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Environmental Loads Resulting from Manufacturing Technology

Gabryelewicz Izabela, Lenort Radim, Wędrychowicz Maciej, Krupa Patryk, Woźniak Waldemar

Rocznik Ochrona Środowiska

2021

Tom 23

613--628

The study of environmental loads resulting from manufacturing technology is of great importance for environmental protection. Applying the principles of sustainable development means "a way of farming in which meeting the needs of the present generation will not reduce the chances of meeting the needs of future generations." Faced with such a challenge, the product must be assessed throughout its entire life cycle (LCA). From the available technologies and materials, one should choose those that are least harmful to the environment. In order to make a correct choice, it is necessary to know and understand the technological processes and phenomena that take place in them. Using off-theshelf LCA applications, without knowing basic knowledge of manufacturing technology, can bias the results. The aim of the article is to present benefits resulting from the environmental assessment of manufacturing processes.

Laser ablation surface layer texturing of selected Fe-C alloys

Napadłek W.

Journal of Achievements in Materials and Manufacturing Engineering

2012

Vol. 55, nr 2

748--752

Purpose: Present the results of their own research on the ablative laser texturing of selected Fe-C alloys. Design/methodology/approach: This article presents selected examples of the microstructure and stereometry investigations of Fe-C alloys (41Cr4 steel, 41CrAlMo7 acid-resistant steel, steel resistant towards corrosion and low-alloying gray cast iron EN-GJL300) were presented. Findings: One study found that an increase in the radiation power density q = 0,53 MW/cm2 significantly affect the efficiency (depth) of ablative laser texturing. After crossing the power density is a significant reduction in the efficiency of laser ablation process. This is probably connected with the phenomenon of plasma shielding generated in the laser pulse. Research limitations/implications: In the following laboratory tests are proposed in the use of absorbent materials to increase the absorption of the laser radiation and inertial layers to improve the efficiency texturing. Practical implications: The research results can be used to modify the surface layer of machine components which are wear-resistant in friction conditions. Originality/value: The novelty in the paper is the use of laser ablation phenomenon to produce surface texture in alloys Fe-C, mainly in terms of tribological.