ICALEO 2009 Paper #1802 (Influence of Oxygen on Weld Geometry in Fibre Laser Welding)
Influence of Oxygen on Weld Geometry in Fibre Laser Welding
Authors:
Lin Zhao, National Institute for Materials Science; Tsukuba Japan
Susumu Tsukamoto, National Institute for Materials Science; Tsukuba Japan
Goro Arakane, National Institute for Materials Science; Tsukuba Japan
Tomohiro Sugino, Ihi Corp.; Yokohama Japan
Presented at ICALEO 2009
Oxygen can significantly increase the penetration depth in arc welding. It is caused by change in the Marangoni flow direction from outward to inward with increasing the oxygen content. Increase in the penetration depth by oxygen was also reported in laser welding by some researchers, but the mechanism is still uncl...$28.00
ICALEO 2009 Paper #1803 (Short Focal Length Scanner,Fiber Laser Welding Of Stainless Steel Sheets And Tubular Products)
Short Focal Length Scanner,Fiber Laser Welding Of Stainless Steel Sheets And Tubular Products
Authors:
Mikko Vänskä, Lappeenranta University of Technology / Outokumpu Stainless Tubular Products Oy Ab; Pietarsaari Finland
Veli Kujanpää, Lappeenranta University of Technology / VTT Industrial Systems; Lappeenranta Finland
Elin Westin, Outokumpu Stainless Ab, Avesta Research Center; Avesta Sweden
Terho Torvinen, Outokumpu Stainless Tubular Products Oy Ab; Pietarsaari Finland
Presented at ICALEO 2009
The fiber laser has generally better beam quality than the CO2-laser. This would normally be a positive effect, but also it causes limitations. Welding of join...$28.00
ICALEO 2009 Paper #1804 (High-power Fiber Laser Butt Welding of Thick High-strength Steel Plate using Sensing System with Hot Wire)
High-power Fiber Laser Butt Welding of Thick High-strength Steel Plate using Sensing System with Hot Wire
Authors:
Terumasa Onishi, JWRI; Ibaraki City, Osaka Japan
Masami Mizutani, Jwri; Ibaraki City Japan
Yousuke Kawahito, Jwri; Ibaraki City Japan
Seiji Katayama, Jwri; Ibaraki City Japan
Presented at ICALEO 2009
Welding of thick high-strength steel plates without preheating or post-heating is expected in many industries. A high-power and high-brightness fiber laser is promising as one of the desirable heat sources for high-speed and deep-penetration welding. However, such a small beam spot has a low gap tolerance for butt welding. In this study, theref...$28.00
ICALEO 2009 Paper #1805 (Prevention of Porosity by Oxygen in Partial Penetration Laser and Laser-GMA Hybrid Welding)
Prevention of Porosity by Oxygen in Partial Penetration Laser and Laser-GMA Hybrid Welding
Authors:
Susumu Tsukamoto, National Institute for Materials Science; Tsukuba, Ibaraki Japan
Lin Zhao, National Institute for Materials Science; Tsukuba Japan
Goro Arakane, National Institute for Materials Science; Tsukuba Japan
Tomohiro Sugino, Ihi Corp.; Yokohama Japan
Presented at ICALEO 2009
Prevention of the porosity has been attempted in partial penetration laser and laser/arc hybrid welding of heavy section steel plates. Bead on plate welding was carried out on 0.10C-0.30Si-1.33Mn steel (JIS SM490A) using 7 kW fibre laser and pulsed GMA. Laser power modulatio...$28.00
ICALEO 2009 Paper #1806 (Weldability of Austenitic and Dual Phase Stainless Steel on Fiber Laser Welding for Pipe Industry)
Weldability of Austenitic and Dual Phase Stainless Steel on Fiber Laser Welding for Pipe Industry
Authors:
Mok-Young Lee, RIST; Pohang South Korea
Presented at ICALEO 2009
Stainless steels were widely used for corrosive environments because they have high corrosion resistant properties. But the price of them was higher compared with carbon steel products, due to high cost of raw materials and low productivity. Laser welding has some advantages over conventional GTA welding process such as high welding speed, narrow bead width, excellent weld performance and saving of filler wire. From making stainless steel tube with laser welding, we reduce the price at the same time increase the quality. The ...$28.00
ICALEO 2009 Paper #1807 (Qualification of HLAW of HSLA-80 Under Naval Vessel Rules)
Qualification of HLAW of HSLA-80 Under Naval Vessel Rules
Authors:
Paul Blomquist, Applied Thermal Sciences, Inc.; Sanford ME USA
Carl Chretien, -; -
Erik Oller, Concurrent Technologies Corp; - USA
Brian Marx, Concurrent Technologies Corp; - USA
Presented at ICALEO 2009
Procedures have been developed for Hybrid Laser Arc Welding (HLAW) of HSLA-80 and approved by the American Bureau of Shipping (ABS) for use in the construction of naval combatant vessels built under Naval Vessel Rules (NVR). This paper discusses problems encountered and solutions generated during the development sequence, especially in achieving satisfactory Charpy V-Notch (CVN) impact pr...$28.00
ICALEO 2009 Paper #1808 (Analysis and Control of Penetration Depth Fluctuations in Single-mode Fiber Laser Welds)
Analysis and Control of Penetration Depth Fluctuations in Single-mode Fiber Laser Welds
Authors:
Yong Chae Lim, The Ohio State University; Columbus OH USA
Matt Reiter, Ohio State University; Columbus OH USA
Jungho Cho, Ohio State University; Columbus OH USA
Dave Farson, The Ohio State University; Columbus OH USA
M. Mehl, Honeywell FM&T; - USA
Presented at ICALEO 2009
Penetration depth fluctuations of single-mode fiber laser welds made with long focal length optics and the affects of sinusoidal laser power modulations were studied. It was found that the welds had a high aspect ratio and were subject to spiking defects. The magnitude of the pene...$28.00
ICALEO 2009 Paper #1809 (Microlens Fabrication with Fiber Laser Induced Thermo-Mechanical Plastic Forming Method)
Microlens Fabrication with Fiber Laser Induced Thermo-Mechanical Plastic Forming Method
Authors:
Tao Chen, Institute of Laser EngineeringBeijing University of Technology; Beijing Peoples Republic of China
Tong Wang, Institute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Ji-Min Chen, Institute of Laser EngineeringBeijing University of Technology; Beijing Peoples Republic of China
Tie-Chuan Zuo, Institute of Laser EngineeringBeijing University of Technology; Beijing Peoples Republic of China
Shi-Bing Liu, Institute of Laser Engineering,Beijing University of Technology; Beijing Peoples Republic of China$28.00
ICALEO 2009 Paper #1902 (Effects of Parameters on Surface Roughness of Samples by Selective Laser Melting)
Effects of Parameters on Surface Roughness of Samples by Selective Laser Melting
Authors:
Zemin Wang, Huazhong University of Science and Technology; Wuhan Peoples Republic of China
Guangxia Chen, Jianghan University; Wuhan, Hubei Province Peoples Republic of China
Kai Guan, Huazhong University of Science and Technology; Wuhan, Hubei Province Peoples Republic of China
Changwen Peng, Huazhong University of Science and Technology; Wuhan, Hubei Province Peoples Republic of China
Xiaoyan Zeng, Huazhong University of Science and Technology; Wuhan, Hubei Province Peoples Republic of China
Presented at ICALEO 2009
During fabrications of metal parts by...$28.00
ICALEO 2009 Paper #1903 (Effect of Substrate on Temperature Field in Selective Laser Sintering of Metal Powders)
Effect of Substrate on Temperature Field in Selective Laser Sintering of Metal Powders
Authors:
Xianfeng Shen, Institute of Machinery Manufacturing Technology; Mianyang Peoples Republic of China
Yang Wang, -; -
Jialin Yang, -; -
Presented at ICALEO 2009
Selective laser sintering (SLS) of metal powders is an attractive Rapid Prototyping and Manufacturing (RPM) technology which can be used to produce three-dimensional metal parts directly from a CAD model. In the process, the substrates are commonly used for avoiding the balling effect in powder melting and dislocation of sintered part. A three-dimensional finite element thermal model in SLS of metal powder including t...$28.00