外文翻译---包钢环形炉管坯加热温度测试和研究.docx

附录附录A（英文文献）Heating Temperature Measurement of Slab Rotary Furnace in BTCO Xu Zhanhai. Liu Guangting(Baotou Iron and Steel (Group) Corporation Seamless Steel Tube Plant, Baotou 014010, China) Abstract: the ring of continuous casting billet heating furnace actual temperature within the test equipment and methods to the CCS application, for example, analyzed the effect of furnace heating current, the corresponding improvements, and to explore the mathematical model control and the delay strategy. Keywords: Annular Heating: Temperature test: mathematical models: delay strategy; black box Key words: TC307 Document code: A Article ID :1001 -6988 (2009) 03-0007-02 Heating Temperature Measurement of Slab Rotary Furnace in BTCO XU Zhan-hai, LIU Guang-ting (Seamless Stell Tube Plan, t (Group) Corporation., Baotou 014010, Chin, a) Abstract: The high temperature measurement equipment and method for the heating of continuous casting slab in the annular furnace are introduced. Based on the examples of applications in BTCO, the heating effect is analyzed, the advanced means are given, and the mathematical model and delay strategy are discussed. Key words: annular furnace; temperature measurement; mathematical model; delay strategy; black box Rail steel furnace operation optimization goal is to meet the requirements of rolling process and the billet cross-section billet heating temperature under conditions of temperature of the furnace fuel consumption at least. Unable to accurately grasp the billet heating furnace curve. Commonly used method is by measuring the surface temperature on the slab after the release into the value or billet rolling mill billet heating conditions to estimate the situation. Happens to be rolling in the furnace, people will have big operating blindness, in order to time out of steel, often leaving a large surplus amount of temperature will not only result in waste of fuel, and burning by oxidation, such as billet damage, sometimes resulting in steels. Billet heating furnace through the process of testing and results analysis, quantitative research billet gas temperature distribution and variation of temperature in the furnace and billet cross-section corresponding relationship between temperature variation, the influence of different types of factors and the quality of billet heating furnace structure problems, as the furnace yield, low cost, high-quality, less oxidation to provide diagnostic methods and improvements. In this paper, high temperature temperature tester (black box), Steel Plant of Baotou Steel billet heating furnace ring dynamic temperature testing, analysis billet in the furnace temperature profile throughout the heating process to identify the existing problems and solutions . An experimental test equipment and methods 1.1 Experimental equipment High temperature test equipment by the SMT box recorder and insulation components, also called black box. Temperature Recorder Temperature range: K-type temperature range -100-1 290 , resolution of 0.5 , measurement error 0.5%: S-type temperature range of 0 1 450 ; resolution of 1.0 , measurement error 0.5%; Channels 14 channel; memory, 64 kB; temperature data 43 000: sampling cycle 25 / sl times / 8 h; data loggers working conditions, the temperature 1300 for 6h. 1.2 Experimental Methods Experiments selected ingredients, size and representative as the experimental billet billet. Living in the billets of different temperature settings and different depth holes to play, while measurement of the integrated steel billet furnace gas temperature at the top. Using K-type thermocouple, or S-type thermocouple, dual wire letter l.0 mm, insulated porcelain jacket. Recorder through the computer program, set the sample period is 1 / 20 s. Couple the hot end of the billet temperature firmly into the hole. The cold side of the positive and negative with the recorder corresponds to the positive and negative connections. At the same time recorder to record the number of channels represented by the interface billet temperature hole locations. Incubator placed in the billet ends. Cabinets filled with fire-resistant fiber felt. Blank experiment, after the release and through the roller crane is located in the experimental blank space to move, standing for some time after the temperature drop box, remove the recorder. With the computer connected to the recorder to save data to a computer, come to billet heating curve and the temperature change in the direction along the curve of the furnace. 2 Experimental results and analysis Diameter ring furnace 35 m, with high coke mixed gas fuel. Experimental billet size Q270 mmx3 300 mm, made of XCQ-16, rolling specifications for the West 219 mmx5 700 mm. Billet in the furnace experiment time 200 min. Baked slab temperature 1 280 , baked in the temperature difference on the slab 5 . 2.1 billet heating curve Billet placed in the real seabed. Billet center temperature and surface temperature under basically the same. Billets heated to 750 , billet solid transformation endothermic phase change because the heating rate becomes smaller. Billet tapping temperature 1280 , the temperature difference on the slab released 5 , the upper and lower temperature 3 . 170mm billet heating temperature after the 1 280 , then the upper and lower temperature 30 . Billet heating temperature is too large is to produce rolling stress. Perforated wall thickness uniformity of the main reasons. Heating temperature is too high because the roof is installed or the thermocouple probe into the furnace depth is inappropriate, not a true reflection of the furnace temperature, the position adjustment of the thermocouple, the measured actual furnace temperature. Billet temperature curve shown in Figure 1. Figure 1 billet heating curve 2.2 The temperature difference between the cross-section billet Billet during the phase transition temperature because of lower thermal conductivity, the maximum temperature, maximum temperature difference down to 250 . 110 min heating, the temperature on the maximum 184.7 . After the billet heating temperature reached 168 min l 300 , then the upper and lower temperature 31 . 200min heating baked, the temperature difference between upper and middle sections only 4.2 , the upper and lower temperature 3.7 , the temperature under 10 . Billet released after 5 min, the lower, upper and lower temperature to decrease, the lower temperature decreases 6.4 . Surface temperature drop of about 12 , the central temperature drop of about 3 . Released to the open rolling need from the 50s or so, baked surface and center temperature at 30 is feasible. Cross-section billet temperature curve shown in Figure 2. Figure 2 cross-section billet temperature curve 2.3 Furnace temperature Experimental method is the length of the slab, installed a thermocouple, can measure the whole furnace temperature distribution, the furnace structure, arrangement of nozzles, heat regulation, inspection point basis for improvement of layout and operations. The test tube along the direction of uniform length of 3 test points, the test found that soaking Sec billet furnace temperature is lower than the temperature, which will help further reduce the tube cross-section temperature difference of age. Help to improve the heating quality. The traditional system is still required thermal discharge on the near side of the segment are hot tube surface temperature is higher than the temperature control. Experiments show that this does not help to reduce the cross-section when the temperature difference between tube baked, not conducive to improving the quality of rolling. With the control requirements to be rolled in a long time, we must reverse the bottom, so as far as possible away from the tube door handle, and slightly positive furnace pressure control should be adopted to avoid to be released after rolling a few pieces of steel billet steel billet temperature is too low phenomenon. Experiments show that the width direction along the furnace temperature distribution differences, mainly air and heating system is not reasonable disturbance caused. Furnace temperature curve shown in Figure 3. Figure 3 gas temperature curve 2.4 The temperature distribution in billet length Billet length also affects the temperature uniformity of product quality, especially for long material, shown in Figure 4. The short expected, the length of billet temperature difference, but in the enhanced heating of the heating section, because the use of cross-fabric, high temperature is the temperature at both ends of the middle temperature is low. 3 Conclusion The foregoing analysis, a higher flame temperature oxygen combustion. Can improve the heat transfer efficiency and energy efficiency: You can get a better ignition characteristics, improved flame stability: the flame speed increases, you can expand the fire load ratio, improved flame characteristics and flame shape control; smoke reduction, can increase the production flexibility. In addition to oxygen-enriched combustion can be applied to metal heating and melting, glass melting and roasting high-temperature heating of mineral industries, heat transfer efficiency is low in those who affect productivity, increase heat transfer but does not affect product quality and not due to restricted exhaust system to increase productivity and so the heating area, the potential application of oxygen-enriched combustion will increase. References: 1 Muzhu Sheng, Zhao Yan recorded, Chen Fu. Oxy-Fuel float glass furnace technical and economic analysis and comparison J. Glass, 2008 (6) :13-16. 2 Zhai state. Oxygen burning stove Economic Analysis 【J. Industrial furnace, 2008,30 (3) :30-33. 3 JOSHI SV, BECKER JS, LYTLE G C. Effects of oxygen enrichment on the performance of air-fuel bumers Ml / / LUKASIEWICZM A. Industrial Combustion Technologies. Materials Park, OH: 1986:. 165. 4 US Environmental Protection Agency-Alternative Control Techniques Document-NOx Errussions from Utility Boilers R. EPAreport EPA-453/R-94-023, Research Triangle Park, NC: 1994. 5 KOBAYASHI H. Segregated Zoning Combustion: US, Patent 5076 779 P .1991-12-31. 6 BAZARIAN ER, HEFFRON JF, BAUKAL C E. Method for Reducing NOx Production During Air-fusel Combustion Ptocesses: US, Patent 5 308 239 P .1994-05-03. 7. LEWIS B, VON ELBE. C. Combustion, Flames and Explosions of Cases M .3 rd ed. New York: Academic Press, 1987. 8 American Cas Association.Gas Engineers Handbook M. New York: Industrial Press, 1965. 9 GIBBS BM, WILUAMS A. Fundamental aspects on the use of oxygen in combustion processes-a review cafe. J Inst Energy, 1983,56 (427): 74. 10 TURIN JJ, HUEBLER J. American Gas Association R. RepmtNo. ICR-61, Arlington: VA, 1951. 附录B（英文文献翻译）包钢环形炉管坯加热温度测试和研究许占海刘广亭（包头钢铁（集团）公司无缝钢管厂，内蒙古包头014010） 摘要：介绍了连铸钢坯在环形加热炉内加热实际温度测试的设备和方法，以在包钢中的应用为例，分析了加热炉目前的加热效果，提出相应的改进意见，并探讨了数学模型控制和待轧策略。 关键词：环形加热炉：温度测试：数学模型：待轧策略；黑匣子 中图分类号：TC307 文献标识码：A 文章编号：1001-6988(2009)03-0007-02Heating Temperature Measurement of Slab Rotary Furnace in BTCOXU Zhan-hai,LIU Guang-ting(Seamless Stell Tube Plan,t (Group) Corporation., Baotou 014010, Chin,a) Abstract: The high temperature measurement equipment and method for the heating of continuous casting slab in the annular furnace are introduced. Based on the examples of applications in BTCO, the heating effect is analyzed, the advanced means are given, and the mathematical model and delay strategy are discussed.Key words: annular furnace; temperature measurement; mathematical model; delay strategy; black box 轨钢加热炉优化操作所追求的目标是在满足轧钢工艺要求的钢坯加热温度和钢坯断面温差的条件下使加热炉的燃料消耗最少。由于无法准确掌握炉内钢坯的升温曲线通常所采用的方法是通过测量钢坯出炉后上表面温度值或钢坯进入轧机的轧制情况来估计钢坯的加热情况。在加热炉发生待轧时，人们的操作便有很大的盲目性，为了能及时出钢，往往留有较大的炉温富余量，不但造成了燃料的浪费，而且增如钢坯的氧化烧损，有时导致化钢。 通过对炉内钢坯加热过程进行测试和结果分析，可以数量化研究炉气温度分布与钢坯在炉内的温度变化规律和钢坯断面温差变化规律的对应关系，分析影响不同种类钢坯加热质量的因素及炉型结构存在的问题，为加热炉高产、低耗、高质量、少氧化提供诊断方法和改进措施。本文利用耐高温温度测试仪（黑匣子），对包钢钢管厂环形加热炉钢坯的加热过程进行动态温度测试，分析钢坯在炉内的整个加热过程的温度曲线，找出了存在的问题和解决办法。1 实验测试设备和方法1.1实验设备 测试设备由SMT高温温度记录仪和保温箱组成，也叫“黑匣子”。温度记录仪测温范围：K型测温范围-1001 290，分辨率0.5，测量误差0.5%：S型测温范围01 450；分辨率1.0，测量误差0.5%；通道数14通道；内存64 kB;温度数据43 000个：采样周期25次/s-l次8 h；数据记录仪工作条件，温度1300下6h1.2实验方法 实验选定成分、尺寸有代表性的钢坯作为实验坯。在钢坯上不同住置和不同深度打测温孔，同时测量钢坯上方炉气的综合温度。使用K型热电偶或S型热电偶，偶丝函l.0 mm，外套绝缘瓷管。通过计算机对记录仪进行编程，设定取样周期为1次/20 s。 将电偶热端紧紧插入钢坯测温孔中冷端的正负极与记录仪的正负极对应连接同时记录下记录仪接口的通道数所代表的钢坯测温孔的位置。保温箱放置在钢坯端部。箱体内填满耐火纤维毡。实验坯出炉后，通过辊道和天车将实验坯移至空地处，静置一段时间，待箱体温度下降后，取出记录仪。通过与计算机相连，将记录仪中保存的数据传输到计算机中，得出钢坯升温曲线和炉温沿炉长方向的变化曲线。2 实验结果及分析 环形炉中径35 m，采用高焦混合煤气燃料。实验坯尺寸为Q270 mmx3 300 mm，材质为XCQ-16，轧管规格为西219 mmx5 700 mm。实验坯在炉时间200 min。钢坯出炉温度1 280，出炉钢坯上中温差5。2.1钢坯加热曲线钢坯放置在实底床上钢坯的中心温度和下表面温度基本一致。钢坯加热到750时，钢坯的相变区因为相变吸热升温速率变小。钢坯出炉温度1280，出炉钢坯上中温差5，上下温差3。加热170mm后钢坯温度达到1 280，此时上下温差30。钢坯的加热温差过大是使轧件产生内应力影响穿孔壁厚均匀性的主要原因。加热温度过高的原因是炉顶热电偶的安装位置或探入炉内深度不合适，没有真实反映炉内温度，经对热电偶位置调整，测得真实炉内温度。钢坯升温曲线见图1。图1钢坯的升温曲线2.2钢坯的断面温差 钢坯的温差在相变时因为导热系数降低，温差最大，上下最大温差达到250。加热110 min时，上中温差达到最大184.7。加热168 min后钢坯温度达到l 300，此时上下温差31。加热200min出炉时，上中断面温差只有4.2，上下温差3.7，中下温差10。钢坯出炉5 min后，中下、上下温差继续减小，中下温差减小6.4。表面温度降约为12，中心温度降约3。从出炉到开轧需要50s左右，出炉表面与中心的温差在30是可行的。钢坯的断面温差曲线见图2。图2钢坯的断面温差曲线图2.3炉气温度 实验方法是在钢坯的长度方向安装多支热电偶，可以测得全炉炉气温度的分布，为炉型结构、烧嘴位置布置、供热调节、检测点布置和操作改进提供依据。 本次测试沿管坯长度方向上均布了3个测试点，通过测试，发现均热二段的炉气温度低于钢坯温度，这样有利于进一岁减小管坯的断面温差有助于提高加热质量。传统的热工制度依然要求对在靠近出料端的均热段的炉温要高于管坯的表面温度进行控制。实验表明，这样不利于降低管坯出炉时的断面温差，不利于提高轧制质量。采用上述控制要求在长时间待轧时，要反转炉底，使管坯尽量远离处理炉门，并且炉压要采用微正压控制，避免出现待轧后出炉钢坯有