【摘要】：本文針對(duì)軸承座可再制造性從技術(shù)性因子、環(huán)境性因子和經(jīng)濟(jì)性因子等方面對(duì)軸承座再制造技術(shù)進(jìn)行了研究,應(yīng)用常溫冷焊重熔、逆變脈沖電刷鍍和膠粘等特種修復(fù)技術(shù),嘗試對(duì)軸承座不同的失效形式選擇不同的單一修復(fù)技術(shù)或復(fù)合修復(fù)技術(shù),為軸承座再制造提供理論基礎(chǔ)。對(duì)軸承座再制造后的質(zhì)量檢測(cè)內(nèi)容包括硬度,金相組織,結(jié)合區(qū)微觀形貌,孔同軸度檢測(cè)。主要利用HT250為基體作為試件,模擬磨損情況利用低碳鋼修復(fù)后,對(duì)試件利用硬度計(jì)和掃描電鏡觀察修復(fù)區(qū)和基體結(jié)合處,修復(fù)區(qū)硬度和基體硬度基本保持一致,修復(fù)區(qū)組織結(jié)構(gòu)致密,無(wú)氣泡、裂紋。結(jié)合處長(zhǎng)度大約為300Um,基體幾乎無(wú)變形。修復(fù)區(qū)耐磨性比基體有明顯提高。修復(fù)后對(duì)軸承座孔的同軸度進(jìn)行檢測(cè)。通過(guò)有限元軟件ANSYS對(duì)常溫冷焊重熔技術(shù)工藝參數(shù)進(jìn)行了研究,在電極壓力和緊壓時(shí)間分別以20N,25N,30N;0.5s,1.Os,1.5s進(jìn)行了九次仿真模擬實(shí)驗(yàn),得出不同參數(shù)下等效應(yīng)力和基體變形的變化規(guī)律。變形基本不隨著參數(shù)的變化而變化,開始時(shí)電極壓力越大則等效應(yīng)力減小,但當(dāng)超出一個(gè)峰值時(shí)瞬間增大。而隨之緊壓時(shí)間增加等效應(yīng)力變小,由此得出最佳工藝參數(shù)。結(jié)合軸承座再制造修復(fù)實(shí)踐,本文模擬人工操作手法,設(shè)計(jì)一臺(tái)冷焊半自動(dòng)進(jìn)給裝置的樣機(jī),可以提高常溫冷焊重熔焊接效率、緩解工人勞動(dòng)強(qiáng)度,具有一定的工程實(shí)用價(jià)值。
[Abstract]:In this paper, the remanufacturing technology of bearing seat is studied in terms of technical factors, environmental factors and economic factors, and special repair techniques such as cold welding at room temperature, reverse-pulse brush plating and adhesive adhesion are used. This paper attempts to choose different single repair technology or composite repair technology for different failure forms of bearing seat, which provides theoretical basis for bearing seat remanufacture. The quality test of the bearing seat after remanufacturing includes hardness, metallographic structure, micromorphology of the combined zone, and the coaxiality of the pore. Using HT250 as the base material, the hardness of the repair zone and the matrix bond were observed by hardness meter and scanning electron microscope. The hardness of the repair zone was basically consistent with that of the matrix, and the hardness of the repair zone was basically the same as that of the matrix, and the hardness of the repair zone was basically consistent with that of the matrix. The structure of the repair zone is compact, without bubble and crack. The length of the bond is about 300 Um, and the matrix has almost no deformation. The wear resistance of the repair zone is obviously higher than that of the matrix. After repairing, the coaxial degree of the bearing hole is tested. The process parameters of remelting technology in room temperature cold welding were studied by finite element software ANSYS. Nine simulation experiments were carried out at the electrode pressure and the compaction time, respectively, using 20Nb25NU 30NU 0.5sL 1.OsO1.5s, and the variation law of the equal effect force and the matrix deformation under different parameters were obtained. The deformation basically does not change with the change of the parameters. The higher the electrode pressure at the beginning, the smaller the equivalent stress, but the more the peak value is, the more the equivalent stress increases. With the increase of compaction time, the equivalent stress becomes smaller, and the optimum process parameters are obtained. Combined with the practice of remanufacture and repair of bearing seat, this paper simulates manual operation and designs a prototype of cold welding semi-automatic feed device, which can improve the efficiency of remelting welding at room temperature, ease the labor intensity of workers, and has certain engineering practical value.
【學(xué)位授予單位】：北方工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH16

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 馬中山;張志強(qiáng);鄭春海;;擠壓機(jī)壓輥軸頸及軸承座孔激光熔覆修復(fù)[J];純堿工業(yè);2014年03期

2 徐濱士;董世運(yùn);史佩京;;中國(guó)特色的再制造零件質(zhì)量保證技術(shù)體系現(xiàn)狀及展望[J];機(jī)械工程學(xué)報(bào);2013年20期

3 程守寶;彭明亮;李建彩;原衛(wèi)紅;李華萍;;再制造技術(shù)在萬(wàn)能軋機(jī)軸承座上的應(yīng)用[J];機(jī)械工程師;2013年08期

4 趙明;;起重機(jī)回轉(zhuǎn)減速器軸承座的修復(fù)[J];工程機(jī)械與維修;2013年06期

5 徐慶鐘;李方義;秦順順;馬石磊;;冷焊工藝參數(shù)對(duì)HT250表面修復(fù)層性能的影響[J];機(jī)械工程學(xué)報(bào);2013年07期

6 徐濱士;董世運(yùn);朱勝;史佩京;;再制造成形技術(shù)發(fā)展及展望[J];機(jī)械工程學(xué)報(bào);2012年15期

7 何甲;;離心泵軸承座損壞的修復(fù)利用[J];貴州化工;2012年03期

8 安偉;王育欣;王英杰;;康明斯K38發(fā)動(dòng)機(jī)缸體主軸承座孔修復(fù)技術(shù)的研究與應(yīng)用[J];硅谷;2012年06期

9 宋保華;麻軼成;黨亮;;采用復(fù)合焊接法修復(fù)減速器軸承座孔[J];工程機(jī)械與維修;2011年04期

10 張慶;孟令東;楊軍偉;原津萍;;高能脈沖精密冷補(bǔ)技術(shù)用于修復(fù)零件表面局部缺損[J];中國(guó)表面工程;2011年01期

相關(guān)碩士學(xué)位論文 前7條

1 馬梅;機(jī)床主軸箱零部件再制造工藝及技術(shù)研究[D];北方工業(yè)大學(xué);2016年

2 呂晶晶;鍺基太陽(yáng)電池平行間隙電阻焊接過(guò)程建模與仿真分析[D];南京航空航天大學(xué);2015年

3 張冬冬;電阻點(diǎn)焊參數(shù)的優(yōu)化與質(zhì)量預(yù)測(cè)模型的建立[D];湖北工業(yè)大學(xué);2012年

4 司丹;鑄件特種修復(fù)技術(shù)的研究與應(yīng)用[D];北方工業(yè)大學(xué);2011年

5 李江英;汽車自動(dòng)變速箱零件再制造技術(shù)的研究[D];北方工業(yè)大學(xué);2010年

6 史家迎;機(jī)床再制造技術(shù)研究[D];山東大學(xué);2009年

7 陶春華;金屬粉末激光熔覆成形的基礎(chǔ)試驗(yàn)與模擬[D];大連理工大學(xué);2008年

，

本文編號(hào)：2154704