CN104827164A - Large-area large-thickness TU2 copper/steel explosion composite material and defect repairing method - Google Patents
Large-area large-thickness TU2 copper/steel explosion composite material and defect repairing method Download PDFInfo
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- CN104827164A CN104827164A CN201410047261.9A CN201410047261A CN104827164A CN 104827164 A CN104827164 A CN 104827164A CN 201410047261 A CN201410047261 A CN 201410047261A CN 104827164 A CN104827164 A CN 104827164A
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Abstract
The invention discloses a method for repairing defects in a production process of a large-area large-thickness TU2 copper/steel explosion composite material. The method comprises the steps of groove designing and machining, transition layer bead weld, integral heating, gradient heat preservation, coating bead weld and ultrasonic treatment. The method has the advantages that through the integral heating technology, the gradient heat preservation, and the ultrasonic impact treatment, the repairing difficulty of large-plate-width large-thickness coating copper steel composite plates is solved; and the technology and the operation flow are simple, and the method has higher economic practicality.
Description
Technical field
Patent of the present invention relates to a kind of restorative procedure solving large area heavy thickness coating (copper plate) and do not fit with substrate (steel plate), especially for the copper-steel composite plate of coating at 5-12mm.Belong to copper class technical field of composite materials.
Background technology
At present, the copper-steel composite plate produced by the method for explosive welding, will produce local and not fit when explosion technology is inappropriate, if do not repaired, and Extensive site of not fitting in the use procedure in later stage, scrapping of final acceleration equipment.Some producer domestic adopts the mode of flame baking preheating to repair when copper coating is less than 4mm and plate is little, but the limited area of baking, within the short time, temperature has just been lost, cannot continuous welding, flame baking again is also needed to weld, although can complete stickiness reparation, copper is very easily oxidized when toasting preheating and absorbs gas etc. and produces low melting point eutectic, namely produces fire check and have a strong impact on welding quality under the effect of thermal stress.If the large and thickness of plate width is when 5-12mm, too fast owing to dispelling the heat, dry temperature when rifle leaves plate face and decline immediately, the molten drop of copper cannot merge with mother metal, and the method is just unworkable; If according to the method for patent 200610040174.6, implement secondary and mend quick-fried approach, can reparation be completed, but cost increases.
Summary of the invention
Patent of the present invention provides a kind of restorative procedure, not only by not joint place seam, can reduce rehabilitation cost, but also solution copper is at high temperature oxidized and absorbs the problems such as gas, avoids fire check, ensures inner and surperficial quality.
Technical solution of the present invention: the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material and defect, its technique comprises bevel design processing, transition zone built-up welding, overall heating process, gradient uniformity insulation, coating built-up welding and ultrasonic wave process.
The coating trade mark of described copper-steel composite material is TU2.
Described bevel design and processing are according to the distinctive architectural feature of composite plate, reduce the volume of surfacing of Cu as far as possible, so polish the groove of 120 ° ± 1 ° to the layers of copper of defect area compound, permeate between in order to avoid the liquid copper in fusion area, steel side to steel grit and produce fire check, carbon steel layer is removed to 2-2.5mm downwards at compound position and processed smooth, and object is welding one deck transition zone.
Described transition zone built-up welding adopts
the welding wire of ERNi-1 or ERNiCu-7, electric current adopts 90-130A, two-layer in the built-up welding of steel side, and processing is concordant with copper steel faying face.Object prevents copper from directly contacting with carbon steel.Because copper steel is unlimited solid solution under the state of melting, limited solid solution in the solid state, and transition zone is mainly containing nickel element, and nickel can infinitely solid solution steel and copper, so the welding wire prime coat of employing ERNi-1 or ERNiCu-7, copper steel can be avoided directly to contact.
Described overall heating process is put in annealing furnace by copper-steel composite plate, and according to different thicknesss of slab, entirety is heated to 350-600 DEG C, insulation 30min.Object is pre-heated work pieces, and when being convenient to surfacing of Cu, fusing mother metal, can form molten bath.
Described gradient uniformity insulation refer to the copper-steel composite plate that preheating is terminated take out rapidly be placed on thick 30mm laid in advance heat-preservation cotton on, covering rapidly one layer of heat preservation cotton on copper-steel composite plate surface, needing the seat of built-up welding, heat-preservation cotton being removed.The method by the copper-steel composite plate holding time after preheating, can guarantee that welding temperature meets welding requirements.
Described copper coating built-up welding and ultrasonic wave process refer to use
the welding wire of ERNi-1 or ERNiCu-7 between copper and transition zone, weld one week, use instead afterwards
eRCu welding wire in the built-up welding of prime coat last layer one deck.Every built-up welding one deck copper will impact once with spherical ultrasonic impact rifle, and then scale removal of polishing carries out the built-up welding of lower one deck, built-up welding reinforcement stops built-up welding after exceeding plate face 2-3mm, 2 to 3 times are hit at the spherical ultrasonic impact rifle primary drying of built-up welding layers of copper, afterwards repair welding district heat-preservation cotton is covered with, makes it naturally cool to room temperature.The method adopts the mode of argon arc-welding built-up welding and postwelding polishing to decrease the quantity that copper forms low melting point eutectic, the method of the employing ultrasonic impact of discontinuous reduces residual thermal stress, broken coarse grain, avoids the quality problems such as the coarse grains of built-up welding region copper, plasticity decline, fire check.
Advantage of the present invention: solve large plate width by the mode of overall heating process, gradient insulation, ultrasonic impact process, heavy thickness coating blast copper-steel composite plate repairs difficult point; Technique and operating process simply, have very strong economic and practical.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, patent of the present invention is further illustrated.
Fig. 1 is the reparation groove of this technological invention.
Fig. 2 is that first three step welding block diagram of this technological invention is released.
In Fig. 1,1 is copper coating, and 2 is carbon steel layer; In Fig. 2,1 is the transition zone of first built-up welding, and 2 is the transition zone after preheating, and 3 is the packed layer of copper.
Detailed description of the invention
Embodiment 1
Material TU2+Q235B, size (6+34) × 900 × 1800mm; Size of not fitting 70 × 250mm, position is that edge is not fitted.
One, bevel design processing, adopt abrasive machine, along the line drawn in advance, be cut to carbon steel layer downwards, the copper coin of non-joint place is removed, with 60# emery wheel, 2-2.5mm is removed in the processing of Q235B plate, wherein two right angle adopt stainless steel bistrique to polish, and three limits of coating are polished to the groove of 120 °.
Two, transition zone bead-welding technology, uses the mode of argon arc welding, and adopt φ 2.4ERNi-1 welding wire, ground floor 120A electric current, second layer 110A electric current carries out welding, after built-up welding completes, processes concordant with faying face.
Three, overall heating process, adopts the programming rate of 100 DEG C/h, copper-steel composite plate is heated to 480 DEG C, and is incubated 30min.
Four, gradient heat preservation method, prepare two pieces and be of a size of 30 × 920 × 1820mm and 30 × 940 × 1840mm heat-preservation cotton, by below laid for the heat-preservation cotton of 30 × 920 × 1820mm, 30 × 940 × 1840mm is used for capping, will be used for the heat-preservation cotton of capping at the area needing the reserved 80 × 260mm in the position of repair welding.
Five, bead-welding technology, by clean for the processing of prime coat surface scale, uses φ 2.4ERNi-1 welding wire, adopts 200A electric current in three edge boxing one week of groove; Then adopt the built-up welding in layer of 280-300A electric current with φ 3.0ERCu welding wire, period adopts ultrasonic impact rifle after often welding one deck, impacts once.
Embodiment 2
Material TU2+Q235B, size (10+20) × 2100 × 6000mm; Do not fit into the circle of φ 50mm, position is do not fit in middle part.
One, bevel design processing, adopt abrasive machine, along the line drawn in advance, be cut to carbon steel layer downwards, the copper coin of non-joint place is removed, with 60# emery wheel, 2-2.5mm is removed in the processing of Q235B plate, wherein adopt stainless steel bistrique to polish at circular faying face place, the circumferential location of coating is polished to the groove of 120 °.
Two, transition zone bead-welding technology, uses the mode of argon arc welding, and adopt φ 2.4ERNiCu-7 welding wire, ground floor 130A electric current, second layer 120A electric current carries out welding, after built-up welding completes, polishes concordant with faying face.
Three, overall heating process, adopts the programming rate of 100 DEG C/h, copper-steel composite plate is heated to 600 DEG C, and is incubated 20min.
Four, gradient heat preservation method, prepare two pieces and be of a size of 30 × 2120 × 6020mm and 30 × 2140 × 6040mm heat-preservation cotton, by below laid for the heat-preservation cotton of 30 × 2120 × 6020mm, 30 × 2140 × 6040mm is used for capping, by the circular hole that the heat-preservation cotton being used for capping is needing the position of repair welding to reserve φ 60mm.
Five, bead-welding technology, by clean for the processing of prime coat surface scale, use φ 2.4ERNiCu-7 welding wire, adopt 200A electric current in three edge boxing one week of groove, adopt the built-up welding in layer of 260-300A electric current afterwards, period adopts ultrasonic impact rifle after often welding one deck, impacts once.
Adopt ultrasonic examination without layering after repairing; Use penetrant inspection, surperficial flawless; Defect repair rate 100%.
Claims (6)
1. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material and defect, is characterized in that comprising bevel design processing, the even built-up welding of transition zone, overall heating process, gradient insulation, coating built-up welding and ultrasonic wave process.
2. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material according to claim 1 and defect, bevel design processing described in its feature the layers of copper of defect area compound is processed to the groove of 120 ° ± 1 °, and carbon steel layer is removed to 2-2.5mm downwards at compound position and processed smooth.
3. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material according to claim 1 and defect, the transition zone built-up welding described in its feature is selected
the welding wire of ERNi-1 or ERNiCu-7, electric current adopts 90-130A, two-layer in the built-up welding of steel side, concordant with copper steel faying face after welding processing.
4. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material according to claim 1 and defect, overall heating process described in its feature is put in heating furnace by copper-steel composite plate, according to different thicknesss of slab, entirety is heated to 350-600 DEG C, insulation 30min.
5. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material according to claim 1 and defect, described in its feature gradient uniformity insulation be the copper-steel composite plate of heating is taken out rapidly be placed on thick 30mm laid in advance heat-preservation cotton on, covering rapidly one layer of heat preservation cotton on copper-steel composite plate surface, needing the seat of built-up welding, heat-preservation cotton being removed.
6. the restorative procedure of large area heavy thickness TU2 copper/steel explosive composite material according to claim 1 and defect, the coating built-up welding described in its feature and ultrasonic wave process use
the welding wire of ERNi-1 or ERNiCu-7 between copper and prime coat, weld one week, use instead afterwards
eRCu welding wire in the built-up welding of prime coat last layer one deck.Every built-up welding one deck copper will impact once with spherical ultrasonic impact rifle, and then scale removal of polishing carries out the built-up welding of lower one deck, built-up welding reinforcement stops built-up welding after exceeding plate face 2-3mm, 2 to 3 times are hit at the spherical ultrasonic impact rifle primary drying of built-up welding layers of copper, afterwards repair welding district heat-preservation cotton is covered with, makes it naturally cool to room temperature.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041268A (en) * | 2016-06-28 | 2016-10-26 | 江苏科技大学 | Layered ultrasonic impact treatment method capable of optimizing structure and performance of weld |
| CN106077912A (en) * | 2016-06-30 | 2016-11-09 | 洛阳双瑞金属复合材料有限公司 | A kind of complex brass clad steel plate is not associated with district's repair method |
| CN106270924A (en) * | 2016-09-20 | 2017-01-04 | 上海电气核电设备有限公司 | Prevent dividing plate that overlay cladding tears attachment structure with housing and attaching method thereof |
| CN106270937A (en) * | 2016-09-20 | 2017-01-04 | 上海电气核电设备有限公司 | A kind of overlay cladding repair method |
| CN108838573A (en) * | 2018-06-27 | 2018-11-20 | 中广核工程有限公司 | Nuclear power pressure vessel low-alloy steel adds the compound repair method of stainless steel and system |
| CN109778180A (en) * | 2019-02-28 | 2019-05-21 | 上海乾岳投资管理有限公司 | A kind of laser cladding method that control infiltrated cracks by copper generates |
| CN113042853A (en) * | 2021-03-03 | 2021-06-29 | 中国船舶重工集团公司第七二五研究所 | Method for repairing non-composite area of pure copper T2-steel composite board |
| CN113305503A (en) * | 2021-05-31 | 2021-08-27 | 中国船舶重工集团公司第七二五研究所 | Method for repairing uncombined area of cupronickel BFe 10-1-1-steel composite board |
| CN114147385A (en) * | 2021-11-26 | 2022-03-08 | 西安理工大学 | Copper-steel clad plate CMT fusion welding butt welding wire and preparation and welding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106041268A (en) * | 2016-06-28 | 2016-10-26 | 江苏科技大学 | Layered ultrasonic impact treatment method capable of optimizing structure and performance of weld |
| CN106077912A (en) * | 2016-06-30 | 2016-11-09 | 洛阳双瑞金属复合材料有限公司 | A kind of complex brass clad steel plate is not associated with district's repair method |
| CN106077912B (en) * | 2016-06-30 | 2018-10-23 | 洛阳双瑞金属复合材料有限公司 | A kind of unbonded area's repair method of complex brass clad steel plate |
| CN106270924A (en) * | 2016-09-20 | 2017-01-04 | 上海电气核电设备有限公司 | Prevent dividing plate that overlay cladding tears attachment structure with housing and attaching method thereof |
| CN106270937A (en) * | 2016-09-20 | 2017-01-04 | 上海电气核电设备有限公司 | A kind of overlay cladding repair method |
| CN106270924B (en) * | 2016-09-20 | 2018-05-04 | 上海电气核电设备有限公司 | Prevent the connection method of the partition plate and housing of overlay cladding tear |
| CN108838573A (en) * | 2018-06-27 | 2018-11-20 | 中广核工程有限公司 | Nuclear power pressure vessel low-alloy steel adds the compound repair method of stainless steel and system |
| CN108838573B (en) * | 2018-06-27 | 2020-11-13 | 中广核工程有限公司 | Low-alloy steel and stainless steel composite repair welding method and system for nuclear power pressure vessel |
| CN109778180A (en) * | 2019-02-28 | 2019-05-21 | 上海乾岳投资管理有限公司 | A kind of laser cladding method that control infiltrated cracks by copper generates |
| CN109778180B (en) * | 2019-02-28 | 2020-09-29 | 上海乾岳投资管理有限公司 | Laser cladding method for controlling generation of copper penetration cracks |
| CN113042853A (en) * | 2021-03-03 | 2021-06-29 | 中国船舶重工集团公司第七二五研究所 | Method for repairing non-composite area of pure copper T2-steel composite board |
| CN113305503A (en) * | 2021-05-31 | 2021-08-27 | 中国船舶重工集团公司第七二五研究所 | Method for repairing uncombined area of cupronickel BFe 10-1-1-steel composite board |
| CN114147385A (en) * | 2021-11-26 | 2022-03-08 | 西安理工大学 | Copper-steel clad plate CMT fusion welding butt welding wire and preparation and welding method |
| CN114147385B (en) * | 2021-11-26 | 2023-03-14 | 西安理工大学 | Welding wire for CMT fusion welding butt joint of copper-steel composite plate and preparation and welding method |
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Address after: 211803 No. three Lin and Nan Road, Star Industrial Park, Pukou District, Nanjing, Jiangsu Patentee after: Jiangsu run state new material Group Co., Ltd. Address before: 211803 No. three Lin and Nan Road, Star Industrial Park, Pukou District, Nanjing, Jiangsu Patentee before: Nanjing Runbang Metal Clad Material Co., Ltd. |
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Denomination of invention: Repair method of large area and thickness TU2 copper / steel explosive composite and its defects Effective date of registration: 20210225 Granted publication date: 20170125 Pledgee: Bank of Jiangsu Co., Ltd. Nanjing Jiangbei new area sub branch Pledgor: JIANGSU RUNBANG NEW MATERIAL GROUP Co.,Ltd. Registration number: Y2021980001306 |
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