高塔熔融喷浆造粒生产尿基复合肥的工艺技术

介绍闻喜复肥公司高塔熔融喷浆造粒生产尿基复合肥的工艺流程、主要设备,重点介绍HZPKJ-020混料加热器、CD-CT3/ZKL造粒机的工作原理及结构;对生产中出现的问题进行针对性的技改情况和效果,使产能、产品质量、技术指标及经济效益达到和超过设计要求;并指出生产中尚存在的问题.     

多弧离子镀与磁控溅射共沉积TiN/TiCN多层膜的高温抗氧化性能

TiN/TiCN多层膜的高温抗氧化性研究对于扩大其应用领域具有重要作用,但目前鲜见相关报道。采用多弧离子镀与磁控溅射技术以不同调制周期在304不锈钢表面共沉积TiN/TiCN多层膜。采用XRD、XPS、倒置显微镜及高温氧化试验研究了多层膜的高温抗氧化行为。结果表明:TiN/TiCN多层膜表面光滑平整、均匀致密,薄膜主要为具有Ti-(C,N)键的fcc-TiN结构;随着调制周期的减小,TiN/TiCN多层膜生长取向发生转变,且具有(111)晶面生长织构;随着氧化温度的升高,多层膜的显微硬度逐渐降低,氧化增重速率不断增大,且在700℃之后变化速率较快,薄膜的开始氧化温度约为750℃;随着调制周期的减小,多层膜TiN与TiCN界面层数量增多,促使晶粒细化,提高了其致密性,还隔断了缺陷贯穿薄膜的连续性,显著降低了薄膜的孔隙率,致使O原子扩散困难,增强了薄膜的高温抗氧化性能。     

淮山佛手瓜胡萝卜混合饮料的研制

确定了淮山佛手瓜胡萝卜混合饮料的加工工艺流程和条件.经实验得到最佳工艺为:杀菌105℃,15min,最优配方:淮山4.2%,佛手瓜6%,胡萝卜3.2%,蔗糖5.4%,盐0.18%,柠檬酸0.06%.     

纳米WO3材料的制备、应用及研究趋势

结合近年来国内外相关文献，综述了纳米WO3材料的研究现状与进展，重点概述了超细WO3粉体和纳米WO3薄膜的各种制备方法及各自优缺点，并介绍了纳米WO3薄膜的稀有金属掺杂研究等；分析了纳米WO3材料的研究意义，介绍了纳米WO3材料在变色及催化等方面的应用。最后分析了纳米WO3材料应用的发展趋势。     

Characterization of residual stresses from cold expansion using spatial statistics

Residual stress fields from cold expansion have been widely used to extend the fatigue life of aircraft structures. However, the spatial statistical character of these residual stress fields has not been established and has not been incorporated in current analysis methods. The objective of this study was to establish a spatial statistical method to quantify the residual stress field around a cold expanded hole. A framework called the Spatial Analysis of Residual Stress (SpARS) was developed utilizing spatial correlation, response surface modelling techniques and statistical resampling methods to characterize the residual stress field. Our results showed that tolerance bounds on residual stress can be quantified using this method. We also demonstrated the SpARS method using recently published round robin case studies. The newly developed model will be useful for aircraft structural fatigue crack growth analyses to incorporate residual stress fields for extending inspection intervals for fatigue and fracture critical structures.     

双摄像机光笔式三维坐标测量系统研究

基于双目立体视觉传感器三维测量模型和空间坐标变换原理,采用最小二乘冗余算法,讨论了双摄像机测量空间三维点坐标的基本原理,建立了视觉测量系统的非线性测量方程.通过实验验证了双摄像机光笔式三维坐标视觉测量系统建立的可行性.     

Hybrid Petri-nets for modelling and performance evaluation of supply chains

Modelling and analysis of complex and co-ordinated supply chains is a crucial task due to its inherent complexity and uncertainty. Therefore, the current research direction is to devise an efficient modelling technique that maps the dynamics of a real life supply chain and assists industrial practitioners in evaluating and comparing their network with other competing networks. Here an effective modelling technique, the hybrid Petri-net, is proposed to efficiently handle the dynamic behaviour of the supply chain. This modelling methodology embeds two enticing features, i.e. cost and batch sizes, in deterministic and stochastic Petri-net for the modelling and performance evaluation of supply chain networks. The model is subsequently used for risk management to investigate the issues of supply chain vulnerability and risk that has become a major research subject in recent years. In the test bed, a simple productive supply chain and an industrial supply chain are modelled with fundamental inventory replenishment policy. Subsequently, its performance is evaluated along with the identification and assessment of risk factors using analytical and simulation techniques respectively. Thus, this paper presents a complete package for industrial practitioners to model, evaluate performance and manage risky events in a supply chain.     

Analysis of errors in the measurement of the volume of natural gas under standard conditions using measurement complexes that incorporate counters

A comparative analysis of techniques used to estimate the errors of measurement complexes that incorporate counters, using as an example measurements of the volume of natural gas from the Tyumen region in the range of absolute pressure 0.1-10 MPa, is conducted. Practical recommendations are given.Translated from Izmeritelnaya Tekhnika, No. 11, pp. 30–35, November, 2004.     

变频调速技术在局部通风机中的应用

变频调速技术,正是顺应了工业生产自动化发展的要求,一改普通电动机只能以额定的转速运行的固定模式,使得电动机及其负载在无须任何改动的情况下即可以按照我矿生产要求调整功率输出,从而降低电机功耗以达到设备高效运行的目的。     

Study on high rock slop anchoring technique of large rock engineering

Monitoring data from the Three Gorges Project show that the resulted tensile stresses are mainly distributed within the front section of the internal anchoring section which is often measuring 2.5 m in length. The composition of two early strength cement grout mixes marked as R3350 and R7350 was successfully developed to accelerate anchoring facilities installation and to reduce its intervention with the shiplock construction. It was measured that the ground water pH value in the sidewall slopes of the permanent navigation shiplock during the construction period was close to 8. Based on those characteristics it is concluded that the groundwater is weakly corrosive to steel material and will appear as non-corrosive to the steel wire strands embedded in the cement grout set. The advanced model of 3 MN unbonded anchor cables with double anti-corrosion protection （including the corrugated pipe） is developed to meet the needs of stabilizing the high sidewall rock slopes of the permanent navigation shiplock on the Three Gorges Project.