本文選題：電火花成型加工 + 逆變式電源�。� 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：電火花加工是早期的非傳統(tǒng)加工方法之一。電火花加工能夠加工任何導(dǎo)電的材料,而不用去考慮材料本身的機(jī)械性能,如硬度,強(qiáng)度,韌性以及脆性。電火花加工是在工件與電極間的小間隙中產(chǎn)生放電,并以熔化和汽化的方式將材料去除。電火花加工在加工復(fù)雜型腔以及高強(qiáng)高硬難加工導(dǎo)電材料方面發(fā)揮了重要作用。電火花加工技術(shù)廣泛地應(yīng)用于模具制造,航空領(lǐng)域、汽車制造以及醫(yī)學(xué)領(lǐng)域。然而,電火花加工之后往往要進(jìn)行拋光等后續(xù)處理工作,尤其是在模具加工等領(lǐng)域中,電火花加工后型腔表面難以直接滿足使用要求。同時(shí),傳統(tǒng)電火花加工在加工效率方面存在著很大的局限性,且傳統(tǒng)工作液采用煤油,其有易燃,易分解、易揮發(fā)等缺點(diǎn)。因此,開展高效水基工作液下的電火花成型加工技術(shù)研究有重要的實(shí)際應(yīng)用價(jià)值及理論意義。基于逆變式脈沖電源原理設(shè)計(jì)了脈沖電源,脈沖電源能夠提供最大電流為600A的任意大小及任意放電周期的大能量放電電流,基于脈沖電源,綜合考慮多種因素,搭建了脈沖電源控制柜,使用基于VB語(yǔ)言所開發(fā)的成型機(jī)加工控制界面,通過接口技術(shù)控制電弧電源及成型機(jī)的工作。基于水基工作液配置了不同濃度的鋁粉水基工作液,并通過添加不同乳化劑,研究不同乳化劑下鋁粉水基工作液的穩(wěn)定性,優(yōu)選出了最佳的乳化劑。研制了混粉電火花成型加工實(shí)驗(yàn)裝置,研究了電參數(shù)、非電參數(shù)對(duì)加工工藝過程中加工效率、工件表面粗糙度和工具電極損耗之間的關(guān)系,找出了相應(yīng)的工藝影響規(guī)律關(guān)系。研制了單脈沖放電裝置,借助示波器,金相顯微鏡和體視光學(xué)顯微鏡等對(duì)擊穿機(jī)理,蝕除產(chǎn)物的形貌和加工后電極與工件的特性進(jìn)行分析研究。試驗(yàn)加工出了輪胎模具花紋的樣件。
[Abstract]:EDM is one of the early non-traditional machining methods. EDM can process any conductive material without considering its mechanical properties, such as hardness, strength, toughness, and brittleness. EDM produces discharge in the small gap between workpiece and electrode and removes the material by melting and vaporizing. EDM plays an important role in machining complex cavity and high-strength and hard-hard conductive materials. EDM technology is widely used in mold manufacturing, aviation, automobile manufacturing and medical field. However, after EDM, polishing and other follow-up work are often carried out, especially in the field of die machining, the surface of the cavity after EDM is difficult to meet the requirements of application. At the same time, the traditional EDM has great limitations in machining efficiency, and the traditional working fluid uses kerosene, which has the shortcomings of flammability, decomposition and volatilization. Therefore, it is of great practical and theoretical significance to study the EDM technology under high efficiency water-based working fluid. The pulse power supply is designed based on the principle of the inverter pulse power supply. The pulse power supply can provide a large energy discharge current of any size and any discharge period of the maximum current 600A. Based on the pulse power supply, a variety of factors are considered synthetically. The control cabinet of pulse power supply is built, and the working of arc power supply and molding machine is controlled by the interface technology, which is based on the machining control interface developed by VB language. Based on the different concentration of aluminum powder water base working liquid, the stability of aluminum powder water base working fluid under different emulsifiers was studied, and the best emulsifier was selected. An experimental device for powder mixing EDM was developed. The relationship between electrical parameters and non-electrical parameters on machining efficiency, workpiece surface roughness and tool electrode loss was studied. A monopulse discharge device was developed. The breakdown mechanism, the morphology of etching products and the characteristics of electrode and workpiece after machining were analyzed by means of oscilloscope, metallographic microscope and stereoscopic optical microscope. The sample of tire mould pattern was processed by experiment.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG661

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本文編號(hào)：1985765