热轧U型钢板桩锁口金属流动及成形的研究

发布时间：2018-04-27 17:58

本文选题：U型钢板桩 + 锁口　；参考：《安徽工业大学》2017年硕士论文

【摘要】：热轧U型钢板桩是一种现代结构工程、建筑工程以及地下工程行业中所需的重要金属材料,特别是它的结构优势,可满足许多永久性和临时性的工程需求,而我国目前对U型钢板桩的生产技术研究甚少,正处于初期阶段。U型钢板桩结构复杂,两侧向内弯曲的锁口形状和尺寸在轧制过程中难以控制,轧制工艺难度大,为开发出优质的热轧U型钢板桩,必须对热轧U型钢板桩锁口金属流动及成形进行研究。本文主要对宽幅高度为400×170 mm的热轧U型钢板桩的成品孔型进行优化,并对热轧U型钢板桩锁口处成形过程中的金属流动进行分析,采用UG三维软件建立轧件与轧辊的三维模型,导入MSC.Marc有限元仿真软件中进行轧制模拟,通过模拟结果研究分析不同的轧制工艺参数对热轧U型钢板桩锁口弯曲变形的影响。主要内容如下:(1)对宽幅高度为400×170mm的热轧U型钢板桩的成品孔孔型进行分析,重点是锁口凸缘处的孔型分析;利用UG三维制图软件建立轧件与轧辊的几何模型,采用MSC.Marc有限元仿真软件,建立三维有限元分析模型,并结合实际参数,在MSC.Marc有限元软件中设定相关参数进行仿真,对热轧U型钢板桩精轧过程的最后一道次进行弹塑性分析。(2)根据MSC.Marc有限元仿真的结果,对热轧U型钢板桩锁口处的变形情况进行分析,结果显示,锁口在成品孔孔型中轧制时,向内弯曲的程度较小;研究摩擦系数、温度、轧件尺寸等参数对锁口变形的影响,结果表明:摩擦系数越小,锁口向内弯曲的程度越大,轧件尺寸增大,锁口向内弯曲的程度也得到了提高,温度的改变对锁口弯曲尺寸变化不明显。(3)根据金属流动理论和上述研究的结果,对之前的成品孔型进行修改,对热轧U型钢板桩在优化后的成品孔孔型中进行轧制模拟,通过对比优化前与优化后的成品孔孔型,验证优化后的成品孔孔型的可行性,并对优化后的成品孔孔型轧制出来的U型钢板桩锁口弯曲的尺寸进行分析,结果显示,热轧U型钢板桩在优化后的成品孔孔型中轧制出来的锁口弯曲程度较好,符合锁口尺寸标准。研究轧制速度、轧制温度、摩擦系数等工艺参数对热轧U型钢板桩金属流动的影响,确定最优化工艺。
[Abstract]:Hot rolled U-shaped steel sheet pile is an important metal material needed in modern structural engineering, building engineering and underground engineering industry, especially its structural advantages, which can meet many permanent and temporary engineering needs. However, at present, there are few researches on the production technology of U-shaped steel sheet pile in our country, and the structure of U-shaped steel sheet pile is very complicated at the initial stage. The shape and size of the lock port bending inward on both sides is difficult to control in the rolling process, and the rolling process is difficult. In order to develop high quality hot rolled U-shaped steel sheet pile, it is necessary to study the metal flow and forming at the lock mouth of hot rolled U-shaped steel sheet pile. In this paper, the final product pass of hot rolled U-shaped sheet pile with wide width of 400 脳 170mm is optimized, and the metal flow in the forming process of hot rolled U-shaped steel sheet pile is analyzed. The 3D model of workpiece and roll is established by UG software. The rolling simulation was carried out with MSC.Marc finite element simulation software. The effect of different rolling process parameters on the bending deformation of hot rolled U-shaped steel sheet pile was studied and analyzed by the simulation results. The main contents of this paper are as follows: (1) to analyze the hole pass of hot rolled U-shaped steel sheet pile with a wide width of 400 脳 170mm, with emphasis on the pass analysis at the flange of the lock, and to establish the geometric model of the workpiece and roll by using UG 3D drawing software. MSC.Marc finite element simulation software is used to establish the three-dimensional finite element analysis model. Combining with the actual parameters, the relevant parameters are set up in the MSC.Marc finite element software for simulation. Elasto-plastic analysis of the finishing process of hot rolled U-shaped steel sheet pile. (2) according to the result of MSC.Marc finite element simulation, the deformation at the lock of hot rolled U-shaped steel sheet pile is analyzed. The results show that when the lock is rolled in the pass of the finished product, The influence of friction coefficient, temperature and the size of rolling piece on the deformation of the lock is studied. The results show that the smaller the friction coefficient, the greater the bending degree of the lock, and the larger the size of the workpiece. The degree of inward bending of the lock has also been improved, and the change of temperature has no obvious effect on the bending size of the lock. (3) according to the metal flow theory and the results of the above research, the pass shape of the former finished product is modified. The rolling simulation of hot rolled U-shaped steel sheet pile in the optimized finished hole pass is carried out, and the feasibility of the optimized finished product hole pass is verified by comparing the pre-optimized and the optimized finished product hole pass. The results show that the clamping bending degree of hot rolled U-shaped steel sheet pile in the optimized finished hole pass is better than that of U-shaped steel sheet pile rolled by the optimized hole pass, and the results show that the clamping bending degree of the hot rolled U-shaped steel sheet pile in the optimized finished hole pass is good, and the results show that the bending degree of the U-shaped steel sheet pile after hot rolling is better. Conforms to the size standard of the lock port. The effects of rolling speed, rolling temperature and friction coefficient on metal flow of hot rolled U-shaped steel sheet pile were studied.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG335.5

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