高壓氣瓶收口塑性成形數(shù)值模擬與缺陷預(yù)測
發(fā)布時(shí)間：2019-02-09 14:09
【摘要】：本課題源于上海市某氣瓶廠基于鋼制氣瓶和鋁制氣瓶的產(chǎn)品質(zhì)量改進(jìn)項(xiàng)目。 高壓氣瓶作為安全生產(chǎn)的重要組成設(shè)備,屬于特種設(shè)備范疇,作為典型的儲運(yùn)設(shè)備,在國民經(jīng)濟(jì)中起到了越來越重要的作用。由于氣瓶本身主要用來儲存高壓氣體,所以生產(chǎn)氣瓶過程中對氣瓶質(zhì)量的控制要求極為嚴(yán)格。這就要求氣瓶成形過程要嚴(yán)格控制,保證科學(xué)性和統(tǒng)一性,同時(shí)也對檢測設(shè)備提出了更高的要求。高壓氣瓶成形主要有兩種方法,即擠壓成形和旋壓成形,這兩種方法都是無切削成形,性能優(yōu)于焊接氣瓶。旋壓成形和拉伸擠壓成形占據(jù)了國內(nèi)氣瓶成形90%的份額,本文對兩種加工氣瓶的成形加工方法進(jìn)行了探討,所以對氣瓶塑性成形研究具有普遍意義。 根據(jù)高壓氣瓶要求安全性高,成形復(fù)雜的特點(diǎn),本文以在工廠實(shí)踐的基礎(chǔ)上,仔細(xì)觀察氣瓶生產(chǎn)過程,對核心工藝進(jìn)行研究,分析了影響氣瓶成形的主要參數(shù)。旋壓成形主要參數(shù)包括旋輪輪廓,旋壓溫度,主軸轉(zhuǎn)速,旋壓進(jìn)給速度,旋壓道次等；拉伸擠壓成型主要參數(shù)包括縮口系數(shù),加熱溫度,潤滑摩擦系數(shù),擠壓速度等。通過對氣瓶成形特點(diǎn)的分析研究,初步分析了造成成形缺陷的關(guān)鍵因素。利用有限元數(shù)值模擬技術(shù),對實(shí)際生產(chǎn)過程進(jìn)行必要的簡化,建立了旋壓氣瓶和拉伸擠壓氣瓶的有限元模型,利用有限元模擬分析軟件Abaqus進(jìn)行了旋壓成形模擬,用Deform軟件進(jìn)行了擠壓拉伸模擬,分析了成形機(jī)理和成形過程中的受力情況,提出了各參數(shù)對成形缺陷的影響,為實(shí)際生產(chǎn)氣瓶正常成形、預(yù)防成形缺陷提出了理論支持。 對于已經(jīng)成形的氣瓶,缺陷檢測非常重要,水壓試驗(yàn)正是為了確保氣瓶質(zhì)量而設(shè)計(jì)的檢測方法,并且被國家確定為氣瓶出廠檢測必備設(shè)備。本課題組自行設(shè)計(jì)的水壓試驗(yàn)設(shè)備,屬于國內(nèi)領(lǐng)先的技術(shù),可以準(zhǔn)確檢測內(nèi)表面褶皺缺陷氣瓶,對氣瓶內(nèi)部裂紋,堆疊,氣孔等缺陷也可以很好的檢測。
[Abstract]:This paper is based on the product quality improvement project of a gas cylinder factory in Shanghai based on steel cylinder and aluminum cylinder. As an important component equipment of safe production, high pressure gas cylinder belongs to the special equipment category. As a typical storage and transportation equipment, it plays a more and more important role in the national economy. Because the cylinder itself is mainly used to store high pressure gas, the quality control of gas cylinder is very strict. This requires the cylinder forming process to be strictly controlled, to ensure scientific and unified, but also to put forward higher requirements for testing equipment. There are two main forming methods for high pressure gas cylinder, namely, extrusion forming and spinning forming. These two methods are non-cutting forming, and the performance is better than that of welding gas cylinder. Spinning forming and drawing extrusion forming account for 90% of the domestic gas cylinder forming. In this paper, two kinds of forming methods are discussed, so it is of general significance to study the plastic forming of gas cylinder. According to the characteristics of high pressure gas cylinder which requires high safety and complex forming, based on the factory practice, the production process of gas cylinder is observed carefully, the core process is studied, and the main parameters affecting the forming of gas cylinder are analyzed. The main parameters include the profile of spinning wheel, spinning temperature, spindle speed, spinning feed speed, spinning channel, etc. The main parameters of drawing extrusion include shrinkage coefficient, heating temperature, lubricating friction coefficient, extrusion speed and so on. By analyzing the forming characteristics of gas cylinder, the key factors of forming defects are analyzed. The finite element simulation technology is used to simplify the actual production process, and the finite element models of spinning gas cylinder and tensile extruding gas cylinder are established, and the spinning forming simulation is carried out by using the finite element simulation software Abaqus. The extrusion and drawing simulation was carried out with Deform software. The forming mechanism and the stress during the forming process were analyzed. The influence of various parameters on the forming defects was put forward. The theoretical support was put forward for the actual production of gas cylinders in normal forming and the prevention of forming defects. For the gas cylinders that have been formed, the defect detection is very important. The water pressure test is designed to ensure the quality of the gas cylinders, and is determined by the state as the necessary equipment for the inspection of gas cylinders out of the factory. The water pressure test equipment designed by our team belongs to the leading technology in our country. It can accurately detect the inner surface wrinkle defect gas cylinder, and also can detect the gas cylinder internal crack, stacking, porosity and so on.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH49
本文編號：2419034
[Abstract]:This paper is based on the product quality improvement project of a gas cylinder factory in Shanghai based on steel cylinder and aluminum cylinder. As an important component equipment of safe production, high pressure gas cylinder belongs to the special equipment category. As a typical storage and transportation equipment, it plays a more and more important role in the national economy. Because the cylinder itself is mainly used to store high pressure gas, the quality control of gas cylinder is very strict. This requires the cylinder forming process to be strictly controlled, to ensure scientific and unified, but also to put forward higher requirements for testing equipment. There are two main forming methods for high pressure gas cylinder, namely, extrusion forming and spinning forming. These two methods are non-cutting forming, and the performance is better than that of welding gas cylinder. Spinning forming and drawing extrusion forming account for 90% of the domestic gas cylinder forming. In this paper, two kinds of forming methods are discussed, so it is of general significance to study the plastic forming of gas cylinder. According to the characteristics of high pressure gas cylinder which requires high safety and complex forming, based on the factory practice, the production process of gas cylinder is observed carefully, the core process is studied, and the main parameters affecting the forming of gas cylinder are analyzed. The main parameters include the profile of spinning wheel, spinning temperature, spindle speed, spinning feed speed, spinning channel, etc. The main parameters of drawing extrusion include shrinkage coefficient, heating temperature, lubricating friction coefficient, extrusion speed and so on. By analyzing the forming characteristics of gas cylinder, the key factors of forming defects are analyzed. The finite element simulation technology is used to simplify the actual production process, and the finite element models of spinning gas cylinder and tensile extruding gas cylinder are established, and the spinning forming simulation is carried out by using the finite element simulation software Abaqus. The extrusion and drawing simulation was carried out with Deform software. The forming mechanism and the stress during the forming process were analyzed. The influence of various parameters on the forming defects was put forward. The theoretical support was put forward for the actual production of gas cylinders in normal forming and the prevention of forming defects. For the gas cylinders that have been formed, the defect detection is very important. The water pressure test is designed to ensure the quality of the gas cylinders, and is determined by the state as the necessary equipment for the inspection of gas cylinders out of the factory. The water pressure test equipment designed by our team belongs to the leading technology in our country. It can accurately detect the inner surface wrinkle defect gas cylinder, and also can detect the gas cylinder internal crack, stacking, porosity and so on.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH49
【引證文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前1條
1 甘平燕;帶缺陷的CNG-2氣瓶安全評估與分析[D];華南理工大學(xué);2013年
，本文編號：2419034
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