317238B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE826688A (en) * | 1974-03-15 | 1975-06-30 | PROCEDURE FOR CLOSING COVER TUBES FOR FUEL ELEMENTS AND COVER TUBE MADE IN ACCORDANCE WITH THIS PROCESS | |
| JPS5211946B2 (en) * | 1974-05-31 | 1977-04-04 | ||
| KR20050001630A (en) * | 2003-06-26 | 2005-01-07 | 두산중공업 주식회사 | The Manufacturing Method for Can in Fuel Rack |
| CN1953839A (en) * | 2004-05-18 | 2007-04-25 | 川崎重工业株式会社 | Laser welding method, laser weld joint, outer plate panel, and rolling stock body structure |
| CN101804512A (en) * | 2009-02-16 | 2010-08-18 | 潘戈 | Welding method of absorber plate and heat conducting pipes and special equipment implementing same |
| JP2012206156A (en) * | 2011-03-30 | 2012-10-25 | Tadano Ltd | Boom, and method for welding the same |
| CN202470632U (en) * | 2012-03-06 | 2012-10-03 | 北京速原中天科技股份公司 | Heat exchange plate layer for freeze dryer |
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511673A (en) * | 2013-09-27 | 2015-04-15 | 中核北方核燃料元件有限公司 | Spot welding and brazing integrated device of nuclear fuel element cladding pipe |
| CN104511673B (en) * | 2013-09-27 | 2017-04-26 | 中核北方核燃料元件有限公司 | Spot welding and brazing integrated device of nuclear fuel element cladding pipe |
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| CN103317238B (en) | 2015-05-20 |
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Inventor after: Dai Xiaoyan Inventor after: Zhang Guoling Inventor after: Hu Jiafei Inventor after: He Hui Inventor after: Mo Huaisen Inventor after: Tan Jingyao Inventor after: Yuan Chengyu Inventor before: Dai Xiaoyan Inventor before: Zhang Guoling Inventor before: Hu Jiafei Inventor before: He Hui |
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Effective date of registration: 20151204 Address after: 210003 No. 16, Chahar Road, Gulou District, Jiangsu, Nanjing Patentee after: Jiangsu Green Water Treatment Co., Ltd. Patentee after: China Nuclear Power Engineering Co., Ltd. Address before: 210003 No. 16, Chahar Road, Gulou District, Jiangsu, Nanjing Patentee before: Jiangsu Green Water Treatment Co., Ltd. |