Tribological Properties of Super Field Weld with Micro-Jet Process

Thermally spraying with micro-jet cooling is an innovate technology. It is possible to get fine dispersive structure of coatings during the shorter time in comparable to the classical high velocity oxygen fuel process (HVOF). It corresponds with good corrosion-erosion properties of structure. In the paper the parameters of the spraying with micro-jet cooling process are presented. The selected properties of coatings obtained by hybrid method are presented. The results of wear tests for hybrid and HVOF coating are compared. Results of investigation are very optimistic. The presented technology should be adapted to the actual production of protective coating for machines and construction working in wear conditions.

Section: The Idea Of Hybrid Spraying Methods Combinedmentioning

confidence: 99%

New Technological Concept for Thermal Spray Protective Coatings

Szczucka-Lasota

Piwnik

2017

“…In the case of different types of steel (e.g. NC6, 20MnCr5) the intensity of consumption drops a few to several percent compared to traditional methods of hardening [3].…”

Section: Introductionmentioning

confidence: 99%

“…In order to improve the plastic properties of hardened surface the laser-hardening process is connected with micro jet cooling system [1][2][3][4][5]. This causes changes in the microstructure of the surface layer.…”

Section: Introductionmentioning

confidence: 99%

The Tribological Properties of Laser Hardened Steel 42CrMo4 / Właściwości Tribologiczne Stali 42Crmo4 Hartowanej Laserowo

Tarasiuk¹,

Гордиенко²,

Wolocko³

et al. 2015

The paper presents results of research tribological properties laser hardened steel 42CrMo4. Parameter influencing on the quality of the hardened surface was laser head speed. The study was conducted on friction tester pin-on-disc type T-11, and a counter sample disc was silicate. Parameter determining the quality of the surface layer is the intensity of wear. Based on the results we obtain information about the laser head speed to temper steel 42CrMo4 so as to maintain a high resistance to wear.

“…The design of micro-jet injector is patented in Polen. Until now, the system was used only for welding technologies [15][16][17][18][19][20][21]. The latest national and international research publications contained findings and information, that indicate, that the cooling system of micro-jet gives the ability to control the structure and can be successfully used in automated thermal spray technologies of coatings [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Innovation in the Process of Thermal Spraying Coatings

Szczucka-Lasota¹

2016

In this paper, the hybrid method connects the ultrasonic spraying method with a injector of complex cooling micro-jet system is presented. The use of properly constructed injector allows for local and selective cooling of the coating structure immediately after spraying process. The construction of injector is the subject of patent in Polen. The presented new technology gives practical possibility of control of coatings structure. This is the kind of positive feedback between the technology process and obtained product (the quality of the process increases the quality of the final product). The initial experimental investigations, presented in this paper, show, that the obtained coatings structure is: fine-dispersion of the grain, with a lower porosity, good compactness and adhesion to the substrate.