本文選題：氣缸孔 + 激光珩磨　； 參考：《重慶理工大學》2015年碩士論文

【摘要】：在發(fā)動機氣缸中,缸套-活塞環(huán)是最核心的部件之一,它的潤滑、磨損和摩擦等問題對發(fā)動機的性能有著重要的影響,既對發(fā)動機的性能和工作效率產(chǎn)生影響,同時對其使用壽命也起著決定性作用。正是由于激光珩磨加工技術(shù)的出現(xiàn),缸套-活塞環(huán)的潤滑性能得到了很大的改善。目前,在發(fā)動機氣缸加工中,激光珩磨微加工技術(shù)正在起著越來越重要的作用。本文簡要介紹了摩擦副潤滑基本理論,為氣缸孔激光織構(gòu)微加工奠定理論基礎(chǔ)。介紹了激光表面織構(gòu)微加工設(shè)備的組成及工作原理。激光微織構(gòu)加工設(shè)備主要包括激光發(fā)生器、光學系統(tǒng)、機械運動系統(tǒng)、運動反饋系統(tǒng)、控制系統(tǒng)的軟硬件部分及輔助系統(tǒng),是集機、光、電、氣一體化的新型激光微織構(gòu)加工設(shè)備。以45#鋼試樣表面為例,以激光表明織構(gòu)微加工工藝試驗為基礎(chǔ),重點分析了影響氣缸表面凹腔及溝槽加工質(zhì)量的工藝參數(shù),確定了合適的激光控制參數(shù)范圍,得出最佳凹腔及溝槽激光加工工藝參數(shù)。同時,對采用激光珩磨微織構(gòu)加工技術(shù)的凹腔與溝槽進行潤滑摩擦性能試驗研究,得到最優(yōu)凹腔及溝槽加工參數(shù)。與未織構(gòu)試樣相比,激光珩磨加工后試樣的摩擦、潤滑、耐磨性能都得到相應提高。
[Abstract]:In the engine cylinder, the cylinder liner piston ring is one of the most core components. Its lubrication, wear and friction have an important impact on the engine performance, both on the performance and efficiency of the engine. At the same time, its service life also plays a decisive role. Because of the appearance of laser honing technology, the lubrication performance of cylinder liner-piston ring has been greatly improved. At present, laser honing technology is playing a more and more important role in engine cylinder machining. The basic theory of friction pair lubrication is briefly introduced in this paper, which lays a theoretical foundation for laser micromachining of cylinder hole. The composition and working principle of laser surface texture micromachining equipment are introduced. Laser microtexture processing equipment mainly includes laser generator, optical system, mechanical motion system, motion feedback system, hardware and software part of control system and auxiliary system. Gas-integrated laser microtexture processing equipment. Taking the surface of 4steel specimen as an example, based on the experiment of laser indicated texture micromachining, the technological parameters affecting the machining quality of the concave cavity and grooves on the cylinder surface are emphatically analyzed, and the suitable laser control parameters range is determined. The optimum laser processing parameters of concave cavity and groove are obtained. At the same time, the friction and lubrication performance of the cavity and grooves with laser honing micro-texture processing technology was studied, and the optimum machining parameters of the cavity and groove were obtained. Compared with the untextured samples, the friction, lubrication and wear resistance of the samples processed by laser honing have been improved accordingly.
【學位授予單位】：重慶理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TK406

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本文編號：1868306