- 专利标题： ANTIOXIDANT FOR USE IN HEATING OF ALLOY MATERIAL, AND METHOD FOR HEATING ALLOY MATERIAL USING SAME
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申请号： EP21748377.5申请日： 2021-01-28
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公开(公告)号： EP4098756A1公开(公告)日： 2022-12-07
- 发明人: HAYASHI, Kosuke , HIDAKA, Yasuyoshi , KONDO, Yasumitsu , FUJITA, Aya , MIYAMOTO, Seiji , KAGARI, Takayoshi , NOHARA, Wataru
- 申请人： NIPPON STEEL CORPORATION
- 申请人地址： JP Chiyoda-ku Tokyo 100-8071 6-1, Marunouchi 2-chome
- 代理机构： Zimmermann & Partner Patentanwälte mbB
- 优先权： JP2020015660 20200131
- 国际公布： WO2021153657 20210805
- 主分类号： C21D1/70
- IPC分类号： C21D1/70 ; C03C8/16 ; C09K15/02 ; C22C19/05 ; C22C38/00 ; C22C38/38
摘要：
An antioxidant agent for heating an alloy material excellent in blocking resistance, and further excellent in oxidation resistance even when heated at a high temperature for a long time is provided. The antioxidant agent for heating an alloy material according to the present embodiment consists of, in mass%, SiO 2 : 40.0 to 80.0%, Al 2 O 3 : 0 to 30.0%, MgO: 0 to 5.0%, 10.00 to 50.00% in total of one kind or more selected from a group consisting of Na 2 O: 10.0% or less, K 2 O: 20.00% or less, and CaO: 25.0% or less, and B 2 O 3 : 0 to less than 0.5%, the balance being impurities, and satisfying Formula (1):
(2SiO 2 + Al 2 O 3 ) / (0.1MgO + 0.2B 2 O 3 + 6Na 2 O + 1.4K 2 O + 2CaO) ≤ 2.50 (1)
where a content in mass% of a corresponding component is substituted for each chemical formula in Formula (1).
(2SiO 2 + Al 2 O 3 ) / (0.1MgO + 0.2B 2 O 3 + 6Na 2 O + 1.4K 2 O + 2CaO) ≤ 2.50 (1)
where a content in mass% of a corresponding component is substituted for each chemical formula in Formula (1).
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