發(fā)布時間：2018-04-27 17:58

  本文選題：U型鋼板樁 + 鎖口��； 參考：《安徽工業(yè)大學》2017年碩士論文

【摘要】：熱軋U型鋼板樁是一種現(xiàn)代結(jié)構(gòu)工程、建筑工程以及地下工程行業(yè)中所需的重要金屬材料,特別是它的結(jié)構(gòu)優(yōu)勢,可滿足許多永久性和臨時性的工程需求,而我國目前對U型鋼板樁的生產(chǎn)技術(shù)研究甚少,正處于初期階段。U型鋼板樁結(jié)構(gòu)復雜,兩側(cè)向內(nèi)彎曲的鎖口形狀和尺寸在軋制過程中難以控制,軋制工藝難度大,為開發(fā)出優(yōu)質(zhì)的熱軋U型鋼板樁,必須對熱軋U型鋼板樁鎖口金屬流動及成形進行研究。本文主要對寬幅高度為400×170 mm的熱軋U型鋼板樁的成品孔型進行優(yōu)化,并對熱軋U型鋼板樁鎖口處成形過程中的金屬流動進行分析,采用UG三維軟件建立軋件與軋輥的三維模型,導入MSC.Marc有限元仿真軟件中進行軋制模擬,通過模擬結(jié)果研究分析不同的軋制工藝參數(shù)對熱軋U型鋼板樁鎖口彎曲變形的影響。主要內(nèi)容如下:(1)對寬幅高度為400×170mm的熱軋U型鋼板樁的成品孔孔型進行分析,重點是鎖口凸緣處的孔型分析;利用UG三維制圖軟件建立軋件與軋輥的幾何模型,采用MSC.Marc有限元仿真軟件,建立三維有限元分析模型,并結(jié)合實際參數(shù),在MSC.Marc有限元軟件中設(shè)定相關(guān)參數(shù)進行仿真,對熱軋U型鋼板樁精軋過程的最后一道次進行彈塑性分析。(2)根據(jù)MSC.Marc有限元仿真的結(jié)果,對熱軋U型鋼板樁鎖口處的變形情況進行分析,結(jié)果顯示,鎖口在成品孔孔型中軋制時,向內(nèi)彎曲的程度較小;研究摩擦系數(shù)、溫度、軋件尺寸等參數(shù)對鎖口變形的影響,結(jié)果表明:摩擦系數(shù)越小,鎖口向內(nèi)彎曲的程度越大,軋件尺寸增大,鎖口向內(nèi)彎曲的程度也得到了提高,溫度的改變對鎖口彎曲尺寸變化不明顯。(3)根據(jù)金屬流動理論和上述研究的結(jié)果,對之前的成品孔型進行修改,對熱軋U型鋼板樁在優(yōu)化后的成品孔孔型中進行軋制模擬,通過對比優(yōu)化前與優(yōu)化后的成品孔孔型,驗證優(yōu)化后的成品孔孔型的可行性,并對優(yōu)化后的成品孔孔型軋制出來的U型鋼板樁鎖口彎曲的尺寸進行分析,結(jié)果顯示,熱軋U型鋼板樁在優(yōu)化后的成品孔孔型中軋制出來的鎖口彎曲程度較好,符合鎖口尺寸標準。研究軋制速度、軋制溫度、摩擦系數(shù)等工藝參數(shù)對熱軋U型鋼板樁金屬流動的影響,確定最優(yōu)化工藝。
[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.
【學位授予單位】：安徽工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG335.5

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