고주파유도용접된 열교환기용 BAS121합금튜브의 기계적 특성에 미치는 인발조건의 영향

한상우; 김병일; 이현우; 전우용; 국진선; Sang-Woo Han; Byung-Il Kim; Hyun-Woo Lee; Woo-Young Chon; Jin-Seon Gook

Korean Journal of Materials Research, Vol.14, No.12, 851-856, December, 2004

DOI10.3740/MRSK.2004.14.12.851 Export Citation

고주파유도용접된 열교환기용 BAS121합금튜브의 기계적 특성에 미치는 인발조건의 영향

Effects of Drawing Parameters on Mechanical Properties of BAS121 Alloy Tubes for Heat-exchangers by High Frequency Induction Welding

한상우, 김병일, 이현우¹, 전우용², 국진선^{3, †}

순천대학교 신소재응용학부
¹전북대학교 신소재공학부
²광양보건대학 치기공과
³한려대학교 신소재공학과

Sang-Woo Han, Byung-Il Kim, Hyun-Woo Lee¹, Woo-Young Chon², and Jin-Seon Gook^{3, †}

Materials Science and Metallurgical Engineering, Sunchon National University, Sunchon, 540-742, Korea
¹School of Advanced Materials Engineering, Chonbuk National University, Chonju, 561-756, Korea
²Dept. of Dental Technology, Kwangyang Health College, Kwangyang 545-704, Korea
³Dept. of Advanced Materials Engineering, Hanlyo University, Kawangyang, 545-704, Korea

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The aim of this study is to investigate the optimum drawing parameter for BAS121 welded tubes. The BAS121 aluminium alloy tubes with 25 mm in external diameter and 1.3 mm in thickness for heat-exchangers were manufactured by high frequency induction welding with the V shaped convergence angle 6.5 ? and power input 55 kW. With increasing the reduction of area ( 13,21% ) by drawing, tensile strength was increased and elongation was decreased. With increasing the reduction of area by drawing, hardness in weld metal increased rapidly, while that of base metal increased slowly. In the specimen with the outer diameter smaller than 22 mm, hardness of weld metal was higher than that of base metal. The optimum drawing parameter of area reduction in BAS121 alloys was estimated about 13% because of the work hardening of welds.

Keywords:high frequency induction welding;clad aluminum alloy;extrusion;brazing

[References]

Keizo N, J. of Jpn. Welding Soc., 49(10), 668 (1980)
Keizo N, J. of Jpn. Inst. Light Metal, 32(7), 356 (1982)
Keizo N, J. of Jpn. Inst. Light Metal, 32(9), 465 (1982)
Keizo N, J. of Jpn. Inst. Light Metal, 33(4), 204 (1983)
Kang SS, J. of Kor. Welding Soc., 15(2), 19 (1997)
Martin DC, Bull. Ser. Welding Res. Counc., 160, 1 (1972)
Kim CM, Kim YS, J. of Kor. Welding Soc., 19(3), 4 (2001)
Gook JS, Kim NC, Song JK, Jeon DT, J. of Kor. Welding Soc., 22(4), 56 (2004)
Broek D, Eng. Fracture Mechanics, 1(10), 55 (1973)

[Referenced By]

[1] Keizo N, J. of Jpn. Welding Soc., 49(10), 668 (1980)

[2] Keizo N, J. of Jpn. Inst. Light Metal, 32(7), 356 (1982)

[3] Keizo N, J. of Jpn. Inst. Light Metal, 32(9), 465 (1982)

[4] Keizo N, J. of Jpn. Inst. Light Metal, 33(4), 204 (1983)

[5] Kang SS, J. of Kor. Welding Soc., 15(2), 19 (1997)

[6] Martin DC, Bull. Ser. Welding Res. Counc., 160, 1 (1972)

[7] Kim CM, Kim YS, J. of Kor. Welding Soc., 19(3), 4 (2001)

[8] Gook JS, Kim NC, Song JK, Jeon DT, J. of Kor. Welding Soc., 22(4), 56 (2004)

[9] Broek D, Eng. Fracture Mechanics, 1(10), 55 (1973)