粗钢检测

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冶炼过程中夹杂物的生成与控制检测方案(扫描电镜)

对现场实际冶炼条件下夹杂物的生成进行了取样跟踪,考察了包括齿轮钢、锚链钢、硬线钢、轴承钢以及弹簧钢等诸多钢种在生产条件下钢液中全氧和夹杂物的变化规律,其中铝镇静钢在电炉出钢时为FeAl脱氧并喂Al线,因而LF精炼开始时的夹杂物以Al2O3、MnS以及二者的复合夹杂为主,喂SiCa线进行钙处理后,夹杂物转变为Al2O3-CaO复合夹杂;非铝镇静钢在电炉出钢时加入复合脱氧造渣剂(以CaC、SiC为主),因而LF精炼开始时的夹杂物以MnS夹杂和SiC夹杂及它们的复合夹杂为主,中包中的夹杂物以MnS夹杂、CaO-SiO2-Al2O3含量较高的复合氧硫化物为主;轴承钢和弹簧钢的VD工位的夹杂物以尺寸较小的Al2O3、CaO、SiO2的球状复合夹杂和CaS夹杂为主,且其评级较高,因而冶炼过程中应加强对球状氧化物的去除力度。作者从加强扩散脱氧和精炼渣等方面分别对铝镇静钢和非铝镇静钢进行控制后发现,铝镇静钢试验炉次喂线后全氧达到最低,表明优化后的精炼渣具有较强的吸附铝脱氧后所生成的Al2O3夹杂的能力;非铝镇静钢成品轧材的全氧含量在0.0027~0.0029%之间,基本保持稳定。从夹杂物方面考虑,两个钢种中的终点夹杂物均为细小、弥散分布的复合夹杂物,非铝脱氧钢的终点夹杂物中未发现单独的Al2O3夹杂。
检测样品: 粗钢
检测项: 含量分析

北京欧波同光学技术有限公司

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钢及其合金中S元素检测方案(ICP-AES)

Steel manufacturers conduct quality control testing for a range of metals and trace elements to ensure the grade and performance of their final product. The Standardization Administration of China uses their GB/T 20125-2006 standard “Low-alloy steel – Determination of multi-element contents – Inductively coupled plasma atomic emission spectrometric method” to control the quality of manufactured steel products. Different grades of steel have different specifications for elemental content, with most steel and stainless steel grades required to have less than 0.05 % by weight of Sulfur and 0.04 % by weight of Phosphorus. With the Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) technique easily able to measure elements at this concentration within a sample, laboratories are looking beyond whether an instrument can ‘do the job’ to whether a specific instrument can improve their sample throughput, lower their costs, simplify sample preparation and instrument operation, and deliver reliable results throughout the analysis of a large batch of samples. 2 This application note demonstrates the performance and benefits of Agilent’s 5100 Vertical Dual View (VDV) ICP-OES instrument in the analysis of steel samples, using the GB/T 20125-2006 method. The instrument offers many advantages for this application, which involves the rapid analysis of a large number of challenging steel samples.
检测样品: 粗钢
检测项: 含量分析

安捷伦科技(中国)有限公司

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仪器信息网行业应用栏目为您提供60篇粗钢检测方案,可分别用于,参考标准主要有《HJ 777-2015 空气和废气 颗粒物中金属元素的测定 电感耦合等离子体发射光谱法》等