EFFECT OF MAGNETIC PRESSURE ON THE INITIAL STAGE OF SOLIDIFICAION OF MOLTEN METAL

磁压力对熔融金属凝固初始阶段的影响

• 批准号: 04555162
• 负责人: ASAI Shigeo
• 金额: $ 10.18万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555162/
• 关键词: Oscillation marks,; Continuously casting,; Surface quality of cast metal,; Soft contacting solidification,; Magnetic pressure,; Electromagnetic processing of materials,; Process metallurgy,; オシレイションマーク; 電磁材料プロセシング; 鋼製造; 材料電磁プロセシング; 電磁気冶金; 高周波磁

In order to improve of the surface quality of continuously cast steels, a continuous caster with high frequency magnetic field applied from the outside of the mold has newly been developed. In a continous casting mold with imposition of the magnetic field the meniscus motion of a molten galliumused as a simultor of a molten steel was measured by a laser level senor. Moreover, a molten tin, used as another simulator was continuously cast into the mold with imposition of the magnetic field, and new functions created by the magnetic field were studied from the vied point of the control ofinitial solidification in continuously cast metals.It is found that the surface quality of the continuously cast tin can be drastically improved by use of the magnetic field, i.e. the intermittent high frequency magnetic field can produce a smooth surface. It is noticed that the surface quality of continuously cast metals depends on the period and the timing of imposing the magnetic field in a cycle of mold oscillation. The amount of electric current required to get the same surface quality decreases in the oprder of the imposiotion of thecontinuous and the intermittent magnetic fields and the synchronized imposition of it.

为了提高连铸钢的表面质量，新开发了一种从结晶器外部施加高频磁场的连铸机。在连铸结晶器中，用激光液位传感器测量了加磁场时镓液作为钢液模拟物的弯月面运动。此外，还将锡液作为另一种模拟物，在结晶器中施加磁场，从控制连铸金属的初始凝固的角度研究了磁场产生的新作用，发现磁场可显著改善连铸锡的表面质量，即间歇高频磁场可产生光滑表面。指出结晶器振动周期中施加磁场的周期和时机对连铸金属的表面质量有重要影响。在施加连续和间歇磁场以及同步施加磁场的过程中，获得相同表面质量所需的电流量减少。

项目成果

Tingju Li, Kensuke Sassa, Shigeo Asai :"Wave Behavior of Melt in a Continuous Casting Mold Applying Magnetic Field" Current Advances in Materials and Processes. Vol.5. 3 (1992)

Tingju Li、Kensuke Sassa、Shigeo Asai：“应用磁场的连续铸造模具中熔体的波动行为”材料和工艺的最新进展。

佐々健介,他: "連鋳における鋳片の表面粗度に及ぼす間欠高周波磁場の同期印加時期と鋳型冷却条件の影響" 材料とプロセス. 8. (1995)

Kensuke Sasa 等人：“同步施加间歇高频磁场和模具冷却条件对连铸板坯表面粗糙度的影响”材料和工艺 8。（1995 年）。

Tingju Li, Kensuke Sassa, Shigeo Asai :"Improvement of Surface Quality of Continuously Cast Metals by Imposing Intermittent High Frequency Magnetic Field from Outside of a Mold" The 2nd.Pacific Rim Int.Conf.on Advanced Mat.and Proc., Kyongiu Korea, Jun.(1

Tingju Li、Kensuke Sassa、Shigeo Asai ：“通过从模具外部施加间歇高频磁场来改善连续铸造金属的表面质量”第二届环太平洋国际先进材料与工艺会议，韩国庆州

Tingju Li, Kensuke Sassa, Shigeo Asai :"A Direct Observation of Behavior of Melt Meniscus in a Mold with Imposition of High Frequency Magnetic Field" Current Advances in Materials and Processes. Vol.6. 1127 (1993)

Tingju Li、Kensuke Sassa、Shigeo Asai：“通过施加高频磁场直接观察模具中熔化弯月面的行为”材料和工艺的最新进展。

Tingju Li, Shinji Nagaya, Kensuke Sassa, Shigeo Asai :"Effect of Imposition of High Frequency Magnetic Field on Meniscus Behavior in a Continuous Casting Mold." Current Advances in Materials and Processes. Vol.7. 15 (1994)

Tingju Li、Shinji Nagaya、Kensuke Sassa、Shigeo Asai：“施加高频磁场对连续铸造模具中弯月面行为的影响”。