天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

當(dāng)前位置:主頁 > 科技論文 > 機械論文 >

工程機械產(chǎn)品可再制造性與金屬腐蝕程度評價研究

發(fā)布時間:2018-06-10 19:57

  本文選題:再制造 + 可再制造性; 參考:《天津大學(xué)》2012年碩士論文


【摘要】:再制造工程由于其豐厚的環(huán)境、資源和社會效益而受到廣泛的關(guān)注,成為實現(xiàn)可持續(xù)發(fā)展的一個重要方法,材料腐蝕和再制造息息相關(guān)。本文結(jié)合工程機械產(chǎn)品可再制造性評價與金屬腐蝕程度評價開展研究。本文參照國內(nèi)外研究總結(jié)的產(chǎn)品可拆卸性評估方法模型和產(chǎn)品可再制造性的模型,對ZL50裝載機變速箱的拆卸過程和其可再制造性進行了系統(tǒng)的研究。利用Microsoft Visual C++語言開發(fā)出產(chǎn)品可再制造性評價系統(tǒng),目前已實現(xiàn)的功能為:計算經(jīng)濟性和技術(shù)性指數(shù),存儲和查詢相關(guān)數(shù)據(jù)。產(chǎn)品可再制造性評價系統(tǒng)的開發(fā)簡化了產(chǎn)品可再制造性指數(shù)的計算過程并可以系統(tǒng)地存儲相關(guān)數(shù)據(jù),對產(chǎn)品的可再制造性研究具有一定的意義。在收集大量數(shù)據(jù)和實驗的基礎(chǔ)上,利用本文開發(fā)的軟件對ZL50裝載機變速箱的可再制造性系統(tǒng)的研究和評價,驗證了該軟件的正確率和實用性。 材料腐蝕也是和再制造相關(guān)的問題,本文研究了利用圖像處理技術(shù)定性和定量評價金屬腐蝕程度,應(yīng)用適用于現(xiàn)場暴露試樣的三維腐蝕形貌圖像采集系統(tǒng)對Q235鋼模擬大氣環(huán)境的腐蝕形貌圖像進行了采集。為了消除固定孔和邊緣的影響對所采集到得圖像統(tǒng)一進行裁剪,之后轉(zhuǎn)換為灰度圖像,進行中值濾波處理,濾除圖像采集過程中的噪聲,為了更好的觀察圖像的細節(jié)信息,根據(jù)熵標準應(yīng)用小波包變換對預(yù)處理后的圖像進行分解,選取最優(yōu)子圖像后并提取其能量值。實驗結(jié)果表明根據(jù)圖像能量值的變化可以對腐蝕試樣進行定性的判斷,進一步根據(jù)計算出的圖像特征值可以定量的判斷大氣腐蝕早期腐蝕程度。實驗結(jié)果表明,,該方法可以對Q235鋼模擬大氣腐蝕早期行為進行判斷和預(yù)測。
[Abstract]:Because of its rich environment, resources and social benefits, remanufacturing engineering has been widely concerned. It has become an important method to achieve sustainable development, material corrosion and remanufacturing are closely related. In this paper, the remanufacturability evaluation of construction machinery products and the evaluation of metal corrosion degree are studied. In this paper, the disassembly process and remanufacturability of ZL50 loader gearbox are systematically studied according to the evaluation method model of product detachability and the model of product remanufacturability summarized at home and abroad. A product remanufacturability evaluation system is developed by using Microsoft Visual C language. At present, the functions that have been realized are: calculating economic and technical indexes, storing and querying related data. The development of product remanufacturability evaluation system simplifies the calculation process of product remanufacturability index and can store relevant data systematically, which is of certain significance to the research of product remanufacturability. On the basis of collecting a large number of data and experiments, the research and evaluation of the remanufacturing system of the ZL50 loader gearbox is carried out by using the software developed in this paper. The correctness and practicability of the software are verified. Material corrosion is also a problem related to remanufacturing. This paper studies the qualitative and quantitative evaluation of metal corrosion using image processing technology. The corrosion morphology images of Q235 steel in simulated atmospheric environment were collected by using a 3D corrosion image acquisition system suitable for field exposed samples. In order to eliminate the influence of fixed hole and edge, the collected image is cut uniformly, then converted into gray image, and then processed by median filter, and the noise in the process of image acquisition is filtered, and the detailed information of the image is observed better. According to entropy standard, wavelet packet transform is used to decompose the preprocessed image, select the optimal sub-image and extract its energy value. The experimental results show that the corrosion samples can be judged qualitatively according to the change of image energy value, and the corrosion degree of early atmospheric corrosion can be quantitatively judged according to the calculated image eigenvalues. The experimental results show that this method can be used to predict the early simulated atmospheric corrosion behavior of Q235 steel.
【學(xué)位授予單位】:天津大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH16;TG172

【參考文獻】

相關(guān)期刊論文 前10條

1 徐濱士,張偉,馬世寧,劉世參;向21世紀的綠色再制造[J];中國表面工程;1999年04期

2 徐濱士,梁秀兵,李仁涵;綠色再制造工程的進展[J];中國表面工程;2001年02期

3 朱紹華,劉世參,朱勝;談綠色再制造工程的內(nèi)涵和學(xué)科構(gòu)架[J];中國表面工程;2001年02期

4 徐濱士,馬世寧,劉世參,朱紹華,張偉,朱勝;綠色再制造工程設(shè)計基礎(chǔ)及其關(guān)鍵技術(shù)[J];中國表面工程;2001年02期

5 羅震,單平,易小林,侯賢忠;油田儲罐再制造技術(shù)的研究與應(yīng)用[J];中國表面工程;2001年02期

6 徐濱士,劉世參,史佩京,邢忠,謝建軍;汽車發(fā)動機再制造效益分析及對循環(huán)經(jīng)濟貢獻研究[J];中國表面工程;2005年01期

7 梁志杰 ,姚巨坤;發(fā)動機再制造綜述[J];新技術(shù)新工藝;2004年10期

8 朱子新,徐濱士,朱紹華,杜則裕;再制造工程的現(xiàn)狀與應(yīng)用前景[J];機械工藝師;2001年05期

9 孔德英,王守琰,宋詩哲;金屬材料腐蝕形貌圖像與實海掛片數(shù)據(jù)的相關(guān)性研究[J];中國腐蝕與防護學(xué)報;2001年06期

10 汪軒義,王光雍,屈祖玉,李長榮;環(huán)境因素對碳鋼和低合金鋼大氣腐蝕的影響[J];中國腐蝕與防護學(xué)報;1995年02期



本文編號:2004413

資料下載
論文發(fā)表

本文鏈接:http://sikaile.net/kejilunwen/jixiegongcheng/2004413.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶5b919***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com