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頁籤選單縮合
題 名 | 金屬模離心鑄造轉速對碳鋼性能之影響=Effect of Rotational Speed on the Properties of Centrifugally Cast Steel Castings in Metallic Mold |
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作 者 | 楊國和; | 書刊名 | 鑄工 |
卷 期 | 25:4=103 1999.12[民88.12] |
頁 次 | 頁17-21 |
分類號 | 472.2 |
關鍵詞 | 離心鑄造; 轉速; 重力倍數; 鑄鋼; 機械性能; Centrifugal casting; Rotational speed; Times gravity; Steel casting; Mechanical properties; Widmanstatten ferrite; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究旨在探討於各種不同離心鑄造轉速下,對金屬模鑄造碳鋼性能的影響。在 四種重力倍數(50G、60G、70G、80G)(即不同金屬模轉速)條件下,離心鑄造碳鋼鋼管 的結果顯示:鑄鋼管的金相組織在管外側(即與金屬模具接觸部份)呈等軸晶,中間部份呈 垂直模壁生長之柱狀大晶粒,管內壁則呈Widmanstatten Ferrite組織。轉速愈快,晶粒愈細, 機械性能亦愈佳。鑄管內壁處因有脫碳之Widmanstatten Ferrite及縮孔致性能較差。 |
英文摘要 | The effect of rotational speed (time gravity) on the mechanical properties and microstructures of centrifugally cast steel has been studied. Four different times gravity, ie, 50G, 60G, 70G and 80G have been applied to centrifugally cast steel pipes. The results show: the exterior part of the steel pipes, ie, the part that contacts with the metallic mold, reveals equiaxed crystal structure; the central part shows larger columnar crystals grow perpedicularly from the mold wall; and the Widmanstatten ferrite structure is observed on the inner part of the pipe. The faster the rotational speed, the finer the crystal structure, and the better the mechanical properties. Owing to the decarburized Widmanstatten ferrite and shrinkage defect, the mechanical properties of the inner part are inferior to those of the exterior part. |
本系統中英文摘要資訊取自各篇刊載內容。