臺灣博碩士論文加值系統

本研究係以沃斯田鐵型不銹鋼(SUS 304)、肥粒鐵型不銹鋼(SUS 430)與Kovar合金三種金屬薄板作搭接組合。以不同的電極材料、充電電壓、操作壓力與浮凸點高度進行電阻浮凸銲接。目的為探討不同種類的金屬薄板與製程參數對銲核面積與最大拉力的影響。實驗結果發現增加充電電壓提高了熱輸入量，有助於銲核的成長，在相同的銲接參數下，若使用的電極之導電率較高其銲核面積也較大，而操作壓力增加也會使銲核面積稍微上升。若充電電壓過低時，過多的操作壓力會使浮凸點未熔融前已將浮凸點壓潰，造成銲點強度的降低。而在低充電電壓60V時，由於熱輸入量不足以讓浮凸點形成熔融狀態，因此無法形成一有效的接合。銲點拉伸破斷呈現近圓形帶有新月形殘料的破斷型式，新月形的區域面積比較大，銲件能承受的最大拉力也比較高。由微硬度試驗的結果得知，以不同的製程參數進行電阻浮凸銲，其銲核硬度並未有明顯的變化。

In this study, austenitic stainless steel (SUS 304), ferrite stainless steel (SUS 430) and Kovar alloy sheets were resistance projection welded as lap joints. The process parameters were steel sheet combination in joints and test some important parameters as electrode material, charging voltage, operating pressure and projection height; on the nugget area and maximum tensile force of the welded joint were experimentally investigated. The results showed that increasing charging voltage increased heat input and therefore weld nugget growth. Also, high conductivity electrode material or increased operating pressure, nugget area could be improved significantly. If the selected charging voltage was too small, larger an electrode force was applied, caused premature mechanical collapse of the projection and thus decreased in tensile property. In 60V charging voltage, the heat input could not generate enough heat to cause melting and coalescence of the sheets forming a sound fusion joint. Fracture type was observed as crescent shape, larger area showed higher tensile force value. Vickers micro hardness results showed that the weld nugget hardness for all welding conditions did not show many differences

中文摘要 …………………………………………………………... i
英文摘要 …………………………………………………………... ii
誌謝 …………………………………………………………... iii
表目錄 …………………………………………………………... vi
圖目錄 …………………………………………………………... vii
第一章 緒論…………………………………………………....... 1
1.1
1.2 研究背景與動機………………………………………...
研究方法與目的…………………………...…………… 1
2
第二章 文獻探討………………………………………………... 4
2.1 電阻銲接技術…………………………………………... 4
2.1.1 電阻銲接之特點…………………………...…………… 4
2.1.2 電阻銲的優點…………………...…………………….... 6
2.2 電阻點銲之原理與應用………………………………... 6
2.2.1 點銲熔接………………………………………………... 6
2.2.2 影響電阻銲接的因素…………………………………... 8
2.2.3 熱平衡、散熱及溫度分布……………………………… 17
2.2.4 電阻銲的銲接循環……………………………………... 18
2.2.5 銲接電流的種類和適用範圍…………………………... 20
2.2.6 電阻銲的銲接性評估…………………………………... 21
2.2.7 電阻點銲之種類………………………………………... 22
2.3 電阻浮凸銲……………………………………………... 24
2.3.1 浮凸點…………………………………………………... 32
2.4 封裝合金………………………………………………... 33
2.4.1 Kovar合金……………………………………………… 34
2.4.2 不銹鋼…………………………………………………... 34
2.5 國內外電阻銲研究文獻回顧…………………………... 37
第三章 實驗方法與步驟………………………………………... 43
3.1 試片製作…………………...………………………….... 44
3.1.1 浮凸點製作……………………...…………………….... 45
3.2 電阻銲接………………………………………………... 46
3.2.1 電極……………………………………………………... 48
3.2.2 電阻銲接製程…………………………………………... 49
3.3 拉伸剪力測驗…………………………………………... 50
3.4 金相顯微組織…………………………………………... 51
3.4.1 冷鑲埋…………………………………………………... 51
3.4.2 研磨、拋光與腐蝕……………………………………… 53
3.5 EDS成份分析……………………………..…………… 55
3.6 銲核硬度量測…………………………………………... 56
第四章 實驗結果與討論………………………………………... 57
4.1 銲接參數對銲核面積之影響…...……………………… 57
4.2 銲接參數對銲道顯微組織之影響………………...….... 60
4.3 銲接參數對銲點承受最大拉力之影響………………... 67
4.4 破斷點形態觀察………………………………………... 70
4.5 銲核之能量散佈光譜儀分析…………………………... 85
4.6 銲核硬度量測…………………………………………... 86
第五章 結論……………………………………………………... 90
參考文獻 …………………………………………………………... 92

[1]中國機械工程學會銲接學會、電阻銲(Ⅲ)專業委員會，1994，電阻銲理論與實踐，機械工業出版社，北京。
[2]劉信男，TIG銲接實務與電阻點銲技術，全華科技圖書，民國80年11月.
[3]American Welding Society,1999,WELDING HANDBOOK, Volume 2,Eighth Edition,American.
[4]http://www.hightempmetals.com/index.php High Temp Metals. Home page
[5]http://www.valtech.to/ (株)バルテック
[6]陳永昌 等，2005，“Kovar合金與SPCC鋼薄板之小型電阻浮凸縫銲研究”，臺灣銲接協會九十四年年會論文集，頁154~161，臺灣。
[7]曾光宏 等，2008，“TO-CAN組件之電容放電式電阻銲接技術”，銲接與切割，第18卷，4期，頁69~73，郭興家，12月1日。
[8]Her-Yueh Huang,Kuang-Hung Tseng,2009, “Resistance projection welding for TO-Can style package”,Acta Metall. Sin.(Engl. Lett.), Vol.22 ,No.4 ,p.255-262.
[9]近藤　正恒 等，2009，“合金化溶融亜鉛めっき鋼板と裸鋼板を混合打点した抵抗スポット溶接の電極消耗変化”， 溶接学会論文集，第27 巻，第４号，p. 352-359，日本。
[10]J.B. Shamsul ,M.M. Hisyam,2007, “Study Of Spot Welding Of Aus- tenitic Stainless Steel Type 304” , Journal of Applied Sciences Research, 3,11,p.1494-1499.
[11]Murat Vural, Ahmet Akkus,2004, “On the resistance spot weldability of galvanized interstitial free steel sheets with austenitic stainless steel sheets”, Journal of Materials Processing Technology,p.153–154.
[12]S. Aslanlar,et al.,2008, “Welding time effect on mechanical properties of automotive sheets in electrical resistance spot welding”,Materials and Design 29 (2008), p1427-1431.
[13] http://www.anchorbronze.com/ Anchor Bronze & Metals. Home page
[14]中國機械工程學會銲接學會，中國銲接手冊，第二版，第一卷，銲接方法及設備，頁344~352，北京。
[15]Auto/Steel Partnership,2000, An Investigation of Resistance Welding Performance of Advanced High-Strength Steels, Town Center,USA.
[16]E.J. DEL VECCHIO, 1956 , Resistance Welding Manual , Vol.1,3th,p.42-52 .
[17]W.h. Kearns,Resistance and Solid-State Welding and Other Joining Processes,Vol.3,7th,p.28-55.
[18]Kaiser, J. G., Dunn, G. J. and Eagar, T. W.,1982, The Effect of Electrical Resistance on Nugget Formation During Spot Welding, Welding Research Supplement, p. 167-174.
[19]Cho, H. S. and Cho, Y. J.,1989, “A Study of Thermal Behavior Resistance Spot Welds”, Welding Research Supplement, p. 236-244.
[20]AWS D8.9-97, “Recommended Practices for Test Methods for Evaluating the Resistance Spot Welding Behavior of Automotive Sheet Steels”, American Welding Society,USA.
[21]Khan, J. A., Xu, L. and Chao, Y. J.,1999, “Prediction of Nugget Development During Resistance Spot Welding Using Coupled Thermal Electrical Mechanical Model”, Science and Technology of Welding Joining, Vol4, p. 201-207.
[22]Omar, A. A.,1998,” Effects of Welding Parameters on Hard Zone Formation at Dissimilar Metal Welds”, Welding Research Supplement, p. 86-93.
[23]A.R. Krause, R.A. Chernenkoff, 1995, A comparative study of thefatiguebehavior of spot welded and mechanically fastened aluminum joints, in: Proceedings of the SAE International Congress and Exposition, Detroit, MI, USA.
[24]Sun, X.,2001, “Effect of Projection Height on Projection Collapse and Nugget Formation a Finite Element Study”, Welding Journal, p. 211-216.
[25]J. W. Mitchell and U. I. Chang, Ford Motor Co.,1975, “Resistance-Spot Welding of Microalloyed Steels for Automotive Applications,” Proceedings from Micro-Alloying75 Conference, Oct.1-3,p.599 - 605.
[26]J. Linder, A. Melander, M. Larrson, Y. Bergengren,1988, “Fatigue designof spot welded austenitic and duplex stainless steel sheets”,FractureEng.,p.673–686.
[27]2. J. M. Sawhill and S. T. Furr, Bethlehem Steel Corp.,1984, “Weldability Considerations in the Development of High Strength SheetSteels,” Welding ResearchSupplement to the AWS Welding Journal, p.203-212.
[28]Senkara, J., Hang, H. Z. and Hu, S. J.,2004, “Expulsion Prediction Resistance Spot Welding”, Welding Journal, p. 123-132.
[29]Ch. Ed. Guillaume, Compt. Rend. Acad. Sci. Paris 170, 1554, 1920.
[30]F.Y. Huang, H.M. Chow, S.L. Chen , K.A. Yan ,1999, “The machine- ability of KOVAR material”, Journal of Materials Processing Techno logy, 87, p. 122-118 .
[31]ASTM, 1966,1996 Annual book of ASTM standards：section 10,vol. 10. 04, USA.
[32]Arun K. Varshneya, 1982 “Stresses in Glass-to-Metal Seals”, Treatise on Materials Science and Technology., Vol. 22 Academic Press, New York. p. 241-306.
[33]Kotaro Honda,1978, Physics and applications of invar alloys, Maru- zen company, ltd., Tokyo.