基于大数据挖掘和多系统融合的“领导驾驶舱”智能决策

“领导驾驶舱”是基于多系统数据融合打造出的企业智能管理监控平台,将大数据转换为管理者易于接受的场景和视图,使管理者能直观、便捷、形象地掌握供电公司的整体运营状况,科学、实时、高效地控制和决策。随着国网全面推进“三集五大”体系建设,公司快速发展和信息化水平的持续提升,使得各专业管理部门使用了相应的信息系统,并在使用过程中产生了海量数据。然而,这些专业数据彼此割裂,系统无法融合,数据价值未能充分挖掘,不能为公司管理者提供“瞭望公司运营全貌、实时决策依据”的企业级运营服务。自2015年10月开始,“领导驾驶舱”的应用已促使武汉供电公司挽回直接经济损失2000万元,带来了巨大的经济效益。     

微量混合稀土对共晶铝—硅活塞合金的变质作用

本文用混合稀土——铝中间合金作变质剂,研究了混合稀土对ZL108共晶铝—硅活塞合金变质前后的组织形貌及机械性能。指出,微量(0.03～0.09％)的混合稀土可使铸造铝活塞产生完全变质组织,且变质后共晶硅立体形貌呈颗粒状孤立分布,机械性能亦比钠变质时有较大提高。该变质剂熔点低、杂质少、加入工艺简便,无任何腐蚀及污染。     

粉末冶金高温金属基固体自润滑材料

对粉末冶金高温金属基固体自润滑材料的研制开发与应用情况进行了综合论述,系统介绍了固体润滑剂特征以及粉末冶金高温金属基自润滑材料的高温摩擦学特性。     

装配式中空凸轮轴凸轮材料及装配技术研究

研究了装配式中空凸轮轴的两个关键技术:凸轮材料和连接技术.本试验凸轮材料采用铁基粉末冶金材料,并对其工作表面进行宽带激光表面淬火处理.研究结果表明,经激光处理后,材料的耐磨性得到了明显的提高.凸轮与芯轴的连接采用滚花连接技术,对不同齿距的滚花式凸轮轴静连接强度及疲劳强度进行了实验研究.研究结果表明,制成的凸轮轴在静扭时的破坏扭矩约是凸轮轴实际工作扭矩的20～30倍,疲劳破坏方面亦符合工作要求.     

Microstructure and mechanical properties of Mg-6Al-0.3Mn-xY alloys prepared by casting and hot rolling

Mg-6Al-0.3Mn-xY(x=0,0.3,0.6 and 0.9,mass fraction,%) magnesium alloys were prepared by casting and hot rolling process.The influence of yttrium on microstructure and tensile mechanical properties of the AM60 magnesium alloy was investigated.The results reveal that with increasing the yttrium content,Al2Y precipitates form and the grain size is reduced.The ultimate strength,yield strength and elongation at room temperature are 192 MPa,62 MPa and 12.6%,respectively,for the as-cast Mg-6Al-0.3Mn-0.9Y alloy.All ...     

Morphological evolutions of cast and melt-spun Mg_(97)Zn_1Y_2 alloys during deformation and heat-treating

Mg_(97)Zn_1Y_2 alloy has been studied as an elevated temperature creep resistant Mg-based alloy for nearly ten years.While, the strength of the cast Mg_(97)Zn_1Y_2 alloy with long-period stacking(LPS) structure is lower than that of the commercial AZ91 alloy at room temperature.The microstructure evolutions in Mg_(97)Zn_1Y_2(molar fraction,%) alloys with LPS phase,processed by rolling and annealing the as-cast alloy and rapidly solidifying/melt-spinning and age treating at different temperatures respecti...     

Effect of graphite particle size on wear property of graphite and Al_2O_3 reinforced AZ91D-0.8%Ce composites

The graphite particles and Al_2O_3 short fibers reinforced AZ91D-0.8%Ce composites were fabricated by squeeze-infiltration technique.The researches about the effects of different graphite particle sizes on the microstructure and wear property of the composites were performed under the condition of constant contents of graphite particles and Al_2O_3 short fibers.The results reveal that the grain size of the composites changes less when the graphite particle size descends.Moreover,Ce enriches around the gr...     

纳米Cu粉末的放电等离子烧结

利用放电等离子烧结装置考察了纳米铜粉坯体的升温过程,研究了烧结速度和烧结温度对烧结等效电阻、烧结体相对密度及晶粒尺寸的影响。结果表明：在烧结过程中存在着最佳的烧结速度,当烧结速度为150℃／min时,样品致密度达到峰值88％左右,晶粒的平均尺寸接近200nm,且烧结的等效电阻随升温速度的增加而降低;纳米Cu粉末在250℃时开始烧结成块,随烧结温度提高,烧结致密度不断提高,电阻降低;但是当升温速度过快,烧结温度过高时,出现反致密化现象。