本文關鍵詞： 多道次 連續(xù)感應淬火 數(shù)值模擬 相變 回火　出處：《武漢理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：三維點式連續(xù)感應淬火過程是一種新型的局部感應淬火工藝,該工藝通常采用一個單匝銅管線圈并鑲嵌一個形狀尺寸合適的導磁體作為熱源,在工件的表面連續(xù)移動并實現(xiàn)加熱淬火。由于線圈本身尺寸較小,和傳統(tǒng)多匝線圈相比其運動方式更加靈活,且通常被安裝在數(shù)控機床上,其熱處理的深度和范圍可精確控制,因而適用于各類具有復雜形狀工件的表面熱處理。本文基于點式連續(xù)感應淬火的特點,通過有限元軟件ANSYS進行了數(shù)值模擬研究,并在自主研發(fā)的感應淬火系統(tǒng)中對實際工件進行了感應淬火處理,然后進行了金相和顯微硬度測試,將模擬結果和實驗結果進行了對比和討論。首先,介紹了感應加熱的基本原理,并推導了點式感應淬火過程中電磁場和溫度場的理論公式,建立了點式感應淬火的數(shù)學模型。在數(shù)學模型的基礎上,結合有限元軟件ANSYS中多物理場耦合模塊,建立了點式連續(xù)感應淬火的有限元模型。其次,基于有限元模型進行了三維點式連續(xù)感應淬火過程的研究,分析了各個工藝參數(shù)對點式連續(xù)感應淬火過程的影響,并結合CCT曲線和梅尼爾模型,利用ANSYS軟件中的APDL語言編寫程序,對淬火后組織和顯微硬度進行了預測;同時基于感應淬火實驗系統(tǒng)進行了點式連續(xù)感應淬火實驗,對數(shù)值模擬結果進行了驗證,說明了模擬結果的可靠性。最后,基于點式感應淬火的研究,建立了多道次連續(xù)感應淬火(二道次和三道次)的有限元模型,分別進行了二道次和三道次的連續(xù)感應淬火過程的研究,并結合回火方程,分析了多道次連續(xù)感應淬火過程中的回火效應,得到了軌跡重疊寬度對多道次連續(xù)感應淬火后工件的溫度場、組織和硬度分布的影響規(guī)律,并進行了實驗驗證。分析過程為不規(guī)則三維曲面任意路徑的移動感應淬火數(shù)值模擬提供了解決思路。
[Abstract]:Three-dimensional continuous induction quenching process is a new type of local induction quenching process, which usually uses a single-turn copper tube coil with an appropriate shape and size of magnetic conductors as the heat source. Due to the small size of the coil itself, it is more flexible than the traditional multi-turn coil, and is usually installed on the NC machine tool. The depth and range of heat treatment can be precisely controlled, so it is suitable for surface heat treatment of various kinds of workpieces with complex shape. This paper is based on the characteristics of point-type continuous induction quenching. Numerical simulation was carried out by finite element software ANSYS, and the actual workpiece was treated with induction quenching in induction quenching system, and then metallographic and microhardness tests were carried out. The simulation results and experimental results are compared and discussed. Firstly, the basic principle of induction heating is introduced, and the theoretical formulas of electromagnetic field and temperature field during point induction quenching are derived. The mathematical model of point-type induction quenching is established. Based on the mathematical model, the finite element model of point-type continuous induction quenching is established in combination with the multi-physical field coupling module in the finite element software ANSYS. Secondly, the finite element model of point-type continuous induction quenching is established. Based on the finite element model, the process of 3D point-type continuous induction quenching is studied, and the influence of various process parameters on the process of point-type continuous induction quenching is analyzed. The CCT curve and Mesnil model are combined. The microstructure and microhardness after quenching were predicted by using APDL language in ANSYS software. At the same time, the point-type continuous induction quenching experiment is carried out based on the induction quenching experimental system, and the numerical simulation results are verified to illustrate the reliability of the simulation results. Finally, based on the point-type induction quenching research. The finite element model of multi-pass continuous induction quenching (two-pass and three-pass) was established. The continuous induction quenching process of two-pass and three-pass was studied, and the tempering equation was combined. The tempering effect of multi-pass continuous induction quenching is analyzed, and the influence of track overlap width on temperature field, microstructure and hardness distribution of workpiece after multi-pass continuous induction quenching is obtained. The analysis provides a solution for the numerical simulation of moving induction quenching with arbitrary path of irregular 3D surface.
【學位授予單位】：武漢理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG156.3

【參考文獻】

相關期刊論文 前9條

1 賀連芳;李輝平;蓋康;孔令亮;崔洪芝;李木森;;55CrMo鋼感應淬火工藝的數(shù)值模擬及工藝優(yōu)化[J];材料熱處理學報;2015年01期

2 陳浩;秦訓鵬;汪舟;高愷;;三維點式感應淬火電磁熱耦合場數(shù)值模擬[J];中國表面工程;2013年01期

3 Jae-Ho LEE;Jeong-Hwan JANG;Byeong-Don JOO;Young-Myung SON;Young-Hoon MOON;;Laser surface hardening of AISI H13 tool steel[J];Transactions of Nonferrous Metals Society of China;2009年04期

4 周海;曾少鵬;袁石根;;感應加熱淬火技術的發(fā)展及應用[J];熱處理技術與裝備;2008年03期

5 張小國,袁慶丹;汽車車體覆蓋件模具設計與制造[J];機床與液壓;2004年08期

6 姜建華,鄭華毅;厚壁筒形工件連續(xù)感應熱處理有限元模擬[J];金屬熱處理學報;2002年02期

7 肖新棉;感應加熱線圈中的電磁場[J];武漢水利電力大學學報;1996年06期

8 肖國春;圓管感應加熱工件內電參數(shù)的計算[J];工業(yè)加熱;1993年04期

9 干肇智;感應加熱的數(shù)值計算[J];電爐;1985年05期

相關碩士學位論文 前4條

1 吳強;鋼板感應加熱工藝參數(shù)實驗分析與數(shù)值模擬[D];大連理工大學;2009年

2 劉曉光;感應透熱溫度場仿真技術的研究[D];浙江工業(yè)大學;2009年

3 趙敏;45鋼坯鍛前感應加熱的有限元模擬分析[D];浙江工業(yè)大學;2006年

4 程亦晗;平板移動感應加熱磁—熱耦合場數(shù)值模擬研究[D];天津大學;2005年

，

本文編號：1443421