• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Development of Viscometer Based on Single Sphere Pulling Method for Application to High Temperature Melts
【24h】

Development of Viscometer Based on Single Sphere Pulling Method for Application to High Temperature Melts

机译：基于单球拉伸法的粘度计在高温熔体中的应用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To evaluate the viscosities of molten slags that are suitable for capillary refining, a viscometer has been developed based on the single sphere pulling method that enables high accuracy viscosity measurement of high temperature melts. Viscosity measurements using the sphere pulling method generally carry experimental uncertainties attributed to shear stress on the wire suspending the sphere, which is not taken into account in the conventional Stokes’ law when deriving the liquid viscosity from the viscous force applied to a moving sphere in a liquid. In this study, we first considered a modified Stokes’ law equation that describes the balance between the external force and the sum of forces applied to the sphere and the suspension wire including shear stress, ascending force and the surface tension of a liquid applied to the wire, and then determined the liquid viscosity from movement of a single sphere by measuring the external force when the sphere passed through a set position. Second, we designed a new viscometer that controls the liquid container’s velocity using an electrical actuator and measures viscous force on a single sphere statically suspended from an electrical valance. We confirmed that relative sphere velocity in the liquid reaches terminal velocity immediately. These treatments improved the viscosity evaluation accuracy using the single sphere pulling method, and this viscometer enables the viscosity of the standard reference material (SRM2) for high temperatures to be measured to within ±5% relative errors from the recommended values, which is adequate for viscosity measurement of high temperature melts.
机译：为了评估适用于毛细管精炼的熔渣的粘度，基于单球拉制法开发了一种粘度计，该粘度计能够对高温熔体进行高精度的粘度测量。使用球形拉力法进行的粘度测量通常会带来实验不确定性，这些不确定性归因于悬挂球形的金属丝上的剪切应力，在传统的斯托克斯定律中，当从施加到运动球体中的粘性力中得出液体粘度时并未考虑到这一点。液体。在这项研究中，我们首先考虑了修正的斯托克斯定律方程，该方程描述了外力与施加到球体和悬索上的力之和之间的平衡，包括剪切应力，上升力和施加到球体上的液体的表面张力。线，然后通过测量球通过设定位置时的外力，根据单个球的运动确定液体粘度。其次，我们设计了一种新的粘度计，该粘度计使用电致动器来控制液体容器的速度，并测量静态悬挂在电价上的单个球体上的粘性力。我们确认，液体中的相对球速会立即达到最终速度。这些处理使用单球拉伸法提高了粘度评估的准确性，并且该粘度计使高温标准参比材料（SRM2）的粘度相对推荐值的相对误差在±5％以内，这对于高温熔体的粘度测量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号