发明授权
- 专利标题: Method of surface-finishing stainless steel after descaling
- 专利标题(中): 除锈后表面处理不锈钢的方法
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申请号: US10499964申请日: 2002-10-21
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公开(公告)号: US07138069B2公开(公告)日: 2006-11-21
- 发明人: Eiji Sato , Youichi Nakamura
- 申请人: Eiji Sato , Youichi Nakamura
- 申请人地址: JP Tokyo
- 专利权人: Parker Corporation
- 当前专利权人: Parker Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Stevens, Davis, Miller & Mosher, LLP
- 优先权: JP2001-391656 20011225
- 国际申请: PCT/JP02/10874 WO 20021021
- 国际公布: WO03/056063 WO 20030710
- 主分类号: C23F1/00
- IPC分类号: C23F1/00
摘要:
A new surface finishing process for stainless steel where beautiful, bright and milky white coloured surface is obtainable even for such grades as high carbon containing 13 chromium steel and high sulfur containing free cutting stainless steel is disclosed. After removing the surface scale, (1) immerse the stainless steel into the 1st treating solution containing nitric acid: 5–40 g/l, hydrofluoric acid: 2–10 g/l and Fe(III) ion: 15–40 g/l for 5–180 sec., then rinse in water, (2) and successesively immerse into the 2nd treating solution containing nitric acid: 120–250 g/l, Fe(III) ion: 15–40 g/l for 30–300 sec., then rinse in water.
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