...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Modelling-based Innovative Feeding Strategy for Beam Blanks Mould Casting Aimed at As-cast Surface Quality Improvement
【24h】

Modelling-based Innovative Feeding Strategy for Beam Blanks Mould Casting Aimed at As-cast Surface Quality Improvement

机译：旨在改善铸件表面质量的基于模型的新型毛坯铸件送料策略

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Within an investigation focused on effect of casting conditions on steel quality in an industrial beam blanks mould, different nozzle geometries were tested with Computational Fluid Dynamics modelling. The innovative nature of the work consisted in feeding with only one nozzle, whereas two nozzles in the flange-tip zone are commonly used. This configuration has the advantage of a simplified mono-slide gate casting layout, but single nozzle feeding can bring about risks of too high steel velocity in the mould, harmful for shell integrity and meniscus stability. Having in mind the mentioned constraints, different geometry solutions were checked and, to assess the solutions found, suitable indices were defined, related to flow conditions able to prevent slag entrapment at the meniscus, and hot-spotting at walls, harmful for the solid shell integrity. The modelling work gave general indications on undesired flow features and guidelines to improve reference conditions, involving number of holes and holes angle, size and shape. For the caster mould and the operating conditions under concern, a solution was found satisfying the indices, and expected to fulfil the quality requests. It consisted of a nozzle with a 50 mm diameter throat, a 50 mmx60 mm elliptical lateral port inclined 25° downwards and a 20 mm-diameter bottom hole. A water model check with such a nozzle prototype validated the model supporting the solution identified to be used on plant.
机译：在一项针对铸造条件对工业型钢毛坯模具中钢质量影响的研究中，使用计算流体动力学模型测试了不同的喷嘴几何形状。这项工作的创新性质在于仅使用一个喷嘴进料，而法兰顶区域中通常使用两个喷嘴。这种配置的优点是简化了单滑浇口浇铸布局，但是单喷嘴进给会带来模具中钢速度过高的风险，这对壳体完整性和弯月面稳定性有害。考虑到上述限制，检查了不同的几何解决方案，并评估了找到的解决方案，并定义了与流量条件有关的合适指标，这些条件能够防止弯月面夹渣，并防止壁壁热斑，这对固体壳体有害诚信。建模工作对不希望的流动特征和指导原则提供了一般指示，以改善参考条件，包括孔的数量以及孔的角度，大小和形状。对于所关注的脚轮模具和操作条件，找到了一种满足指标的解决方案，并有望满足质量要求。它由直径为50毫米的喷嘴，向下倾斜25°的50毫米x 60毫米的椭圆形侧孔和20毫米直径的底孔组成。使用这种喷嘴原型进行的水模型检查验证了支持确定用于工厂的解决方案的模型。

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