乳化液具有良好之冷卻與潤滑效果，是現今輥軋加工常用之潤滑劑。本研究為瞭解冷軋乳化液之磨潤特性，使用多功能磨潤試驗機探討負荷、滑動速度、試片材質、表面粗糙度及乳化液種類對冷軋磨潤特性之影響。以低粗糙度試片，在負荷(2.4GPa以下)、滑動速度(2.2m/s以下)條件下，探討冷軋乳化液之P-V曲線圖，結果發現QK-N36乳化液可區分出邊界潤滑區與初期熔執區，RL-61乳化液則無初期熔執區。因此，RL-61乳化液之耐負荷性能優於QK-N36乳化液，且其摩擦係數低於QK-N36乳化液，但此實驗結果趨勢與現場輥軋趨勢相異。在低負荷時高粗糙度、不同硬度試片條件下，RL-61乳化液之摩擦係數高於QK-N36乳化液，此結果與現場輥軋趨勢相同。在低負荷及冷模鋼試片條件下，RL-61乳化液之摩擦係數呈現和緩變化(0.07~0.09)，其摩擦係數屬於邊界潤滑，QK-N36乳化液之摩擦係數會快速遞減至0.02~0.04，其摩擦係數屬於混合潤滑。

Since oil-in-water emulsions combine good cooling and lubricating capabilities, they have been commonly used in cold rolling nowadays. In order to understand the tribology characteristics of the emulsion during the cold rolling process, the effects of load, sliding speed, material of specimen, surface roughness and type of emulsion on the tribology characteristics of cold rolling are investigated by using the multi-purpose friction and wear tester.The P (load) –V (sliding speed) curve was investigated under the conditions of load (below 2.4GPa), sliding speed (below 2.2m/s) at lower specimen roughness. Results show that QK-N36 emulsion can differentiate between boundary lubrication regime and initial seizure according to their friction coefficient, but RL-61 emulsion cannot differentiate them. Therefore, the load carrying capacity of RL-61 emulsion is better than that of QK-N36 emulsion, and its friction coefficient is also lower than that of QK-N36 emulsion. However, this tendency of experimental results is different from the cold-rolling practice.Under the lower load and higher surface roughness conditions with different hardness of specimen, the friction coefficient of RL-61 emulsion is higher than that of QK-N36 emulsion. This tendency of experimental results is the same as the rolling practice. Under the lower load condition with SDK-11 specimen, the friction coefficient of RL-61 emulsion varies gradually in the range of 0.07 ~ 0.09 located in the boundary lubrication regime, but the friction coefficient of QK-N36 emulsion reduces to 0.02~0.04 located in the mixed lubrication regime.

目錄 I
圖目錄 IV
表目錄 X
符號說明 XII
中文摘要 XIII
英文摘要 XIV
第 一 章 緒論 1
1-1 研究動機 1
1-2 文獻回顧 2
1-2-1 乳化液磨潤特性之研究 2
1-2-2 表面粗糙度之研究 5
1-2-3 實驗室與實際輥軋相關性之研究 5
1-3 研究目的與本文重點 6
1-4 本論文架構 6
第 二 章 實驗設備與實驗方法 9
2-1 實驗設備 9
2-1-1 TE-53多功能磨潤試驗儀 9
2-1-2 施放負荷裝置 10
2-1-3 環對環之滑滾比計算 10
2-1-4 球對環Hertz接觸壓力理論值計算 11
2-2 實驗條件 12
2-2-1 潤滑油性質與試片尺寸 12
2-2-2 測試法 15
2-3 量測儀器 15
2-4 實驗步驟 16
第 三 章 實驗結果與討論 21
3-1 定速法下冷軋油液之負荷與速度對摩擦係數的影響 21
3-1-1建立定速法下QK-N36之P-V曲線圖 21
3-1-2建立定速法下RL-61之P-V曲線圖 29
3-1-3 RL-61與QK-N36油液磨潤性能比較 36
3-2 探討表面粗糙度與不同材質對磨潤特性之影響 40
3-2-1 探討不同粗糙度對冷軋油磨潤性能之影響 40
3-2-2 不同材質與粗糙度對磨潤性能之影響 60
3-3以冷模鋼試片探討長距離時兩種油液之磨潤性能 71
3-3-1-1 以冷模鋼試片探討不同負荷下QK-N36油液之磨潤特性 71
3-3-1-2 以冷模鋼試片探討不同速度下QK-N36油液之磨潤特性 75
3-3-2-1 以冷模鋼試片探討不同負荷下RL-61油液之磨潤特性 78
3-3-2-2 以冷模鋼試片探討不同速度下QK-N36油液之磨潤特性 81
3-3-3 比較RL-61與QK-N36油液之磨潤特性 84
第 四 章 表面分析與探討 87
4-1 QK-N36之表面元素分析 87
4-2 QK-N36與RL-61之表面分析 89
4-2-1 磨耗深度與摩擦係數變化關係 89
4-2-2 不同環試片材質對磷元素分佈之影響 94
4-2-3 XPS表面分析 96
第 五 章 結論 98
參考文獻 99

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