JPS55134189A - Surface processing method - Google Patents

Surface processing method

Info

Publication number
JPS55134189A
JPS55134189A JP4183679A JP4183679A JPS55134189A JP S55134189 A JPS55134189 A JP S55134189A JP 4183679 A JP4183679 A JP 4183679A JP 4183679 A JP4183679 A JP 4183679A JP S55134189 A JPS55134189 A JP S55134189A
Authority
JP
Japan
Prior art keywords
plating
lustless
current density
mainly composed
chromic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4183679A
Other languages
Japanese (ja)
Inventor
Sadaaki Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP4183679A priority Critical patent/JPS55134189A/en
Publication of JPS55134189A publication Critical patent/JPS55134189A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: Not to produce the crack on the plating surface, by using a specified plating bath mainly composed of chromic acid and controlling the liquid temperature and current density in a fixed range and then, carrying out lustless chromium plating and after that, finishing the surface.
CONSTITUTION: Lustless hard chromium plating is carried out under the following condition by using the plating bath contained a very small amount of additives stably supplying trivalent chromium in the water solution mainly composed of chromic acid. Solution temperature; 40W50°C, current density; 80W100A/dm2. After that, buff finishing of the surface of lustlessly plated material to be plated, is carried out until lustrous face is obtained. By the above method, plating face having no minute crack, is able to obtain.
COPYRIGHT: (C)1980,JPO&Japio
JP4183679A 1979-04-06 1979-04-06 Surface processing method Pending JPS55134189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4183679A JPS55134189A (en) 1979-04-06 1979-04-06 Surface processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4183679A JPS55134189A (en) 1979-04-06 1979-04-06 Surface processing method

Publications (1)

Publication Number Publication Date
JPS55134189A true JPS55134189A (en) 1980-10-18

Family

ID=12619340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4183679A Pending JPS55134189A (en) 1979-04-06 1979-04-06 Surface processing method

Country Status (1)

Country Link
JP (1) JPS55134189A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046085A (en) * 2012-12-27 2013-04-17 南通市申海工业技术科技有限公司 Chromium plating process of nuclear generator unit members
CN105063676A (en) * 2015-08-17 2015-11-18 内蒙古第一机械集团有限公司 Method for electroplating hard chromium by using trivalent chromium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046085A (en) * 2012-12-27 2013-04-17 南通市申海工业技术科技有限公司 Chromium plating process of nuclear generator unit members
CN103046085B (en) * 2012-12-27 2016-05-18 南通市申海工业技术科技有限公司 Nuclear power generating sets member chrome-plated process
CN105063676A (en) * 2015-08-17 2015-11-18 内蒙古第一机械集团有限公司 Method for electroplating hard chromium by using trivalent chromium

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