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公开(公告)号：EP3529384B1
公开(公告)日：2024-05-29
申请号：EP17804011.9
申请日：2017-10-19
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3.发明公开
公开(公告)号：EP4098756A1
公开(公告)日：2022-12-07
申请号：EP21748377.5
申请日：2021-01-28
发明人： HAYASHI, Kosuke , HIDAKA, Yasuyoshi , KONDO, Yasumitsu , FUJITA, Aya , MIYAMOTO, Seiji , KAGARI, Takayoshi , NOHARA, Wataru
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).-
公开(公告)号：EP3456427B1
公开(公告)日：2021-12-08
申请号：EP17796339.4
申请日：2017-05-08
发明人： PARK, Sung Yong , KIM, Jae Sung , EOM, Won Ik
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公开(公告)号：EP3456687B1
公开(公告)日：2021-10-06
申请号：EP17796047.3
申请日：2017-05-01
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公开(公告)号：EP2391508B1
公开(公告)日：2020-04-01
申请号：EP10702612.2
申请日：2010-02-01
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公开(公告)号：EP3142821B1
公开(公告)日：2019-07-17
申请号：EP15744626.1
申请日：2015-05-07
发明人： CACACE, Antonino
IPC分类号： B23K31/02 , C21D8/02 , C21D8/04 , C21D9/00 , C21D1/68 , C21D1/70 , B23K101/34 , B23K103/04 , B32B15/01 , B21D39/04
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8.发明公开
公开(公告)号：EP2634270A4
公开(公告)日：2018-01-17
申请号：EP11835488
申请日：2011-04-14
申请人： BAOSHAN IRON & STEEL
发明人： ZHAO ZIPENG , JI YAMING , YANG YONGJIE , LI GUOBAO , LI DENGFENG , XU YUNPENG
CPC分类号： C21D1/70 , C21D1/26 , C21D1/68 , C21D3/04 , C21D8/12 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/16
摘要： An annealing separator for manufacturing grain-oriented silicon steel with mirror-like surface having good magnetic performance consists of the composition of which is 77-98 by wt% of Al 2 O 3 powder, 1-8 by wt% of alkaline earth powder, 1ˆ¼15 by wt% of alkali metal chloride and/or alkaline earth metal chloride. The annealing separator of the invention can avoid forming a glass-film undercoating on the surface of the steel sheet during high-temperature annealing, and at the same time, the oxide embedded at near-surface of the sheet is removed by means of corrosive reaction of the chloride, so that a produce with smooth surface and stable magnetic performance is obtained.
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公开(公告)号：EP2003216A4
公开(公告)日：2015-06-24
申请号：EP07739461
申请日：2007-03-23
发明人： HIRASE NAOYA , NAKANISHI TETSUYA , SHIMODA KAZUHIRO , OKADA HIROKAZU , YAMAKAWA TOMIO , HIDAKA YASUYOSHI
CPC分类号： B21B23/00 , B21B19/04 , C21D1/70 , C21D1/74 , C21D9/08 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/44
摘要： The present invention is to provide a method for producing duplex stainless steel seamless pipe in which a duplex stainless steel billet can be inhibited from generating an oxide scale on the surface thereof during heating and the generation of outer surface flaw can also be prevented. The billet is heated in the a heating furnace for 1.5 hours or more and 4.0 hours or less at a heating temperature of 1250°C or more and 1320°C or less while regulating the average concentration of sulfur dioxide (SO 2 ) gas in the atmosphere within the furnace to 0.01 volume % or less.
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