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E-raamat: Hybrid Laser-Arc Welding

Edited by (Technical University of Denmark, Denmark)
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Hybrid laser-arc welding (HLAW) is a combination of laser welding with arc welding that overcomes many of the shortfalls of both processes. This important book gives a comprehensive account of hybrid laser-arc welding technology and applications.

The first part of the book reviews the characteristics of the process, including the properties of joints produced by hybrid laser-arc welding and ways of assessing weld quality. Part two discusses applications of the process to such metals as magnesium alloys, aluminium and steel as well as the use of hybrid laser-arc welding in such sectors as ship building and the automotive industry.

With its distinguished editor and international team of contributors, Hybrid laser-arc welding is a valuable source of reference for all those using this important welding technology.

Arvustused

"a valuable source of reference for all those using this important welding technology." --Welding and Cutting

Contributor contact details ix
Preface xi
Part I Characteristics of hybrid laser-arc welding
1(140)
1 Advantages and disadvantages of arc and laser welding
3(25)
E. W. Reutzel
1.1 Introduction
3(1)
1.2 Arc welding
3(12)
1.3 Laser welding
15(10)
1.4 Acknowledgments
25(1)
1.5 References
25(3)
2 Fundamentals of hybrid laser-arc welding
28(19)
S. Katayama
2.1 Introduction
28(1)
2.2 Plasma characteristics including interaction between laser beam and arc
29(5)
2.3 Dynamic behavior
34(3)
2.4 Melt dynamics and melt pool stability
37(4)
2.5 Formation and prevention mechanism of porosity
41(3)
2.6 References
44(3)
3 Heat sources of hybrid laser-arc welding processes
47(38)
A. Mahrle
E. Beyer
3.1 Introduction
47(1)
3.2 Laser beam heat sources
48(11)
3.3 Arc heat sources
59(9)
3.4 Combinations of laser beams and arcs
68(9)
3.5 Future trends
77(1)
3.6 References
78(7)
4 Effect of shielding gas on hybrid laser-arc welding
85(21)
M. Gao
X. Y. Zeng
4.1 Introduction
85(1)
4.2 Common types and physical properties of shielding gases
86(6)
4.3 Effects of shielding gas in hybrid welding
92(8)
4.4 Effects of shielding gas on mechanical properties of the hybrid weld
100(3)
4.5 Conclusions and sources of further information and advice
103(1)
4.6 References
103(3)
5 Properties of joints produced by hybrid laser-arc welding
106(21)
V. Kujanpaa
5.1 Introduction
106(1)
5.2 Microstructure of hybrid laser-arc welds
106(6)
5.3 Hardness
112(4)
5.4 Strength
116(2)
5.5 Toughness
118(2)
5.6 Fatigue properties
120(3)
5.7 Corrosion properties
123(1)
5.8 References
124(3)
6 Quality control and assessing weld quality in hybrid laser-arc welding
127(14)
J. K. Kristensen
6.1 Introduction
127(1)
6.2 Weldability of typical structural materials
127(7)
6.3 Weld quality
134(2)
6.4 Assessment of weld properties
136(2)
6.5 Conclusions
138(1)
6.6 Acknowledgements
139(1)
6.7 References
139(2)
Part II Applications of hybrid laser-arc welding
141(156)
7 Hybrid welding of magnesium alloys
143(35)
L. Liu
7.1 Introduction
143(1)
7.2 Weldability of magnesium alloys
144(1)
7.3 Low-power laser-arc hybrid welding process
145(17)
7.4 Numerical simulation
162(5)
7.5 Infrared temperature measurement
167(1)
7.6 Spectral diagnosis
168(4)
7.7 Interaction between laser beam and arc plasma
172(1)
7.8 Practical application
173(2)
7.9 Conclusions and future trends
175(1)
7.10 References
175(3)
8 Shipbuilding applications of hybrid laser-arc welding
178(14)
J. K. Kristensen
8.1 Introduction
178(1)
8.2 The approval of laser-based welding in shipbuilding
179(5)
8.3 Industrial examples
184(6)
8.4 Conclusions
190(1)
8.5 References
191(1)
9 Industrial robotic application of laser-hybrid and laser-hybrid-tandem welding
192(24)
H. Staufer
9.1 Introduction
192(1)
9.2 Laser-hybrid process for industrial applications
193(2)
9.3 Applications and case studies in the automotive industry
195(4)
9.4 Applications in shipbuilding
199(5)
9.5 Synergies by LaserHybrid
204(1)
9.6 The laser-hybrid-tandem welding process in the automotive industry
205(2)
9.7 Application of LaserTandem welding in the pipeline industry
207(2)
9.8 LaserTandem welding system
209(2)
9.9 Laser-hybrid welding with three arcs: principles of laser-hybrid and laser-hybrid-tandem welding
211(3)
9.10 Conclusions
214(1)
9.11 References
215(1)
10 Hybrid laser-arc welding of aluminium
216(54)
C. Thomy
10.1 Introduction
216(1)
10.2 Aluminium and its alloys
217(2)
10.3 Fusion welding of aluminium alloys
219(9)
10.4 Hybrid laser-arc welding processes for aluminium alloys
228(17)
10.5 Properties of hybrid laser-arc welds
245(13)
10.6 Applications
258(3)
10.7 Future trends
261(1)
10.8 References
262(8)
11 Hybrid laser-arc welding of dissimilar metals
270(27)
C. Thomy
11.1 Introduction
270(1)
11.2 Specific aspects of and state-of-the-art in joining of dissimilar metals
271(6)
11.3 Basic features of laser MIG hybrid welding for dissimilar metals
277(1)
11.4 Process and joint properties
278(10)
11.5 Application potentials
288(3)
11.6 Future trends
291(1)
11.7 References
291(6)
Part III Hybrid laser-arc welding of steel
297(15)
12 Hybrid laser-arc welding of steel
299(13)
S. Katayama
12.1 Introduction
299(1)
12.2 Hybrid laser-arc welding of steel and high tensile strength steel
300(7)
12.3 Hybrid laser-arc welding of Zn-coated steel
307(2)
12.4 Hybrid laser-arc welding of stainless steel
309(1)
12.5 References
309(3)
Index 312
Professor Flemming Ove Olsen works in the Department of Manufacturing Engineering and Management at the Technical University of Denmark. He is internationally known for his research in the field of hybrid laser-arc welding.
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