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江西钢厂丝带分厂是全国冷轧行业的一个中小型厂。目前年产冷轧带钢7000多吨,产品品种有:碳素结构钢,碳工钢弹簧钢及合金结构钢钢带等数十个品种,产品规格为0.06~3.0×20~160mm。 下面介绍我分厂近年来生产发展情况及前景。 1985年至1988年我分厂产量及利润变化情况见表1 相似文献
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林小孝 《冶金标准化与质量》1996,(8)
2.5 钢级分布范围 含碳量≤0.22%低碳碳素结构钢,其钢级σs≤245N/mm~2,具有优良可变形加A性能和焊接性能,可用于焊接结构件。钢级>245N/mm~2的碳素结构钢,由于含碳量位于中碳钢范围,其变形加工性能降低,特点是可焊性能明显变差,故限制应用范围。因此碳素结构钢的钢级范围上限不宜定得过高,过高实用价值不大,钢级范围上限定在σs≤285N/mm~2,较为合适。 相似文献
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电弧炉石灰石快速炼钢工艺的实践与研究 总被引:1,自引:1,他引:0
本文叙述电弧炉采用石灰石造渣,快速冶炼碳素结构钢的新工艺。实践证明:新工艺冶炼的碳素结构钢质量良好,冶炼时间比老工艺缩短46min/炉,吨钢电耗降低150kWh,钢中[N][H][O]气体含量较低。 相似文献
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为了研究热处理工艺对低合金高强钢力学性能的影响,在连续退火条件下对HC300LA钢进行了模拟试验和工业试验。采用连续退火模拟试验机模拟连退生产工艺,研究了退火温度对低合金高强钢HC300LA力学性能的影响,获得了不同强度要求的试验钢。在实际生产过程中,分别研究了不同均热时间、快冷冷速条件下低合金高强钢HC300LA的力学性能变化情况。试验结果表明,随着退火温度的提高,低合金高强钢的强度下降,断后伸长率有所提高;随着均热时间的延长,低合金高强钢的强度有缓慢下降的趋势;随着快冷冷速的增加,低合金高强钢的强度增加,断后伸长率逐渐降低。 相似文献
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Society demands high strength and environmental conscious steel and our solution is ultra fine grained steel without any rare earth alloy. We developed mathematical modelling for microstructure evolution and characterized rolling condition for ultra fine grained plain carbon steel in the tandem hot strip mill. We constructed a new tandem hot strip mill rolled at heavy reduction and low temperature in the last 3 stands in the finishing train. We produced ultra fine grained plain carbon strip with grain size of 3 microns. This steel has 30% improved strength and better formability compared to the conventional schedule rolling steel. 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):99-103
The product system of high strength low alloy steels (HSLA) produced by Wuhan Iron and Steel (Group) Corporation (WISCO) was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway wagons.In order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy plates.WISCO will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel. 相似文献
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为了优化不同钢种的LF精炼钙处理工艺,研究了高强结构钢、低碳结构钢、焊瓶钢、耐磨钢、高碳钢在LF精炼及钙处理过程中夹杂物的演变机理。结果表明,渣 钢反应时间越长,钙处理前的夹杂物变性越彻底。钙处理前焊瓶钢夹杂物以Al2O3为主,高强结构钢、低碳结构钢夹杂物以MgO Al2O3 CaO复合夹杂为主;高碳钢、耐磨钢夹杂物以低熔点的Al2O3 CaO夹杂为主。钙处理工艺会增加钢液中夹杂物数量及尺寸。控制Al2O3 SiO2 MnO复合夹杂物的关键是避免LF精炼中后期进行硅锰合金化。综合考虑各方面因素,建议焊瓶钢增加当前的钙线喂入量,高强结构钢、低碳结构钢使用轻钙处理工艺,高碳钢、耐磨钢取消钙处理工艺。 相似文献
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在分析了各种钢板复合工艺优缺点的基础上,首次提出钢管热连轧机架耐磨衬板采用爆炸焊接工艺进行复合.衬板背面选用韧性强和焊接性能好的低碳低合金结构钢,衬板工作面选用中高碳多元低合金耐磨合金钢.在此基础上,研究了两种不同钢板的爆炸复合工艺,检测了复合面的组织和性能,并研究了复合钢板的热处理工艺,着重解决了复合钢板高温热处理时的氧化和淬火冷却时的变形.新开发的复合钢板在钢管热连轧机架上具有优良的使用效果. 相似文献
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超低碳高强度BH钢板的织构发展 总被引:4,自引:0,他引:4
采用三维取向分布函数-ODF对实验室所研制的一种超低碳高强度烘烤硬化钢板不同工艺过程的织构进行了研究。结果表明,它的热轧,冷轧和退火织构之间存在一定的联系,以至于织构的发展具有遗传性。 相似文献
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钢铁材料研发的技术进展 总被引:2,自引:0,他引:2
中国的钢铁材料研发活动越来越活跃,研发领域不断拓展,先进钢铁材料不断涌现。钢铁研究总院结构材料研究所致力于先进钢铁材料的研发,取得了显著的成绩。本文综述近年来的各个钢铁材料领域研发的技术进展,包括了碳素结构钢、高强度低合金钢、合金结构钢、超高强度钢、轴承钢、不锈钢及耐蚀合金、耐热钢及合金、工模具钢,以及相关技术等。通过持续的技术研发活动,钢铁材料已经和必将不断发展和更新,形成了以“高性能、低成本、易加工、高精度、绿色化”为特征的先进钢铁材料。 相似文献
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Tacke K.-H. 《钢铁冶炼》2013,40(4):317-323
AbstractStrip casting of low carbon steels has been investigated using a laboratory twin roll machine with copper rolls. The following grades have been studied: a deep drawing low carbon (LC) steel, a LC steel with titanium addition, and a high strength low alloy (HSLA) grade. The casting behaviour of these steels has been examined, and the observed surface defects classified. Defects are most pronounced for the LC grade and significantly less for the HSLA steel and the LC steel with titanium addition. The as cast structure has been analysed. It can be modified by post-cast treatment, e.g. by normalisation or in line rolling. The mechanical properties of cold rolled and annealed strip materials and their textures are presented. Satisfactory sheet properties can be achieved both as hot band and as cold rolled sheet when adequate treatment steps are applied. Consequences for strip casting applications and future research are discussed. 相似文献