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Patent Searching and Data


Title:
METHOD FOR PRODUCING PLATED BLACK-HEART MALLEABLE CAST IRON MEMBER, PLATED BLACK-HEART MALLEABLE CAST IRON MEMBER, AND PIPE FITTING
Document Type and Number:
WIPO Patent Application WO/2019/065721
Kind Code:
A1
Abstract:
Provided is a method by which a black-heart malleable cast iron member having a plating layer highly adhesive to a black-heart malleable cast iron member can be produced with less of a burden on the environment compared to conventional methods. This method is a method for producing a plated black-heart malleable cast iron member having a plating layer formed on the surface of a black-heart malleable cast iron member, the method comprising: a step for performing graphitization in a non-oxidizing and decarburizing environment; a step for immersing a graphitized black-heart malleable cast iron in a flux for at least 3.0 minutes; a step for heating the black-heart malleable cast iron removed from the flux to 90°C or higher; and a step for performing hot-dip coating on the heated black-heart malleable cast iron member.

Inventors:
GOTO, Ryo (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
FUKAYA, Takayuki (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
MATSUI, Hiroshi (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
SAWADA, Akinori (2-70, Konan 1-chome, Minato-k, Tokyo 24, 〒1088224, JP)
Application Number:
JP2018/035656
Publication Date:
April 04, 2019
Filing Date:
September 26, 2018
Export Citation:
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Assignee:
HITACHI METALS, LTD. (2-70, Konan 1-chome Minato-k, Tokyo 24, 〒1088224, JP)
International Classes:
F16L58/08; B22D29/00; C21D5/00; C21D5/14; C23C2/02
Foreign References:
JP2014019878A2014-02-03
JPS58151463A1983-09-08
JPH06316945A1994-11-15
JPH11152539A1999-06-08
Attorney, Agent or Firm:
YAMAO, Norihito (AOYAMA & PARTNERS, Umeda Hankyu Bldg. Office Tower 8-1, Kakuda-cho, Kita-ku, Osaka-sh, Osaka 17, 〒5300017, JP)
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