微细沟槽内螺纹铜管成形工艺及其减摩性能研究

发布时间：2018-06-02 07:13

本文选题：微细沟槽内螺纹铜管 + 成形工艺　；参考：《华南理工大学》2016年博士论文

【摘要】：随着人类社会的发展,各种能源的消耗越来越多,因此,减少能源消耗就显得越来越重要,在各类能源的消耗中,摩擦的消耗尤为巨大,在微细沟槽内螺纹铜管的成形过程中材料的摩擦亦是如此,因此针对这一领域内的减摩工作进行研究是必要的。微细沟槽内螺纹铜管的成形工艺以拉拔旋压成形为核心工序,因此这一工艺中的减摩研究最为重要,摩擦的一点点微小的降低都可以大大的节省能源。基于这一现状,研究这一成形工艺特点并分析具有针对性的材料就显得尤为重要。本文主要研究内容如下:(1)微细沟槽内螺纹铜管成形工艺研究研究微细沟槽内螺纹铜管的成形工艺特点,据此分析其理论模型并确定其工作状态,通过各项工艺参数的分析确定其运动规律,理顺各加工参数的关系并建立相应数学模型,分析微细沟槽内螺纹铜管和模具的受力情况,为减摩效果的研究做理论准备并提供理论依据。(2)微细沟槽内螺纹铜管成形仿真研究运用有限元仿真软件研究微细沟槽内螺纹铜管成形工艺的特点,分析成形过程中微细沟槽内螺纹铜管应力、应变、温度等众多物理参数的变化情况,研究摩擦系数对于成形工艺的影响,验证摩擦效果和铜管质量,从而为工业生产和产业升级提供理论支持。(3)材料减摩性能的实验分析对具有减摩效果的各类材料进行摩擦学实验研究,通过在专用摩擦试验机上得出的实验数据分析减摩效果,观察微观摩擦形貌,探讨摩擦减少的原因,分析其可靠性,并根据试验情况找出最优减摩方案。综合研究各物理参数对于摩擦效果的影响,分析可以改善摩擦性能的原因,探讨其减摩机理。结合拉拔旋压的工艺特点分析其适用性,对于摩擦系数和材料本体特性之间的关系进行分析,以指导最优减摩方案的选择。(4)减摩效果的机理分析针对材料自身的物理性能特点根据摩擦学原理并结合力学分析系统性的进行相关研究,从理论的角度解释摩擦系数能够降低的原因,确定各种物理参数和摩擦影响因素与摩擦系数大小之间的关系,并分析其摩擦过程和机理,建立相应的理论模型,对其作用效果进行全面研究总结,为减摩研究提供理论指导。
[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.
【学位授予单位】：华南理工大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TG306;TH117

【参考文献】