Title:
SURFACE TREATMENT METHOD AND COATING METHOD FOR STEEL MATERIAL, AND METHOD FOR PRODUCING MACHINE COMPONENT
Document Type and Number:
WIPO Patent Application WO/2013/061705
Kind Code:
A1
Abstract:
This surface treatment method comprises a rust proofing step, a rinsing step and a cleaning step. In the rust proofing step, a rust proofing treatment is carried out on the surface of a steel material using a rust proofing liquid that contains orthophosphoric acid and an organic acid. In the rinsing step, a rinsing treatment is carried out on the surface of the steel material using a treatment liquid containing an oxo acid salt of a transition metal. In the cleaning step, a cleaning treatment is carried out on the surface of the steel material after the rinsing step.
Inventors:
MORITA HARUJI (JP)
TATE TSUNEO (JP)
SHIOZAWA AKIRA (JP)
TATE TSUNEO (JP)
SHIOZAWA AKIRA (JP)
Application Number:
PCT/JP2012/073363
Publication Date:
May 02, 2013
Filing Date:
September 12, 2012
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
COTEC CORP (JP)
NIPPON KAZAI CO LTD (JP)
MORITA HARUJI (JP)
TATE TSUNEO (JP)
SHIOZAWA AKIRA (JP)
COTEC CORP (JP)
NIPPON KAZAI CO LTD (JP)
MORITA HARUJI (JP)
TATE TSUNEO (JP)
SHIOZAWA AKIRA (JP)
International Classes:
C23C22/17; C23C22/83
Domestic Patent References:
| WO2003093533A1 | 2003-11-13 |
Foreign References:
| JP2006520852A | 2006-09-14 | |||
| JPS4615406B | ||||
| JP2005264073A | 2005-09-29 | |||
| JPH0762553A | 1995-03-07 | |||
| JPS5947396A | 1984-03-17 | |||
| JP2003156053A | 2003-05-30 |
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
fresh green -- a global IP patent business corporation (JP)
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Claims: