| 摘要 |
A method for improving surface defect of specific steel resistant to concentrated nitric acid, wherein the specific steel in a molten state, either a stainless steel comprising C</=0.1 wt %, 2.5</=Si</=5 wt %, Mn</=2 wt %, 15</=Cr</=20 wt %, 10</=Ni</=22 wt %, Cx10</= at least one of Nb, Ta and Zr</=2.5 wt %, the balance being iron and inevitable impurities, or a high-silicon-nickel-chromium steel comprising C</=0.03 wt %, 5</=Si</=7 wt %, Mn</=10 wt %, 7</=Cr</=16 wt %, 10</=Ni</=19 wt %, Cx4</= at least one of Nb, Ta and Zr</=2 wt %, the balance being iron and inevitable impurities, is admixed with titanium (0.05</=Ti</=0.2 wt %) when producing said steel.
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| 申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED;NIPPON STAINLESS STEEL CO. |
发明人 |
ITO, NAOYA;YOSHIDA, TAKESHI;AOKI, MASAHIRO;OKUBO, MASAO;MIKI, MASAYOSHI |
