Wear Characteristics of Hardfacing Coatings Obtained by Tungsten Inert Gas Method

Abstract

This paper evaluates the wear characteristics of hardfacing coatings. Regenerative hardfacing coatings were applied with the TIG (Tungsten Inert Gas) method. The solid welding wires were used to obtain the coatings marked as: EL-500 HB, EL-650 HB, and EL-3348. The tribological analysis of samples was conducted at room temperature. The wear rate was evaluated with a THT 1000 Anton Parr ball-on-disc tribotester, in accordance with the ASTM G-133 standard. The counterbody (static partner) consisted of balls with the diameter of 6 mm made of Al2O3. The test was performed with the sliding speed of the friction pair 0.4 m/s, track radius 10 mm, normal load 20 N, acquisition rate 10 Hz and sliding distance 2000 m. During the test, the friction coefficient and wear rate were recorded. The multi-criteria assessment of the construction materials discussed, while taking into account five criteria, showed that EL-3348 HB is the best material. Computer applications were used for multi-criteria assessment and statistical processing of data.

The Geometric Surface Structure of EN X153CrMoV12 Tool Steel after Finish Turning Using PCBN Cutting Tools

“…The authors of the cited studies concluded that the microstructure of hardened steel had the main impact on the wear of the tested PCBN tools. These conclusions coincide with those of the current work [25][26][27].…”

“…During the operation of tools, along with the general principles of wear, special ones appear, often leading to their damage. Admittedly, the guides provide the permissible wear values at which the tool should be replaced, but they may differ significantly from those at which the cutting potential is fully used [25,26]. The dominant factor influencing the optimal conditions of tool operation is mainly damage caused by the wear of its cutting surfaces.…”

A Comparative Study of Hardfacing Deposits Using a Modified Tribological Testing Strategy

“…It was revealed that an increase in carbon content increases the hardness, but also increases the brittleness of the hardfacing alloys. Dziedzic et al [25] tested regenerative hardfacing coatings applied with the tungsten inert gas. The multi-criteria analysis of the results of a ball-on-disk tribometer showed that the wear rate was the smallest for the samples with the highest hardness.…”

Analysis of Wear Resistance of Borided Steel C45

“…On the one hand, the presence of carbon in the friction surface reduces the adhesive interaction of contacting solids. On the other hand, it may reduce the lubrication efficiency [37][38][39][40][41][42].…”