Classifications

• • 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
  • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
  • B32B15/015—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
  • B23K20/023—Thermo-compression bonding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
  • B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
  • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K2101/00—Articles made by soldering, welding or cutting
  • B23K2101/04—Tubular or hollow articles
  • B23K2101/06—Tubes
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/922—Static electricity metal bleed-off metallic stock
  • Y10S428/923—Physical dimension
  • Y10S428/924—Composite
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/922—Static electricity metal bleed-off metallic stock
  • Y10S428/923—Physical dimension
  • Y10S428/924—Composite
  • Y10S428/925—Relative dimension specified
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/922—Static electricity metal bleed-off metallic stock
  • Y10S428/9335—Product by special process
  • Y10S428/94—Pressure bonding, e.g. explosive
• • 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.]
  • Y10T428/12687—Pb- and Sn-base components: alternative to or next to each other
  • Y10T428/12694—Pb- and Sn-base components: alternative to or next to each other and next to Cu- or Fe-base component
• • 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
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  • 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.]
  • Y10T428/12708—Sn-base component
  • Y10T428/12715—Next to Group IB metal-base component
• • 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
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  • Y10T428/12—All metal or with adjacent metals
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  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12882—Cu-base component alternative to Ag-, Au-, or Ni-base component
• • 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
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  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12903—Cu-base component
  • Y10T428/12917—Next to Fe-base component
• • 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
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  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12903—Cu-base component
  • Y10T428/12917—Next to Fe-base component
  • Y10T428/12924—Fe-base has 0.01-1.7% carbon [i.e., steel]
• • 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
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  • Y10T428/12—All metal or with adjacent metals
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  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12937—Co- or Ni-base component next to Fe-base component
• • 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.]
  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12944—Ni-base component
• • 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.]
  • Y10T428/12771—Transition metal-base component
  • Y10T428/12861—Group VIII or IB metal-base component
  • Y10T428/12951—Fe-base component
  • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
  • Y10T428/12979—Containing more than 10% nonferrous elements [e.g., high alloy, stainless]

Definitions

• the present invention relates to a thin high-strength clad material having a tensile strength of 70 kgf / mm 2 or more, excellent in press formability, and capable of being deep-drawn by forming a predetermined plating.
• a stainless steel base material which is effective as a cladding material for forming an anode case of a button battery or the like, is formed by pressing and integrating Ni or (iNi alloy on one main surface of the base material and Cu on the other main surface.
• a three-layer clad material consisting of a three-layer clad material and a stainless steel substrate, which is effective as a clad material constituting a force sword case, and two layers or three layers formed by pressure welding and integrating Ni or a Ni alloy on at least one main surface of the base material It relates to the improvement of layer clad material.
• Such a battery case material is required to have corrosion resistance and conductivity, as well as strength and drawability.
• the anode case is made of stainless steel as a base material, and Ni is applied to one main surface of the base material.
• a so-called three-layer clad material is used in which Cu is integrated with the main surface.
• a so-called two-layer or three-layer clad material is used for the force sword case, which is made of stainless steel as a base material, and Ni is integrated with one or both main surfaces of the base material.
• the battery life is determined by the amount of electrochemical reactants contained in the case, so it is necessary to increase the internal volume of the case in order to extend the battery life. Become.
• the anode case is made of stainless steel as a base material, and a three-layer clad material is formed by integrating Ni on one main surface and Cu on the other main surface of the base material.
• the weight ratio of stainless steel of the three-layer clad material is set to 77% to 91% of the entire clad material (corresponding to a thickness ratio of 79% to 92%), and the power source case is made of stainless steel as a base material.
• the formability for forming the anode case by pressing or the like is maintained. It is possible to increase the strength per unit thickness of the clad material and reduce the thickness, and increase the internal volume of the anode case while maintaining the strength, rigidity and crush resistance required for the anode case It was done.
• the button battery composed of the anode case and the force sword case made of the three-layer clad material described above can greatly extend the battery life compared to the conventional button battery. It is required to extend the battery life as well as to reduce the size and weight, and further improvement of the three-layer clad material is desired. However, at present, it is difficult to further increase the weight ratio (thickness ratio) of the stainless steel as the base material.
• the anode case and the force sword case proposed above a configuration is shown in which Ni, Cu, etc., which are integrated with the respective main surfaces of the stainless steel as the base material, are formed by plating.
• a thin plate of Ni or Cu having a predetermined thickness is disposed on each main surface of stainless steel as a base material, and is simultaneously pressed and integrated with a pressing roll to obtain a three-layer clad material having a predetermined thickness.
• Ni or Cu thin plates are provided with a certain tension in the direction in front of the pressure contact hole by the supply port of these thin plates, etc., to prevent wrinkles from occurring at the time of pressure welding.
• these sheets are usually lOOmn! It has a width of about 600 mm and a thickness of about 0.1 nim to 1.0 mm, and it is difficult to apply uniform tension to the entire thin plate with a plate thickness smaller than this.
• each of the Ni and Cu thin plates breaks or wrinkles when pressed against the stainless steel as the base material, resulting in a poor surface and poor connection with the base material.
• the thickness of the Ni or Cu thin plate could not be reduced to a predetermined value or less, and as a result, it was difficult to make the weight ratio (thickness ratio) of stainless steel in the entire clad material equal to or more than a predetermined value.
• Ni accounts for 2% of the weight ratio of the entire clad material (2% of the thickness ratio). %), but it is particularly difficult to make Cu less than 7% by weight (6% of thickness ratio) of the entire clad material.As a result, the total of Ni and Cu It was difficult to make the amount less than 9% of the weight ratio of the entire cladding material (8% of the thickness ratio).
• the weight ratio (thickness ratio) of the stainless steel as the base material is inevitably determined, and the weight ratio of the stainless steel as proposed above, that is, the weight ratio of the entire clad material, It has been considered difficult to extend the battery life beyond that of button batteries consisting of 77% to 91% (corresponding to a thickness ratio of 79% to 92%). Disclosure of the invention
• the present invention solves the above-mentioned problems, and particularly has a base material made of stainless steel, which is effective as a clad material for forming an anode case of a button cell or the like, and Ni or a Ni alloy on one main surface of the base material, and the other.
• the thickness ratio of stainless steel is further increased in the three-layer clad material in which Cu is pressed and integrated on the main surface, and the mechanical strength (tensile strength) is equal to or higher than that of the conventional three-layer clad material.
• Another object of the present invention is to provide a high-strength clad material excellent in formability and capable of reducing the thickness of the entire clad material.
• a two-layer or three-layer stainless steel base material which is effective as a clad material for forming a power source case for button batteries and the like, and Ni or a Ni alloy is pressure-welded on at least one main surface of the base material.
• the clad material increase the thickness ratio of stainless steel by one layer, have mechanical strength (tensile strength) equal to or higher than that of conventional two-layer or three-layer clad material, and reduce the overall thickness of the clad material
• An object of the present invention is to provide a high-strength clad material having excellent formability and enabling the formation.
• the present inventors have studied various means for preventing the occurrence of breaks and wrinkles when a thin plate of Ni, Cu or the like is pressed against a substrate made of stainless steel.
• a tension bridle roll having a predetermined shape is arranged on the front side of the press roll, and a thin plate of Ni, Cu, or the like is supplied to the press roll via the tension bridle roll, so that each of the flat rolls has a uniform thickness. Applying tension-Made it possible to prevent breakage and wrinkles during pressing.
• the thickness ratio of the stainless steel in the three-layer clad material is increased, and so-called skin pass temper rolling, which repeats annealing treatment and temper rolling at a predetermined temperature, is performed. Therefore, the mechanical strength (tensile strength) of the three-layer clad material can be made equal to or higher than that of the conventional three-layer clad material, and in a preferable configuration, it can be improved by 10% to 50% compared to the conventional three-layer clad material. It has become possible.
• the present invention provides a battery anode case, in which stainless steel is preferably used as a preferable material, and Ni or an iNi alloy is pressed into one main surface of the base material and Cu is pressed into the other main surface.
• the thickness of the stainless steel is more than 92% and not more than 99% of the total thickness of the clad material, and the tensile strength is 70 kgi7 nmi 2 or more. It provides a strength cladding material.
• the high-strength clad material with the above structure by forming a plating film made of any one of Sn, Sn-Pb and In on the surface of Cu, the formability is further improved and deep drawing can be performed.
• a high-strength clad material having excellent moldability can be provided.
• a stainless steel base material, and Ni or a Ni alloy pressed into one main surface of the base material, and the thickness of the stainless steel is The base material is a high-strength clad material excellent in formability characterized by being more than 98% and not more than 99.5% of the thickness of the entire clad material, and a stainless steel base material.
• the thickness of the stainless steel is more than 96% and not more than 99% of the thickness of the entire clad material in the clad material formed by pressing and integrating the iNi alloy. Things.
• the present invention also proposes a high-strength clad material excellent in formability, characterized in that the overall thickness is 0.05 mm to 0.100 mm.
• FIG. 1 is a perspective explanatory view showing a model for evaluation of press formability.
• the stainless steel constituting the base material of the high-strength clad material of the present invention all known materials can be applied. Particularly, when used as a battery case, corrosion resistance, moldability, mechanical strength, sealing From the viewpoint of strength and the like, austenitic stainless steel, ferritic stainless steel, duplex stainless steel, precipitation hardening stainless steel, and the like are preferable.
• Ni or iiNi alloy which is integrated by pressure welding with a stainless steel base material, is selected according to the application. Pure Ni is preferred from the viewpoints of resistance, corrosion resistance, weldability, etc., but from the viewpoint of preventing surface flaws and aesthetics (gloss), it is usually within the range of about 2 to 3 wt% (, 011,86,1 ⁇ ). It is also possible to use a Ni alloy to which a certain amount or more such as 0) and 0 has been added.
• the material of Cu which is to be welded and integrated with a stainless steel substrate, is selected according to the application.However, especially when used as an anode case for batteries, corrosion resistance, reactivity with electrolyte, prevention of gas generation, etc. From the viewpoint, pure Cu having a purity as high as possible is preferred, but the effect of the present invention can be realized by using a known material containing some impurities. From the viewpoint of eliminating mercury, it is also possible to use a material in which the surface of Cu is plated or coated with Sn, Sn-Pb, In, or the like.
• the clad material of the present invention it is possible to improve press formability by plating the surface of Cu with Sn, Sn-Pb, In or the like. Can be easily molded.
• the thickness of the integrated pressure welding of Ni, Ni alloy, Cu, etc. can be greatly reduced, the thickness of the stainless steel as a base material in the entire clad material is significantly increased. Can be improved.
• the amount of stainless steel can be 92 to 99% of the entire thickness.
• the thickness ratio when the thickness ratio is less than 92%, only the same effects as those of the conventional configuration can be obtained, and when the thickness ratio exceeds 99%, fine holes and cracks are generated in the layer of Ni, Cu, etc.
• the thickness ratio when used for an anode case for a battery, hydrogen gas is generated by the reaction with the content liquid or liquid leakage occurs, and the object cannot be achieved. Therefore, the thickness ratio was set to 92% to 99%.
• tensile strength and 70 kgf / imn 2 or more a preferred arrangement 75 kgf / imn 2 or more, further, a predetermined scanning Kinpasu temper rolling on demand 90 kgf / mm 2 or more by subjecting provides 95Kgf7mm 2 or more clad material.
• a cladding material of 0.07 mm to 0.100 mm is preferable.
• the thickness of the stainless steel exceeds 98% of the total thickness of the clad material. 99.5% or less.
• the thickness of the stainless steel is 96% of the total thickness of the clad material. % And 99% or less, and a high-strength clad material having a bow I tensile strength equal to or higher than that of the conventional configuration can be provided.
• the overall thickness of these clad materials is 0.05mn while maintaining the thickness ratio of stainless steel. It is possible to provide a clad material with a thickness of ⁇ 0.3 mm, and a preferable range for effectively utilizing the effect of the present invention is 0.05 mm to 0.100 mm. Considering properties and the like, a clad material of 0.07 mm to 0.100 mm is preferable.
• the thickness ratio, overall thickness, tensile strength, etc. of each material, as well as the hardness, Erichsen value, etc. can be adjusted according to the application.
• Various desired clad materials can be obtained by selecting the optimum conditions within the range described in the claims according to the shape that determines the internal volume of the case that is the factor, the dimensions, workability, etc. be able to.
• Stainless steel equivalent to SUS304 (JIS G4307) was used as the base material, VNiR equivalent (JIS H4501) was used for Ni, and C1020 equivalent (JIS H3100) was used for Cu.
• Tensile strength was measured based on JIS Z2241, hardness (iJIS Z2251, Erichsen value (iJIS Z2247).
• Remarks 1 The increase in SUS is indicated by the thickness of SUS of each sample when the thickness of SUS of sample No. 1 is 100, which is the conventional clad material.
• Remarks 2 Sample Nos. 9 and 10 are the clad materials of Samples Nos. 4 and 8, respectively, subjected to skin pass temper rolling.
• the clad material of the present invention has superior tensile strength as compared with the conventional clad material. Also, the Erichsen value is about the same as that of the conventional clad material. It can also be seen that the drawability is not deteriorated as compared with the conventional clad material.
• the thickness of the clad material of the present invention was varied, and the tensile strength of the clad material of the present invention was compared with that of the conventional clad material.
• stainless steel, Ni, and Cu as base materials were made of the same materials as in Example 1.
• the increase in SUS is indicated by the SUS thickness of each sample when the thickness of SUS of sample No. ll, which is a conventional clad material, is set to 100.
• Sample Nos. 25 and 26 are the clad materials of Sample Nos. 21 and 17, respectively, which were subjected to skin pass temper rolling. From Table 2 above, the clad material of the present invention has superior tensile strength compared to the conventional clad material, and when the same tensile strength as the conventional clad material, the thickness of the clad material is reduced by 5%. It can be seen that it can be reduced by about 50%. For example, when used as a battery anode case, if the case has the same outer diameter, the case inner volume can be increased by reducing the thickness, and as a result, the battery life can be improved.
• Both the clad material of the present invention and the conventional clad material have an overall thickness of 0.09 mni.
• stainless steel equivalent to SUS304 JIS G4307) was used as the base stainless steel, and VNiR equivalent (JIS H4501) was used as Ni.
• the tensile strength was based on JIS Z2241.
• Ni SUS: Ni () (kgf / band 2)
• Clad material 29 1.0: 99.0: 0 101 86
• Table 3 shows the results of skin pass temper rolling of the clad material of the present invention, and it can be seen that the clad material of the present invention has superior tensile strength as compared with the conventional clad material. In addition, it was confirmed that even when the skin pass temper rolling was not performed, it had a tensile strength equal to or higher than that of the conventional clad material.
• Example 4
• the clad material of the present invention consisting of samples Nos. 4 to 10 (Ni / SUS / Cu) of Example 1 (with an overall thickness of 0.09 nmi) was drawn by press working into a bottomed cylinder with an outer diameter of 7 mm and a height of 6 mm as shown in Figure la, with the inner peripheral surface being Cu.
• Table 4 Both have good roundness and good shape without causing cracks, breaks, etc.
• the sample Nos. 28 to 30 (Ni / SUS) and 32 to 34 (Ni / SUS / Ni) of Example 3 were used.
• the clad material of the present invention (total thickness: 0.09 mm) was drawn into a bottomed cylinder having an outer diameter of 7 mm and a height of 6 mm as shown in FIG. Table 5 shows the results.
• Sample Nos. 28 to 30 were formed so that the inner peripheral surface was made of SUS. In each case, a case with good roundness and good shape was obtained without inducing cracks, breakage, and the like.
• Samples Nos. 4 to 8 which were not plated, did not have cracks or breaks, but had shape defects such as roundness, and could not necessarily be said to have good press formability.
• Samples Nos. 9 and 10 which had not been plated, were found to crack, break, etc., and it was confirmed that the pressing itself was difficult.
• the clad materials of Sample Nos. 4 to 10 with Sn, Sn-Pb, and In on the Cu surface each had good roundness without causing cracks or breakage. Case was obtained. It was confirmed that the use of the clad material of the present invention was further expanded by obtaining good press formability even in samples Nos. 9 to 10, which have particularly high tensile strength and are not suitable for drawing. did. Industrial applicability
• the clad material of the present invention is made of stainless steel as a base material, and Ni or a Ni alloy is pressed into one main surface of the base material and Cu is pressed into the other main surface.
• the thickness ratio of stainless steel in a two-layer or three-layer clad material composed of a three-layer clad material or stainless steel as a base material, and Ni or a Ni alloy pressed and integrated on at least one main surface of the base material And has a mechanical strength (tensile strength) equal to or higher than that of the conventional clad material, making it possible to reduce the overall thickness of the clad material.
• the internal volume of the case can be increased while maintaining the strength, rigidity, and crush resistance required for these cases, and the storage capacity of the electrochemically reactive substance is substantially increased.
• Increase the size and weight and Moni it is possible to achieve an improvement in battery life.
• a three-layer clad material having a Cu layer it is possible to improve the press formability by plating the Cu surface with Sn, Sn-Pb, In, or the like.
• the use of the clad material of the present invention can be further expanded.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Sealing Battery Cases Or Jackets (AREA)
• Laminated Bodies (AREA)

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• 1998
  • 1998-03-13 JP JP10082667A patent/JPH11104856A/ja active Pending
  • 1998-04-17 CN CNB98808466XA patent/CN1157286C/zh not_active Expired - Fee Related
  • 1998-04-17 EP EP98914061A patent/EP1008441A4/en not_active Ceased
  • 1998-04-17 WO PCT/JP1998/001760 patent/WO1999006208A1/ja not_active Ceased
  • 1998-04-17 US US09/463,620 patent/US6316128B1/en not_active Expired - Lifetime
  • 1998-04-17 KR KR1020007000894A patent/KR100318972B1/ko not_active Expired - Fee Related

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