电弧炉炼钢脱磷的研究与实践

结合安龙钢铁公司的实际生产，对炼钢过程磷的含量进行分析，模拟炼钢的实际生产条件。通过试验找出了磷成分超标的原因。从炼钢炉内和钢包内脱磷热力学条件入手，对该公司的炼钢现状进行了工艺改进,达到了预期的目的。     

电弧炉炼钢脱硫的研究与实践

结合安龙的实际生产，通过对炼钢过程磷的含量进行分析，模拟安龙炼钢的实际生产条件，通过做试验找出了硫成分超标的原因。从炼钢炉内和钢包内脱硫热力学条件入手，就安龙的现状进行了炼钢工艺改进，达到了预期的目的，该经验对同类企业有一定的参考价值。     

电弧炉炼钢脱硫的研究与实践

研究了解决电弧炉炼钢中硫含量高的问题。通过对炼钢过程硫含量的分析,模拟安龙炼钢的实际生产条件,试验找出了硫成分不合格的原因。从炼钢炉内和钢包内脱硫的热力学条件入手,对安龙的现状进行了炼钢工艺改进,最后使钢中硫含量降低到炼钢要求的范围之内,达到了预期的目的。     

武钢热镀锌板进军高端汽车板市场

通常钢材中的磷越低越好。攀钢由于受场地限制等原因，铁水不具预脱磷条件，同时攀钢的含钒铁水须先提钒，成为半钢后再予炼钢，增加了炼钢脱磷的困难，影响了低磷纯净钢的生产。由此攀钢钢研院和攀钢钒成立了“半钢炼钢冶炼低磷钢工艺研究”课题组，展开了炼钢供氧制度、渣料操作以及防止钢包渣回磷等多方面的技术研究，     

模式识别方法研究影响转炉炼钢脱磷的因素

利用模式识别方法中的偏最小二乘法对转炉炼钢的磷分配比及主要影响因素进行了分析 ,用二维分类图给出了优化趋势 ,结果符合一般脱磷理论和实际 ,可以作为冶炼的参考。     

铁水预脱磷中竞争氧化问题的理论分析与生产实践

结合宝钢股份不锈钢分公司的实际生产，对铁水脱磷过程进行了物理化学理论分析，讨论了碳和磷、硅和磷的竞争氧化，通过优化脱磷荆成分、改善脱磷反应条件，提高了脱磷效率，降低了脱磷剂消耗。     

电炉降低冶炼电耗的实践

结合安龙钢铁公司的生产实际,通过对安龙电弧炉炼钢过程的能量平衡进行分析,找出了冶炼电耗高的原因和影响因素.就安龙的现状进行了设备技术改造和炼钢工艺改进.达到了预期的目的     

钢帘线制品用线材生产一贯制探讨

钢帘线制品用盘卷是线材生产的高端产品,其化学成分、物理金相等方面要求严格,从而对炼钢、连铸、轧钢工艺均应严格控制,才能生产出合格产品.本文对炼钢、连铸、轧钢各工序进行了较详细的阐述,并总结了各工艺的注意事项,有助于钢帘线用线材实际生产.     

固态炼钢新工艺研究的提出与进展

固态炼钢是由铸铁薄板通过气-固反应形式脱碳生产薄钢板带的一种新工艺。近年来,气-固反应脱碳研究主要集中于电工钢的脱碳,本文对温度、气氛条件以及保温时间对固态脱碳的影响进行了综合概述,介绍了固态炼钢新工艺的研究进度,以及对未来前景的展望。     

碱性电弧炉炼钢工艺要点

熔炼铸钢有多种方法,如转炉炼钢、平炉炼钢、电弧炉炼钢、感应电炉炼钢等,我厂铸造车间用得较多的是碱性电弧炉炼钢法。与平炉、转炉比较起来,电弧炉炼钢有其突出的优点,主要是电弧温度高,熔炼中能造成强碱性炉渣、氧化性炉渣或还原性炉渣,合金元素烧损少,能熔炼各种合金钢,并能更有效地去除硫、磷等有害杂质,提高钢液质量,而且炼钢周期短,开、停炉比较方便,容易与造型、合型等工序进行配合,便于组织生产,因此应用较广泛。碱性电弧炉氧化法炼钢工艺过程主要包括原材料准备、补炉、配料及装料、熔化期、氧化期、还原期、出钢7个阶段,本文介绍其工艺要点。     

GOST-2车轮钢低温冲击韧性研究

采用金相显微镜、扫描电镜等对GOST-2钢-60℃低温冲击韧性不合格车轮进行检验分析,结果表明：其主要原因是磷含量高、MnS夹杂多、存在带状组织,且晶粒尺寸较大。在生产中通过加入铝钒元素细化晶粒,并采用低氧钢、低磷钢及超低硫钢冶炼工艺和钙处理等措施,消除了钢中的条状夹杂物,改善了车轮的低温冲击韧性,显著提高了产品的合格...     

化学镀镍磷合金在海洋环境中的腐蚀行为

将不同基材、不同磷含量的化学镀镍磷合金镀层样品在南海海洋大气环境中进行大气暴露试验,观察其腐蚀行为,并进行对比分析,优选出海洋环境耐腐蚀性能好的镀层工艺。结果表明,在海洋大气环境中,高磷镀层比中磷镀层耐腐蚀性能好;Q195基材镍磷合金镀层耐腐蚀性能优于铝基材镀层,而铝基材镀层中,LF6M基材镀层优于LF21M基材镀层,LY12-CZ基材镀层耐腐蚀性能最差;海洋大气环境中的Cl^- 是镍磷合金阴极镀层的主要腐蚀原因。     

关于E级钢电弧炉炼钢工艺的研究

分析了影响E级钢产品电弧炉冶炼质量的主要因素。通过规范控制冶炼过程中氧化期、还原期操作,减少钢液中的磷、硫等有害杂质元素以及夹杂物的含量,有效控制化学成分,提高并稳定了E级钢产品钢水冶炼质量。     

Distribution behavior of vanadium and phosphorus between slag and molten steel

The correlation of the equilibrium behaviors of phosphorus and vanadium between slag and low carbon molten steel in inert atmosphere was investigated with respect to the experimental variables of slag basicity, the (P₂O₅) and (V₂O₅) content, and the reaction temperature. The distribution ratios of phosphorus and vanadium increased with an increase in the slag basicity. The logarithms of the vanadium distribution ratio were greater by a factor of about two than those of phosphorus in the range of low slag basicity, but the difference diminished with an increase in the slag basicity. The logarithms of the vanadium distribution ratio increased linearly with an increase in the (P₂O₅) and (V₂O₅) content in the slag, while those of phosphorus remained nearly constant. The logarithms of the phosphorus and vanadium distribution ratio decreased with an increase in temperature, and the dependence on temperature was greater for the phosphorus than for the vanadium. For both the maximization of the vanadium yield and the minimization of the rephosphorization of molten steel in the steelmaking process, the ratio of N_(V2O5)/N_(P2O5), the slag basicity, the ratio of f_[P]/f_[V], and the temperature should be maximized, and the (FeO) content in the slag should be minimized.     

A Kinetic Study on the Electrodeposition of Fe-Zn-P Ternary Alloys

A kinetic study of electrodeposition of an Fe-Zn-P ternary alloy on steel in a chloride solution was carried out using a rotating disc geometry. The deposition rates of iron and zinc on steel are controlled by the rates of both electrochemical reaction and mass transfer through a diffusion layer, and that of phosphorus is controlled by the rate of electrochemical reaction. Zinc content in the Fe-Zn-P alloy increases with increased stirring speed and voltage, however, iron content decreases with increased stirring speed and voltage. Phosphorus content is almost constant with an increase of stirring speed in lower voltage ranges and decreases slightly with increased stirring speed in the higher voltage ranges.     

关于洁净钢的若干基本问题

洁净钢是针对客户提出的质量要求,钢厂不断改进工艺,装备后,逐步提高洁净度的各类钢.介绍了典型钢种的洁净度要求及近半个世纪来商用钢中杂质能达到的最低水平.钢中总氧量对钢的洁净度至关重要,列举了国内外主要钢厂精炼、凝固过程中钢中总氧量的变化及降低总氧量的相关理论.减少钢中夹杂物数量及控制其形态也是洁净钢的重要任务,讨论了脱氧产物、脱氧剂再氧化及顶渣与耐火材料成分的影响,对430系不锈钢中夹杂物控制及精炼时最佳搅拌强度作了介绍,简述了钙处理使铝镇静钢夹杂物转形的基础理论.对超低磷、超低硫钢生产的冶金原理作重点阐述,介绍了抗氢致开裂(HIC)的管线钢中超低硫和硫化物的形态控制.对钢中其它杂质元素去除的可能途径也进行了讨论.     

Phosphorus: The Noose of Sustainability and Renewability in Steelmaking

With rising ore prices and the continued demand for higher quality steels, much work has been carried out into refining and control prospects of steel chemistry. As several technologies around the world are exploring the control of phosphorus with high priority, an overview of current knowledge, ongoing research, and specific interest areas is presented. The reliance of the basic oxygen furnace steelmaking on iron ore quality is considered with regard to impurity levels, as well as the phosphorus content of direct reduced iron introduction to the electric arc furnace process. This article reviews methods to control phosphorus in steelmaking and proposes a practical approach based on laboratory-scale equilibrium experiments. The article ends by exploring energy savings in steelmaking as well as speculating on further avenues of steel production profitability.     

Effect of Annealing on Mechanical Properties and Formability of Cold Rolled Thin Sheets of Fe-P P/M Alloys

Journal of Materials Engineering and Performance - Phosphorus in steel is known to increase strength and hardness and decrease ductility. Higher phosphorus content (more than 0.05%), however,...     

双相不锈钢阀门铸件的裂纹缺陷分析及避免措施

分析了双相不锈钢阀门铸件经常出现裂纹缺陷的原因。为避免再次投产时阀门铸件裂纹缺陷的产生,制定了相应的措施:提高砂芯的退让性;严格控制钢液的化学成分,特别是磷硫元素的含量控制;添加稀土元素细化晶粒,净化钢液以提高抗裂性;清除浇冒口和补焊注意温度的控制。结果表明,通过上述措施后,重新投产的阀门铸件没有裂纹缺陷。