【摘要】：油氣管道直縫焊管的質(zhì)量安全關(guān)系著國家和人民的切身利益。其中,用來生產(chǎn)直縫鋼管所用的原料鋼板發(fā)生銹蝕是鋼管質(zhì)量下降的主要原因。鋼板放置在環(huán)境潮濕的廠房內(nèi),不及時使用就會發(fā)生氧化銹蝕,如果不進(jìn)行表面除銹處理直接使用必然會對產(chǎn)品的性能造成影響,尤其是在焊接工序中,銹蝕會降低焊縫質(zhì)量甚至導(dǎo)致產(chǎn)品報廢。本文為了解決鋼板生銹導(dǎo)致直縫焊管合格率較低的問題,在鋼板進(jìn)行銑邊加工工序之前,分別對鋼板表面進(jìn)行整板的機械打磨除銹處理和板邊的噴砂除銹處理。為了符合直縫鋼管廠對除銹設(shè)備的技術(shù)要求,本文設(shè)計出了一套自動化的鋼板表面處理設(shè)備,包括對鋼板表面進(jìn)行機械除銹的整板除銹設(shè)備和對鋼板板邊進(jìn)行噴砂除銹的板邊除銹設(shè)備。本文利用Solidworks軟件對除銹設(shè)備零部件進(jìn)行三維建模,計算并選擇了所涉及到的電機、絲杠、導(dǎo)軌等型號。應(yīng)用有限元軟件對結(jié)構(gòu)部件進(jìn)行了優(yōu)化設(shè)計,得到了理想的優(yōu)化結(jié)果。通過有限元方法對關(guān)鍵零件進(jìn)行校核,證明了設(shè)計的合理性。對振動源較為復(fù)雜的整板除銹設(shè)備進(jìn)行了模態(tài)分析,證明了設(shè)備能夠避免共振產(chǎn)生。本文對除銹設(shè)備的除銹系統(tǒng)進(jìn)行了初步的控制方案的設(shè)計,對控制器選擇和伺服電機控制方面進(jìn)行了探討。本文利用ANSYS/LS-DYNA有限元軟件對單粒子沖擊靶板進(jìn)行模擬仿真,研究了噴砂加工工藝。通過調(diào)整砂粒的速度、大小和沖擊角度,分析了應(yīng)力和能量分布情況,研究了不同工況下噴砂除銹的效果,為提高噴砂質(zhì)量和效率提供了指導(dǎo)。
[Abstract]:The quality and safety of straight welded pipe for oil and gas pipeline relate to the vital interests of the country and people. The corrosion of raw steel plate used to produce straight-cut steel pipe is the main reason of steel tube quality decline. If the steel plate is placed in a damp factory building, oxidation corrosion will occur if it is not used in time. If the steel plate is not treated with surface rust removal, the performance of the product will inevitably be affected, especially in the welding process. Corrosion will reduce weld quality and even lead to product scrapping. In order to solve the problem that the steel plate rust leads to the low qualified rate of the straight welded pipe, the whole plate surface is treated by mechanical grinding and rust removal and the plate edge sandblasting is done before the milling process. In order to meet the technical requirements of rust removal equipment in straight-seam steel pipe factory, a set of automatic steel plate surface treatment equipment is designed in this paper. The utility model comprises a whole plate rust removing equipment for carrying out mechanical rust removal on the steel plate surface and a plate edge rust removing equipment for sandblasting the steel plate edge. In this paper, Solidworks software is used to model the parts of rust removal equipment, and the models of motor, lead screw and guide rail are calculated and selected. The finite element software is used to optimize the design of structural components, and the ideal optimization results are obtained. The key parts are checked by finite element method, and the rationality of the design is proved. Modal analysis of the whole plate rust removal equipment with more complex vibration source shows that the device can avoid resonance. In this paper, the rust-removing system of the rust removal equipment is designed, and the selection of the controller and the control of the servo motor are discussed. In this paper, ANSYS/LS-DYNA finite element software is used to simulate single particle impact target and sand blasting process is studied. By adjusting the speed, size and impact angle of sand particles, the distribution of stress and energy is analyzed, and the effect of sand blasting on rust removal under different working conditions is studied, which provides guidance for improving the quality and efficiency of sand blasting.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG173

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