沈阳机床技改项目弱电智能化设计

沈阳机床（集团）有限责任公司的弱电智能化设计成功地将智能卡应用系统与MES有效的集成,为国内首创。生产物流条码化管理使其物流管理水平走在了国内机械行业的前列。系统采用了优化的制冷机群控、冷却塔群控技术,并在保持冷冻水大温差的条件下采用了变冷冻水温度的节能环保设计。全网冗余设计、弹性架构并融合安全的计算机网络充分保证厂区网络高可靠性、可扩展性和安全性。设计充分体现了信息化融合工业化的数字化工厂理念。     

Insights into the Reaction Network and Mechanism of Green Aerobic Oxidative Esterification of Methacrolein over Different Heterogeneous Catalysts

The oxidative esterification of methacrolein (MAL) is an important way to prepare high-valued methyl methacrylate (MMA), but this process is ultra-complex due t...     

基于层次分析法的城市反空袭防护目标选择

通过对防护目标的选定因素分析,城市反空袭防护目标指标体系包括目标层、准则层及措施层.利用层次分析法(AHP)法选定城市反空袭中的防护目标,形成数据表、建立并求解判断矩阵及一致性检验,以获得选择最优保护目标的排序权重.经实际运用,所建立的指标体系和方法更有利于合理、科学地选择防护目标.     

Robustness of interdependent multi-model addressing networks

Dear editor, Many complicated real-world systems can be considered as complex networks to analyze their macroscopic properties,e.g.,the Internet,power grids,and...     

Direct Ink Writing of Highly Conductive MXene Frames for Tunable Electromagnetic Interference Shielding and Electromagnetic Wave?Induced Thermochromism

The highly integrated and miniaturized next-generation electronic products call for high-performance electromagnetic interfer?ence (EMI) shielding materials to ...     

First-principles study of multiple-site substitutions of alloying elements in Ni-based single crystal superalloys

The development of Ni-based single crystal superalloys relies heavily on the composition design with the addition of critical alloying elements,e.g.,Re and Ru.Understanding the role of alloying effects require to know the configurations of the alloying element distribution betweenγ-Ni andγ′-Ni_3Al phases and among various non-equivalent sites.This work employed firstprinciples density functional theory calculations to study the preference of phase and site occupancy of 11 alloying elements including Al and transition metal elements:3d (Ti,Cr,Co,Ni),4d (Mo,Ru),and 5d (Hf,Ta,W,Re) in Ni and Ni_3Al.We calculated the substitution energies of 1298 triple-site doping configurations including 286 Ni Ni Ni site doping of Ni,726 Al Ni Ni site doping,and 286 Ni Ni Ni site doping of Ni_3Al with alloying elements Ni,Co,Ru,Cr,Re,Mo,W,Al,Ti,Ta,and Hf.In the dual-site and triple-site doping of Ni and Ni_3Al,all studied alloying elements preferred to occupy Ni phase rather than Ni_3Al phase.We found that the most stable defect complexes often contained the favorable substitutions of Al,Ti,Ta,and Hf for the Ni sites that stabilized the alloying elements doping at the other one or two nearest neighbor sites.The co-substitutions of various alloying elements at multiple sites are critical to understanding the strengthening mechanism of alloying elements in Ni-based single crystal superalloys.     

氯化钾结晶器搅拌选型探研

反浮选冷结晶氯化钾生产的关键在于DTB结晶器中的控速分解和控速结晶,而控速的关键在于搅拌器的调速,因此本文通过对搅拌工作原理、类型及机理的粗浅分析,在保证不影响分解和结晶速率的情况下选用合适的搅拌型式,生产实践证明:推进式轴流型搅拌较之折叶式径漉型搅拌在提高氯化钾产品的粒度方面有极大的优越性.     

SCR脱硝装置氨消耗量的计算方法探讨

本文结合《GB13323火电厂大气污染物排放标准》中的相关规定,分析了两个公司的《脱硝设计导则》中SCR脱硝装置氨消耗量的计算方法的差异,并提出了一些建议。     

德国ZWICK/ROELL 4106E熔融指数仪的使用与维护

本文对德国ZWICK/ROELL公司生产的4106E熔融指数仪的测试要求进行了简单介绍,并针对该仪器在使用与维修中出现的技术问题进行了分析和探讨,提出了相应的解决措施。