Investigation and Optimization of Ti-6Al-4V Titanium Alloy in the Fine Grinding Process Using Cold Air Gun Coolant System

使用空氣槍冷卻系統於Ti-6Al-4V鈦合金的研磨精加工性能之分析與最佳化

周志忠(Chih-Chung Chou) ； 劉南明(Nun-Ming Liu) ； 江可達(Ko-Ta Chiang) ； 張孝崢(Hsiao-Cheng Chang)

《修平學報》 33期 (2016/09) Pp. 1-27

摘要

In this paper, a series of the surface machining experimentation using the cold air gun coolant system in the fine grinding process of Ti-6Al-4V titanium alloy was investigated for observing the machinability evaluation such as the quality of the ground surface, dimensions and shape precision. Meantime, the mathematical model was presented to model and analyze the machining parameters of the fine grinding process for the influences of the quality of the ground surface. A cold air gun coolant system was used in the experiments and produced a jet of compressed cold air in the air-cooling process during the metal grinding cutting process. Titanium alloys have found very wide application areas of aerospace, such as 3C industry, aviation industry, automotive, electric industry, medicine and dentistry due to their excellent corrosion resistance, lightweight, high fatigue strength, low thermal expansion, non-magnetismn, non-toxicity and mechanical properties. In this paper, the mathematical model was presented to model the machinability evaluation through the response surface methodology (RSM). The quadratic model of response surface methodology (RSM) associated with the sequential approximation optimization (SAO) method would be used to explain the relation of the finishing grinding process parameters and machining characteristic, and to find optimum values of machining parameters for the face cutting process of Titanium alloys.

關鍵字

Cold air gun ； Fine grinding process ； Titanium alloy ； Optimization

並列摘要

本研究中，進行一系列使用空氣槍冷卻系統於研磨精加工製程於鈦合金的表面加工實驗，藉此觀察其加工特性，如加工表面品質與尺寸、形狀精度等。同時進而建立數學模組用來建模與分析其研磨精加工製程的參數對其各項加工特性之影響，藉此觀察加工表面品質。同時進而建立數學模組用來與分析其研磨精製程的參數對加工表面品質之影響。一組冷空氣槍冷卻系統被在實驗過程中使用，用來產生壓縮冷空氣的氣流，在金屬研磨切削過程中作為空氣冷卻過程。由於鈦合金之材料特性其質輕、耐腐蝕、耐高溫、疲勞強度大、熱膨脹係數小、非磁性、非毒性等及其優異的機械性質，被廣泛運用於3C產業、航太工業、化學工業、電力設備、生醫工程、汽車工業等。使用反應曲面法的二階數學模組以及結合連續近似最佳法，獲得其二階數學模組用來解釋其使用空氣槍冷卻於研磨精加工製程加工參數與加工品質特性之相互影響關係，同時在品質特性中找出鈦合金的表面加工過程之最佳化加工参數的設定。

並列關鍵字

建模 ； 粉末混合放電加工 ； 加工性能 ； 反應曲面法

參考文獻

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