镀锡线上张力矫直机的工作

张力矫直机的安装除了改进进料系统方便操作之外,在带材板形上也有大的改善,并且提高了生产率,增加了产量。运转问题也经受了检验。     

基于模糊逻辑的人员雇用计划─—适用于面向需求和员工的人员雇用

由于受到市场的压力，各个行业和各种等级的企业越来越多地被迫充分发挥其现有的弹性潜力。弹性劳工雇用模式的新规定，作为符合需求作业时间的先决条件，是这方面的重要推动力，它由立法人和劳资双方在近期内所提出。在此，描述了一个人员计划系统，该系统使弹性潜力有利于为企业增强实力，以及为员工走向自组织拥有更多的自由空间提供机会。     

提高金属耐磨性的电镀复合层

<正> 1.导言在现代技术中,涂层与薄膜是极端重要的。在最终成形前后应用涂层,无疑是本世纪科学发展中增长最快的领域之一。对日益增长的抗磨损、抗腐蚀……或为节能目的而对轻质材料提出的需要,是材料发展和系统设计领域中面临的持久的挑战。     

LASER CLADDED TiCN COATINGS ON THE SURFACE OF TTTANIUM

Laser cladded coatings of TiCN were produced on the surface of titanium. To obtain the optimal techniques, several conditions were tested by varying the laser scanning rate. The choice of shielding gas was also studied. The cladded coatings were then evaluated from the surface mechanics point of view based on their microhardness. The microstructure of some interesting samples was investigated by optical micrographs （OM）. The results showed that under the condition of fixed pulse frequency and pulse width, the laser scanning rate and the shielding gas are the main factors influencing the components of coatings. TiCN coatings were decompounded and oxidized during the cladding process in the condition of no shielding gas of N2. X-ray diffraction results indicated that the composite coatings composed of TiCN, TiC, Ti2N, and TiO2 were produced using appropriate techniques. The results indicated that the best condition in terms of the surface microhardness is obtained when the scanning rate is 1.5mm/s, the pulse frequency is 15Hz, the pulse width is 3.0ms, and N2 is chosen as the shielding gas. The microhardness of the composite coatings is about 1331kg · mm^-2, which is about 4 times that of the substrate. The optical micrographs indicated that the cladding zone is made up of TiCN, TiO2 and some interdendritic Ti, but the diffusion zone mainly consists of the dendrites phase, and the cladded depth is about 80μm, which is more than 2 times that of the laser nitrided sample. There were no microcracks or air bubbles in the cladded sample, which was cladded using the above optimal techniques.     

《地质学教育杂志》发行二十年

十九年前,《地质学教育杂志》首次刊行于世,设计大胆、醒目、新颖,大开本,每年计划发行五期.其宗旨是对广大的地学教育工作者开卷有益.在1965年以前,《杂志》的发行为每年四期,版本略小,照片也有限.推行这一改革的是《杂志》的新主编Robert E·Boyer, 他在一篇社论中表示一定要让《杂志》尽可能满足从事各级教学工作的地质学教师的需要.翻看1965年2月号《地质学教育杂志》,并将其内容与最近几期的内容相比,既使人感到振奋,又叫人深思.使人     

用辅以微信息处理机的热分析法检测铸铝合金质量

一种不需进行常规金相检验而用冷却曲线分析的新技术,已被福特公司开发并在生产中用于现场快速监控Essex铝-硅合金熔体。从含有不同原始铝晶粒和共晶硅熔体得到的冷却曲线利用微处理机进行数学分析。这种新技术通过冷却曲线进行微分及随后进行的相变区域积分这两种数学运算,得到监控熔体质量的峰值读数。一旦确立了足够的峰值读数与组织的关系,则可在不取金相试样的情况下预测任何熔体的铸造组织。     

超高压变压器和SF_6绝缘封闭母线间两种型式过渡的连接问题及其检查与维护

作者在对SF_6绝缘封闭母线和超高压变压器之间的两种型式过渡连接作了简短叙述后,对其在结构,检查和运行中所遇到的主要问题作了说明,指出了新的特点。