低松弛预应力钢绞线拉丝生产线设计及工艺分析-机械工程专业论文.docxVIP

河北工业大学硕士学位论文 河北工业大学硕士学位论文 低松弛预应力钢绞线拉丝生产线设计及工艺分析 低松弛预应力钢绞线拉丝生产线设计及工艺分析 低松弛预应力钢绞线拉丝生产线 设计及工艺分析 摘 要 低松弛预应力钢绞线是应用于桥梁、建筑、水利、核电等工程的一种重要材料之一。 近年来，随着市场的开放，国内外对低松弛预应力钢绞线的消费需求不断增加，生产高效 高质的钢丝成为亟待解决的问题。本论文主要以低松弛预应力钢绞线拉丝生产作为研究对 象，对其工艺进行分析优化，主要得到以下几点结论： 1.通过对低松弛预应力钢绞线的性能及生产工艺流程进行研究，尤其详细研究了拉拔 模模角、定径带长度等模具结构参数和拉拔速度、摩擦因子等拉拔工艺参数对钢丝成形过 程的影响，设计了拉丝过程的机械结构，得到了拉拔模具结构参数和拉拔工艺参数； 2.利用 ANSYS 有限元分析，对多道次拉丝过程进行受力分析，制定合理的模具结构及 拉拔工艺参数，对工艺参数进行分析优化； 3.通过对各道次拉拔后的材料进行金相组织分析和应力测试，对工艺优化参数做进一 步的论证，验证了所确定的工艺参数的正确性。 本论文的研究，为低松弛预应力钢绞线拉丝的实际生产提供了理论依据和借鉴。 关键词：预应力钢绞线，拉拔，工艺设计，模具，有限元 -i- - - PAGE iv- THE PRODUCTION LINE DESIGN AND PROCESS ANALYSIS OF LOW RELAXATION PC STRAND WIRE DRAWING ABSTRACT Prestressed steel strand low relaxation is applied in bridge, construction, water conservancy, nuclear power engineering, one of a kind of important materials. In recent years, along with the market opening, low relaxation prestressed steel strand at home and abroad of increased consumer demand, production of steel wire be efficient and quality problem to be solved. This paper mainly with prestressed steel strand low relaxation drawing production as the research object, the process optimization analysis, the main get the following conclusion: Through the low relaxation prestressed steel strand of the performance and the production process flow study, especially a detailed study of the drawing die die Angle, bearing length with mold and structure parameters and pull out speed, friction factor and so on drawing process parameters on the effect of steel wire forming process, the design of the mecha nical structure drawing process, get the drawing die structure parameters and drawing process parameters; Using the ANSYS finite element analysis of the two wire drawing process of stress analysis and formulate the die structure and the drawing process parameters, the process parameters optimization analysis; Through the way time to pull out of the material after microstructure analysis and stress test, to the optimizing process