Title:
クロムめっき部品の製造方法
Document Type and Number:
Japanese Patent JP6450838
Kind Code:
B2
Abstract:
According to the method for producing chromium plated parts, a plurality of workpieces are immersed in a chromium plating bath, a plating treatment is performed by using a pulse current, and chromium plating layers that have compressive residual stress and suppressed cracking are deposited on surfaces of the plurality of workpieces. A direct current from plating separation lower limit current density up to a range in which the chromium plating layers have compressive residual stress is superimposed during downtime of application of the pulse current.
Inventors:
Yuichi Kobayashi
Kiyokazu Nakane
Kiyokazu Nakane
Application Number:
JP2017517944A
Publication Date:
January 09, 2019
Filing Date:
May 10, 2016
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
C25D5/18; C25D5/26; C25D5/36; C25D21/00; C25D21/12
Domestic Patent References:
| JP2000199095A | ||||
| JP2008542552A | ||||
| JP2010226065A | ||||
| JP3207884A | ||||
| JP43020082B1 | ||||
| JP2274892A |
Attorney, Agent or Firm:
Shiga International Patent Office