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Showing 2 results for Stainless Steel 316
Farshid@um.ac.ir, , , ,
Volume 21, Issue 1 (1-2021)
Abstract
| Kerf width (cutting width) is an important quality parameter in the laser cutting process, and if it is less, means higher cutting accuracy and lower cost of materials. In this study, using a fiber laser-cutting machine, which is one of the new generation lasers, the effect of all parameters affecting the kerf width has been investigated. These parameters include laser power (450 to 750 watts), cutting speed (30 to 130 mm/s), focal point position (5 to +5 mm), nozzle standoff (0.6 to 2.5 mm) and gas pressure (1.2 to 1.8 bar), for the cut of stainless steel 316L sheet with a thickness of 0.8 mm. After measuring the kerf width with a special imaging system and analyzing the results with ANOVA, it was found that laser power and gas pressure were directly related to the kerf width and the cutting speed and nozzle standoff were inversely related to the kerf width. Laser focal point position was also determined as the most effective parameter in the formation of the kerf width, which should be on the surface to minimize the kerf width. In this study, it was shown that with the correct adjustment of the parameters, material consumption and cutting accuracy are improved up to 70%. In addition, by using linear regression, the model of kerf width changes with respect to various parameters has been obtained and by comparing its response with the experimental results, acceptable model accuracy has been observed. |
Hamidreza Rezaei Ashtiani, Naser Meyghani, Omid Khalili,
Volume 23, Issue 12 (12-2023)
Abstract
At the end of the forming process, when the part is removed from the mandrel and the matrix and the part is loaded, a deformation occurs in the part, and this deformation after forming is called spring back. This research was carried out in order to experimentally determine the spring return of stainless steel 316 and carbon steel ST37 with different thicknesses in C-die forming and compare it with finite element simulation. The parts with three thicknesses of 1, 1.5, and 2 mm, forming and the geometrical dimensions of the spring back of the sheets have been verified. The results showed that the experimental spring back in the finite element simulation is consistent with the test, and also by reducing the thickness, spring back increases, which is affected by perfect elastic zone and surface plastic strain and membrane and bending stress.
