Abstract
The paper presents the investigations of selected chemical and mechanical properties as well as macro- and microstructure of materials formed using thermal drilling process (Flow drill). The aim of this study was to determine the microstructure of the coatings produced using laser cladding with powder technology. The coatings were produced on the low-carbon steel using 1 kW disc laser. After modification of surface, the thermal drilling process was applied. To produce all coatings, the pure copper powder was used. In this study the laser power equal of 500, 700 and 900 W were used. The microstructure, chemical composition (EDS) and microhardness were investigation. It was found that the surface modification of low carbon steel and next conducted thermal drilling process caused change the surface properties on the hole flange. It was found that surface modification of steel using laser cladding with cooper powder and next Flow drill process contributes to the change in microhardness and chemical composition on hole flange.
Highlights
Surface engineering technologies have influenced on the development of other production technologies and materials processing such as surface modification [1 - 13] as well as metal forming processing [14-22]
The thermal drilling is a one-step process, it does not require any change of tools or additional treatment before and after the process, and the time needed to produce the hole flange is small, just a few seconds
The output material used for the laser cladding and thermal drilling processes was the general purpose structural S235JRH steel
Summary
Surface engineering technologies have influenced on the development of other production technologies and materials processing such as surface modification [1 - 13] as well as metal forming processing [14-22]. Technological advances have strongly influenced the conventional edge drilling technology by Flow drill technology Many characteristics of this process have benefited from it compared to the older known processing methods. The thermal drilling is a one-step process, it does not require any change of tools or additional treatment before and after the process, and the time needed to produce the hole flange is small, just a few seconds. This process is very fast and easy to automate, making it suitable for serial or mass production
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