本文選題：應(yīng)變強(qiáng)化 + 技術(shù)研究��； 參考：《華南理工大學(xué)》2015年碩士論文

【摘要】：本文以應(yīng)變強(qiáng)化型奧氏體不銹鋼制固定式低溫儲(chǔ)罐為研究對(duì)象,對(duì)強(qiáng)化技術(shù)理論進(jìn)行研究,并將強(qiáng)化技術(shù)應(yīng)用到產(chǎn)品的設(shè)計(jì)開發(fā)與制造中,借鑒本單位按照ASME和EN強(qiáng)化標(biāo)準(zhǔn)完成設(shè)計(jì)和制造強(qiáng)化型低溫儲(chǔ)罐的經(jīng)驗(yàn),進(jìn)行應(yīng)變強(qiáng)化模擬產(chǎn)品的試驗(yàn)和研究,對(duì)強(qiáng)化技術(shù)和研發(fā)實(shí)踐中的問題進(jìn)行系統(tǒng)的研究和探討。(1)本文對(duì)應(yīng)變強(qiáng)化型固定式低溫儲(chǔ)罐的應(yīng)用、結(jié)構(gòu)型式、絕熱方式進(jìn)行綜述;討論國內(nèi)強(qiáng)化技術(shù)在低溫儲(chǔ)罐中的應(yīng)用,總結(jié)國外應(yīng)變強(qiáng)化技術(shù)的發(fā)展進(jìn)程,提出本文的主要研究內(nèi)容。(2)對(duì)強(qiáng)化容器用奧氏體不銹鋼材料的力學(xué)性能、許用應(yīng)力、屈強(qiáng)比和塑性指標(biāo)等技術(shù)指標(biāo)進(jìn)行系列試驗(yàn)研究;從強(qiáng)化過程工藝、強(qiáng)化壓力載荷、強(qiáng)化作用、最大變形量控制等方面分別對(duì)強(qiáng)化技術(shù)進(jìn)行討論;討論了室溫強(qiáng)化和低溫強(qiáng)化兩種模式的特點(diǎn)和適用條件;從選材、設(shè)計(jì)、制造、焊接等角度討論應(yīng)變強(qiáng)化強(qiáng)化核心技術(shù);對(duì)多層纏繞絕熱的立式儲(chǔ)罐適用特殊強(qiáng)化工藝過程進(jìn)行討論;結(jié)合工程實(shí)踐,提出了強(qiáng)化技術(shù)應(yīng)用的難點(diǎn)問題。(3)通過對(duì)6mm,8mm,10mm三種不同厚度的S30408(06Cr19Ni10)和1.4301(X5CrNi18-10)兩種奧氏體不銹鋼材料進(jìn)行一系列的強(qiáng)化前和強(qiáng)化后的性能試驗(yàn),對(duì)試驗(yàn)結(jié)果進(jìn)行分析討論。結(jié)合具體低溫儲(chǔ)罐設(shè)計(jì)實(shí)例,討論應(yīng)變強(qiáng)化低溫儲(chǔ)罐在設(shè)計(jì)中的材料選擇、設(shè)計(jì)應(yīng)力值確定、強(qiáng)度計(jì)算,采用有限元分析方法進(jìn)行外殼封頭的內(nèi)壓校核計(jì)算。(4)對(duì)強(qiáng)化型低溫儲(chǔ)罐絕熱性能進(jìn)行計(jì)算討論,對(duì)四種立式低溫儲(chǔ)罐的支撐結(jié)構(gòu)進(jìn)行優(yōu)缺點(diǎn)對(duì)比分析,對(duì)立式強(qiáng)化儲(chǔ)罐八點(diǎn)支撐結(jié)構(gòu)出現(xiàn)的問題進(jìn)行討論,采用有限元分析手段對(duì)強(qiáng)化儲(chǔ)罐溫度載荷條件下支撐結(jié)構(gòu)的安全性能分析計(jì)算,從設(shè)計(jì)結(jié)構(gòu)和制造過程兩方面討論分析出解決措施;對(duì)臥式儲(chǔ)罐的支撐進(jìn)行分析和危險(xiǎn)工況下應(yīng)力計(jì)算并提出優(yōu)化措施。(5)分析討論應(yīng)變強(qiáng)化容器制造過程的特殊要求,討論對(duì)容器人孔設(shè)置、加強(qiáng)圈結(jié)構(gòu)、夾層管路布局、排水排氣結(jié)構(gòu)等結(jié)構(gòu)設(shè)計(jì)問題的處理。結(jié)合實(shí)例,探討強(qiáng)化變形的測量問題。從母材的選用、材料的抗拉強(qiáng)度上限、焊接材料的選用、焊接方法等方面討論應(yīng)變強(qiáng)化容器焊接的影響因素,將熔敷金屬與母材的化學(xué)成分進(jìn)行圖表對(duì)比。從安全性能、強(qiáng)化變形影響角度,分別討論了對(duì)接接頭、接管與殼體焊接D類焊接接頭、加強(qiáng)圈拼接接頭的焊接接頭應(yīng)采用的結(jié)構(gòu)型式。
[Abstract]:In this paper, the theory of strengthening technology is studied, and the strengthening technology is applied to the design, development and manufacture of the product, taking the strain-strengthened austenitic stainless steel fixed low-temperature storage tank as the research object. Using the experience of ASME and en strengthening standards to complete the design and manufacture of reinforced low-temperature storage tanks, the strain strengthening simulation products are tested and studied. In this paper, the application, structure and adiabatic method of strain-strengthened fixed low-temperature storage tank are summarized, and the application of domestic strengthening technology in low-temperature storage tank is discussed. The development process of strain strengthening technology abroad is summarized, and the main research content of this paper is put forward. The mechanical properties, allowable stress, yield strength ratio and plasticity index of austenitic stainless steel materials for strengthening containers are studied in a series of tests. The strengthening technology is discussed from the aspects of strengthening process, strengthening pressure load, strengthening effect, maximum deformation control, etc. The characteristics and applicable conditions of room temperature strengthening and low temperature strengthening are discussed, and the material selection, design and manufacture are discussed. The core technology of strain strengthening is discussed from the angle of welding, the special strengthening process of multi-layer winding and adiabatic vertical storage tank is discussed, and combined with engineering practice, This paper puts forward the difficult problem of strengthening the application of austenitic stainless steel by means of a series of tests before and after strengthening of three kinds of austenitic stainless steel materials with different thickness of 6mm, 8mm and 10mm, and 1.4301X 5CrNi18-10). The results of the test are analyzed and discussed. In this paper, the material selection, design stress value and strength calculation of strain-strengthened low-temperature storage tank in the design are discussed in combination with the design examples of the concrete low-temperature storage tank. Finite element analysis method is used to calculate the internal pressure of the shell head. The adiabatic performance of the strengthened low temperature storage tank is calculated and discussed. The advantages and disadvantages of the supporting structures of the four vertical low temperature storage tanks are compared and analyzed. The problems of the eight-point bracing structure of the reinforced storage tank are discussed, and the safety performance of the bracing structure under the condition of the temperature load of the strengthened tank is analyzed and calculated by means of finite element analysis. The solution measures are discussed from the aspects of design structure and manufacturing process, the support of horizontal storage tank and stress calculation under dangerous working condition are analyzed, and the optimization measures are put forward. The special requirements of strain strengthening vessel manufacturing process are analyzed and discussed. In this paper, the design of manhole, reinforced ring, interlayer pipe and drain exhaust are discussed. Combined with an example, the measurement of strengthening deformation is discussed. The factors affecting the welding of strain-strengthened vessel are discussed from the aspects of selection of base metal, upper limit of tensile strength of material, selection of welding material and welding method. The chemical composition of deposited metal and base metal are compared with each other. From the point of view of safety performance and the influence of strengthening deformation, the structure types of welded joint of butt joint, pipe and shell are discussed respectively.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ053.2

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相關(guān)期刊論文 前1條

1 周連東;江楠;;國產(chǎn)S30408奧氏體不銹鋼應(yīng)變強(qiáng)化低溫容器許用應(yīng)力及應(yīng)變確定[J];壓力容器;2011年02期

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本文編號(hào)：1951883