EP0597131A4 - Phosphating process. - Google Patents

Phosphating process.

Info

Publication number
EP0597131A4
EP0597131A4 EP93911970A EP93911970A EP0597131A4 EP 0597131 A4 EP0597131 A4 EP 0597131A4 EP 93911970 A EP93911970 A EP 93911970A EP 93911970 A EP93911970 A EP 93911970A EP 0597131 A4 EP0597131 A4 EP 0597131A4
Authority
EP
European Patent Office
Prior art keywords
coating
phosphate coating
phosphating process
phosphate
conversion coating
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.)
Granted
Application number
EP93911970A
Other languages
German (de)
French (fr)
Other versions
EP0597131A1 (en
EP0597131B1 (en
Inventor
Shigeki Matsuda
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.)
Denso Corp
Original Assignee
NipponDenso 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15207902&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0597131(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Publication of EP0597131A1 publication Critical patent/EP0597131A1/en
Publication of EP0597131A4 publication Critical patent/EP0597131A4/en
Application granted granted Critical
Publication of EP0597131B1 publication Critical patent/EP0597131B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/06—Filtering particles other than ions
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/36—Phosphatising

Abstract

A process for producing a phosphate coating, wherein a sludge, which is an impurity component other than inevitable impurities contained in a phosphating bath, is removed and the object is electrolyzed in order to enhance the capability of chemical conversion coating and provide a high-quality conversion coating. This process serves to form a satisfactory phosphate coating on whatever metallic material and can provide a phosphate coating having a large thickness which has not been available in the prior art.
EP93911970A 1992-04-30 1993-04-30 Phosphating process Expired - Lifetime EP0597131B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP137833/92 1992-04-30
JP13783392A JPH05306497A (en) 1992-04-30 1992-04-30 Phophatizing chemical conversion treatment
PCT/JP1993/000593 WO1993022481A1 (en) 1992-04-30 1993-04-30 Phosphating process

Publications (3)

Publication Number Publication Date
EP0597131A1 EP0597131A1 (en) 1994-05-18
EP0597131A4 true EP0597131A4 (en) 1995-01-25
EP0597131B1 EP0597131B1 (en) 1998-01-07

Family

ID=15207902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93911970A Expired - Lifetime EP0597131B1 (en) 1992-04-30 1993-04-30 Phosphating process

Country Status (7)

Country Link
EP (1) EP0597131B1 (en)
JP (2) JPH05306497A (en)
KR (1) KR100261953B1 (en)
AU (1) AU663599B2 (en)
CA (1) CA2112592C (en)
DE (1) DE69316160T2 (en)
WO (1) WO1993022481A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100400522B1 (en) * 1998-12-17 2003-10-10 가부시키가이샤 덴소 Electrolytic phosphating process and composite coating formed on steel surface
JP4019723B2 (en) * 2001-02-23 2007-12-12 株式会社デンソー Electrolytic phosphate chemical treatment method
US7704562B2 (en) * 2006-08-14 2010-04-27 Cordani Jr John L Process for improving the adhesion of polymeric materials to metal surfaces
DE102013220043A1 (en) * 2013-10-02 2015-04-02 Robert Bosch Gmbh Stator laminated core and method for coating a laminated stator core
JP6274556B2 (en) * 2013-12-03 2018-02-07 スズキ株式会社 Electrolytic plating method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043491A (en) * 1983-08-19 1985-03-08 Nippon Denso Co Ltd Formation of phosphate film on iron and steel surfaces
DE3871031D1 (en) 1987-08-19 1992-06-17 Metallgesellschaft Ag METHOD FOR PHOSPHATING METALS.
EP0370535B1 (en) 1988-11-25 1992-11-11 Metallgesellschaft Aktiengesellschaft Process for applying phosphate coatings
JPH02153098A (en) * 1988-12-05 1990-06-12 Toshiyuki Ota Phosphating method
JPH0336296A (en) * 1989-06-29 1991-02-15 Nippon Parkerizing Co Ltd Surface treatment of stainless steel
JPH04120294A (en) 1990-09-11 1992-04-21 Toyota Motor Corp Method for undercoating treatment for stainless steel
JPH04268096A (en) * 1991-02-22 1992-09-24 Nippon Paint Co Ltd Formation of chemical conversion film
JP2739864B2 (en) * 1991-05-01 1998-04-15 株式会社デンソー Phosphate conversion treatment method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GABE: "anodic acceleration of phosphating processes", METAL FINISHING, vol. 83, no. 4, April 1985 (1985-04-01), USA, pages 41 - 44 *
See also references of WO9322481A1 *
ZANTOUT: "electrochemical acceleration of phosphating processes", TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, vol. 61, no. 3, 1983, GB, pages 88 - 92 *

Also Published As

Publication number Publication date
CA2112592C (en) 2002-05-21
EP0597131A1 (en) 1994-05-18
WO1993022481A1 (en) 1993-11-11
EP0597131B1 (en) 1998-01-07
AU663599B2 (en) 1995-10-12
KR100261953B1 (en) 2000-07-15
CA2112592A1 (en) 1993-11-11
DE69316160T2 (en) 1998-08-06
DE69316160D1 (en) 1998-02-12
JP3060537B2 (en) 2000-07-10
AU4271993A (en) 1993-11-29
JPH05306497A (en) 1993-11-19

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