本文關(guān)鍵詞： 螺旋焊管 控制 成型參數(shù) 三輥成型 殘余應(yīng)力 彈復(fù)量　出處：《山東大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著油氣輸送管線的不斷開發(fā)建設(shè),焊接鋼管在不斷向大口徑、大壁厚、高鋼級(jí)發(fā)展。螺旋焊管由于設(shè)備的投資成本較低、生產(chǎn)線的設(shè)備重量比較輕、生產(chǎn)效率高、可以用寬度小的帶鋼生產(chǎn)出不同管徑的鋼管等特點(diǎn)使其成為國內(nèi)外輸油輸氣管線用管的基本管型。本論文結(jié)合山東勝利鋼管有限公司生產(chǎn)實(shí)際,研究了螺旋埋弧焊鋼管成型的工藝參數(shù)對(duì)成型質(zhì)量的影響,剖析了螺旋埋弧焊鋼管的存在的優(yōu)勢(shì)和缺陷以及螺旋成型對(duì)鋼管質(zhì)量(主要是焊縫質(zhì)量和外觀質(zhì)量)的影響機(jī)制。本論文重點(diǎn)對(duì)螺旋焊管在成型過程中存在的具體問題進(jìn)行了分析研究,解析了影響螺旋焊管成型穩(wěn)定的各種原因,并提出了相應(yīng)的解決問題的方法,且在實(shí)際生產(chǎn)中已經(jīng)得到了成功應(yīng)用。生產(chǎn)過程中合理調(diào)整成型器,是確保成型質(zhì)量的前提,本論文給出了根據(jù)鋼管規(guī)格進(jìn)行成型調(diào)整的原則和具體調(diào)整方法；分析了三種成型輥的特征,給出了科學(xué)合理的成型輥的外形圖；分析了原材料帶鋼質(zhì)量缺陷對(duì)鋼管生產(chǎn)的影響,提出了選擇原料時(shí)應(yīng)注意的問題。在實(shí)際生產(chǎn)中,選擇合適的成型輥以及合理螺旋焊管成型角,優(yōu)化1#輥、3#輥的間距,合理選擇2#成型壓下量,能夠大大提高螺旋埋弧焊鋼管的成型穩(wěn)定性。論文針對(duì)成型過程中經(jīng)常出現(xiàn)的鋼管管徑超差、成型撅嘴、成型錯(cuò)邊等成型缺陷提出了合理有效的控制措施；對(duì)螺旋焊管成型變形與鋼管彈復(fù)量及殘余應(yīng)力的關(guān)系進(jìn)行了分析,通過解析鋼板在成型其中的撓曲線微分方程,建立了2#輥壓下量與殘余應(yīng)力關(guān)系模型。在山東勝利鋼管有限公司PWS預(yù)精焊螺旋焊管機(jī)組上對(duì)論文所涉及的各種成型調(diào)整措施、參數(shù)優(yōu)化、缺陷控制措施以及殘余應(yīng)力的控制等各個(gè)方面進(jìn)行了生產(chǎn)驗(yàn)證,取得了良好的效果。
[Abstract]:With the continuous development and construction of oil and gas pipeline, welded steel pipe is developing to large diameter, large wall thickness and high steel grade. Because of the low investment cost of the equipment, the equipment weight of the production line is relatively light. The production efficiency is high, the steel pipe with different diameter can be produced by the strip with small width, which makes it become the basic pipe type for the oil and gas pipeline at home and abroad. This paper combines with the production practice of Shandong Shengli Steel Tube Co., Ltd. The influence of process parameters on the forming quality of spiral submerged arc welded steel tube was studied. The advantages and defects of spiral submerged arc welded steel tube and the effect of spiral forming on pipe quality (mainly weld quality and appearance quality) are analyzed. This paper focuses on the analysis and study of the specific problems existing in the forming process of spiral welded pipe. This paper analyzes the reasons that affect the forming stability of spiral welded pipe, and puts forward the corresponding methods to solve the problem, and has been successfully applied in actual production, and the molding device is adjusted reasonably in the process of production. It is the premise to ensure the forming quality. This paper gives the principle and the concrete adjustment method of the forming adjustment according to the steel pipe specification. The characteristics of three kinds of forming rollers are analyzed, and a scientific and reasonable shape diagram of forming rollers is given. This paper analyzes the influence of quality defects of raw material strip on steel pipe production, and puts forward some problems that should be paid attention to in selecting raw material. In actual production, the proper forming roll and reasonable forming angle of spiral welded pipe are selected to optimize the 1# roll. The forming stability of the spiral submerged arc welding steel pipe can be greatly improved by the distance of the roll and the reasonable selection of the rolling reduction. The paper aims at the tube diameter oversize which often appears in the forming process and the molding pout. Reasonable and effective control measures are put forward for forming defects, such as forming wrong edges. The relationship between the forming deformation of spiral welded pipe and the elastic volume and residual stress of steel pipe is analyzed. The differential equation of deflection curve of steel plate in forming is analyzed. A model of the relationship between roll reduction and residual stress was established, and the parameters were optimized on the PWS pre-welded spiral welded pipe unit of Shandong Shengli Steel Tube Co., Ltd. The defect control measures and residual stress control have been verified in production, and good results have been obtained.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE973

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 白忠泉;;螺旋埋弧焊管成型彎板原理概述[J];焊管;2010年02期

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本文編號(hào)：1452984