EP1713601A1 - Materiau plaque, methode pour fabriquer ledit materiau et appareil pour fabriquer ledit materiau plaque - Google Patents

Materiau plaque, methode pour fabriquer ledit materiau et appareil pour fabriquer ledit materiau plaque

Info

Publication number
EP1713601A1
EP1713601A1 EP05710378A EP05710378A EP1713601A1 EP 1713601 A1 EP1713601 A1 EP 1713601A1 EP 05710378 A EP05710378 A EP 05710378A EP 05710378 A EP05710378 A EP 05710378A EP 1713601 A1 EP1713601 A1 EP 1713601A1
Authority
EP
European Patent Office
Prior art keywords
mass
skin
manufacturing
clad
contact
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.)
Withdrawn
Application number
EP05710378A
Other languages
German (de)
English (en)
Other versions
EP1713601A4 (fr
Inventor
Tomoaki Oyama Office Showa Denko K. K. YAMANOI
Kazuhiko Oyama Office Showa Denko K. K. MINAMI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Publication of EP1713601A1 publication Critical patent/EP1713601A1/fr
Publication of EP1713601A4 publication Critical patent/EP1713601A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/383—Cladded or coated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys

Definitions

  • the present invention relates to a clad material with skin materials laminated on both sides of a core material for giving, for example, brazing performance and. corrosion resistance, especially, a clad material excellent in high-temperature strength, a method for manufacturing such clad, material, and an apparatus for manufacturing such clad material-.
  • heat exchangers represented by radiators and heater cores, which use water as a principal component of refrigerant
  • heat exchangers represented by condensers and evaporators which use fleon gas as refrigerant
  • heat exchangers represented by gas coolers (evaporators) which use C0 2 as refrigerant.
  • a cladmaterial consisting of an aluminum alloy core and an aluminum alloy skin material which gives brazing performance and corrosion prevention performance to the surface of the core and having sufficient strength even after brazing has been used.
  • a pre-heated ingot is hot-rolled and then the surface thereof is scraped to obtain a core material having a thickness of 250 mm to 400 mm.
  • the core material and a skin material having a thickness of 10 to 100 mm are placed one onanotherandthentemporarilyfixedwitheachother. Thereafter, the temporarily fixed members are subjected to hot-rolling, cold-rolling and, if necessary, intermediate annealing..
  • As a material of the aforementioned aluminum alloy core material there is an Al-Mn series alloy plate improved in high temperature strength by manufacturing under predetermined heat-treatingconditions androllingconditions.
  • Al-Mn series alloy plates are excellent in characteristics as elementary substance, they can give simultaneously neither brazing performance nor corrosion prevention performance (Japanese UnexaminedLaid-openPatent PublicationNo.2000-104149 andJapanese Unexamined Laid-open Patent Publication No. 2002-241910).
  • various methods utilizing continuous casting of core materials have been proposed (Japanese Unexamined Laid-open Patent Publication No. Hll-226699, Japanese Laid-open Patent Publication No. H8-509265 and Japanese Laid-open Patent Publication No. 2002-248599).
  • Japanese Unexamined Laid-open Patent Publication No. Hll-226699 discloses a method for continuously manufacturing a clad material inwhicha skinmaterial is pressure-bondedto acorematerial which is being sent out from a cast rollingmillwithpressure-bonding rolls disposed at the vicinity of the outlet side of the rolling mill. Also disclosed in Figs, lie and llf of Japanese Laid-open Patent PublicationNo. H8-509265 is amethod for continuouslycasting a core material and cladding of the core material and a skin material withpressure-bondingrolls disposedat the outlet side of the cooling rollers of the cast rolling mill. Onthe otherhand, disclosedinFigs .11a, lib and lie of Japanese Laid-open Patent Publication No.
  • H8-509265 is a method for manufacturing a clad material in which casting of a core material and pressure-bonding of the core material and the skin material are simultaneously performed by supplying the skin material at the inlet side of molten alloy with cooling rollers of the cast rolling apparatus .
  • a method for supplying a skin material at the inlet side of cooling rollers for casting a core material when manufacturing a cladmaterial in which the width of the skin material is wider than that of the core material and the skin material is embedded in the core material is a method for supplying a skin material at the inlet side of cooling rollers for casting a core material when manufacturing a cladmaterial in which the width of the skin material is wider than that of the core material and the skin material is embedded in the core material.
  • the preferred embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art .
  • the preferred embodiments of the present invention can significantly improve upon existing methods and/or apparatuses .
  • the present invention was made in view of the aforementioned problems, and aims to provide a method for manufacturing a clad material capable of keeping the surface property of cooling rollers constant while keeping high cooling rate of a core material, restraining deterioration of adhesiveness of a skin layer due to contamination of non-metallic inclusion such as an oxide film formed at the interface of the skin material and the core material, and restraining occurrence of thickness variation of the skin material after the cladding and/or breakage of the skin material during the manufacturing process. Furthermore, the present invention also aims to provide a clad material manufactured by the aforementioned method and an apparatus for manufacturing a clad material for executing the aforementioned method.
  • a method for manufacturing a clad material comprising the steps of: continuously supplying molten metal into a gap between a pair of cooling rollers to cast a core material; and cladding skin materials on both surfaces of the core material with hot rolling by continuously supplying the skin materials on peripheral surfaces of the cooling rollers so that the skin materials prevent direct contact between the cooling rollers and the molten metal, wherein the skin materials are supplied so as to come into contact with the peripheral surfaces of the cooling rollers , and wherein a contact distance (LI) from a contact starting point
  • PI where the skin material begins to come into contact with the cooling roller to a meeting point (P2 ) where the skin material begins to come into contact with the molten metal is set to 100 times or more of a thickness (tl) of the skin material.
  • P2 a meeting point
  • tl a thickness of the skin material.
  • a clad material in which skin materials are clad on both surfaces of acorematerial wherein the cladmaterial ismanufactured by the steps of continuously supplyingmolten metal into a gap between a pair of cooling rollers to cast a core material, and cladding skin materials on both surfaces of the core material with hot rolling by continuously supplying the skin materials on peripheral surfaces of the cooling rollers so that the skin materials prevent direct contact between the cooling rollers and the molten metal, wherein the skin materials are supplied so as to come into contact with the peripheral surfaces of the cooling rollers , andwherein a contact distance (LI) from a contact starting point (PI) where the skin material begins to come into contact with the cooling roller to a meeting point (P2) where the skin material begins to come into contact with themoltenmetal is set to 100 times ormore of a thickness (tl) of the skin material.
  • LI contact distance
  • An apparatus for manufacturing a clad material comprising: apair of cooling rollers for continuously castingmoltenmetal passing through a gap formed between the cooling rollers; amoltenmetal supplying portion for supplying themoltenmetal to become a core material into the gap; and a skinmaterial supplying portion for supplying a skinmaterial on a peripheral surface of the cooling roller and making the skin material come into contact with the peripheral surface of the cooling roller before the skin material joins the molten metal, wherein the cooling rolls are rotated while continuously supplying the molten metal and the skin material to the cooling rolls to therebycontinuouslycladthe skinmaterials to both surfaces of the core material.
  • the manufacturing method of the clad material of the invention as recited in the aforementioned Item (1), since the skin materials are joined to the molten metal in a state in which the skin material is cooled, the molten metal is solidified quickly by being cooled by the cooling rollers. Therefore, a core material having high hardness can be cast and the skin materials can be pressure-bonded to both surfaces of the core material. Since the skin material is cooled in advance, melting and/or fusing of the skinmaterial due to theheat of themoltenmetalMcanbeprevented, and a clad material can be manufactured efficie'ntly without reducing the cooling rate of the core material.
  • the aforementioned skin materials are pressure-bonded during the solidification process of the core material, high adhesion can be attained. Furthermore, since the cooling rollers and the molten metal are intercepted by the skin material, the alteration and deterioration of the roll surface property due to adhesion of the molten metal can be prevented. According to the invention as recited in the aforementioned Item ( 2 ) , the aforementioned cladmaterialwhich consists of aluminum or its alloy can be manufactured. According to the invention as recited in the aforementioned Item (3), tension control of the skin material can be performed smoothly, and sufficient cooling rate of the core material can be secured.
  • an aluminum brazing clad material with brazing material clad on the surface can be manufactured.
  • the aluminum brazing clad material excellent in especially brazing performance can be manufactured.
  • the aluminum brazing clad material excellent in corrosion resistance in which a sacrificial corrosion layer is formed on the surface can be manufactured.
  • the aluminum brazing cladmaterial excellent in especially corrosion resistance can be manufactured.
  • molten metal can be supplied stably and it is possible to secure the heat releasing capacity from the cooling rollers .
  • an aluminum brazing clad material excellent in strength even at high temperature and excellent in corrosion resistance can be manufactured.
  • the aluminum material excellent in especially high temperature strength can be manufactured.
  • the clad material having a prescribed thickness can be manufactured.
  • the clad material according to the invention as recited in the aforementioned Item (12) is excellent in adhesiveness property between the skin materials and the core material, or is a useful clad material to which various characteristics, such as brazing performance, corrosion resistance and strength, are further added. Furthermore, the clad material is excellent in workability. According to the invention as recited in the aforementioned Item (13), a clad material having a prescribed thickness can be obtained. According to the invention as recited in the aforementioned Item (14), a clad material especially excellent in strength can be obtained. According to the invention as recited in the aforementioned Item (15) , the clad material is useful as a heat exchanger structure component material.
  • the manufacturing method of the present invention is executed and a clad material can be manufactured efficiently.
  • Fig. 1 is a schematic view showing an apparatus structure for executing a method for manufacturing a clad material according to the present invention.
  • Fig. 2 is a perspective view showing a brazed article used in a brazing test.
  • the reference numeral 2a and 2b denote a pair of cooling rollers disposedat a certain distance
  • the reference numeral 3 denotes a nozzle which injects molten metal M supplied from a molten-metal preparation portion, such as a melting furnace and a tundish (not shown) , into the gap between the aforementionedcooling rollers 2a and 2b.
  • the aforementioned nozzle 3 sets the meeting point P2 of the molten metal M and the skin material 10a and 10b by the openingwidth and the set position.
  • the aforementionednozzle 3 demonstrates effective roles for preventing melt breakage of the skinmaterialandholdingthecladratio (skinmaterial / corematerial / skin material) constant.
  • the reference numeral 4a (4b) denotes a holding roll for holding down the skin material 10a (10b) continuously suppliedbyunwinding the skinmaterial coil (not shown) toward the cooling roller 2a ( 2b) .
  • the reference numeral 11 denotes a plate-shaped core material made of cast molten metal M
  • the reference numeral 12 denotes a three-layered clad material in which the skin materials 10a and 10b are clad on both surfaces of the aforementioned core material 11.
  • the skin material 10a (10b) when supplying the skinmaterial 10a (10b) to the cooling roller 2a (2b) , the skin material 10a (10b) is cooled by coming into contact with the peripheral surface of the cooling roller 2a (2b) before joining the molten metal M, and therefore the skin material 10a (10b) joins the molten metal M in a cooled state .
  • themoltenmetalMsuppliedto the gapbetween the cooling rollers 2a and 2b is quickly solidified by being cooled by the cooling roller 2a (2b) even via the skin material 10a (10b) , and the skin material 10a (10b) is pressure-bonded and clad on both surfaces of the core material 11.
  • the skin material 10a (10b) is to be pressure-bonded to the core material 11 during the solidification process of the core material 11, contamination, such as an oxide film, to the interface between the skin material 10a (10b) and the core material 11 can be prevented, resulting in excellent adhesiveness of the skin material 10a (10b) to the core material 11. Since the aforementioned skin material 10a (10b) is cooled beforehand, the melting and fusing of the skin material due to the heat of the molten metal M can be prevented, and therefore the clad material 12 can be manufactured efficiently without reducing the cooling rate of the core material 11.
  • themoltenmetalMand the coolingroller 2a ( 2b) are intercepted by the aforementioned skin material 10a (10b"), alteration and/or deterioration of the roll surface property due to the adhesion of the molten metal M can be prevented.
  • the contact distance LI of the skin material 10a (10b) along which the aforementioned skin material l ⁇ a(l ⁇ b) is pre-cooled by the cooling roller (2a) 2b namely, the distance from the contact starting point PI where the skinmaterial 10a (10b) comes into contact with the cooling roller 2a (2b) to the meeting point P2 where the skin material 10a (10b) comes into contact with the molten metal M, it is necessary to set such that the contact distance LI is set to a length of 100 times or more of the thickness tl of the skin material 10a (10b) in order to fully cool the skin material 10a (10b) and to acquire the aforementioned effects.
  • the contact distance LI is set to a length of 200 times to 100,000 times of the thickness tl of the skin material 10a (10b). It is possible to attain the aforementioned manufacturing conditions by setting the contact distance LI so that the ratio of the contact distance to the thickness of the skin material (Ll/tl) falls within the aforementioned range. For example, by changing the diameter of the cooling rollers 2a (2b) and the contact starting point PI where the skin material 10a ( 10b) begins to come into contact with the cooling roller 2a (2b) so as to meet the aforementioned range, the range of the roller with which the skin material 10a (10b) is in contact, namely, the contact distance LI, canbe adjusted.
  • the contact distance LI is represented by a center angle as seen from the center of the cooling roller 2a (2b)
  • the range of the center angle so as to fall within the range of from 10 to 270° . If it falls within this range, it becomes easy to arrange the devices, and the skin material can be stably wound on the cooling roller 2a (2b) . It is more preferable to adjust the range so as to fall within the range of from 150 to 180° .
  • the thickness tl of the aforementioned skin material 10a (10b) is 20 to 400 ⁇ m. If it is less than 20 ⁇ m, it becomes difficult to control the tension of the unwinding roll, which in turn makes it difficult to perform continuation operation due to the possible breakage of the skin material.
  • the preferable thickness tl of the skin material 10a (10b) is 20 to 200 ⁇ m.
  • the thickness of the skinmaterial 10a (10b) is not required to be the same in both sides, and the skinmaterials different in thickness canbe employed. Accordingly, the contact distances LI of both skin materials can also be different with each other.
  • the thickness t2 of the core material 11 after the hot cladding is preferably 0.5 to 8 mm.
  • the present invention employs continuous casting using a pair of cooling rollers 2a and 2b, if the plate thickness t2 after the cladding is less than 0.5 mm, the roll gap is too narrow to stably supply molten metal M. On the other hand, if the thickness exceeds 8 mm, the heat releasing capacity through the cooling roller 2a (2b) becomes insu ficient, which makes it difficult to secure sufficient cooling rate of the core material.
  • the preferable thickness t2 of the core material 11 is 0.8 to 6 mm.
  • the number of revolutions of the cooling rollers As for the aforementioned cooling rollers , the number of revolutions of the cooling rollers , and the materials of the cooling rollers , it is possible to employ conventionallyknown ones , provided that cooling conditions of materials are sufficiently met under the aforementioned Ll/tl condition.
  • the diameter of the roller is preferably 100 to 1,000 mm since such a cooling roll can be easily manufactured or obtained and therefore the entire apparatus can be constituted at lower cost .
  • the number of revolutions of the cooling roller is preferably 1 to 200 m/min. , more preferably 5 to 150 m/min. in circumferential velocity.
  • the materials of the cooling rollers aluminum or its alloy, copper or its alloy, and iron or its alloy can be exemplified.
  • the materials of the core material 11 and the skin material 10a and 10b are metal, and aluminum and its alloy can be exemplified as such metal.
  • the clad material made of aluminum or its alloy can be used as component material which constitutes, for example, fluid passages, tubes, heat releasing fins of heat exchangers .
  • the core material and the skin material made of aluminum or its alloy the following material can be recommended.
  • the skin material it is preferable to use Al-Si series alloy which functions as brazing material and Al-Zn series alloy which gives corrosion resistance.
  • alloy consisting of Si: 5 to 15 mass%, Fe: 0.05 to 0.6 mass%, Cu: 0.01 to 0.6 mass%, Mn: 0.01 to 0.8 mass%, Mg: 0.01 to 0.2 mass%,
  • Si is an element which makes the alloy function as brazing material by lowering the melting point of the alloy.
  • the preferable Si content is 6.5 to 11 mass% .
  • Fe is an element to be added to improve the wettability of brazing material, and if the content is less than 0.05 mass%, the effects will become poor. To the contrary, if it exceeds 0.6 mass%, large and rough intermetallic compound will be generated, which gives adverse effects on corrosion resistance.
  • the preferable Fe content is 0.1 to 0.5 mass%.
  • Cu is an element to be added to control the electric potential of the skin material (Al-Si series alloy).
  • the electric potential of the brazingmaterial becomes unnecessarily less noble with respect to the tube. Therefore, Cu is added to restrain an occurrence of preferential corrosion of fillets.
  • the preferable Cu content is 0.02 to 0.5 mass%.
  • Mn is an element to be added to control the electric potential of the brazing material like Cu. If the content exceeds 0.8 mass%, the flowing characteristics of the brazing material may be inhibited.
  • the preferable Mn content is 0.02 to 0.6 mass%.
  • Mg is an element to be added to improve the strength. If it is less than 0.01 mass%, the effects become poor.
  • the preferable Mg content is 0.01 to 0.1 mass%.
  • Ti is an element to be added to control the electric potential of the brazing material.
  • the preferable Ti content is 0.01 to 0.1 mass%.
  • As the aforementioned Al-Zn series alloy it is preferable to use an alloy consisting of Si: 0.05 to 0.6 mass%, Fe: 0.05 to 0.6 mass%, Cu: 0.01 to 0.6 mass%, Mn: 0.01 to 0.8 mass%, Mg: 0.01 to 0.2 mass%, Ti: 0.01 to 0.2 mass%, Zn: 0.35 to 8.5 mass%, and the balance being Al and inevitable impurities.
  • Zn is an element which is dissolved in Al to make the skin material function as a sacrificial corrosion layer of the core material.
  • the preferable Zn content is 0.35 to 6 mass%.
  • Si is an element to be added to improve the strength, and the preferable Si content is 0.1 to 0.5 mass%.
  • Fe is an element to be added to improve the strength, if it exceeds 0.6 mass%, large and rough intermetallic compounds will be generated, which may cause a deterioration of corrosion resistance.
  • the preferable Fe content is 0.1 to 0.5 mass%.
  • Cu is an element to be added to control the electric potential of the skin material .
  • the preferable Cu content is 0.02 to 0.3 mass%.
  • Mn is an element to be added to control the electric potential of the skin material.
  • the preferable Mn content is 0.02 to 0.6 mass%.
  • Mg is an element to be added to improve the strength. If it is less than 0.01 mass%, the effects cannot be obtained. To the contrary, if it exceeds 0.2 mass%, the brazing performance may be remarkably inhibited.
  • the preferable Mg content is 0.01 to 0.1 mass%.
  • Ti is an element to be added to control the electric potential of the skin material.
  • the preferable Ti content is 0.01 to 0.1 mass%.
  • the skin material having the aforementioned composition can be clad on at least one surface of the core material.
  • a skin material to be clad on the other surface of the core material can be a skin mater-Lai having a composition the same as or different from that of the aforementioned skin material.
  • the core material 11 i.e. , the molten metal M
  • alloy consisting of at least one of elements selected from the group consisting of Si: 0.05 to 1.5 mass%, Fe: 0.05 to 2 mass %, Cu: 0.05 to 0.8 mass %, Mn: 0.15 to 2.8 mass%, at least one element selected from the group consisting of Cr: 0.03 to 0.7 mass%, Mg: 0.01 to 0.2 mass%, Ti: 0.01 to 0.3 mass% and Zn : 0.01 to 1.5mass%, andthebalancebeingAlandinevitable impurities.
  • the composition of the aforementioned molten metal M it is preferable to further contain at least one element selected from the group consisting of Zr: 0.15 to 1.5 mass%, V: 0.O3 to 1.5 mass%, and Sc: 0.02 to 0.5 mass%.
  • the reasons of adding each element in the composition of the aforementioned core material are as follows. Si is an element to be added to improve the strength, and the preferable Si content is 0.5 to 1.2 mass% .
  • Fe is an element to be added to improve the strength. If it exceeds 2 mass%, intermetallic compounds, such as an Al-Fe-Mn-Si series, will be generated, which may inhibit corrosion resistance.
  • the preferable Fe content is 0.1 to 0.5 mass%.
  • Cu is an element to be added to control the electric potential, cause the electric potential to be noble than the electric potential of the skin material by adding Cu, and perform corrosion prevention of the core material.
  • the preferable Cu content is 0.05 to 0.6 mass%.
  • Mn is an element to be added to improve the strength, especially to improve the strength at high temperature.
  • the preferable Mn content is 0.5 to 2.5 mass%.
  • Cr is an element to be added to improve the high temperature strength, and the preferable Cr content is 0.05 to 0.3 mass% .
  • Mg is an element which is dissolved in Al to improve the high temperature strength, and the preferable Mg content is 0.05 to 0.2 mass% .
  • Ti makes electric potential noble, and is an element to be added to change the corrosion from pitting corrosion to layer corrosion, and the preferable Ti content is 0.05 to 0.25 mass%.
  • Zn is an element added to control the electric potential, and the preferable Zn content is 0.1 to 1 mass%.
  • Zr, V, and Sc which are added arbitrarily are elements to be added for the purpose of raising the recrystallizing temperature andraising thehightemperature strength.
  • The'preferable Zrcontent is 0.15 to 0.8 mass%.
  • the preferable V content is 0.1 to 1 mass%.
  • the preferable Sc content is 0.04 to 0.5 mass%. It is sufficient that at least one of Zr, V, and Sc is included. However, two or all of three elements can be included.
  • the clad material manufactured from the aluminum or aluminum alloy mentioned above can be formed into a predetermined thickness by further subjecting it to cold rolling if necessary. Moreover, heat treating after the cladding or cold rolling can also be performed arbitrarily.
  • the clad material manufactured by the manufacturing method of the present invention is excellent in high-temperature strength due to the rapid solidification of the core material. Furthermore, since the breakage thereof at the time of machining seldom occurs, the clad material can be a clad material excellent in workability.
  • the clad mate-rial whose average dendrite secondary arm spacing (DAS) is 0.1 to 10 ⁇ m has high-temperature strength. The more preferable average dendrite secondary arm spacing is 0.1 to 8 ⁇ m.
  • the skin material to which brazing performance and corrosion prevention performance was given by the skin material having the prescribed components can be preferably used as a brazing material of heat exchanger components, such as a fluid passage, a tube and a heat re-Leasing fin, to be used in high temperature environment.
  • the skin material can be used as structural components of heat exchangers using C0 2 refrigerant that especially excellent high temperature strength is required.
  • the manufacturing apparatus for clad material according to the present invention is not limited to the manuf cturing apparatus 1 having the structure shown in Fig. 1, but can employ various structures having the same function.
  • the cooling roller in the manufacturing apparatus of the present invention corresponds to the cooling roller 2a and 2b of the manufacturing apparatus 1 of the illustrated embodiment .
  • the molten-metal supplying portion corresponds to a molten-metal preparation portion which is located outside the drawing and arranged in front of the nozzle 3.
  • the skin material feeding portion corresponds to the aforementioned holding roll 4a (4b) and the tension roll for adjusting the tension of the skin material coil located outside the drawing or the tension of the skin member, etc. Examples It should be understood that the following examples do not limit the scope of the invention.
  • the apparatus 1 for manufacturing the clad material as shown in Fig.1 and explained above the three-layered cladmaterial 12 of the present invention was manufactured.
  • the aluminum alloys having the chemical composition shown in Table 1 were used as the alloy constituting a core material and a skin material.
  • Example 1 is an example about the stability of the skin material and the structure of the core material by the heat cladding conditions .
  • a skin material 10a and 10b As a skin material 10a and 10b, an ingot made of the alloys Nos. (a), (c), (f) and (j) shown in Table 1 and manufactured by a semi-continuous casting method was subjected to hot rolling,
  • the molten metal M having the core material compositions (b), (d), (e), (g), (h) , (i) and (k) shown in Table 2 was poured from the above .
  • the target thickness of the core material 11 after the heat roll cladding was set to 4.0 mm.
  • the contact distance LI from the contact starting point PI where the aforementioned skin material 10a (10b) begins to come into contact with the cooling roller 2a (2b) to the meeting point P2 where the skin material begins to come into contact with the molten metal M was set to 100 or 150 times of the thickness tl of skin material 10a (10b) in the Inventive examples Nos. 1 to 10, and set to 50 or 80 times of the thickness tl of the skin material 10a ( 10b) in the comparative examples Nos .11 to 19 , and 21.
  • the pouring temperature of the molten metal M was different depending on the composition of the core material 11, in order to prevent dissolution of the skin material 10a (10b), it was set such that it became higher than the solidification start temperature by about
  • the peripheral speed of the cooling roller 2a (2b) was set to 30 m/min.
  • the skin material breakage and the skin material melting ratio were evaluated by the following standard, and the average dendrite secondary arm spacing (DAS) of the core material was also measured. These results are shown in Table 2.
  • the skin material melting rate was expressed by percentage obtained by performing five-point sampling from the organization observation of the cross-section of the hot rolled clad plate and averaging the five maximum values of the molten portions of the skin material and then dividing the average value by the original thickness of the skin material. Here, it was calculated under the assumption that there was no area reduction of the skin material due to rolling. In the case where the skin material melting rate was 5% or less, it was evaluated as a good article.
  • the core material had the composition (b) and the skin material had the composition (f) shown in Table 1.
  • the ingot manufactured by the semi-continuous casting method was subjected to pre-heating and hot rolling after cutting the surface portion.
  • the skin material having a thickness of 20 mm and the core material having a thickness of 400 mm after the surface cutting of the ingot surface were hot rolled to thereby obtain a hot rolled plate having a total thickness of 5 mm.
  • the hot rolled plate with a thickness of 5 mm was cold-rolled into a thickness
  • the skin material breakage, skin material melting rate, and core material average DAS of the hot rolled plate was evaluated.
  • the skin material breakage and the skin material melting rate were evaluated by the same method as in the aforementioned invention.
  • the core material average DAS was the value of the central portion of the ingot (400mm thickness) having the composition (b) to be used as a core material.
  • Example 2 is an example about brazing performance and corrosion resistance by the skin material components and the skin material.
  • a skin material 10a and 10b an ingot manufactured from the alloys Nos. (m) to (r) in Table 1 by a semi-continuous casting
  • Each of the aforementioned fins (20) had a fin thickness (Ft): 80 ⁇ m, a fin pitch (Fp) : 2.0 mm and a fin height (Fh) : 8 mm. And as shown in Fig. 2, fins 20 and 20 were attached to both surfaces of the aforementioned three-layered clad material 12, and flux was applied thereto. Then, they were subjected to a brazing
  • the junction rate and erosion were investigated.
  • the length that the fin 20 was detached was measured by cutting the fin, and calculated by the following formula: [ 1- (fin detached length) / (the entire fin joining portion) ] xlOO.
  • the calculated result was 80% or more, it was shown as "o.” in the case where the calculated result was less than 80%, it was shown as "x.”
  • the erosion valuation in cases where the erosion depth was less than 20 ⁇ m, it was shown as "o,” and in cases where the erosion depth exceeded 20 ⁇ m, it was shown as "x.”
  • Example 3 is an example about an evaluation of the strength by the core material composition.
  • a skin material 10a and 10b an ingot manufactured from the alloy No. (t) in Table 1 by a semi-continuous casting method
  • the clad materials according to the present invention was superior to the comparative articles in workability. Furthermore, it was also confirmed that the inventive articles not exhibited excellent tensile strength or brazing performance in Tables 2 to 4 were superior to comparative articles in workability.
  • the thickness tl of the skin material 10a (10b) was not changed while the skin materials 10a and 10b were being clad onto the core material 11.
  • the present invention is not limited to it .
  • the present invention also includes the case in which the thickness of the skin material decreases due to the cladding by receiving a slight rolling pressure togetherwith the corematerialwhen the skinmaterials passes through the cooling rollers 2a and 2b.
  • the clad material manufactured by the present invention includes a core material and skin materials clad on the both surfaces of the core material, wherein the composition of the skin material is different from that of the core material.
  • the clad material can be used for manufacturing metallic material to which the aforementioned characteristics were given by cladding brazing material or corrosion resistance material as skin material.
  • the terminology “present invention” or “invention” may be used as a reference to one or more aspect within the present disclosure.
  • the language present invention or invention should not be improperly interpreted as an identification of criticality, should not be improperly interpreted as applying across all aspects or embodiments (i.e., it should be understood that the present invention has a number of aspects and embodiments), and should not be improperly interpreted as limiting the scope of the application or claims .
  • the terminology “embodiment” can be used to describe any aspect, feature, process or step, any combination thereof, and/or anyportion thereof, etc.
  • various embodiments may include overlapping features .
  • abbreviated terminology may be employed: “e.g. " which means “for example; “ and “NB” which means “note well. "

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Continuous Casting (AREA)

Abstract

Une méthode pour fabriquer un matériau revêtu dans laquelle un matériau de base est en fonte et des matériaux stratifiés y sont collés par pression vise à empêcher la dégradation de l’adhésivité du matériau de base et des matériaux stratifiés tout en gardant un taux de refroidissement du matériau de base suffisant, à empêcher les variations d’épaisseur et/ou la fragmentation des matériaux stratifiés au cours du processus de fabrication et à maintenir constante la propriété de surface des cylindres de refroidissement. La méthode pour fabriquer un matériau de placage (11) comprend les étapes d’alimentation constante en métal en fusion (M) en joint ouvert entre une paire de cylindres refroidisseurs (2a) (2b) pour fondre un matériau noyau et plaquer des matériaux stratifiés (10a) (10b) sur les deux surfaces du matériau noyau par laminage à chaud en alimentant en continu les matériaux stratifiés sur les surfaces périphériques des cylindres refroidisseurs de façon que les matériaux stratifiés empêchent le contact direct entre les cylindres refroidisseurs et le métal fondu, où les matériaux stratifiés sont fournis de façon à venir en contact avec les surfaces périphériques des cylindres refroidisseurs, et où une distance de contact (L1) entre un point de contact (P1) de départ où le matériau stratifié commence à entrer en contact avec le cylindre refroidisseur et un point de rencontre (P2) où le matériau stratifié commence à être en contact avec le métal fondu est réglée à 100 fois ou plus l’épaisseur (t1) du matériau stratifié.
EP05710378A 2004-02-12 2005-02-10 Materiau plaque, methode pour fabriquer ledit materiau et appareil pour fabriquer ledit materiau plaque Withdrawn EP1713601A4 (fr)

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JP2004035186 2004-02-12
US54553004P 2004-02-19 2004-02-19
PCT/JP2005/002532 WO2005077569A1 (fr) 2004-02-12 2005-02-10 Matériau plaqué, méthode pour fabriquer ledit matériau et appareil pour fabriquer ledit matériau plaqué

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EP1713601A1 true EP1713601A1 (fr) 2006-10-25
EP1713601A4 EP1713601A4 (fr) 2007-07-18

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US (1) US20070272681A1 (fr)
EP (1) EP1713601A4 (fr)
JP (1) JP2005254329A (fr)
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WO (1) WO2005077569A1 (fr)

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JP2009090218A (ja) * 2007-10-09 2009-04-30 Ihi Corp 金属製担体の製造方法
JP5213519B2 (ja) * 2008-05-13 2013-06-19 昭和電工株式会社 液冷式冷却装置
JP5429858B2 (ja) * 2009-04-21 2014-02-26 株式会社Ｕａｃｊ 熱交換器用アルミニウム合金クラッド材およびその製造方法
JP5302751B2 (ja) * 2009-04-21 2013-10-02 株式会社デンソー 熱交換器用アルミニウム合金クラッド材
US20100330389A1 (en) * 2009-06-25 2010-12-30 Ford Motor Company Skin pass for cladding thin metal sheets
JP5716495B2 (ja) * 2011-03-30 2015-05-13 株式会社Ihi クラッド材製造装置
CN102268578A (zh) * 2011-07-05 2011-12-07 天津锐新昌轻合金股份有限公司 感应电机转子导条的铝合金型材及其制备方法
JP6216964B2 (ja) * 2011-08-09 2017-10-25 三菱アルミニウム株式会社 冷却器用クラッド材および発熱素子用冷却器
CN102534325B (zh) * 2011-12-31 2013-10-16 江苏常铝铝业股份有限公司 一种热交换器用平流多孔管及其制造方法
JP5410579B2 (ja) * 2012-08-09 2014-02-05 株式会社神戸製鋼所 クラッド金属板の製造方法
KR101433359B1 (ko) * 2013-05-20 2014-08-26 한국기계연구원 알루미늄-구리 하이브리드 판재 제조장치
JP6315365B2 (ja) * 2013-07-05 2018-04-25 株式会社Uacj 熱交換器用ブレージングシート及びその製造方法
KR101511632B1 (ko) * 2013-09-05 2015-04-13 한국기계연구원 쌍롤 주조법을 이용한 알루미늄-아연계 합금 판재의 제조방법 및 이에 따라 제조되는 알루미늄-아연계 합금 판재
CN105624479B (zh) * 2015-11-26 2017-10-03 新疆众和股份有限公司 一种焊接用铝硅系合金杆及其生产方法
CN105397427B (zh) * 2015-12-17 2018-01-16 江苏省常熟环通实业有限公司 一种防腐性铝合金高频焊管的生产方法
CN105890433B (zh) * 2016-04-25 2018-03-13 江苏金源腾峰换热设备有限公司 一种双金属空气冷却器用钛合金翅片及其处理工艺
RU2639203C2 (ru) * 2016-05-31 2017-12-20 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ совмещенного непрерывного литья, прокатки и прессования металлической заготовки и устройство для его реализации
JP6886678B2 (ja) * 2016-09-20 2021-06-16 学校法人常翔学園 クラッド材製造方法、クラッド材製造装置、およびクラッド材
CN107755427B (zh) * 2017-09-30 2019-07-23 银邦金属复合材料股份有限公司 一种铝合金复合箔及其制备方法
CN108637198B (zh) * 2018-06-27 2023-09-29 辽宁科技大学 制备双金属全包覆式冷芯复合板材料的方法
CN111391429B (zh) * 2020-03-27 2022-03-11 银邦金属复合材料股份有限公司 铝合金、中冷器管用复合材料及制备方法、中冷器及车辆
JP7265506B2 (ja) * 2020-06-30 2023-04-26 Ｍａアルミニウム株式会社 アルミニウム合金クラッド材、熱交換器用部材および熱交換器の製造方法
CN113996770B (zh) * 2021-11-11 2023-06-09 太原科技大学 一种碳纤维增强金属板轧制成型设备及方法

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WO1995026241A1 (fr) * 1994-03-29 1995-10-05 Reynolds Metals Company Materiau plaque fabrique a l'aide d'un procede de moulage entre deux rouleaux
WO2002090031A2 (fr) * 2001-05-03 2002-11-14 Norsk Hydro Asa Tole a brasage
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JP2005254329A (ja) 2005-09-22
CN1933928A (zh) 2007-03-21
US20070272681A1 (en) 2007-11-29
EP1713601A4 (fr) 2007-07-18
WO2005077569A1 (fr) 2005-08-25

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