| 发明名称 |
METHOD FOR PRODUCING BLANK FOR IRON-NICKEL BASE ALLOY COLD-ROLLED SHEET FOR SHADOW MASK HAVING EXCELLENT ETCHING PIERCING PROPERTY |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing a blank for Fe-Ni base alloy cold-rolled sheet for shadow masks having an excellent etching piercing property useable as the shadow mask material of a highly clear and bright TV. SOLUTION: When the blank for Fe-Ni base alloy cold-rolled sheet for shadow mask is produced, a deoxidizing process is performed in which an aluminum deoxidizer is added by≤3.0 kg/ton of molten steel while reacting the molten alloy after adjusting the Ni component and CaO-Al<SB>2</SB>O<SB>3</SB>-MgO base slag containing≥57 mass% CaO and Al<SB>2</SB>O<SB>3</SB>in which the ratio of CaO/(CaO + Al<SB>2</SB>O<SB>3</SB>) is≥0.45,≤25 mass% MgO,≤15 mass% SiO<SB>2</SB>and≤3 mass% total of oxides of metals having weaker affinity to oxygen than that of silicon. COPYRIGHT: (C)2005,JPO&NCIPI
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| 申请公布号 |
JP2004285448(A) |
申请公布日期 |
2004.10.14 |
| 申请号 |
JP20030081319 |
申请日期 |
2003.03.24 |
| 申请人 |
JFE STEEL KK |
发明人 |
ASADA HIROKI;OKIMOTO SHINICHI;TANAKA HIROSHI;KONDO TSUNEO;UCHINO TOMOHIKO;MATSUNO EIJU;ARIGA TAMAKO;CHINO ATSUSHI;IKEDA MASABUMI;INOUE AKIHIKO |
| 分类号 |
B22D1/00;C21C7/00;C21C7/04;C21C7/06;C21C7/068;C21C7/10;C22C38/00;C22C38/08;C22C38/60;H01J29/07;(IPC1-7):C21C7/06 |
主分类号 |
B22D1/00 |
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