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Keywords: melting
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2013, 135(2): 021007.
Paper No: MANU-12-1004
Published Online: March 22, 2013
.... The relationship between the results, including the melting depth, ablation depth, and maximum temperature in both the liquid and solid, and the effects from the laser fluence and separation time between two pulses are investigated. The new results will be compared with that from the Clausius–Clapeyron equation...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. February 2012, 134(1): 011010.
Published Online: January 13, 2012
..., a considerably high temperature must have been reached in the regions near the punched hole. The aluminum in this region was assumed to have melted and resolidified. These assumptions were affirmed by the following observations. Microscopic-size precipitates present in the unaffected base metal microstructure...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. February 2012, 134(1): 011001.
Published Online: January 11, 2012
...P. S. Wei; C. L. Lin; H. J. Liu; C. N. Ting This study presents a numerical scenario for the effect of thermocapillary convection on the transient, two-dimensional molten pool shape during welding or melting. Tracing the melting process is necessary to achieve a better and more complete...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Manuf. Sci. Eng. February 2012, 134(1): 014501.
Published Online: January 11, 2012
.... Particularly at the weldline region, locally different orientation is observed near the part surface, which is the result of fountain flow at the melt front. Also the effect of mold temperature on the flake orientation is presented. 03 04 2011 30 09 2011 11 01 2012 11 01 2012...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2010, 132(3): 031001.
Published Online: April 28, 2010
... element methods, is used to determine the melting isotherms due to heat inputs on overlapping crater profiles. Then, a hemispherical-capped crater profile is estimated by applying a recast plasma flushing efficiency to the amount of molten material bounded by the melting isotherm. Finally, the recast...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2009, 131(5): 051004.
Published Online: September 4, 2009
.... The cooling rates in the process and the spatial and temporal temperature profiles are numerically examined. The simulation results in conjunction with melting and crystallization kinetics of PLLA are used to understand the effect on sample crystallinity. The effects of laser fluence and annealing conditions...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2009, 131(4): 041006.
Published Online: July 8, 2009
.... However, some craters would still exist on the machined surface, which limits the further improvement of the surface quality of the machined workpieces. One possible solution is to apply external forces to workpieces by using high-frequency vibrations to smooth craters during melting and solidification...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2009, 131(3): 031013.
Published Online: May 28, 2009
... processing of high surface integrity for components, with improved physical and chemical properties and modified surface topography. 05 10 2006 17 04 2009 28 05 2009 corrosion resistance creep fatigue ion beam assisted deposition melting shock waves solidification wear...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Manuf. Sci. Eng. April 2009, 131(2): 024501.
Published Online: March 17, 2009
...Seungwon Shin; Haseung Chung In this paper, we present a one-dimensional (1D) melting, evaporating, and resolidifying model describing the interaction of a scanning laser beam with a metal surface wherein the continuous and stepwise heat flux is applied. One set of 1D conduction equations, which...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. December 2007, 129(6): 991–999.
Published Online: June 9, 2007
... process, refereed to as double-electrode GMAW or DE-GMAW, thus has been developed to make it possible to increase the melting current while the base metal current can still be controlled at a desired level. This fundamental change provides an effective method to allow manufacturers to use high melting...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. June 2007, 129(3): 575–582.
Published Online: December 18, 2006
...Tiebing Chen; Yuwen Zhang A three-dimensional model of selective laser sintering of a two-component loose metal powder layer on top of previously sintered layers by a single-line laser scanning is presented. A temperature-transforming model is employed to model melting and resolidification...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. May 2004, 126(2): 237–246.
Published Online: July 8, 2004
... to extrude the melt is thus reduced by the amount F s ; (5) the new value of F is consequently used to calculate the real average velocity of the melt (see Fig. 6 (b)). The slip condition is taken into account in calculating the melt velocity. The algorithm applied for this case...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. May 2002, 124(2): 456–461.
Published Online: April 29, 2002
... differing scales that occur in the combustion and melt spaces. For example, the temperature in the aluminum melt is significantly cooler and changes less dramatically than the combustion temperatures. By interactively narrowing the color map range to correspond to the melt temperatures, the user can more...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. November 2001, 123(4): 632–638.
Published Online: May 1, 2000
... Manufacturing (SDM) process 11 12 . A welding-related deposition process used within SDM is termed microcasting and it involves depositing each layer as a sequence of discrete molten metal droplets. Droplets are formed by melting feedstock wire in a conventional gas metal arc welding torch. The droplets free...
Topics: Drops, Stress
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. February 2001, 123(1): 38–44.
Published Online: December 1, 1999
...Franz-Josef Kahlen; Aravinda Kar This paper presents a set of process parameter selection rules to deposit a good metal part. A CO 2 laser is used to melt metal powder to achieve layer by layer deposition for fabricating three-dimensional parts. Dimensionless numbers characterizing this powder...