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2. 发明公开

EP2199422A1 Low-carbon precipitation-strengthened steel for cold heading applications 审中-公开
标题翻译： Kohlenstoffarmer，ausscheidungsgehärteterStahlfürKaltstauchanwendungen
公开(公告)号：EP2199422A1
公开(公告)日：2010-06-23
申请号：EP08021703.7
申请日：2008-12-15
申请人： Swiss Steel AG , ArcelorMittal Hamburg GmbH , Instytut Metalurgii Zelaza
发明人： The designation of the inventor has not yet been filed
IPC分类号： C22C38/00 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/14 , C22C38/16 , C21D8/06 , C21D9/52
CPC分类号： C22C38/02 , C21D7/02 , C21D8/065 , C21D2211/002 , C21D2211/004 , C22C38/002 , C22C38/04 , C22C38/08 , C22C38/14 , C22C38/16
摘要： A rolled steel wire or rod suitable for the production of cold headed products without the application of heat treating operations has a chemical composition, by weight, of:
0.04% ≤ C ≤ 0.1%
1.8% ≤ Mn ≤ 2.0%
0.15% ≤ Si ≤ 0.30%
S ≤ 0.025%
P ≤ 0.025%
Cr ≤ 0.50%
Mo ≤ 0.08%
Ni+Cu ≥ 0.30%
0.01% ≤ Al ≤ 0.05%
V ≤ 0.05%
10 ppm ≤ B ≤ 30 ppm
N ≤ 100 ppm
Ti ≥ 0.06%

the remainder being iron and impurities resulting from the production process. The steel has a cementite-free microstructure comprising a predominant phase, a minor phase and MX-precipitations distributed within the predominant phase, the predominant phase consisting of bainitic ferrite, the minor phase comprising retained austenite and optionally martensite with a size of 2 to 3 µm, the relative amount of the minor phase amounting to
摘要翻译：适用于不用热处理操作生产冷头产品的轧制钢丝或棒材，其化学组成按重量计：0.04％‰¤‰0.1％1.8％‰‰‰‰2.0％0.15 ％‰¤‰‰0.30％‰‰0.025％‰‰0.025％‰¤¤¤¤¤¤‰‰¤¤¤¤¤¤¤¤¤‰‰‰‰‰‰‰‰‰‰¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤ ppm‰¤B‰¤30 ppm N‰‰100 ppm Ti‰¥0.06％其余为生产过程中产生的铁和杂质。该钢具有不含渗碳体的显微组织，其包含分布在主相中的主相，次相和MX析出物，主要相由贝氏体铁素体组成，次相包含残余奥氏体和任选的马氏体，尺寸为2至3 μm，相的相对量为<20体积％。

3. 发明公开

EP0338569A3 Method of disintegration of ferroalloys 失效
标题翻译： FERROALLOYS的分解方法
公开(公告)号：EP0338569A3
公开(公告)日：1990-01-17
申请号：EP89107161.5
申请日：1989-04-20
申请人： INSTYTUT METALURGII ZELAZA IM. STANISLAWA STASZICA
发明人： Kulinski, Zdzislaw , Mitka, Boleslaw , Godek, Jerzy , Gladala, Krzysztof , Czarnik, Jan , Prajsnar, Tadeusz , Bulkowski, Lech
IPC分类号： B22F9/16 , C25B1/00 , B22F9/02 , B22F9/30
CPC分类号： C21C7/064 , B22F9/023 , B23K35/0255 , B23K35/365 , C21C7/0006 , C21C7/04 , C21C7/06 , Y02P10/138
摘要： This invention relates to a method of disintegration of ferroalloys to powder form with grain size below 3 mm and particularly for disintegration of complex ferroalloys to be used for an afterfurnace treatment of liquid steel in a ladle, as well as for other non-metallurgical purposes, wherein a charge in the form of lumped ferroalloy with the piece size above 3 mm and preferably from 3 up to 20 mm is subjected to the action of a hydrogen ion field during the electrolysis of water which contains a small addition of easily dissociating salts. During electrolysis, ferroalloy is being hydrided to such a concentration of ions and/or atoms in the alloy that it undergoes a gradual multi-directional brittle hydrogen cracking thus obtaining a powder with grain size usually below 2 mm, with the amount of undersize particles smaller than 0,075 mm below 10 percent and with the amount of oversize particles greater than 2 mm below 50 percent, which if required, is further disintegrated by delayed hydrogen cracking in a conditioning operation.
摘要翻译：本发明涉及一种将铁合金粉碎成粒径小于3mm的粉末形式的方法，特别是用于在钢包中用于液态钢的后炉处理的复杂铁合金的分解以及用于其它非冶金目的的方法，其中片状尺寸高于3mm，优选3至20mm的块状铁合金形式的电荷在电解水中受到氢离子场的作用，该电解包含容易解离的盐的少量添加。在电解过程中，铁合金被氢化成合金中的这种离子和/或原子的浓度，使其经历逐渐的多方向脆性氢裂解，从而获得粒径通常低于2mm的粉末，其中尺寸较小的颗粒量较小超过0,075毫米低于10％，超大颗粒的量大于2mm，低于50％，如果需要，在调节作业中通过延迟氢裂解进一步分解。

4. 发明公开

EP0338569A2 Method of disintegration of ferroalloys 失效
标题翻译： Verfahren zumZertrümmernvon Eisenlegierungen。
公开(公告)号：EP0338569A2
公开(公告)日：1989-10-25
申请号：EP89107161.5
申请日：1989-04-20
申请人： INSTYTUT METALURGII ZELAZA IM. STANISLAWA STASZICA
发明人： Kulinski, Zdzislaw , Mitka, Boleslaw , Godek, Jerzy , Gladala, Krzysztof , Czarnik, Jan , Prajsnar, Tadeusz , Bulkowski, Lech
IPC分类号： B22F9/16 , C25B1/00 , B22F9/02 , B22F9/30
CPC分类号： C21C7/064 , B22F9/023 , B23K35/0255 , B23K35/365 , C21C7/0006 , C21C7/04 , C21C7/06 , Y02P10/138
摘要： This invention relates to a method of disintegration of ferroalloys to powder form with grain size below 3 mm and particularly for disintegration of complex ferroalloys to be used for an afterfurnace treatment of liquid steel in a ladle, as well as for other non-metallurgical purposes, wherein a charge in the form of lumped ferroalloy with the piece size above 3 mm and preferably from 3 up to 20 mm is subjected to the action of a hydrogen ion field during the electrolysis of water which contains a small addition of easily dissociating salts. During electrolysis, ferroalloy is being hydrided to such a concentration of ions and/or atoms in the alloy that it undergoes a gradual multi-directional brittle hydrogen cracking thus obtaining a powder with grain size usually below 2 mm, with the amount of undersize particles smaller than 0,075 mm below 10 percent and with the amount of oversize particles greater than 2 mm below 50 percent, which if required, is further disintegrated by delayed hydrogen cracking in a conditioning operation.
摘要翻译：本发明涉及一种将铁合金粉碎成粒径小于3mm的粉末形式的方法，特别是用于在钢包中用于液态钢的后炉处理的复杂铁合金的分解以及用于其它非冶金目的的方法，其中片状尺寸高于3mm，优选3至20mm的块状铁合金形式的电荷在电解水中受到氢离子场的作用，该电解包含容易解离的盐的少量添加。在电解过程中，铁合金被氢化成合金中的这种离子和/或原子的浓度，使其经历逐渐的多方向脆性氢裂解，从而获得粒径通常低于2mm的粉末，其中尺寸较小的颗粒量较小超过0,075mm低于10％，超大颗粒的量大于2mm的50％以下，如果需要，在调节作业中通过延迟氢裂解进一步分解。

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