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。     

未来弹性与AES

介绍了未来弹性的概念,对将未来弹性引入AES评估标准的优点进行了探讨,以来来弹性的观点分析了第二轮AES候选算法的遴选并提出了具体建议。     

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...     

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.     

加工电机铜套用的钻钹夹头

我厂生产的永磁直流电机,使用直径20毫米的铜套。它批量大,工序多。我们按铜套的生产工序设计了一付可以同时装夹中心钻、麻花钻和铰刀等四把刀具的夹头,具体如图所示。     

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。     

Infrared emission properties and energy transfer in ZnO-SiO2:Yb composites

Intense near-infrared emission at 1 μm has been obtained in ZnO-SiO₂:Yb³⁺ composites via a facile sol-gel method upon broadband ultraviolet light excitation. Systematic optical measurements including static and time-resolved photoluminescence have been performed to elucidate the energy transfer from ZnO quantum dots to Yb³⁺ ions. The dependence of energy transfer efficiency on Yb³⁺ concentration has been investigated in detail. Codoping with Li⁺ ions leads to about twice enhancement of the near-infrared luminescence intensity around 1 μm at room temperature. The enhancement in the luminescence intensity could be mostly attributed to the modification of the local symmetry around Yb³⁺ ions by codoping with Li⁺ ions.