本文選題：鋼　切入點(diǎn)：銅　出處：《南京理工大學(xué)》2015年碩士論文

【摘要】：本文在感應(yīng)加熱基本原理的基礎(chǔ)上,結(jié)合在銅鋼異種金屬焊接過程中采用的高頻感應(yīng)熔敷焊工藝特點(diǎn),以電磁學(xué),傳熱學(xué)等方面的知識(shí)和有限元法為理論基礎(chǔ),根據(jù)工件的尺寸以及焊接過程中與設(shè)備的相對位置,建立了銅鋼高頻感應(yīng)熔敷焊的數(shù)學(xué)模型。利用ANSYS對銅鋼感應(yīng)熔敷焊過程中的溫度場進(jìn)行模擬,通過設(shè)定焊接時(shí)間,在其他條件相同的情況下設(shè)定不同的參數(shù),來模擬在不同參數(shù)下的溫度場,初步探討各個(gè)參數(shù)對感應(yīng)加熱效果的影響,用以指導(dǎo)實(shí)際焊接。簡要地介紹了感應(yīng)加熱的基本原理及存在的效應(yīng),同時(shí)介紹了電磁場的有限元數(shù)學(xué)模型和溫度場的有限元數(shù)學(xué)模型以及邊界條件,為ANSYS的數(shù)值分析提供了理論基礎(chǔ)。此外還簡要介紹了ANSYS軟件以及一般分析流程。在其他條件相同的情況下,分別通過改變加熱時(shí)間,加熱電源的頻率,感應(yīng)器線圈的直徑,工件與感應(yīng)器線圈的間隙,感應(yīng)器線圈的高度及感應(yīng)器線圈位置,來分析上述因素對于感應(yīng)加熱效果的影響。通過設(shè)定焊接參數(shù),進(jìn)行實(shí)際焊接,并對實(shí)際焊接中鋼基體內(nèi)與銅帶上端等高處一點(diǎn)進(jìn)行溫度測量,得到該點(diǎn)的溫度循環(huán)曲線,與焊接模擬中相對應(yīng)的點(diǎn)的循環(huán)曲線進(jìn)行比較,發(fā)現(xiàn)誤差在10%以內(nèi),且溫度變化的總體趨勢相同。將得到的焊接接頭進(jìn)行剪切試驗(yàn),發(fā)現(xiàn)強(qiáng)度達(dá)到183MPa,符合要求。
[Abstract]:Based on the basic principles of induction heating and the characteristics of high-frequency induction deposition welding used in the welding of copper and steel dissimilar metals, this paper is based on the knowledge of electromagnetism, heat transfer and finite element method. According to the dimension of the workpiece and the relative position between the welding process and the equipment, the mathematical model of high frequency induction deposition welding of copper steel is established. The temperature field in the process of induction deposition welding of copper steel is simulated by ANSYS, and the welding time is set up. Under the same conditions, different parameters are set to simulate the temperature field under different parameters, and the effect of each parameter on the induction heating effect is discussed preliminarily. The basic principle and existing effects of induction heating are briefly introduced. The finite element mathematical model of electromagnetic field, the finite element mathematical model of temperature field and the boundary conditions are also introduced. It provides a theoretical basis for the numerical analysis of ANSYS. In addition, the ANSYS software and the general analysis flow are briefly introduced. Under the same conditions, the heating time, the frequency of the heating power supply, the diameter of the inductor coil are changed, respectively, by changing the heating time, the frequency of the heating power supply and the diameter of the inductor coil. The gap between the workpiece and the inductor coil, the height of the inductor coil and the position of the inductor coil are analyzed to analyze the effect of the above factors on the induction heating effect. The temperature of the steel base body and the upper end of the copper strip is measured and the temperature cycle curve of the point is obtained, which is compared with that of the corresponding point in the welding simulation. The error is found to be within 10%. And the general trend of temperature change is the same. The shear test of the welded joint will show that the strength of the welded joint is up to 183 MPA, which meets the requirements.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG457.1

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本文編號(hào)：1660773