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Found results for
 patents
1.
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Surface treatment method and coating method for steel material, and method for producing machine component
| Application Number |
14350724 |
| Grant Number |
09752225 |
| Status |
In Force |
| Filing Date |
2012-09-12 |
| First Publication Date |
2014-10-02 |
| Grant Date |
2017-09-05 |
| Owner |
- KOMATSU LTD. (Japan)
- COTEC CORPORATION (Japan)
- NIPPON KAZAI Co., Ltd. (Japan)
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| Inventor |
- Morita, Haruji
- Tate, Tsuneo
- Shiozawa, Akira
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Abstract
This surface treatment method comprises a rustproofing step, a rinsing step, and a cleaning step. In the rustproofing step, a rustproofing liquid containing orthophosphoric acid and an organic acid is used to perform a rustproofing treatment on the surface of a steel material. In the rinsing step, a treatment liquid containing an oxo acid salt of a transition metal is used to perform a rinsing treatment on the surface of the steel material. In the cleaning step, the surface of the steel material that has undergone the rinsing step is subjected to a cleaning treatment.
IPC Classes ?
- C23C 22/08 - Orthophosphates
- C23C 22/83 - Chemical after-treatment
- C23C 8/42 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied
- C23C 22/47 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing oxalates containing also phosphates
- C23C 8/80 - After-treatment
- C23C 22/82 - After-treatment
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2.
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SURFACE TREATMENT METHOD AND COATING METHOD FOR STEEL MATERIAL, AND METHOD FOR PRODUCING MACHINE COMPONENT
| Application Number |
JP2012073363 |
| Publication Number |
2013/061705 |
| Status |
In Force |
| Filing Date |
2012-09-12 |
| Publication Date |
2013-05-02 |
| Owner |
- KOMATSU LTD. (Japan)
- COTEC CORPORATION (Japan)
- NIPPON KAZAI Co. Ltd. (Japan)
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| Inventor |
- Morita, Haruji
- Tate, Tsuneo
- Shiozawa, Akira
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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.
IPC Classes ?
- C23C 22/17 - Orthophosphates containing zinc cations containing also organic acids
- C23C 22/83 - Chemical after-treatment
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