臺灣博碩士論文加值系統

本文主要是針對新式轉爐，從熔解原理、製程參數及冶金品質作整體性的評估，使國人能對此新式熔解爐有更多的瞭解。
首先是介紹轉爐之設備裝置及操作原理，對於轉爐操作程序、配料種類、燃燒設定及廢氣之排放作一介紹，然後對轉爐熔解過程中的反應機構進行分析，以了解熔解過程中燃料及合金元素的相關反應。最後進行製程參數與冶金特性之研究。
實驗結果顯示，回爐料、鋼料及車削屑均可作為轉爐熔解之配料，但須注意其進料順序。合金元素之回收率，除碳大致維持在一範圍外，矽、錳之回收隨回爐料及鋼料比例增加而降低。合金元素添加時，碳與配料一同加入效果不佳，需待熔液完全熔解後，將碳置入熔液中較具效果，其他矽、錳等隨配料加入，回收情形與配料中元素相似。使用轉爐所生產之鑄件其機械性質及金相組織合於規範之要求，但由於其硫化物等含量低，其伸長率則遠大於標準值。

To provide more understanding of rotary furnace, principles of melting, process parameter and the quality of metallurgy are assessed in this study.
Installation and manipulation principles of rotary furnace are introduced first, including manipulation procedure, kinds of charges, combustion setting and fume exhaust. Reactions in melting cycles are then analyzed to evaluate the interaction between fuel and alloy elements. Finally, I investigate the manufacture parameters and characteristcs of metallurgy.
Results show that returns, steel scrap and turning chips could be used as charges, but the charging sequence deserves attention. The recovery of silicon and manganese decrease with addition of return and steel scrip, but recovery of carbon maintains unchangeable. When recarbonrizing, recovery is low with recarbonrisers and charges added simultaneously. It's better to recarbonrize when all of charges are melted. Recovery of ferrosilicon and ferromanganese are similar with other charges. The mechanical properties and microstructure of cast produced from rotary furnace are standard. But with low inclusion, elongation is achieved better than the standard.

中文摘要 Ⅰ
英文摘要 Ⅱ
目錄 Ⅲ
表目錄 Ⅵ
圖目錄 Ⅶ
第一章 前言 1
第二章 轉爐之設備裝置及操作原理 3
2.1設備裝置 3
2.2操作程序 3
2.3配料種類及其進料方式 5
2.3.1配料種類 5
2.3.2進料方式 8
2.4燃燒設定 9
2.5一些參數對燃燒之影響 12
2.6其他 13
2.6.1環境 13
2.6.2耐火材 15
2.6.3其他 16
第三章 轉爐之燃燒反應機構及原理 17
3.1燃料燃燒反應 17
3.2轉爐熔煉過程之反應 17
3.3熔渣形成之基本原理 20
3.4熔液與熔渣之反應 21
3.5氣體與熔渣之反應 23
3.6耐火材之反應 25
3.7添加劑之反應 26
3.8燃燒產物平衡之實例 27
第四章 研究目的及方法 29
4.1研究目的 29
4.2實驗方法 29
4.2.1爐次、熔煉、接種及球化處理 29
4.2.2機械性質測試 30
4.2.3金像試片製作及分析 30
第五章 結果與討論 31
5.1鐵熔液回收率與配料之關係 31
5.2元素回收率與配料之關係 33
5.3保溫期間元素含量之變化 36
5.4合金元素及焦碳之添加 38
5.5燃燒設定之影響 41
5.6機性性質 41
5.7顯微組織 42
第六章 結論 44
參考文獻 45

中文參考資料
1.黃禎烈，"以旋轉熔解爐熔解鑄鐵之方法"鑄工，民國86年3月， pp.78~86.
2. "鑄造手冊 第一冊" 中華民國鑄造學會，民國86年12月。
3.潘永寧，"鑄鐵之熔渣形成現象及其對鑄件品質之影響"鑄造月刊，第67期，1995年4月，pp.13~18.
4.潘國桐，"鑄鐵氣體鑄疵管制要領"鑄造月刊，第57期，1994年6月，pp.14~30
5.葉源達，"球墨鑄鐵球化率之判定法"鑄工，第31期民國70年12月。
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