Experimental investigation and numerical simulation on interfacial carbon diffusion of diamond tool and ferrous metals

2016 ◽  
Vol 31 (2) ◽  
pp. 307-314 ◽  
Author(s):  
Lai Zou ◽  
Ming Zhou
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Diamond Tool ◽  
Carbon Diffusion ◽  
Ferrous Metals ◽  
Interfacial Carbon

Numerical Simulation on Diffusion Wear of Diamond Tool in Cutting of Ferrous Metals

2012 ◽  
Vol 591-593 ◽  
pp. 565-568
Author(s):  
Ming Zhou ◽  
Lai Zou
Keyword(s):  
Numerical Simulation ◽  
Materials Science ◽  
Diamond Tool ◽  
Diffusion Distance ◽  
Diamond Cutting ◽  
Ferrous Metals ◽  
Science Theory ◽  
Diffusion Wear ◽  
Tool Wear Mechanisms ◽  
And Diffusion

The details of the process with respect to tool wear mechanisms in diamond cutting of ferrous metals are still not clear. For the sake of further studying on diffusion wear of diamond tool, as a consequence, the numerical simulation of diffusion process at interface of diamond and workpiece is presented based on Fick’s second law in this paper. The diffusion model of carbon atoms diffusion into γ-Fe has been established in terms of materials science theory. In addition, the distribution of carbon atoms concentration in regard to the variable of diffusion distance and diffusion time is calculated by numerical simulation, the tendency of concentration distribution is consistent with the results of previous studies. This work provides a basis research for diffusion wear in diamond cutting of ferrous metals.

Numerical Simulation & Experimental Investigation of SMT Laser Microsoldering Thermal Process

1991 ◽  
Vol 226 ◽  
Author(s):  
Wang Chunqing ◽  
Qian Yiyu ◽  
Jiang Yihong
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Experimental Investigation ◽  
Thermal Process ◽  
Light Wave ◽  
Light Reflection ◽  
Lead Wire ◽  
Wire Surface ◽  
Conductivity Variation ◽  
Thermal Conductivity Variation

AbstractIn this paper,a numerical simulation of thermal process in the SMT laser microsoldering joint has been developed, in which, the influence on thermal process of the factors such as the thermal conductivity variation of solder with temperature, light reflection coefficient of the lead wire surface, and heat exchange on the surface of SMT materials all have been considered. In order to carry this numerical calculation practice and prove it's results,the reflexive characteristic of light wave to the SMT materials has been gauged,and the dynamic temperature process of laser microjoint has been measured by a new experimental method which was invented by the authors.The results of numerical simulation have been borne out by the tests, and the influences of heating parameters on thermal process has been analysed in this paper.The conclusions will be advantageous to the further study of the microjoint quality control in the SMT laser microsoldering.

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