Abstract
Two technical approaches for keyhole closure were conducted. Workpieces of aluminium alloy 2219 were welded using variable polarity vertical up plasma arc welding technology. Effects of welding process parameters on keyhole closure were analysed. Appropriate technical criteria for keyhole closure in the welding of aluminium alloys (3 or 6 mm in thickness) via the variable polarity vertical up plasma arc welding technique were obtained. Experimental simulation of girth welding (overlap welding) was conducted using the appropriate process parameters for the keyhole closure stage of plate butt welding, and the feasibility of circumferential welding was verified. Accordingly, girth welding of the external tank of a carrier rocket was achieved using the appropriate parameters for the keyhole closure technique. In addition, the metallurgical process and mechanical performance for the single pass and overlap welds were analysed and compared.
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References
1.
Liu
Z. H.
,
Zhao
B.
and
Zhao
Q.
Missiles Space Veh ., 2002 , 5 , 63 –68 .
2.
Gerlich
A.
,
Su
P.
and
North
T. H.
Sci. Technol. Weld. Joining , 2005 , 10 , 647 –652 .
3.
Kimura
M.
,
Nakamura
S.
,
Kusaka
M.
,
Seo
K.
and
Fuji
A.
Sci Technol. Weld. Joining , 2005 , 10 , 666 –672 .
4.
Tong
H.
,
Ueyama
T.
,
Tanaka
M.
and
Ushio
M.
Sci. Technol Weld. Joining , 2005 , 10 , 695 –700 .
5.
Yan
J.
,
Sutton
M. A.
and
Reynolds
A. P.
Sci. Technol. Weld. Joining , 2005 , 10 , 725 –736 .
6.
Kimura
M.
,
Choji
M.
,
Kusaka
M.
,
Seo
K.
and
Fuji
A.
Sci Technol. Weld. Joining , 2005 , 10 , 406 –412 .
7.
Cantin
G. M. D.
,
David
S. A.
,
Thomas
W. M.
,
Lara-curzio
E.
and
Babu
S. S.
Sci. Technol. Weld. Joining , 2005 , 10 , 268 –280 .
8.
Kimura
M.
,
Kusaka
M.
,
Seo
K.
and
Fuji
A.
Sci. Technol. Weld. Joining , 2005 , 10 , 378 –383 .
9.
Wang
H. Y.
,
Chen
Q.
,
Wang
Y. W.
,
Sun
Z. G.
and
Sun
J. W.
J. Tsinghua Univ. (Sci. Technol .), 2001 , 41 , 1 –4 .
10.
Zhang
Y. M.
and
Zhang
S. B.
Weld. J ., 1999 , 78 , 53 –58 .
11.
Hsu
Y. F.
and
Rubinsky
B.
Int. J. Heat Mass Transfer , 1988 , 31 , 1409 –1421 .
12.
Yang
Z. H.
and
Sun
X. C.
Electr. Weld. Mach ., 2003 , 33 , 1 –5 .
13.
Dong
C. L.
,
Wu
L.
and
Shao
Y. C.
Chin. Mech. Eng ., 2000 , 11 , 577 –581 .
14.
Shen
J. H.
,
Li
K. Q.
and
Liu
Z. H.
Aerosp. Mater. Technol ., 1997 , 27 , 40 –42 .
15.
Li
Z. N.
,
Wang
L.
,
Xie
X. K.
and
Li
T. Y.
2004 , 45 –53 .
16.
Lei
Y. C.
and
Zheng
H. J.
J. Jiangsu Univ. Sci. Technol ., 2000 , 21 , 61 –64 .
17.
Woodward
H.
: Weld. J , 1996 , 75 , 35 –40 .
18.
Nunes
A. C.
,
Bayless
E. O.
,
Jones
C. S.
,
Munafo
P. M.
,
Biddle
A. P.
and
Wilson
W. A.
Weld. J ., 1984 , 63 , 27 –35 .
19.
Craig
E.
: Weld. J , 1988 , 67 , 19 –25 .
20.
Chen
K. X.
,
Li
H. Q.
and
Li
C. X.
Trans. Chin. Weld. Inst ., 2004 , 25 , 124 –128 .
21.
Tomsic
M.
and
Barhorst
S.
Weld. J ., 1984 , 63 , 25 –32 .
22.
Liu
Z. H.
,
Wang
Q. L.
and
Zheng
B.
J. Mater. Process. Technol ., 2001 , 115 , 373 –379 .
23.
Liu
Z. H.
,
Wang
Q. L.
and
Zhu
J. Q.
Chin. J. Mech. Eng. (Engl. Edn) , 2001 , 14 , 62 –66 .
24.
Zheng
B.
,
Wang
Q. L.
and
Kovacevic
R.
Proc. Inst. Mech. Eng. B, J. Eng. Manuf ., 2000 , 214 , 393 –400 .
25.
Zheng
B.
and
Wang
Q. L.
Trans. Chin. Weld. Inst ., 1993 , 14 , 164 –171 .
26.
Zheng
B.
,
Wang
Q. L.
,
Liu
D.
and
Wu
Z. S.
Weld. Joining , 1994 , 250 , 18 –20 .
27.
Zheng
B.
,
Wang
Q. L.
and
Wang
T.
Trans. Chin. Weld. Inst ., 1995 , 16 , 1 –8 .
28.
Zheng
B.
,
Wang
H. J.
,
Wang
Q. L.
and
Kovacevic
R.
Weld. J ., 2000 , 79 , 363 –371 .
29.
Zheng
B.
,
Wang
Q. L.
and
Kovacevic
R.
Proc. Inst. Mech. Eng. B, J. Eng. Manuf ., 1999 , 213 , 69 –76 .
30.
Zheng
B.
,
Wang
H. J.
and
Wang
Q. L.
1997 , American Welding Society, 56 –57 .
31.
Wang
H. J.
,
Kovacevic
R.
,
Zheng
B.
and
Wang
Q. L.
Proc. Inst. Mech. Eng. B, J. Eng. Manuf ., 2000 , 214 , 495 –504 .
32.
Wang
H. J.
and
Kovacevic
R.
Proc. Inst. Mech. Eng. B, J. Eng. Manuf ., 2002 , 216 , 1265 –1276 .
33.
Wang
H. J.
and
Kovacevic
R.
Proc. Inst. Mech. Eng. B, J. Eng. Manuf ., 2002 , 216 , 1355 –1366 .
34.
Wang
H. J.
,
Wang
Q. L.
and
Liu
Z. H.
Mater. Sci. Technol ., 1998 , 6 , 92 –96 .
35.
Lei
Y. C.
: J. Jiangsu Univ. Sci. Technol ., 1994 , 15 , 62 –67 .
36.
Lei
Y. C.
: Weld. Technol ., 1994 , 23 , 12 –14 .
37.
Lei
Y. C.
: J. Jiangsu Univ. Sci. Technol ., 1996 , 17 , 26 –29 .
38.
Chen
K. X.
,
Li
H. Q.
and
Li
C. X.
Chin. Weld ., 2003 , 12 , 168 –170 .
39.
Chen
K. X.
,
Li
H. Q.
and
Li
C. X.
J. Gansu Sci ., 2003 , 15 , 78 –81 .
40.
Chen
K. X.
: J. Gansu Univ. Technol ., 1999 , 25 , 11 –13 .
41.
Wang
Y. S.
,
Chen
K. X.
,
Cai
H. N.
and
Xue
X. H.
J. Xi'an Jiaotong Univ ., 1998 , 32 , 87 –95 .
42.
Chen
K. X.
,
Li
H. Q.
,
Li
C. X.
and
Hao
L. J.
Weld. Joining , 2002 , 353 , 26 –29 .
43.
Wang
Y. S.
,
Cai
H. N.
,
Xue
X. H.
and
Chen
K. X.
Weld. Technol ., 1999 , 28 , 6 –7 .
44.
Wang
Y. S.
,
Cai
H. N.
,
Xue
X. H.
and
Chen
K. X.
Electr. Weld. Mach ., 1997 , 27 , 23 –26 .
45.
Lv
Y. H.
,
Chen
S. J.
,
Han
Y. Q.
and
Yin
S. Y.
Weld. Joining , 2003 , 360 , 27 –29 .
46.
Chen
H. M.
,
Xiong
Z. Y.
,
Yu
H.
and
Yi
Z. Q.
J. Nanchang Inst. Aeronaut. Technol ., 1997 , 11 , 38 –43 .
47.
Pang
Q.
,
Pang
T.
,
Mcclure
J. C.
and
Nunes
A. C.
J. Eng. Ind. (Trans. ASME) , 1994 , 116 , 463 –466 .
48.
Woodward
N. J.
,
Richardson
I. M.
and
Thomas
A.
Sci. Technol. Weld. Joining , 2000 , 5 , 21 –25 .
49.
Zhang
Y.
,
Ganguly
S.
,
Edwards
L.
and
Fitzpatrick
M. E.
Acta Mater ., 2004 , 52 , 5225 –5232 .
50.
Nunes
A. C.
,
Zaidi
A. A.
,
Ravi
T. S.
and
Talia
J. E.
High Temp. Mater. Process ., 1998 , 17 , 313 –318 .
51.
Martinez
L. F.
,
Matlock
C.
,
Marques
R. E.
,
Mcclure
J. C.
and
Nunes
A. C.
Weld. J ., 1994 , 73 , 51 –55 .
52.
Yang
C. L.
and
Lin
S. B.
124 ; 2003 , Harbin, People's Republic of China, Harbin Institute of Technology Press.
53.
Wu
G.
,
Yao
L. J.
and
Li
Z. X.
161 –162 ; 1994 , Beijing, Science Press.
54.
Fuerschbach
P. W.
and
Knorovsky
G. A.
Weld. J ., 1991 , 70 , 287 –297 .
55.
Zhang
W. Y.
: in ‘Physical metallurgy of welding process’, 1st edn, 116 –237 ; 1997 , Beijing, China Machine Press.
56.
Cui
Z. Q.
and
Liu
B. X.
63 –87 ; 2000 , Harbin, People's Republic of China, Harbin Institute of Technology Press.
57.
Chen
G. Z.
,
Xiao
K. Z.
and
Jiang
B. J.
157 –169 ; 1996 , Beijing, China Machine Press.
58.
Liu
C. F.
: Aerosp. Manuf. Technol ., 2002 , 8 , 4 –9 .
59.
Cui
Y. X.
and
Wang
C. L.
40 –41 ; 1998 , Harbin, People's Republic of China, Harbin Institute of Technology Press.