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Additive and Subtractive Manufacturing of Inconel 718 Components - Estimation of Time, Costs and Carbon Dioxide Emission – Case Study

Zębala Wojciech, Gaweł Anna

Advances in Science and Technology. Research Journal

2024

Vol. 18, no 1

98--109

The article presents the cost analysis of three techniques that can be used to produce a cylindrical part from Inconel 718 nickel alloy. First of them allows the part to be shaped by additive manufacturing (AM). In the second technique the shape is obtained by forging. Both techniques require the use of machining to give the final dimensional and shape accuracy of the manufactured part. The third technique is based solely on machining operations. Research has shown that the most expensive technique for high-volume production is SLM/LMF. Based on the case study, it can be concluded that after a year of production using the SLM/LMF, forging and machining methods, the carbon dioxide emission is the biggest in the additive manufacturing. Optimizing the Ra and Fc parameters causes differences in carbon dioxide emissions. The turning process including machining optimization due to Fc characterizes a higher ability to produce parts than optimization due to roughness parameter Ra.

Thermal efficiency of the Trudisk 4002

Jędrusik Agnieszka, Opiekun Zenon, Lenik Magdalena

Physics for Economy

2021

Vol. 4

29-34

The article presents the test results of thermal efficiency of the welded thin heatresistant sheets of Inconel 718 nickel alloys using the Trudisk 4002 instalated in the TruLaser 5020 equipment. The thermal efficiency of the laser was determined using a water-cooled calorimeter. Thin sheet metal samples 0,7 and 0,9 mm, installed in the calorimeter were subjected to a laser beam with the power of 400 to 700 W, moved along the line at a constant speed Vs = 25 mm/s. The thermal efficiency was calculated as the quotient of the heat absorber by the welded sheets, determined calorimetrically, to the total amount of heat generated by the laser. The results show that thermal efficiency depends non-linearly on the laser power. The thickness of the plates to be welded does not affect efficiency. As the power of the laser increases from 400 to 600 W, thermal efficiency decreases three times from 21% to 7%, and with the increase of its power to 700 W, thermal efficiency increases to 28%.