锥辊辗轧理论研究的进展

锥辊辗轧理论的研究开拓了带材轧制和随后深加工的新领域。它利用楔形轧制和异步轧制的若干特点，以构成一个新的轧制过程，提供了高效，低耗和柔性加工钢带和螺旋叶片的可能性和现实性。本文对钢带锥辊异步冷辗轧，螺旋叶片锥辊冷辗轧等程的理论研究作一较详细的阐述。以推进这方面的研究。     

碳酸化分解槽机械搅拌的改造

本文从理论及现场试验两方面介绍了如何改造碳分槽机械,并对研制的新型浆叶的功能消耗、端点线速度进行了计算、分析。     

风力发电机叶片研究

风力发电是目前最常见的新能源发电之一。风轮机的性能将直接影响风力发电效率，而风轮机中的叶片是风力发电机最核心的部分。本文详细的介绍了风力发电机中的叶片，并通过分析叶片所用材料、结构形式、检修维护及叶片的气动理论，指明了我国叶片的发展方向。旨在使我国风力发电行业能快速、可持续的发展。     

转炉煤气风机叶轮故障诊断及处理措施

对转炉煤气风机叶轮故障进行诊断,分析了故障产生的原因,提出了处理措施,延长了设备使用寿命。     

K4169合金叶片熔模铸造过程的温度场及微观组织的耦合模拟

考虑存在热传导、热辐射等实际凝固边界条件,根据相变热传导等效热容法有限元理论,对K4169合金叶片熔模铸造过程中的温度场分布进行了瞬态求解,得出了叶片纵剖面和横断面上各点处的温度值随时间的变化规律.再以此为基础,根据Rappaz等提出的等轴生长溶质扩散模型计算出每一时间步长后固相分数的变化,用此值来修正该时间步长内结晶潜热释放后的温度,再利用连续形核模型和枝晶尖端生长的动力学模型,采用胞状自动机技术,对K4169合金叶片凝固时的晶粒组织形成过程进行了耦合模拟.模拟结果与实验测试所得的金相组织相符,这为研究K4169合金叶片的高温力学性能和耐腐蚀性能奠定了重要的理论基础.     

对一次除尘风机事故的分析

通过对一次除尘风机事故的分析及计算，提出了预防风机事故的合理化建议。     

30/60万千瓦电机组汽轮机叶片钢企业标准的编制说明

根据本钢叶片钢企业标准 ,介绍了钢的牌号、采用的试验方法和交货条件。     

捷克5500m^3／min轴流式高炉鼓风机叶片损坏原因及分析

就５５００ｍ＾３／ｍｉｎ高炉鼓风机动，静叶片损坏事故发生的经过以及有关资料，从几个方面详细分析了事故发生的原因。     

TRT叶片损坏原因及防范措施

武钢于90年代初从日本引进了一台煤气透平发电机,利用5号高炉产生的煤气发电.由于高炉煤气中含有大量的烟尘及腐蚀性元素,对TRT     

无料钟炉顶料流调节阀控制模型的研究

比较研究了用于高炉无料钟炉顶的两种不同形式的料流调节阀的控制模型 ,从理论上阐述了新型叶轮式料流调节阀控制料流量的优越性。     

回水冲渣泵节能改造

针对回水冲渣泵运行的现状,通过技术分析,发现回水冲渣泵水头损失很大;并利用水泵切削方程式理论采用减小叶轮直径的方法,降低水头损失,以达到节能、经济的效果。     

Improvement of Impeller Blade Structure for Gas Injection Refining under Mechanical Stirring简

Abstract： The impeller blade structure for gas injection refining under mechanical stirring has been explored by water model experiments. A sloped swept-back blade impeller is＇proposed for the purpose. The central part of the impeller is disk- or plate-shaped, and the blades are fitted to the side of the disk or plate. In addition, a disk is put on the top side of the impeller blades. The impeller can strengthen the radial and downward flow between the blades and weaken the swirl flow in the zone above the impeller. These effects on flow phenomena are favorable for disintegration and wide dispersion of bubbles which are injected from a nozzle attached to the center of the underside of the impeller. In addition, the sloped swept-back impeller requires less power consumption. The impeller shaft should be placed away from the vessel center so as to disperse the injected bubbles widely in the bath under mechanical stirring even with unidi- rectional impeller rotation and without installing baffles. The number of gas holes in the nozzle and the direction of gas injection have a little effect on the bubble disintegration and dispersion in the bath. Highly efficient gas injection refining can be established under the conditions of proper impeller size, larger nozzle immersion depth, larger eccen- tricity and rotation speed of the impeller. The sloped swept back blade impeller can decrease the power consumption and vet improve the bubble disintegration and wide dist~ersion in the bath.     

Improvement of Impeller Blade Structure for Gas Injection Refining under Mechanical Sirring

The impeller blade structure for gas injection refining under mechanical stirring has been explored by water model experiments.A sloped swept-back blade impeller is proposed for the purpose.The central part of the impeller is disk-or plate-shaped,and the blades are fitted to the side of the disk or plate.In addition,a disk is put on the top side of the impeller blades.The impeller can strengthen the radial and downward flow between the blades and weaken the swirl flow in the zone above the impeller.These effects on flow phenomena are favorable for disintegration and wide dispersion of bubbles which are injected from a nozzle attached to the center of the underside of the impeller.In addition,the sloped swept-back impeller requires less power consumption.The impeller shaft should be placed away from the vessel center so as to disperse the injected bubbles widely in the bath under mechanical stirring even with unidirectional impeller rotation and without installing baffles.The number of gas holes in the nozzle and the direction of gas injection have a little effect on the bubble disintegration and dispersion in the bath.Highly efficient gas injection refining can be established under the conditions of proper impeller size,larger nozzle immersion depth,larger eccentricity and rotation speed of the impeller.The sloped swept-back blade impeller can decrease the power consumption and yet improve the bubble disintegration and wide dispersion in the bath.     

桨叶形状对KR法脱硫混合行为影响的数值模拟

为了改善KR搅拌法脱硫剂浪费严重的问题，开发3种新型搅拌桨改善铁水和脱硫剂的混合效果。应用CFD技术，以速度场、湍动耗散率和混匀时间为特征，描述液面的卷入能力和内部混合能力。通过对比3种桨形与传统桨形（A桨）的铁水流动结构，分析结构参数和操作参数之间的影响规律。研究结果表明，方形桨（B桨）卷入脱硫剂的能力和改善混合效果强于其他3种桨形，随转速从60r/min增加到80r/min，柱状回转区体积减小60%，死区体积减小67%，混匀时间缩短52%；D桨的下倾角和径向斜边改善了搅拌桨下方死区混合效果，随转速从60r/min增加到80r/min，死区体积减小51%，混匀时间缩短48%；C桨的卷入能力和混合效果介于D桨和B桨之间；A桨效果最差。     

脱硫装置搅拌器叶轮再制造及防腐耐磨涂层的应用研究

再制造具有优质、高效、节能、节材及环保的特点,目前在机械制造领域已引起高度重视,脱硫装置吸收塔搅拌器叶轮的再制造具有十分显著的经济效益及节能、节材效果。本文在分析脱硫装置吸收塔搅拌器叶轮失效机理的基础上,介绍了搅拌器叶轮在再制造中的主要工艺过程,重点阐述了搅拌器叶轮表面强化时的热喷涂涂层的材料与制备工艺的选择。研究及使...     

锅炉引风机叶轮积灰原因分析及对策

根据气体在风机叶轮内流动的流场,分析了粉尘在叶轮内的流动规律,分析了粉尘在叶轮叶片上的沉降机理。找出了造成叶片积灰的主要影响因素,提出了破坏或减轻灰尘颗粒在风机叶轮叶片上聚积作用的具体办法。     

VK50-3空压机转子事故分析及处理

通过对VK50-3型空压机转子结构、运行状况、损坏现象的分析,得出了此次空压机转子损坏事故的原因为空压机多次的启动,造成转子叶轮紧固螺栓的疲劳破坏、断裂、叶轮脱落、磨损。介绍了用三元坐标法对叶轮的型线进行测绘,确定叶轮的流道参数,然后用冷焊法对叶轮进行修补的处理方案。     

Blood flow analysis for the secondary impeller of an IVAS heart pump

The rotodynamic heart pump (IVAS), designed by the Cleveland Clinic Foundation, includes a secondary flow path along the journal bearing, through a secondary impeller, and over the rotor outer surface. The flow behaviors of the blood through the journal bearing and the secondary impeller are investigated by a computational fluid dynamics method that solves the 3-dimensional Navier-Stokes equations using a new solution algorithm. Results of the analyses include: 1) the blood flow patterns within the journal bearing, 2) the effect of the non-uniform bearing clearance on the flow patterns of the impeller cavity, 3) the flow patterns around a secondary impeller blade that include effects of tip clearance and the gap between the blade and the inner or outer side wall, 4) effects of the blade angles on the secondary impeller performance, and 5) the shear stress distribution.     

机械、摩擦双防松锁紧装置在单级单吸离心泵中的应用

本文通过对常用单级单吸离心泵叶轮防松方式的研究,发现微动磨损是造成常用叶轮防松装置松动的主要原因,提出了一种避免微动磨损的新的叶轮防松方案,并在煤化工厂的单级泵上进行了试用,取得了较好的效果,该防松方式可以在相关泵上推广使用。