本文關(guān)鍵詞：管道工廠化預(yù)制及混合氣體保護(hù)自動(dòng)焊的應(yīng)用研究　出處：《西安石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 工廠化預(yù)制 保護(hù)氣體 混合氣體保護(hù)焊 缺陷及防治

【摘要】：當(dāng)代石油化工行業(yè)的迅速發(fā)展,工藝管道安裝的集成化、大型化已成為管道安裝的主要趨勢(shì)。為了滿足工程的工期要求、保證工程施工質(zhì)量,我單位在靖邊能源工業(yè)園建立了三個(gè)管道預(yù)制廠,并積極革新推廣Ar/CO2混合氣體保護(hù)焊工藝,對(duì)工藝管道預(yù)制、安裝質(zhì)量的提高、工期的縮短都具有積極的意義。在本文中,通過(guò)對(duì)靖邊能化項(xiàng)目現(xiàn)場(chǎng)實(shí)物量的估算,以及管道施工工期的考慮,我公司對(duì)管道預(yù)制工作站進(jìn)行了規(guī)劃。通過(guò)大量的數(shù)據(jù)估算與分析,設(shè)計(jì)了一套適應(yīng)現(xiàn)場(chǎng)高效率、快節(jié)奏的施工程序。同時(shí)選取了管道預(yù)制自動(dòng)焊機(jī),其最大特點(diǎn)是焊槍位置不變、工件轉(zhuǎn)動(dòng),在焊接過(guò)程中一直保持平焊,有效地保證焊接質(zhì)量。通過(guò)試驗(yàn)研究及數(shù)據(jù)分析發(fā)現(xiàn),保護(hù)氣體的合理選擇對(duì)預(yù)防焊接飛濺具有重要作用。當(dāng)混合氣體中CO2的含量超過(guò)20%時(shí),焊接過(guò)程中的飛濺率會(huì)突然增加,而在CO2氣體中加入Ar氣體可以明顯減少飛濺的形成。為提高焊接質(zhì)量,對(duì)焊接工藝作了優(yōu)化。通過(guò)實(shí)驗(yàn)及理論分析,我們確定了一般碳鋼焊接時(shí),焊絲一般選用H08Mn2Si A、直徑Φ1.6mm,伸出長(zhǎng)度在16~20mm,焊接電流為200A~220A,焊接電壓為21~23V,焊接速度視情況而定。以上理論分析與實(shí)驗(yàn)研究,為管道工廠化預(yù)制與混合氣體保護(hù)焊的結(jié)合應(yīng)用提供依據(jù)。
[Abstract]:With the rapid development of the contemporary petrochemical industry, the integration of process pipeline installation and large-scale pipeline installation has become the main trend of pipeline installation. My unit has established three pipeline prefabrication plants in Jingbian Energy Industrial Park, and actively innovated and popularized the Ar/CO2 mixed gas shielded welding process to improve the prefabrication and installation quality of the process pipeline. The shortening of the construction period is of positive significance. In this paper, through the estimation of the site physical quantity of Jingbian energy project, as well as the consideration of the pipeline construction period. My company has carried on the plan to the pipeline precast workstation. Through the massive data estimation and the analysis, has designed a suit of high efficiency, the fast rhythm construction procedure, and has selected the pipeline prefabrication automatic welding machine. Its biggest characteristic is that the position of welding torch is invariable, the workpiece is rotated, and the welding quality is effectively guaranteed by the flat welding in the process of welding, which is found by experimental research and data analysis. Reasonable selection of protective gas plays an important role in the prevention of welding spatter. When the content of CO2 in the mixed gas exceeds 20 kb, the spatter rate in the welding process will suddenly increase. In order to improve the welding quality, the welding process was optimized. Through the experimental and theoretical analysis, we determined the welding time of the general carbon steel. The wire is usually H08Mn2SiA, diameter 桅 1.6mm, extension length is 16m 20mm, welding current is 200An 220A, welding voltage is 213V. The above theoretical analysis and experimental study provide the basis for the combination application of pipe factory prefabrication and mixed gas shielded welding.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ055.81;TG444.72

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