ICALEO 2007 Paper #P522 (Laser Pressure Welding of Zn-Coated Steel and Pure Aluminum)
Laser Pressure Welding of Zn-Coated Steel and Pure Aluminum
Authors:
Koji Nishimoto, Anan National College of Technology; Anan, Tokushima Japan
Yoshihiro Okumoto, Anan National College of Technology; Anan-Shi, Tokushima Japan
Tomoki Harano, Anan National College of Technology; Anan-Shi, Tokushima Japan
Hiroo Fujii, Anan National College of Technology; Anan-Shi, Tokushima Japan
Ken Atagi, Anan National College of Technology; Anan-Shi, Tokushima Japan
Seiji Katayama, Osaka University; Osaka Japan
Presented at ICALEO 2007
Recently, combinations of dissimilar metals are desired in industrial fields such as transportation, chemical, po...$28.00
ICALEO 2007 Paper #P523 (Laser Surface Melting of Tool Steels H13, O1 and D6)
Laser Surface Melting of Tool Steels H13, O1 and D6
Authors:
C.T. Kwok, University of Macau; Macau Peoples Republic of China
H.C. Man, Hong Kong Polytechnic University; Kowloon Hong Kong
F.T. Cheng, The Hong Kong Polytechnic University; kowloon Hong Kong
Presented at ICALEO 2007
The surfaces of three hot / cold working steels (WSs),H13, O1 and D6, were laser surface melted by a CW 2.5-kW Nd:YAG laser at a power density of 71.9 W/mm2. Their microstructures were investigated by optical microscopy, SEM and X-ray diffractometry and their corrosion behavior in 3.5 wt% NaCl solution at 25oC was studied by potentiodynamic polarization technique. After LSM, the ferritic matrix...$28.00
ICALEO 2007 Paper #P526 (Modelling of the Impact of Melt Surface Dynamics on a Photodiode Monitoring Signal in Laser Welding)
Modelling of the Impact of Melt Surface Dynamics on a Photodiode Monitoring Signal in Laser Welding
Authors:
Peter Norman, Luleå University of Technology; Luleå Sweden
Alexander F.H. Kaplan, Luleå University of Technology; Luleå Sweden
Hans Engström, Luleå University of Technology; Luleå Sweden
Presented at ICALEO 2007
Today merely a few monitoring systems for in-process detection of laser welding defects are commercially available. Despite a trend towards cameras, the industrially most powerful concept is still a photodiode with optical filter, measuring thermal emissions from the melt surface and from the plasma or laser beam reflections. The monitoring rule f...$28.00
ICALEO 2007 Paper #P527 (Behaviour of Basalt under Shock-wave Induced by Laser: Application to Planetary Hypervelocity Impact Effect)
Behaviour of Basalt under Shock-wave Induced by Laser: Application to Planetary Hypervelocity Impact Effect
Authors:
Jerome Gattacceca, CNRS/CEREGE; Université Aix-Marseille 3 France
Laurent Berthe, CNRS/ LALP; Arcueil France
Natalia Bezaeva, CNRS/CEREGE; Université Aix-Marseille 3 France
Michel Boustie, CNRS/LCD; ENSMA France
Pierre Rochette, CEREGE; Université Aix-Marseille 3 France
Thibaut de Rességuier, Laboratoire de Combustion et de Détonique; Cedex France
Presented at ICALEO 2007
Hypervelocity impacts may play a crucial role in the magnetic records of many extraterrestrial bodies (asteroids, Mars, the Moon...). The und...$28.00
ICALEO 2007 Paper #P528 (Dimensional and Metallurgical Characterization of Free-Formed Colmonoy 227-F Samples Obtained by Laser Radiation)
Dimensional and Metallurgical Characterization of Free-Formed Colmonoy 227-F Samples Obtained by Laser Radiation
Authors:
Andrea Angelastro, Politecnico Di Bari; Bari Italy
Antonio Domenico Ludovico, Politecnico Di Bari; Bari Italy
Giuseppe Casalino, Politecnico Di Bari; Bari Italy
Sabina Luisa Campanelli, Politecnico Di Bari; Bari Italy
Presented at ICALEO 2007
Direct Laser Metal Deposition (DLMD) and Selective Laser Sintering (SLS) are actually the most growing techniques in the group of Material Accretion Manufacturing (MAM) processes because of the possibility to fabricate and to repair a wide range of metal components with a complex geometry, starting...$28.00
ICALEO 2007 Paper #P530 (Laser Rapid Manufacturing at the Raja Ramanna Centre for Advanced Technology, India)
Laser Rapid Manufacturing at the Raja Ramanna Centre for Advanced Technology, India
Authors:
Ashish Kumar Nath, Indian Institute of Technology; Kharagpur India
Christ Prakash Paul, University of Waterloo; Waterloo ON Canada
P Ganesh, Raja Ramanna Centre for Advanced Technology; Indore India
Pankaj Bhargava, Raja Ramanna Centre for Advanced Technology; Indore India
T Raghu, Raja Ramanna Centre for Advanced Technology; Indore India
Presented at ICALEO 2007
We have indigenously developed high power transverse flow CW CO2 lasers upto 15 kW at the Raja Ramanna Centre for Advanced Technology (RRCAT). These lasers have been integrated with 3-axis & 5...$28.00
ICALEO 2007 Paper #P532 (Diamond Reinforced Metal Coating using Automated Laser Fabrication)
Diamond Reinforced Metal Coating using Automated Laser Fabrication
Authors:
Mehrdad Iravani-Tabrizipour, University of Waterloo; Waterloo ON Canada
Christ P. Paul, University of Waterloo; Waterloo ON Canada
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Stephen Corbin, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2007
Automated Laser Fabrication is an emerging advanced technology which penetrating in different aspects of manufacturing. This paper reports the automation laser fabrication of low-cost diamond tools. The engineered composition of the diamond and Cu-Sn-Ti are selected to address the issues, like- dissociation of di...$28.00
ICALEO 2007 Paper #P534 (Induction Heating Unit Equipped with Closed-loop PID Controller; Versatile Tool in Laser Cladding)
Induction Heating Unit Equipped with Closed-loop PID Controller; Versatile Tool in Laser Cladding
Authors:
Jari Tuominen, Tampere University of Technology; Tampere Finland
Petri Vuoristo, Tampere University of Technology; Tampere Finland
Presented at ICALEO 2007
Mobile induction heating unit equipped with closed-loop PID controller is versatile tool in laser materials processing. In this study well-controllable heat energy induced by magnetic field was utilized to overcome the commonly known problems related to laser cladding. Productivity (kg/h, m2/h) was significantly increased by heating the substrate before and during the cladding or alternatively by heating the clad material b...$28.00
ICALEO 2007 Paper #P536 (Rapid Fabrication of Electrical Discharge Machining (EDM) Electrodes by Laser Surface Cladding)
Rapid Fabrication of Electrical Discharge Machining (EDM) Electrodes by Laser Surface Cladding
Authors:
Fernando Lusquiños, Universidade de Vigo; Vigo Spain
Antonio Riveiro, Universidade de Vigo; Vigo Spain
Rafael Comesaña, Universidade de Vigo; Vigo Spain
Félix Quintero, Universidade de Vigo; Vigo Spain
J. del Val, Universidade de Vigo; Vigo Spain
Juan Pou, Universidade de Vigo; Vigo Spain
Presented at ICALEO 2007
Under the term rapid prototyping(RP), different production techniques dedicated to the speedy fabrication of sample parts for demonstrations, evaluation or testing can be included. The rapid prototyping based o...$28.00
ICALEO 2007 Paper #P537 (Shear Testing of Laser Spotwelds)
Shear Testing of Laser Spotwelds
Authors:
Gerald Knorovsky, Sandia National Laboratories; Albuquerque NM USA
Jerome Norris, Sandia National Laboratories; Albuquerque NM USA
Matthew Perricone, R.J. Lee Group; Monroeville PA USA
Presented at ICALEO 2007
A shear test was used to investigate the effect of shielding gas (Argon, Nitrogen and none) on the properties of laser spot welds in Fe-28Ni-17Co alloy (Kovar). The load vs. displacement curves obtained, while superficially resembling those of a standard tensile test, were quite non-reproducible, and obscured the differences due to process conditions. Fractographic examination of the samples and analysis of the testing ...$28.00