Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
  • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
  • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
  • B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12736—Al-base component
  • Y10T428/12764—Next to Al-base component

Definitions

• the invention relates to a method for manufacturing circuit aluminum panels.
• OSF one side flat
• These panels are made from two aluminum or alloy sheets of aluminum, one of which is coated, on the areas intended to become the circuit integrated, ink intended to prevent welding between the two sheets. Both sheets are then welded by co-laminating. Unwelded areas are then inflated hydraulically or pneumatically to form a circuit, the essential part of which is used as a heat exchanger, and in particular as a heating circuit cooling of household refrigerators.
• Patent FR 1 347 949 (Olin Mathieson) describes the principle of circuit panels integrated single-sided and offers to realize them from two resistance sheets different mechanics, one in 1100 alloy and the other in 1100 alloy with addition 0.12% zirconium.
• Patent FR 2561368 (Cegedur Pechiney) discloses a manufacturing process in continuous single-sided roll-bond panels from two aluminum sheets or aluminum alloys.
• European patent EP 0 703 427 Showa Aluminum proposes a process which aims to reduce the number of defects during inflation (rupture of channels or local absence of deformation).
• the existing production lines do not not allow the manufacture of panels, and in particular single-sided panels, strong mechanical characteristics. Furthermore, it is desirable to guarantee that the panels formed, before inflation, are free from unacceptable defects.
• the object of the invention is to provide a continuous manufacturing process for panels roll-bond, which is suitable for the manufacture of single-sided panels with strong mechanical characteristics and which allows, both for type panels single-sided and double-sided, early detection of faulty panels.
• the invention relates to an improved manufacturing method for circuit panels. integrated in a two-sided or single-sided aluminum alloy.
• strip A the strip of aluminum or alloy aluminum to which the anti-welding ink is applied
• strip B the strip in aluminum or aluminum alloy which is applied to strip A
• strip composite the strip formed from strips A and B
• panels the panels formed by cutting the composite strip.
• the bands A and B can be fed by two unwinders.
• each of the two unwinders is provided with a mobile splicing device, allowing each band A and B to be changed without interrupting the running of the strips in the production line.
• the application of the anti-welding ink on the strip A can be carried out by screen printing techniques known to those skilled in the art. Quality control of this screen printing can be done by a qualified operator.
• the quality of this application is preferably controlled by a automatic machine vision device capable of detecting faults unacceptable and identify the position of the faulty circuits on strip A. This device acquires the printed image and compares it to a reference deemed perfect. This system then eliminates the panels on the circuit before inflating which an unacceptable fault has been detected.
• any continuous oven known to those skilled in the art loom can be used, for example a direct flame oven.
• this oven allows temperature regulation so as to keep the temperature constant across the width of bands A and B in a interval between ⁇ 10 ° C maximum, preferably between ⁇ 7 ° C, and even more preferably in an interval between ⁇ 5 ° C.
• band B on band A can be done in a traditional rolling mill and preferably in a quarto rolling mill.
• the two cylinders which come into contact with the strip are brushed with during rolling.
• the brushing device disclosed in the French patent FR 2568495 is suitable for this purpose.
• any continuous oven known to man of the trade can be used.
• this oven allows temperature regulation to keep the temperature constant over the entire width of the strip in an interval between ⁇ 10 ° C, from preferably between ⁇ 7 ° C, and even more preferably within a range between ⁇ 5 ° C.
• the cooling of the composite strip can be done by spraying any refrigerant, liquid or gaseous, and preferably by spraying with water.
• this leveling can be done for example mechanically by more or less nesting significant band between two layers of metal rollers.
• the cutting of the composite strip into panels can be done using a shears fixed. In this case, it is necessary to add a tape accumulator which allows cut without interrupting the continuous running of the strip.
• a flying shear is used, which makes superfluous the strip accumulator capable of inducing defects on the composite strip.
• the panels are then eliminated whose circuits were detected as defective during the check, before transferring panels whose quality has been deemed acceptable in the inflation press.
• This transfer is advantageously done by loading the panels in an elevator.
• the panels are transferred using a robot, for example by a robot to six axes, in the press.
• the inflation press has several stages, preferably at least four stages, and even more preferably at least eight stages.
• the circuits are inflated using a pressurized fluid through a needle which is introduced into the inflation channel, between the two faces of each sign.
• the panels in the press can be inflated one after the other or, preferably, simultaneously.
• this press is of a construction such that it allows the inflation of single-sided panels, that is to say of panels comprising circuits inflated on one side only, the other face being flat, and of two-sided panels, that is to say of panels comprising inflated circuits on both sides.
• a back pressure is applied to the face opposite the planar face, according to the techniques known to those skilled in the art and described, for example, in the FR patent 2561368 cited above.
• the press panels exit advantageously by a robot, by example a six-axis robot, which unloads the inflated panels from the press to a descender, which transfers the panels to a stacker making it possible to constitute stacks of panels ready to be packaged for shipment.
• a robot by example a six-axis robot, which unloads the inflated panels from the press to a descender, which transfers the panels to a stacker making it possible to constitute stacks of panels ready to be packaged for shipment.
• the bands A and B are centered and composite tape. For example, centering before entering the strip in the grip of the rolling mill is useful.
• the invention as described above can be advantageously applied to the manufacture of all roll-bond panels for existing refrigerating appliances or for other heat exchange or transfer applications.
• Type A strip means the strip or strips of aluminum or aluminum alloy on which (or which) is applied the anti-welding ink.
• band of type B the strip (s) of aluminum or aluminum alloy which will be applied on the type A strip (s), and which do not include screen printing.
• a roll-bond panel made up of three superimposed strips comprising two superimposed circuits consists of two type A bands and a band of type B.
• Composite strip means the strip formed from the strips of type A and type B, and by “panels” the panels formed by cutting the composite tape.
• the supply of the chain is done by a mobile splicing device allowing to change each of bands A and B without interrupting the scrolling of bands in the production line.
• This cart is equipped with mobile welders without input of metal to make the junction between the strips from two coils of metal.
• the stripping of the strips A and B is done by a motorized roller stripper.
• the surfaces A and B intended to come into contact are brushed by motorized metal brushes.
• the stencil screen printing is done in a closed enclosure under pressure, allowing minimize dust deposits and the appearance of defects on the belt. Screens whose fabric structure and thread density are adjusted according to the print desired are used; screen printing is carried out by known techniques of the skilled person.
• the supply of non-stick ink on the canvas is automatic and allows a good homogeneity of the quantity of ink.
• the changing screens when changing series is done without stopping the line and is semi-automated. After screen printing, an additional ink stain is added to band A at the end of the patterns; said spot serves as marking during the cutting the composite strip into panels.
• the quality of screen printing is controlled by an industrial vision device, fitted with line cameras. All patterns are acquired, processed and compared to a reference model image. This device makes it possible to check the functional dimensions patterns and spot any flaws (such as unnecessary spots, lack ink or imprecise edges). The position of the defective patterns is identified by the control computer to allow the panels which have these defective patterns before the inflation step.
• the preheating oven is a pass-through gas oven. It is made up of two parts allowing to heat successively band B and band A. Its power is 1800 kW.
• the temperature of the strip in the oven is typically of the order of 400 ° C, but can go up to 500 ° C, depending on the alloys used.
• the oven has two heating zones twice. The temperature is kept constant à by a regulation system at ⁇ 7 ° C.
• the rolling mill used is a quarto rolling mill making it possible to achieve rolling of around 1400 tonnes, with the possibility of variable balancing.
• the annealing furnace is a 1220 kW pass-through gas furnace. Temperature of the composite strip in the furnace is typically of the order of 400 ° C. but can go up to 500 ° C, depending on the alloys used.
• the oven has four zones of heating. The temperature is kept constant by a regulation system at ⁇ 7 ° C.
• the leveling of the composite strip is done by a leveler comprising 17 rollers variable nesting, known to those skilled in the art.
• An ultrasonic sensor allows the detection of the ink stain deposited during the serigraphy and triggers the cutting of the composite strip into panels by a flying shears.
• the panels feed an elevator and are loaded in batches of eight in the inflation press using the six-axis robot.
• the inflation press is a 2500-ton hydraulic press allowing the simultaneous inflation of the panels on all floors. Scheduled cycles allow online inflation of two-sided and single-sided panels. For panels single sided, back pressure is applied on all stages in addition to pressure inflation. The inflation cycles are controlled by a computer. The press is equipped with leak detection devices during inflation and allows elimination defective panels thus identified.
• the panels whose channels have been inflated are discharged from the press by a second six-axis robot on a descender.
• the process parameters are adjusted in function of the scrolling speed measured at several points on the line.
• the speed of bands A and B can reach 15m / min.
• the speed of the composite tape can reach 30 m / min, for a rolling ratio of 2.
• the different settings for the line are managed automatically from a product database.
• the width of the strips used can reach 700 mm.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Metal Rolling (AREA)
• Laminated Bodies (AREA)
• Insulated Metal Substrates For Printed Circuits (AREA)
• Parts Printed On Printed Circuit Boards (AREA)
• Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
• Liquid Crystal (AREA)
• Continuous Casting (AREA)
• Design And Manufacture Of Integrated Circuits (AREA)
• Semiconductor Integrated Circuits (AREA)

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Related Parent Applications (1)

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Citations (5)

Family Cites Families (13)

• 2000
  • 2000-12-11 FR FR0016082A patent/FR2817954B1/fr not_active Expired - Fee Related
• 2001
  • 2001-07-12 UA UA2003076468A patent/UA80528C2/uk unknown
  • 2001-12-05 EG EG20011302A patent/EG23026A/xx active
  • 2001-12-07 AU AU2002217215A patent/AU2002217215A1/en not_active Abandoned
  • 2001-12-07 US US10/399,776 patent/US7226516B2/en not_active Expired - Fee Related
  • 2001-12-07 PL PL01362112A patent/PL362112A1/xx unknown
  • 2001-12-07 RU RU2003121023/02A patent/RU2281828C2/ru not_active IP Right Cessation
  • 2001-12-07 ES ES01270391T patent/ES2204356T3/es not_active Expired - Lifetime
  • 2001-12-07 WO PCT/FR2001/003886 patent/WO2002047841A1/fr active IP Right Grant
  • 2001-12-07 HU HU0303392A patent/HU223877B1/hu not_active IP Right Cessation
  • 2001-12-07 BR BR0116059-1A patent/BR0116059A/pt not_active Application Discontinuation
  • 2001-12-07 CN CNB018203345A patent/CN1247343C/zh not_active Expired - Fee Related
  • 2001-12-07 TR TR2004/01899T patent/TR200401899T4/xx unknown
  • 2001-12-07 EP EP03024826A patent/EP1398096A1/fr not_active Withdrawn
  • 2001-12-07 MX MXPA03005038A patent/MXPA03005038A/es unknown
  • 2001-12-07 EP EP01270391A patent/EP1353767B1/fr not_active Expired - Lifetime
  • 2001-12-07 KR KR10-2003-7007681A patent/KR20030087618A/ko not_active Application Discontinuation
  • 2001-12-07 DE DE60103667T patent/DE60103667T2/de not_active Expired - Fee Related
  • 2001-12-07 CA CA002431307A patent/CA2431307A1/fr not_active Abandoned
  • 2001-12-07 JP JP2002549402A patent/JP4054372B2/ja not_active Expired - Fee Related
  • 2001-12-07 AT AT01270391T patent/ATE268233T1/de not_active IP Right Cessation
• 2003
  • 2003-04-24 ZA ZA200303206A patent/ZA200303206B/en unknown
• 2007
  • 2007-06-08 JP JP2007152581A patent/JP2008001987A/ja active Pending

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