Hot Wire-Assisted Gas Metal Arc Welding of Ni-Based Hardfacing

被引:5
作者
Guenther, K. [1 ]
Bergmann, J. P. [1 ]
Zhang, C. [2 ]
Rosenberger, M. [2 ]
Notni, G. [2 ]
机构
[1] Ilmenau Univ Technol, Dept Prod Technol, Ilmenau, Germany
[2] Ilmenau Univ Technol, Dept Qual Insurance & Image Proc, Ilmenau, Germany
关键词
Hot Wire; GMAW; Hardfacing; Fused Tungsten Carbides; TUNGSTEN CARBIDES; BEHAVIOR;
D O I
10.29391/2018.97.009
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
For the deposition of Ni-based hardfacings reinforced with fused tungsten carbides (FTCs), a variety of manufacturing processes are industrially applied. Of these processes, plasma transferred arc welding (PTAW) and gas metal arc welding (GMAW) are most widely used. The primary advantages of GMAW are the controlled feeding of the filler material in terms of the flux cored wire, the uncomplicated use on site, and the high mechanical degree. However, GMAW is known to have a negative impact on the metallurgical properties of FTCs for several reasons; for example, FTCs are directly exposed to the high arc temperatures, promoting dissolution mechanisms, and increasing deposition rates are accompanied by a rising heat input. A new GMAW strategy was developed with the objective of separating the material and energy input. The application of an additional hot wire (HW-GMAW) was observed to remove heat from the melt pool. As a result, low dilution rates of similar to 5% were obtained for deposition rates of similar to 12 kg/h, approaching PTAW quality. Additionally, the modified process characteristics have an immediate impact on the characteristics of FTCs.
引用
收藏
页码:99S / 107S
页数:9
相关论文
共 21 条
[1]   Laser cladding of tungsten carbides (Spherotene®) hardfacing alloys for the mining and mineral industry [J].
Amado, J. M. ;
Tobar, M. J. ;
Alvarez, J. C. ;
Lamas, J. ;
Yanez, A. .
APPLIED SURFACE SCIENCE, 2009, 255 (10) :5553-5556
[2]  
[Anonymous], 2017, ABRASIONSVERSCHLEISS, DOI [10.1179/1362171813Y.00, DOI 10.1179/1362171813Y.00]
[3]   Influence of welding parameters on microstructure and wear behaviour of a typical NiCrBSi hardfacing alloy reinforced with tungsten carbide [J].
Badisch, E. ;
Kirchagassner, M. .
SURFACE & COATINGS TECHNOLOGY, 2008, 202 (24) :6016-6022
[4]  
Berns H., 1998, Hartlegierungen und Hartverbundwerkstoffe: Gefuge, Eigenschaften, Bearbeitung, Anwendung
[5]  
Bock A., 2005, THESIS TECHNICAL U C
[6]  
Choi L., 2011, P CAN WELD ASS C ALB, DOI [10.1016/j.jmatprotec, DOI 10.1016/J.JMATPROTEC]
[7]  
Fahrenwald H. J., 2003, PRAXISWISSEN SCHWEIS
[8]  
Gao S., 2013, Q J JAPAN WELDING SO, V31, P57, DOI [10.2207/qjjws.31.57s, DOI 10.2207/QJJWS.31.57S]
[9]   Influence of processing conditions on the degradation kinetics of fused tungsten carbides in hardfacing [J].
Guenther, Karsten ;
Liefeith, Jens ;
Henckell, Philipp ;
Ali, Yarop ;
Bergmann, Jean Pierre .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2018, 70 :224-231
[10]   Non-wetting behaviour of tungsten carbide powders in nickel weld pool: new loss mechanism in GMAW overlays [J].
Guest, S. D. ;
Chapuis, J. ;
Wood, G. ;
Mendez, P. F. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2014, 19 (02) :133-141