HIGH-PRECISION MEASUREMENT AND ACTIVE CONTROL OF SOLIDIFICATION

高精度测量和主动控制凝固

• 批准号: 05239104
• 负责人: KUROSAKI Yasuo
• 金额: $ 53.5万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05239104/
• 关键词: Solidification Process; Active Control; Polymeric Materials; Semiconductor Materials; Steel Casting; Fiber-Reinforced Composite Materials; Radiation Heat Transfer; Electric; Magnetic Fields; 複雑断面繊維; 単結晶成長; 連続鋳造スラブ; 炭酸ガスレーザ照射; 樹脂・金型界面熱抵抗; 非線形

This research project aims to establish the technology for processing and manufacturing of novel materials utilizing the precise measurement and active control of melting/solidification phenomena. The project involves 4 elemental research fields divided according to the material to be processed, and the results can be summarized as follows :(1) Concerning the processing of polymeric materials, a high-precision injection-molding process was proposed by utilizing a CO_2-Laser Irradiation, and its effectiveness was confirmed in molding of polymer products of sub-mum precision. In addition, a technique for measuring the thermal resistance at the boundary between mold surface and molded polymer was developed to obtain better understandings of the heat transfer between them. As a polymeric material with novel characteristics, high-speed spinning of fibers of non-circular cross-section was tested, and the mechanism of structure development in the cross-section of fibers was discussed based on … More the molecular orientation and heat transfer around the fibers.(2) Concerning the single crystal growth for semiconductor materials, melt flow interacted with the external electric/magnetic fields was examined from the micro-macro view points. The effect of electric conductivity of the crucible wall on the melt flow and heat transfer was studied under the external magnetic field. These results were adopted to obtain high-quality single crystals.(3) About the precise control of the solidification of steel slab in continuous casting direct rolling process, effective edge-heating method utilizing the convection-radiation conversion was examined. The results enable us to obtain the relation between the edge-heating effect and properties of the slab surface and the radiation convertor.(4) Concerning the fiber-reinforced composite materials, a method for measuring the thermal properties of the composite material was developed, and a correlation estimating the relation between the thermal properties and fiber/matrix materials was deduced. The correlation can be utilized for designing the thermal properties of the composite materials.In addition to those, thermal behavior of cooling media in trans-critical state was supposed to be utilized for heat transfer control in material processing, and fundamentals of the trans-critical phenomena were studied by a molecular-dynamics approach. Less

本研究项目旨在建立利用熔化/凝固现象的精确测量和主动控制来加工和制造新材料的技术。根据加工材料的不同，本项目涉及4个基本研究领域，主要研究成果如下：(1)在聚合物材料的加工方面，提出了一种利用CO_2激光照射的高精度注射成型工艺，并在亚精密聚合物制品的成型中得到了验证。此外，还开发了一种测量模具表面和模塑聚合物界面热阻的技术，以更好地了解它们之间的传热。作为一种具有新特性的高分子材料，对非圆截面纤维的高速纺丝进行了试验，并基于…对纤维截面结构发展的机理进行了探讨对于半导体材料的单晶生长，从微观和宏观的角度考察了熔体流动与外加电场和磁场的相互作用。在外加磁场的作用下，研究了炉壁电导率对熔体流动和换热的影响。针对连铸直接轧制过程中板坯凝固过程的精确控制，研究了利用对流-辐射转换技术实现边部加热的方法。对于纤维增强复合材料，提出了一种测量复合材料热物性的方法，并推导出了热物性与纤维/基体材料之间的关联式。该关联式可用于设计复合材料的热性能。此外，还应利用冷却介质在跨临界状态下的热行为来控制材料加工过程中的换热，并用分子动力学方法研究了跨临界现象的基本原理。较少

项目成果

一宮、吉田: "加振伝熱面上の衝突噴流熱伝達の特性" 第32回日本伝熱シンポジウム講演論文集. 2. 389-390 (1995)

Ichinomiya, Yoshida：“激发传热表面上的冲击射流传热的特性”第 32 届日本传热研讨会论文集。2. 389-390 (1995)。

一宮浩市、松本 弘: "比較的狭い隙間における層流環状衝突噴流の伝熱流動特性" 日本冷凍協会論文集. 11. 289-298 (1994)

Hiroshi Ichinomiya、Hiroshi Matsumoto：“相对狭窄间隙中层流环形冲击射流的传热流动特性”日本制冷协会汇刊 11. 289-298 (1994)。

一宮浩一 他1名: "環状ノズルによる乱流衝突噴流熱伝達の特性" 第30回日本伝熱シンポジウム講演論文集. 3. 775-777 (1993)

Koichi Ichinomiya 等人：“通过环形喷嘴的湍流冲击射流传热的特性”第 30 届日本传热研讨会论文集 3. 775-777 (1993)。

Kurosaki, Satoh, Saito: "Injection-Molding Process for High-Precision Polymer Products Utilizing CO_2 Laser Irradiation" Proc.Int.Symp.on Molecular and Microscale Heat Transfer in Materials Processing and Other Applications. 351-362 (1997)

Kurosaki、Satoh、Saito：“利用 CO_2 激光辐照的高精度聚合物产品的注塑工艺”Proc.Int.Symp.on 材料加工和其他应用中的分子和微尺度传热。

Kurosaki,Satoh,Saito: "Reduction of Birefringence in a Skin-Layer of Injection Molded Polymer Strip using CO2 Laser Irradiation" Proceedings of the 30th 1995 National Heat Transfer Conference. HTD-Vol. 306. 201-208 (1995)

Kurosaki、Satoh、Saito：“使用 CO2 激光照射减少注射成型聚合物条带表层中的双折射”1995 年第 30 届全国传热会议论文集。