초록 ▼

The present invention, which is aimed at providing a method for manufacturing a clad material that can be used for the anode cases and cathode cases of button-type microbatteries and other miniature electronic devices requiring the use of comparatively thin, drawable sheets, allows the difference be

The present invention, which is aimed at providing a method for manufacturing a clad material that can be used for the anode cases and cathode cases of button-type microbatteries and other miniature electronic devices requiring the use of comparatively thin, drawable sheets, allows the difference between r values, or Lankford values (which characterize the plastic anisotropy between the rolling/bonding direction of a clad material and a direction at a prescribed angle to the rolling/bonding direction) to be reduced by preforming cold rolling at a reduction of 30% or lower in addition to performing a conventional method for manufacturing a clad material, making it possible to substantially enhance the mechanical strength of the clad material and to mass-produce clad materials that have low reduction anisotropy.

대표청구항 ▼

[ What is claimed is:] [1.]1. A clad material formed by rolling/bonding a metal cladding to at least one principal surface of a metal substrate in a rolling/bonding direction, wherein the maximum difference between the Lankford values (r values, measured under 5% elongation) expressing the plastic a

[ What is claimed is:] [1.]1. A clad material formed by rolling/bonding a metal cladding to at least one principal surface of a metal substrate in a rolling/bonding direction, wherein the maximum difference between the Lankford values (r values, measured under 5% elongation) expressing the plastic anisotropy between the rolling/bonding direction, a direction at 45.degree. to the rolling/bonding direction, and a direction at 90.degree. to the rolling/bonding direction, is less than 0.6.