热连轧精轧机组温度模型的改进

从实际生产数据入手,研究了温度模型设定精度的现状及设定精度与各影响因素之间的关系,同时还消化了原来的温度模型程序并将其移植到微机上.经大量的离线统计回归分析,提出了一个行之有效的温度模型改进方案.该改进方案的思路同样适合其他热轧生产线.     

复杂回转面刀具的计算机辅助造型与加工过程仿真

加工旋转锉复杂回转面刀具时，砂轮与工件的相对运动轨迹一般是复杂运动，只有用多坐标联动的数控装置才能实现，为了验证理论推导和计算的正确性，本文对旋转锉的加工过程进行了计算机仿真，为充分利用国内外在计算机图形学和CAD方面的最新成就，本文在重庆大学机械传动国家重点实验室的Sum-CAD工作站上对引进的I-deas软件包进行了应用开发，第一次将计算机造型应用于复杂回转面刀具有成形与加工，该工作站及三维图形功能对于特种回转面刀具是一个强有力的研究工具。     

冷热敷治疗踝关节损伤

本文通过冷热敷和功能锻炼治疗踝关节损伤的试验，表明冷热治疗踝关节韧带损伤时间短，疗效好，在运动实践中可提倡．     

机械专业教学改革初探

为适应新时期特区建设的发展要求 ,培养合格人才 ,机械专业必须深化教学改革。本文结合我校办学实践 ,提出实施机械专业改革的指导思想、教学体系及其落实措施。     

炼钢─连铸─热轧直接热装一体化计划

从计划角度重点分析了钢铁生产中炼钢、连铸、热轧三者之间联接的较高模式－直接热装轧制计划系统的实现方式，并给出了较为具体的方案。     

钢管单芯棒圆周剪切法的实验研究

介绍钢管圆周剪切的另一种方法－单芯棒圆周剪切法。通过运动学分析阐述了剪切金属的变形原理；实验研究证明了该方法的可行性并对切口断面质量进行了分析。     

Experimental Study on the Milling of a Ti Beta 21S

Ti Beta 21S (Ti-15Mo-2.7Nb-3Al-0.2Si) was devel op ed by TIMET in 1989. It is a metastable beta titanium alloy that offers subs tantial weight reductions over other engineering materials. Compared with common beta Ti alloys, it offers the high specific strength, good cold formability, im proved oxidation resistance, elevated temperature strength, creep resistance, an d thermal stability. Besides the common characters of titanium alloy, such as po or heat diffusivity, low elastic modulus, Ti Beta 21S has ...     

Principle of Mangling Correction of Plate-welding Section Steel and its Application

Thanks to the fantastic development of power, transportation, chemical engineering, architecture and other fields, there has been an increasing demand for new type of section steel with large sections used for construction frame, such as type-H, type-T, and type-C section steel. New types of section steel usually are long and with large cross section. Therefore, for the sake of the cost, steel plate welding structure is used home and abroad. During the welding process, welding distortion seems unavoidable. ...     

High Speed Cutting Inconel 718 with Coated Carbide and Ceramic Inserts

High speed machining (HSM) technology is one of important aspects of advanced manufacturing technology. Nickel-based superalloys have been widely used in the aircraft and nuclear industry due to their exceptional thermal resistance and the ability to retain mechanical properties at elevated temperatures of service environment over 700 ℃. However, they are classified as difficult-to-cut materials due to their high shear strength, work hardening tendency, highly abrasive carbide particles in the microstructur...     

关于高校青年教师思想政治工作的思考

高校青年教师是21世纪中国高等教育的希望，他们的政治思想素质直接影响到高校培养人才的质量，因此，加强高校青年教师的思想政治工作意义重大．