本文選題：起重機(jī)滑軌　切入點(diǎn)：閃光焊接　出處：《西南交通大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：起重機(jī)滑軌廣泛地應(yīng)用于各種起重機(jī)所工作的領(lǐng)域,起重機(jī)是應(yīng)用范圍最廣的工程設(shè)備之一,發(fā)電廠、核電、碼頭、水利、隧道、橋梁、石化、冶金、建筑等行業(yè)需求巨大。隨著我國冶金、交通、礦山、航空、航天等重大工程中滑軌應(yīng)用日益增多,對(duì)起重機(jī)滑軌的焊頭質(zhì)量的要求越來越高。由于起重機(jī)滑軌的焊接接頭質(zhì)量關(guān)系著工程使用安全和效益以及國防工程建設(shè),因此確保起重機(jī)滑軌的現(xiàn)場(chǎng)焊接質(zhì)量具有重要意義。 本課題針對(duì)起重機(jī)滑軌在現(xiàn)場(chǎng)生產(chǎn)過程中焊接和焊后熱處理工藝問題,分別對(duì)接頭的質(zhì)量進(jìn)行研究。在焊接階段,統(tǒng)計(jì)分析采集系統(tǒng)檢測(cè)的焊接工藝參數(shù),對(duì)滑軌的現(xiàn)場(chǎng)焊接質(zhì)量進(jìn)行研究。在焊后熱處理階段,通過對(duì)比分析不同狀態(tài)下接頭工藝試驗(yàn)結(jié)果,總結(jié)分析焊后熱處理工藝對(duì)接頭質(zhì)量的影響。同時(shí),為了確保正火熱處理的質(zhì)量,本文利用ANSYS有限元分析軟件根據(jù)起重機(jī)滑軌的特殊截面結(jié)構(gòu),對(duì)正火加熱器進(jìn)行了與滑軌相匹配的優(yōu)化設(shè)計(jì)。 結(jié)果表明：采用閃光焊接工藝實(shí)現(xiàn)QU100起重機(jī)滑軌的無縫連接可行,實(shí)用效果良好,但灰斑是最常出現(xiàn)的缺陷,要注意防止和控制其產(chǎn)生,該種缺陷常出現(xiàn)在軌底區(qū)或軌角處,形態(tài)大小各異,對(duì)接頭性能危害性很大；起重機(jī)滑軌焊后熱處理工藝對(duì)提高起重機(jī)滑軌的接頭質(zhì)量十分有益；利用數(shù)值模擬方法優(yōu)化加熱器,能夠快速準(zhǔn)確地制定優(yōu)化設(shè)計(jì)方案,明顯縮短開發(fā)時(shí)間,節(jié)約成本；無論是U75V還是U71Mn材質(zhì)的滑軌,正火態(tài)接頭的斷面收縮率和斷后伸長率相比于焊態(tài)接頭的均有很大程度的提升,但是抗拉強(qiáng)度變化不大,正火態(tài)接頭的抗拉強(qiáng)度比焊態(tài)略高。
[Abstract]:Crane slide rail is widely used in various fields of crane work, crane is one of the most widely used engineering equipment, power plant, nuclear power, wharf, water conservancy, tunnel, bridge, petrochemical, metallurgy, The demand for construction and other industries is enormous. With the increasing use of slide rails in major projects such as metallurgy, transportation, mining, aviation, aerospace and other major projects in China, The requirement of welding head quality of crane slide rail is more and more high. Because the welding joint quality of crane slide rail is related to the safety and benefit of engineering use and the construction of national defense project, it is of great significance to ensure the spot welding quality of crane slide rail. Aiming at the problems of welding and post-welding heat treatment of crane slide rail in the field, the quality of the joint is studied separately. In the welding stage, the welding process parameters detected by the acquisition system are statistically analyzed. The field welding quality of slide rail is studied. In the stage of post welding heat treatment, the effect of post weld heat treatment process on joint quality is summarized and analyzed by comparing and analyzing the test results of joint process in different states. In order to ensure the quality of normalizing heat treatment, the optimization design of normalizing heater is carried out according to the special section structure of crane slide rail by using ANSYS finite element analysis software. The results show that using flash welding technology to realize seamless connection of QU100 crane slide rail is feasible and practical effect is good, but gray spot is the most common defect, so we should pay attention to prevent and control its occurrence, this kind of defect often appears in the rail bottom area or rail corner. Different shapes and sizes are harmful to the performance of the joints; the post-welding heat treatment process of the crane rail is very useful to improve the quality of the joints of the crane rails; the heater is optimized by the numerical simulation method. Can quickly and accurately work out the optimized design plan, obviously shorten the development time, save the cost; whether it is the slide rail of U75V or U71Mn material, The cross section shrinkage and the elongation after break of normalizing joint are greatly increased compared with that of welded joint, but the tensile strength of normalizing joint is slightly higher than that of welded joint, however, the tensile strength of normalizing joint is slightly higher than that of welded joint, but the tensile strength of normalizing joint is slightly higher than that of welded joint.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TH21;TG441.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 呂其兵,戴小剛,戴虹,譚克利,向朝;基于高速采集的鋼軌交流閃光焊質(zhì)量特征的提取與分析[J];電焊機(jī);2005年05期

2 王新年,戴虹,呂其兵;鋼軌高效化閃光焊技術(shù)[J];電焊機(jī);2005年05期

3 胡允錄,劉建坡,呂其兵;鋼軌脈動(dòng)閃光焊的焊接缺陷及消除方法[J];電焊機(jī);2005年07期

4 趙敏;;運(yùn)用鋁熱焊長鋼軌技術(shù)焊接起重機(jī)軌道[J];起重運(yùn)輸機(jī)械;2007年01期

5 湯秀麗;張玉;;焊接軌道在通用橋式起重機(jī)上的應(yīng)用[J];起重運(yùn)輸機(jī)械;2012年03期

6 丁韋,黃辰奎,楊來順,高文會(huì),張震,王貴山;火焰正火對(duì)鋼軌焊接接頭金相組織及力學(xué)性能的影響[J];鐵道工程學(xué)報(bào);2002年04期

7 王振強(qiáng),戴虹,呂其兵,譚克利;無縫線路鋼軌現(xiàn)場(chǎng)焊接質(zhì)量研究[J];鐵道建筑;2005年08期

8 呂其兵,戴虹,駱德陽,諸昌鈐;鋼軌閃光焊質(zhì)量信息的采集與控制研究[J];鐵道學(xué)報(bào);2003年01期

9 韓振江,張建平;051基地火箭滑車軌道設(shè)計(jì)要點(diǎn)分析[J];中國鐵路;2004年11期

10 楊其全;鄒定強(qiáng);胡杰;;灰斑夾雜引起的鋼軌閃光焊接頭傷損研究[J];中國鐵路;2011年06期

相關(guān)碩士學(xué)位論文 前2條

1 李鑄;AMS60鋼軌交流閃光焊機(jī)改造[D];西南交通大學(xué);2007年

2 陳建;鋼軌閃光焊接頭質(zhì)量檢測(cè)與預(yù)測(cè)[D];西南交通大學(xué);2010年

，

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