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Evaluation of some parameters of hard surfacing treatment of the functional surfaces of forestry tools

Ťavodová M., Kalincová D., Slováková I.

Management Systems in Production Engineering

2018

nr 4 (26)

222--226

In this paper we discuss the possibility of increasing service life of tools used in forestry for mulching of undesirable forest growths. In a heterogeneous working environment in which they are operated, such tools are subjected to constant abrasion and impact loading. There are several ways how to extend their service life and operational fitness. One of these is hard surface treatment, or hard surfacing of their functional surfaces. In our experiment, we chose suitable hard surfacing materials and applied these on the sample materials using the MMA and MAG welding. The hard surface was applied in an one layer. Subsequently, we performed hardness tests, microscopic analysis of the structure of the basic material and the hard surface and evaluation of the fusion penetration of the base material with the hard surfacing weld. Fusion is crucial as it determines the cohesiveness of the weld and base materials and thus also the actual extension of the service life of the tools.

Napawanie utwardzające stali 14MoV6-3

Pocica A., Krzywdziński A.

Przegląd Spawalnictwa

2016

R. 88, nr 4

51--53

W artykule zaprezentowano wyniki badań napoin wykonanych proszkiem stellitowym o różnym składzie chemicznym na stali 14MoV6-3. Wykonano badania metalograficzne i pomiary twardości napoin przed i po obróbce cieplnej.

The article presents the results of welds performed stellit powder with different chemical compositions on steel 14MoV6-3. Metallographic test and weld hardness before and after heat treatment was performed.

Hard surfacing repairing layers in erosive wear process

Vinas J., Brezinova J., Guzanova A., Lorincova D.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2010

z. 81 [277]

127-134

The contribution deals with evaluation of tribological properties of two types three-layer hard surfacing claddings with various structural bases. There were used samples made out from S235JRG2 EN10025-94 as reference material. Within the frame of experimental works there was realised metallographic analysis, measuring of hardness and micro-hardness of claddings before and after erosive wear loading. Erosive wear was evaluated by simulation of erosive action. Aim of research was to determine influence of erosive particle impact angle and structural composition of claddings on their wear resistance.