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首页> 外文会议>New developments on metallurgy and applications of high strength steels >METALLURGICAL ASPECTS OF HIGH-STRENGTH STEEL GRADES AND THEIR PROCESSING THROUGH CSP® TECHNOLOGY
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METALLURGICAL ASPECTS OF HIGH-STRENGTH STEEL GRADES AND THEIR PROCESSING THROUGH CSP® TECHNOLOGY

机译：高强度钢的冶金方面及其通过CSP®技术的加工

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摘要

The compact strip production (CSP) technology today accounts for around 10 per cent of the world´s hot-strip production with a total rated capacity of more than 45 million tpy. In traditional thin-slab technology, steelmaking is electric arc melting using scrap, direct-reduced iron as well as hot-briquetted iron as starting material and ladle furnace operations are applied for the refining process. The caster supplies thin slabs with thicknesses between 50 and 90 mm, which are hot charged without intermediate cooling and rolled to hot strips in the finishing mill. The product range has been continuously extended during the last 15 years. Today, CSP plants are used to produce almost the full range of steel grades which are needed for further processing by markets all over the world. Extensive developments have been carried out in the last few years with respect to the thermo-mechanical controlled processing of micro-alloyed high-strength steel grades which enable the test and commercial production of pipe line steel grades on thin slab casting lines. Today, the CSP technology based production of pipe grades up to API X70 becomes reality. API X80 and HIC resistance grades are still in trial stage but will soon enter standard production. The present report describes the ongoing development work concerning the metallurgical basisc as well as issues related to the production of high-strength steels with excellent engineerig properties like weldability and toughness which could be used for both longitudinal and spiral welded line pipes.
机译：如今，紧凑型带材生产（CSP）技术约占全球热轧带钢产量的10％，总额定产能超过4,500万吨。在传统的薄板坯技术中，炼钢是使用废料，直接还原铁以及热硬铁矿作为原料进行电弧熔化，并且将钢包炉操作用于精炼过程。连铸机提供厚度在50到90毫米之间的薄板坯，这些板坯无需中间冷却即可进行热装，并在精轧机中轧制成热轧带钢。在过去的15年中，产品范围不断扩大。如今，CSP工厂已用于生产几乎所有等级的钢种，这是全球市场进行进一步加工所需的。在过去的几年中，在微合金高强度钢种的热机械控制加工方面已经取得了广泛的进展，这使得能够在薄板坯连铸线上进行管道钢种的测试和商业化生产。如今，基于CSP技术的管材生产达到API X70成为现实。 API X80和HIC电阻等级仍处于试验阶段，但即将进入标准生产。本报告介绍了有关冶金基础的正在进行的开发工作，以及与生产可用于纵向和螺旋焊缝管线管的可焊性和韧性等优异工程性能的高强度钢有关的问题。

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