本文選題：微細(xì)溝槽內(nèi)螺紋銅管 + 成形工藝��； 參考：《華南理工大學(xué)》2016年博士論文

【摘要】：隨著人類社會(huì)的發(fā)展,各種能源的消耗越來越多,因此,減少能源消耗就顯得越來越重要,在各類能源的消耗中,摩擦的消耗尤為巨大,在微細(xì)溝槽內(nèi)螺紋銅管的成形過程中材料的摩擦亦是如此,因此針對(duì)這一領(lǐng)域內(nèi)的減摩工作進(jìn)行研究是必要的。微細(xì)溝槽內(nèi)螺紋銅管的成形工藝以拉拔旋壓成形為核心工序,因此這一工藝中的減摩研究最為重要,摩擦的一點(diǎn)點(diǎn)微小的降低都可以大大的節(jié)省能源�；谶@一現(xiàn)狀,研究這一成形工藝特點(diǎn)并分析具有針對(duì)性的材料就顯得尤為重要。本文主要研究內(nèi)容如下:(1)微細(xì)溝槽內(nèi)螺紋銅管成形工藝研究研究微細(xì)溝槽內(nèi)螺紋銅管的成形工藝特點(diǎn),據(jù)此分析其理論模型并確定其工作狀態(tài),通過各項(xiàng)工藝參數(shù)的分析確定其運(yùn)動(dòng)規(guī)律,理順各加工參數(shù)的關(guān)系并建立相應(yīng)數(shù)學(xué)模型,分析微細(xì)溝槽內(nèi)螺紋銅管和模具的受力情況,為減摩效果的研究做理論準(zhǔn)備并提供理論依據(jù)。(2)微細(xì)溝槽內(nèi)螺紋銅管成形仿真研究運(yùn)用有限元仿真軟件研究微細(xì)溝槽內(nèi)螺紋銅管成形工藝的特點(diǎn),分析成形過程中微細(xì)溝槽內(nèi)螺紋銅管應(yīng)力、應(yīng)變、溫度等眾多物理參數(shù)的變化情況,研究摩擦系數(shù)對(duì)于成形工藝的影響,驗(yàn)證摩擦效果和銅管質(zhì)量,從而為工業(yè)生產(chǎn)和產(chǎn)業(yè)升級(jí)提供理論支持。(3)材料減摩性能的實(shí)驗(yàn)分析對(duì)具有減摩效果的各類材料進(jìn)行摩擦學(xué)實(shí)驗(yàn)研究,通過在專用摩擦試驗(yàn)機(jī)上得出的實(shí)驗(yàn)數(shù)據(jù)分析減摩效果,觀察微觀摩擦形貌,探討摩擦減少的原因,分析其可靠性,并根據(jù)試驗(yàn)情況找出最優(yōu)減摩方案。綜合研究各物理參數(shù)對(duì)于摩擦效果的影響,分析可以改善摩擦性能的原因,探討其減摩機(jī)理。結(jié)合拉拔旋壓的工藝特點(diǎn)分析其適用性,對(duì)于摩擦系數(shù)和材料本體特性之間的關(guān)系進(jìn)行分析,以指導(dǎo)最優(yōu)減摩方案的選擇。(4)減摩效果的機(jī)理分析針對(duì)材料自身的物理性能特點(diǎn)根據(jù)摩擦學(xué)原理并結(jié)合力學(xué)分析系統(tǒng)性的進(jìn)行相關(guān)研究,從理論的角度解釋摩擦系數(shù)能夠降低的原因,確定各種物理參數(shù)和摩擦影響因素與摩擦系數(shù)大小之間的關(guān)系,并分析其摩擦過程和機(jī)理,建立相應(yīng)的理論模型,對(duì)其作用效果進(jìn)行全面研究總結(jié),為減摩研究提供理論指導(dǎo)。
[Abstract]:With the development of human society, more and more energy is consumed. Therefore, it is more and more important to reduce energy consumption. The same is true of the friction of the materials in the forming process of the micro-grooves, so it is necessary to study the antifriction work in this field. The core of the forming process is drawing spinning forming, so the study of friction reduction is the most important, and a little reduction of friction can save energy greatly. Based on the present situation, it is very important to study the forming process characteristics and analyze the targeted materials. The main contents of this paper are as follows: (1) the forming process of micro-grooved internal threaded copper tubes; the forming process characteristics of micro-grooved internal threaded copper tubes; based on this, the theoretical model is analyzed and its working state is determined. Through the analysis of various technological parameters to determine its motion law, straighten out the relationship between the processing parameters and establish the corresponding mathematical model, analyze the force situation of the copper pipe with thread and die in the micro-groove. Making theoretical preparation for the study of friction-reducing effect and providing the theoretical basis.) the simulation study on the forming process of micro-grooved internal threaded copper tube using finite element simulation software is used to study the characteristics of forming process of micro-grooved internal threaded copper pipe. The variation of stress, strain, temperature and many other physical parameters of the threaded copper tube in the micro-grooves are analyzed. The influence of friction coefficient on the forming process is studied, and the friction effect and the quality of the copper tube are verified. Thus providing theoretical support for industrial production and industrial upgrading. (3) the experimental analysis of friction-reducing properties of materials. Tribological experiments were carried out on all kinds of materials with antifriction effect. The friction-reducing effect was analyzed by the experimental data obtained from the special friction testing machine. The microcosmic friction morphology was observed, the cause of friction reduction was discussed, its reliability was analyzed, and the optimal antifriction scheme was found according to the experimental results. The influence of physical parameters on friction effect is studied synthetically. The causes of improving friction performance are analyzed and the mechanism of friction reduction is discussed. According to the technological characteristics of drawing spinning, its applicability is analyzed, and the relationship between friction coefficient and material bulk characteristics is analyzed. The mechanism analysis of antifriction effect according to the physical properties of the material itself, according to the tribology principle and the mechanics analysis, the related research is carried out systematically in accordance with the principle of tribology and the mechanics analysis. This paper explains the reason why the friction coefficient can be reduced from a theoretical point of view, determines the relationship between various physical parameters and friction influencing factors and the friction coefficient, analyzes the friction process and mechanism of the friction coefficient, and establishes the corresponding theoretical model. A comprehensive study of the effect of antifriction is carried out to provide theoretical guidance for the study of friction reduction.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：TG306;TH117

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本文編號(hào)：1967887