Title:
WIRE ROD PLATING DEVICE
Document Type and Number:
Japanese Patent JP3109992
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To attain the remarkable cost reduction as compared with the case of gaseous nitrogen by using a heat generating type atmospheric gas in which moisture is absorbed to a specified dew point as a nonoxidizing gas to be fed to the face of a plating bath in the rising part of a wire rod.
SOLUTION: At the time of immersing a steel wire 1 in a galvanizing tank 2, executing galvanizing and taking up the steel wire 1 from the plating tank 2, through the gas throttling part, the bath face is covered with a nonoxidizing atmospheric gas to prevent the oxidation of the bath face, and the sticking of oxide to the wire rod 1 is prevented. As a nonoxidizing gas source therefor, the one using city gas or natural gas as the raw material, refrigerated till the dew point of ≤-40°C by a heat generating type gas generating device 4, and with moisture absorbed is used. Furthermore, the heat generating gas, e.g. has a compsn. composed of, by vol., 9% CO2, 4 to 5% CO, 4 to 5% H2 and 80% N2. In this way, easily applicable heat generating type gas can be used, by which the product capable of the remarkable reduction of the cost and moreover having a plated surface excellent in luster can be obtd.
Inventors:
Naohisa Tatsumi
Hirofumi Matsumoto
Tomio Kizukazu
Hirofumi Matsumoto
Tomio Kizukazu
Application Number:
JP23470296A
Publication Date:
November 20, 2000
Filing Date:
August 17, 1996
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
Kokoku Steel Wire Co., Ltd.
Kokoku Steel Wire Co., Ltd.
International Classes:
C25D7/06; C23C2/36; C23C2/38; (IPC1-7): C23C2/38
Attorney, Agent or Firm:
Kousuke Agata