Abstract
A Nd:YAG laser robot cladding system, which combines a 6-axis robot, powder supply equipment and special powder delivery nozzle has been used for a powder cladding process. The Stellite 6 + WC mixed powder were clad on to mild carbon steel plate (SM400B). The depth of penetration, cracking behaviour, microstructure, Vickers hardness and wear resistance were investigated. Vickers hardness and wear resistance were found to increase with WC volume fraction in the range of 0–90%. The microstructures of clad layer can be divided into hypoeutectic (0–40%WC) and hypereutectic (50–100%WC) regions.
References
1.
Hirose
A.
and
Kobayashi
F. K.
ISIJ International , 1995 , 35 , (6 ), 757 –763 .
2.
Brandt
M.
,
Scott
D. A.
,
Emms
S. B.
and
Yellup
J. M.
J. Laser Appl , 1997 , 9 , (2 ), 67 –75 .
3.
Kutsuna
M.
: Rev. Laser Eng ., 1994 , 22 , (9 ), 32 –47 .
4.
Kutsuna
M.
: Weld. Tech , 2002 , 50 , (5 ), 127 –135 .
5.
Kutsuna
M.
: Rev. Laser Eng ., 2000 , 28 , (11 ), 736 –744 .
6.
Kutsuna
M.
: Weld. Tech , 1995 , 43 , (9 ), 70 –77 .
7.
Zhong
M. L.
,
Yao
K. F.
and
Liu
W. J.
J. Laser Appl ., 2001 , 13 , (6 ), 247 –251 .
8.
Wu
W. T.
and
Wu
L.-T.
Metall Mater. Trans. A , 1996 , 27A , 3639 –3648 .
9.
Zhong
M. L.
: Proc. 22nd ICALEO Conf. on ‘Laser materials processing’ , Vol. 22 , 189 –196 ; 2003 , Orlando, FL , Laser Institute of America .
10.
Steen
W. M.
: Proc. ECLAT ‘88 on ‘Laser treatment of materials’ , Bad-Nauheim , Germany , October 13-14 ; 1988 , 60 –63 .
11.
Techel
A.
,
Luft
A.
,
Muller
A.
and
Nowotny
S.
Opt. Quantum Electron , 1995 , 27 , 1313 –1318 .
12.
Lugscheider
E.
and
Bolerder
H.
Proc. ECLAT’94 on ‘Laser treatment of materials’ , Bremen—Vegesack, Germany , September 26-27 ; 1994 .