-
7261.2014年宏观经济及国内钢铁市场展望
[综合,黑色金属冶炼和压延加工业] [2014-03-28]
从主要经济体来看，2014年美国经济复苏前景较好，有望成为全球经济的推动力，而日本和欧元区均存在不确定因素，经济仍然存在下滑风险；我国经济仍然以稳定增长为主基调，增速预期与2013年水平相当，呈现小幅波动走势。2014年我国钢铁行业供求矛盾预期出现好转，但仍然维持供过于求的局面，新的一年钢铁业将面对严峻的环保压力与结构调整的艰巨任务，由于政策因素与贸易环境趋于恶化，我国钢铁出口压力仍较大。
关键词：经济；美国；日本；欧元；钢铁；出口；供求
-
7262.钢冷却过程中膜状沸腾的计算流体动力学模拟
[黑色金属冶炼和压延加工业] [2014-03-28]
关键词：钢铁;射流冲击冷却;膜状沸腾；CFD；VOF；热传系数
-
7263.带钢热轧机电气回路的应用
[黑色金属冶炼和压延加工业] [2014-03-27]
This paper introduced the application of the loop on the hot strip mill.The loop mainly support the strip steel,form the loop variable which can adjust the dynamic speed of the mill,keep the pulling force of the strip steel between the framework,participate the speed control of the framework of the finishing rolling and the quality of the strip steel is ensured.
关键词：钢铁；回路；带钢
-
7264.轧钢厂淬火温度自动监控系统
[黑色金属冶炼和压延加工业] [2014-03-27]
In forging process,quenching temperature is the critical factor on affecting products solidity and wear resistance.In order to guarantee products quality and improve work efficiency,it is very essential to monitor and control quenching temperature automatically.To keep quenching temperature in normal range,a novel automatic supervisory control system based on SCM minimum system was designed.By selecting appropriate sensor and corresponding signal processing,the system realized functions of many furnace temperature supervisory,temperature excursion alarming and temperature regulating By simulation results,the system can realize automatic and intelligent supervisory,also,the system has characteristics of simple hardware,high reliability,powerful functions and strong practicality.
关键词：钢铁；淬火温度；自动监控；模拟；信号处理
-
7265.基于双场检测的带钢表面缺陷检测的自适应预处理方法
[黑色金属冶炼和压延加工业] [2014-03-27]
A new Processing flow is put forward. Firstly, the suspected defect images are filtered out, and only the images that contain defects can be processed in the follow programs. Secondly, the retained suspected defect images are divided into two categories. Different categories are handled by different process. The simulation experiment result shows that: it not only makes full use of the advantages of the double field method, and greatly reduces the image data quantity, at the same time ensuring the real-time of the system.
关键词：钢铁；带钢；缺陷检测；实时
-
7266.表面渗铝氧化处理后8407钢的抗熔损性能研究
[黑色金属冶炼和压延加工业] [2014-03-27]
The melting-loss properties of specimens with aluminization and oxidation treatment and without treatment in liquid aluminum alloy of ADC 12 under rotation condition were evaluated by weight loss method.Sample surface conditions were observed by digital camera and microstructures of sample cross sections were observed by metallographic microscope after melting-loss test.Finally,the anti-melting-loss mechanism of oxide film under dynamic condition was clarified.The results show that the formed Fe3O4·Al2O3 film can improve dynamic melting-loss resistance due to isolating steel substrate from liquid aluminum.
关键词：钢铁；8407钢；室温硬质阳极化；熔损性
-
7267.冷却过程中钢板的材料模型
[黑色金属冶炼和压延加工业] [2014-03-27]
The time-dependent inhomogeneous temperature distribution in steel plates during the cooling increases thermal-strains which,in turn,generate plastification and thus residual stresses.Moreover,phase transformation from the parent austenite phases into a product phase typically entails not only metallurgical strains but also accounts for transformation induced plasticity (TRIP),which again generates transformation related residual stresses.A unified material model that consisting of all relevant contributions to the total strain rate,i.e.,elastic,plastic,thermal,metallurgical and TRIP strain contributions could be built in this paper.
关键词：钢铁；钢板；冷却；相位变换；残留应力；材料模型
-
7268.基于人工神经网络之反向传播算法的50A1300钢铁热变形流变应力的预测
[黑色金属冶炼和压延加工业] [2014-03-27]
The researches of non-oriented silicon steel are mainly focused on the effect of main processing parameters on the microstructure and magnetic properties,but there have been few studied about its flow stress until now.In this paper,the hot deformation of non-oriented silicon steel 50A1300 is studied by thermal-mechanical simulation method.The hot deformation behavior of the steel is explored and the flow stress prediction of the steel is established based on a kind of BPA ANN.A piecewise method is proposed in this paper,and the prediction with this new method has good accuracy.
关键词：钢铁；热变形；流变应力；无取向硅钢；人工神经网络；反向传播算法
-
7269.钢筋表面缺陷自动检测装置的设计
[黑色金属冶炼和压延加工业] [2014-03-27]
To inspect the surface quality of steel bar,we designed an automatic system including linear camera and laser.Through the comparison among kinds of cameras,we select linear CCD to our system.The laser is also chosen by us with its high luminance and performance.Through a series of computation,we select the appropriate camera lens to our device.At last,we draw the whole detection system.This device has been used well and provides a good foundation for prospective image processing.
关键词：钢铁；表面缺陷；检测体系；线性光源；线性摄像机
-
7270.3月份国际钢市盘整运行
[黑色金属冶炼和压延加工业] [2014-03-27]
2月份国际钢市小幅下滑。其中，欧美市场下跌幅度较大。亚洲经济走势短期内存在很大的不确定性，虽然3月份亚洲市场需求会出现季节性复苏，但是仍比较有限。整体上判断，3月份国际钢市将盘整运行。
关键词：钢市；产量；需求
027-87841330