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首页> 外文会议>41th Annual Conference of Metallurgists of CIM International Symposium on New Technology Implementation Metallurgical Processes Aug 11-14, 2002 Montreal, Quebec, Canada >'An Important quality issue in steel industry: Inclusions characterization'
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'An Important quality issue in steel industry: Inclusions characterization'

机译：“钢铁行业的重要质量问题：夹杂物表征”

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In this ever competitive world steel market, the key point to market share is quality and quality means stringent composition control and minimum number of undesirable and detrimental non-metallic inclusions, N.M.I's. It is widely accepted that N.M.I's have adverse effects on mechanical properties of steels in service. In order to minimize N.M.I's concentration in steels, the mechanisms of their formation ought to be understood and for that reason the following characteristics of N.M.I's are vital; 1. Chemistry 2. Morphology 3. Size and Size distribution. There are two basic methods of investigating N.M.I's; namely insitu analysis, i.e. metallography, and separate study, i.e. extraction of N.M.I's. The current article considers insitu analysis of inclusions while the second article reports some works on the electrolytic extraction of N.M.I's. The concept of steel cleanliness is of great importance particularly in case of sheets and coils used in automotive industry and home appliance production. The sheet metals are expected to have good surface finish and high ductility and formability. Sheet metals may also be used in building industry for roofing applications and is generally in a corrugated form. Therefore, the capability of the steel to corrugation is very crucial and is directly related to the surface quality and internal cleanliness of the steel. Further more, since the final rolling pass and corrugation operation are carried out at room temperature, the presence of N.M.I's exacerbates the critical issue of quality.
机译：在这个竞争激烈的世界钢铁市场中，市场份额的关键是质量和质量意味着严格的成分控制和最少数量的不良和有害非金属夹杂物，即N.I. N.M.I对使用中的钢的机械性能有不利影响已被广泛接受。为了使N.M.I's在钢中的浓度最小化，应了解其形成机理，因此，N.M.I's的以下特征至关重要。 1.化学2.形态3.尺寸和尺寸分布。调查N.M.I的方法有两种基本方法：即原位分析，即金相学，以及单独的研究，即提取N.M.I。本文考虑对夹杂物进行原位分析，而第二篇文章则报道了有关电解提取N.M.I's的一些工作。钢清洁度的概念非常重要，尤其是在汽车工业和家用电器生产中使用的板材和卷材的情况下。预计钣金具有良好的表面光洁度以及高延展性和可成形性。钣金也可以在建筑行业中用于屋顶应用，并且通常呈波纹状。因此，钢的波纹化能力非常关键，并且直接关系到钢的表面质量和内部清洁度。而且，由于最终的轧制道次和瓦楞生产工序是在室温下进行的，因此N.M.I的存在加剧了质量的关键问题。

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