中厚板汽雾冷却技术的开发及应用

为解决济钢中板厂冷床能力不足问题，对汽雾冷却系统的技术原理、系统组成进行了研究及实际应用；应用汽雾冷却系统后，在保持钢板组织和力学性能不受影响的前提下，提高了钢板的降温速度，加快了生产节奏；经汽雾冷却的钢板，表面氧化层减薄1／2。     

利用空间多普勒调谐技术冷却原子及其速度单一化

本文理论计算了用圆锥管内多次全反射激光而产生的多普勒频移来冷却原子束的机制。给出了最佳冷却原子束的圆锥管的夹角、长度、反射次数及激光入、出射角等参数。理论计算了原子束经过圆锥管冷却的速度分布情况。数值计算结果表明：采用两个长１３０ｃｍ的锥形管来冷却原子束，选用合适的失谐量可使极大部分速度小于１２００ｍ／ｓ的原子冷却到８ｌｍ／ｓ，并且可得到单一速度的高亮度的原子束。     

高炉煤气喷水降温控制方法

用ＫＭＭ调节器根据温控偏差和喷水量计算两个调节参数，对水量调节阀进行开度调节来控制最终喷水量，从而达到准确有效控制布袋除尘器入口煤气温度的目的。     

PVC四通管注射模设计

介绍了PVC四通管注射模设计 ,阐述了弯型芯的旋转抽芯过程以及模具顶出、回程及冷却系统设计。实践证明 ,该模具结构合理 ,生产的塑件可以满足设计要求     

Z900MCM综述

介绍了Z900 MCM设计和布局,可控塌陷芯片连接(C4)工艺在Z900 MCM组装中的应用。从设计上通过加入垂直电感器及去耦电容器减小其噪声。通过基板测试和功能测试,剔除有缺陷的基板和芯片。Z900 MCM采用先进的MCM—D技术和MCM返工及冷却技术。Z900 MCM平均无故障时间高达40年。     

新型无杆水力采油装置研制与应用

针对中原油田中后期开发存在的液面降低、泵挂加深使得抽油机载荷增加、冲程损失增大、杆管偏磨严重等问题,研制了新型无杆水力采油装置。该装置采用球阀换向,冲程长、冲次低。现场试验时SC38—74—4.8型无杆水力采油装置与常规管式抽油泵联用,下泵深度1650m,冲程4.8m,冲次2.7min-1,日注水量72m3,产出液60m3。结果表明,新型无杆水力采油装置延长了抽油泵的使用寿命,彻底根除了杆管偏磨,采用球阀换向,对动力液要求较低,日常维护简单。     

发射药包装用复合纸桶现状与国内外纸桶对比

火炸药是易燃、易爆的产品，所以，它对包装要求也是很高的，特别强调它的包装可靠性。近几年来发展上许多国家都采用复合纸桶包装发射药，我厂生产的复合纸要能与国内外纤维板圆桶对比，在技术质量方面都比较先进。     

Effects of the cryogenic cooling on the fatigue strength of the AISI 304 stainless steel ground components

For environmental considerations, the substitution of the conventionally used oil-based grinding fluids has nowadays become strongly recommended. Although several alternatives have been proposed, cryogenic cooling by liquid nitrogen is the non-polluting coolant that has been given relatively more attention because of its very low temperature. In this investigation, in order to contribute to developing this promising cooling mode, its beneficial effects on the ground surface integrity of the AISI 304 stainless steel and their consequences on the fatigue lifetime are explored. Results of this investigation show that grinding under cryogenic cooling mode generates surfaces with lower roughness, less defects, higher work hardening and less tensile residual stresses than those obtained on surfaces ground under oil-based grinding fluid. These surface enhancements result into substantial improvements in the fatigue behaviour of components ground under this cooling mode. An increasing rate of almost 15% of the endurance limit at 2 × 10⁶ cycles could be realized. SEM analyses of the fatigue fracture surfaces have shown that the fatigue cracks observed on the specimens ground under cryogenic cooling are shorter (i.e., 30-50 μm) than those generated under oil-based cooling mode (i.e., 150-200 μm). The realized improvements in the surface integrity and in the fatigue behaviour are thought to be related to the reduction of the grinding zone temperature observed under cryogenic cooling, as no significant differences between the grinding force components for both cooling modes have been observed.     

内燃机车临时补水设备的设计与应用

针对内燃机车“途中缺水”故障 ,设计并安装临时补水设备 ,解决了电化区段临时补水的问题 ,满足了内燃机车“不停车、不停机”即可补水的要求。     

轧后穿水冷却工艺对棒材组织性能的影响

针对轧机产量提高后冷床冷却能力不足的问题 ,研制开发了棒材轧后穿水冷却技术。通过对小规格 2 0MnSiV热轧带肋钢筋进行轧后穿水冷却 ,钢材上冷床温度降低了 90～ 110℃ ,提高了产品质量 ,改善了各项力学性能 ,抗拉强度平均提高了 3 5～ 40MPa ,钢材性能合格率由 97.5 %提高到了 99.6% ,解决了冷床冷却能力不足、制约生产的瓶颈问题。