Title:
MANUFACTURE OF METALLIC MOLD FOR PRECISION MOLDING
Document Type and Number:
Japanese Patent JPS5920486
Kind Code:
A
Abstract:
PURPOSE:To manufacture the titled metallic mold having unevenness transferred accurately from a matrix and high surface hardness, by depositing a hard film on the surface of the matrix by a vacuum deposition method, depositing a metal on the hard film by electroforming, and stripping the matrix from the hard film. CONSTITUTION:A matrix 1 is treated with an inverse current in an aqueous NaOH soln. to form a stripping accelerating layer 2. A hard film 3 such as a Cr film is deposited on the layer 2 by a vacuum deposition method. After etching the surface of the film 3, an Ni layer 4 is formed by striking, and an Ni layer 5 of the required thickness is further deposited on the layer 4 by electroforming. After finishing the formation of the layer 5, the matrix 1 including the layer 2 is stripped from the film 3 to obtain a stamper 6.
Inventors:
HATSUTORI TAKAO
MATSUNO KUNIO
MURAI KAZUHIRO
TSUKAMOTO TOSHIHIRO
MATSUNO KUNIO
MURAI KAZUHIRO
TSUKAMOTO TOSHIHIRO
Application Number:
JP12591882A
Publication Date:
February 02, 1984
Filing Date:
July 21, 1982
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
TOSHIBA EMI KK
TOSHIBA EMI KK
International Classes:
B21D28/34; C25D1/00; C25D1/10; (IPC1-7): B21D28/34; C25D1/10
Attorney, Agent or Firm:
Noriyuki Noriyuki
Previous Patent: A steel plate processing method and a steel plate processing device
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