在鋼板熱軋過程中，換軋輥及換鋼種是必然發生且發生頻率高的情形。 原廠發現換軋輥時發生板厚偏薄及第七站頭端軋延力設定值偏高的情形。承上，本文依據原廠所提供的大量線上軋延資料，定義四種特殊狀況：狀況1.含換第七站軋輥且不換鋼種，狀況2.只換一至六站軋輥任數站軋輥且不換鋼種，狀況3.只換鋼種不換任何一站軋輥，狀況4.換鋼種且換第七站軋輥。並且利用統計歸納與物理意義分析，建立針對各特殊狀況頭端完軋溫度設定值及各站頭端軋延力設定值的參數調適法則，期能使頭端完軋板厚誤差小於1/2公差。
狀況1.及狀況2在頭端完軋溫度設定值參數調適方面，是利用換輥卷頭端完軋溫度誤定誤差，及換輥卷與前一卷頭端完軋溫度設定誤差變化量的趨勢，來決定換輥卷頭端完軋溫度設定值修正量。在各換輥站頭端軋延力設定值參數調適方面，是利用各換輥站頭端軋延力設定誤差的趨勢，來決定各換輥站軋延力乘子的修正參數。
狀況3.及狀況4.均不對所有資料做整體性頭端完軋溫度設定值及第七站頭端軋延力設定值的調適。狀況3.則是針對鋼種G_1換J_1及N_1換N_3的情形，提出換鋼種鋼卷的頭端完軋溫度設定值及第七站頭端延力設定值的調適法則。
本文針對各特殊狀況所提出的參數調適法則，均較調適前大幅降低頭端完溫度設定誤差量及各站頭端軋延力設定誤差量。調適結果亦優於原廠數值。

Roll change and Steel change always happen during hot rolling process in high frequency. China Steel Coop. found that head end finished gage measurements tend to be much thinner then setup gage, and head end force setup of stand 7 tends to be much higher then it’s measurements after roll changes. Therefore, according to large amount of on-line hot rolling data provided by the company., this thesis defines following four special events for discusstion: Case1. Roll change occurs in stand 7 with zero or more roll changes occur in the other stands and without any steel change. Case 2. Zero or more roll changes occur in all stands except stand 7, and without any steel change. Case 3. Steel change occurs without any roll change. Case 4. Steel change occurs with roll change occurs in stand 7. This thesis use statistics, induction, and physical analysis to establish parameter tuning lows for head end finished temperature setup and head end force setup of each roll change stand for each special event, and expects to make finished gage error less than 1/2 tolerance.
For the parameter tuning of head end finished temperature in case1. and case2., this thesis use the information of head end finished temperature setup error of roll change coil and the information of head end finished temperature setup error change between roll change coil and the coil before roll change coil to decide the correction of head end finished temperature setup of roll change coil. For the parameter tuning of head end force setup of each roll change stand in case1. and case2., this thesis use the trend of head end force setup error of each roll change stand to decide the correctional coefficient of stand force mutliplyer.
In case3. and case4., there is not any entire tuning low for head end finished temperature setup and head end force setup of stand 7 for each case. In case 3, this thesis focus on steel change from G_1 to J_1 and from N_1 to N_3, and there is a tuning low established for head end finished temperature setup and head end force setup of stand 7 for each steel change.
In sum, magnitude of head end finished temperature setup error and head end force setup error of each roll change stand due to the parameter tunning low for each special event established in thesis is much less then the magnitude of setup error before parameter tuning. The result after parameter tuning are also better then the result due to parameter tuning low of the company.

書名頁…………………………………………………………………………………....i
論文指導教授推薦函………………………………………………………………..….ii
論文口試委員審定書……………………………………………………………..……iii
授權書……………………………………………………………………………..……iv
中文摘要……………………………………………………………………………….vii
英文摘要…………………………………………………………………………...….viii
誌謝……………………………………………………………………………………..ix
目錄……………………………………………………………………………………...x
表目錄……………………………………………………………………………...…..xii
圖目錄………………………………………………………………………………....xiv
一、前言1
1.1 熱軋概念簡介1
1.2 熱軋廠架構圖2
1.3 精軋區配置圖3
二、研究背景、動機與研究目標4
2.1 研究背景4
2.2 研究動機4
2.3 研究目標5
三、文獻回顧5
3.1 截面熱軋文獻5
3.2 YZU線上連續參數調適法則簡介5
3.3 YZU與原廠參數調適法則之比較與調適結果評詁6
3.3.1 YZU與原廠參數調適法則之比較6
3.3.2 YZU與原廠參數調適結果比較7
3.3.3 以頭端完軋溫度設定值及各站頭端軋延力設定值為調適目標7
3.3.4 原廠參數調適法針對特殊狀況軋延的調適結果8
3.4 定義特殊狀況資料分類10
四、針對特殊狀況參數調適之結果與討論11
4.1狀況1.含換第七站軋輥不換鋼種的情況11
4.1.1針對換輥卷頭端完軋溫度設定值的參數調適11
4.1.1.1 誤差平均值修正法17
4.1.1.2 誤差變化量平均值修正法18
4.1.2針對軋延力誤差的參數調適25
4.1.2.1 換輥卷第七站軋延力乘子參數調適法28
4.1.2.2 最佳化流變應力函數調適法33
4.2狀況2.換第一至六站軋輥但不換第七站軋輥且不換鋼種的情況36
4.2.1 針對頭端完軋溫度設定值的參數調適36
4.2.1.1 換一至六站軋輥之誤差變化量平均值修正法參數37
4.2.2 對各站頭端軋延力設定值的參數調適法43
4.2.2.1 換輥卷換輥站軋延力乘子參數調適法44
4.3狀況3.只換鋼種不換任何一站軋輥時的情況61
4.3.1 含有兩種流變應力函數鋼種之最佳化最佳化熱模型參數及流變應力函數鑑別62
4.3.2對換鋼種鋼卷之原廠與YZU調適結果與討論64
4.3.3 特別異常的換鋼種情況70
4.3.3.1鋼種G_1換J_170
4.3.3.2 鋼種N_1換N_372
4.4狀況4.換鋼種又換第七站軋輥的情況75
五、結論與未來展望79
5.1 本文貢獻79
5.2 各特殊狀況參數調適法查詢表80
5.3 後續研究討論83
參考文獻84

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