薄板坯连铸保护渣冶金性能实验研究

对5种薄板坯连铸保护渣化学成分、熔化温度、熔化速度、结晶温度和矿物组成进行了试验研究和理论分析，结果表明现行薄板坯连铸保护渣熔化温度为1057～1131℃，熔化速度为19．3～61．1s，结晶温度为1058～1142℃，凝固渣样的矿物组成以硅灰石和少量黄长石为主，且随着碱度的提高，渣样的玻璃化率急剧降低。综合各种性能和工艺要求，渣A除熔化速度需要调整外，其它性能均较适于薄板坯连铸需要。     

Influence of submerged entry nozzle clogging on the behavior of molten steel in continuously cast slab molds

The influence of submerged entry nozzle clogging on the behavior of molten steel in continuously cast slab molds was studied using commercial code CFX4.3. The results indicate that clogging at the top part of the nozzle port not only increases the velocity of molten steel, but also enhances the wall shear stress, F number and heat flux. This clogging has the greatest effect on the behavior of molten steel. However, clogging at the top 1/3 of the nozzle only increases the velocity of molten steel and has little influence. Clogging at the bottom of the nozzle almost has no influence.     

Effects of Rare Earth Oxide on Viscosity of Mold Fluxes for Continuous Casting

The effects of RE (rare earth) oxide on viscosity of mold fluxes were investigated with a rotary viscometer. The results show that : (1) The viscositv of mold fluxes is remarkably inereased by RE oxide addition, especially when the mass fraction of RE oxide is more than 10%. (2) By addition of RE oxide, precipitation of the insohlble particles with high melting point from the molten slag with the decreasing of the temperature leads to the inerease of viscosity. Viscosity curve shows that RE oxide is soluble in some extent in mold fluxes. When RE oxide is in a state of supersaturation, the existence of insoluble particles also makes the viscosity of mold fluxes increase. (3) Not only the viscositv of nlold fluxes can be reduced, but also the capacity to dissolve and absorb RE oxide can be increased by Li2O, B2O3 and BaO. However, the contents of Li2O, B2O3, and BaO should be controlled to suitable levels. (4) The solidification temperature of mold fluxes can be increased by the addition of RE oxide, which is unfavorable to heat transfer and luhrication of mold fluxes between steel shell and mold.     

坚持走产学研结合之路创新高职教育人才培养模式

高职教育人才培养模式的探索和创新,是通过产学结合、工学交替、校企合作的机制来实现的.主要在专业设置与建设、课程体系、教学内容、教学方法和手段、教学管理和人才培养途径等方面进行改革与创新.     

薄板坯连铸结晶器振动机构改进分析

介绍了DANIELI薄板坯连铸机结晶器振动机构影响拉速的根本原因，对结晶器振动机构的改进做了详细分析，有效地控制了结晶器振动台的偏摆量，比改进前提高拉速0．4m/min。     

注射模三维温度场的数值分析

考虑到注射模的结构特点(型腔为狭缝面，冷却孔细长)，通过边界方程及边界梯度方程的耦合，推导出求解注射模三维温度场的边界积分方程，并给出了计算基本解积分的数值方法及高阶奇异积分的解析方法；最后通过实例说明了数值分析在冷却系统设计中的应用．     

重力铸造板栅技术

论述了起动用铅酸蓄电池重力铸造板栅模具的设计、制造和铸造工艺技术。     

铰链式塑料瓶盖注射模具设计

以双向顶出脱模机构为特色，对铰链式塑料瓶盖的注射成型模具进行了设计．     

大型注射模浇注系统断面尺寸的计算

介绍一种计算大型注射模普通浇注系统断面尺寸的方法;采用这种方法,既可直接用来确定注射模普通浇注系统的主流道、分流道、浇口的断面尺寸,也可用来校核凭经验设计的浇注系统的断面尺寸的正确性,解决一些难以解决的塑料模具设计问题,以达到提高产品质量、缩短模具制造周期的目的。     

复制多元光学元件的模型型芯机器集成形状检测

表面特征参数的在位检测对生产过程控制可提供十分有用的信息，从而可在制造过程中直接调节加工参数．检测要求取决于应用领域．对于超精密表面，例如微结构的或连续结构的光学器件，宜应用干涉法进行形状检测，因为干涉法有极高的精度和适应性，此外，表面可被迅速检测，因而减少生产时间．但是干涉法对机器振动、噪声或空气扰动等外界影响十分敏感，因而很难在生产环境中完成干涉测量．提出了在机械加工环境中的干涉测量和基于对在位干涉检测中各种基本干涉影响分析结果基础上的仿真．