EVALUATION OF TRIBOLOGICAL CHARACTERISTICS OF MATERIAL PREPARED BY DMLS TECHNOLOGY

  • 1Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Slovakia, Presov, SK
  • 2Institute of Materials Research Slovak Academy of Sciences, Kosice, Slovakia, Kosice, SK
  • 3Presov, SK

Abstract

The method of producing molten metal powder according to the European laser sintering system (EOSINT) was used to prepare the experimental material. The used powder metal material was designated EOS Maraging Steel - MS1. It is a steel powder, which is optimized especially for processing in EOSINT M 280 systems. The measurement of tribological characteristics of prepared materials was performed using the standard STN ISO 20808: 2004. The ball-on-disc dry sliding friction and wear experiments have been made on prepared materials in contact with steel ball. For the experiment, there were determined the following conditions: the value of normal load 5 N, the sliding radius 2 mm. Wear testing was carried out at room temperature 25°C using the ball-on-disc technique. Wear behaviour of the prepared material was studied in dry sliding; relative humidity was 26-28%. The normal load of 5 N; and sliding speed of 0.1 m/s was applied. The total sliding distance was 1000 m. The worn surface was analysed by confocal microscope and scanning electron microscope.

Recommended articles

QUALIMETRIC METHOD OF ASSESSING RISKS OF LOW QUALITY PRODUCTS

ROMAN TRISHCH, OLESIA NECHUIVITER, KOSTIANTYN DYADYURA, OLEKSANDR VASILEVSKYI, IRYNA TSYKHANOVSKA, MAKSYM YAKOVLEV
Keywords: qualimetry | risk assessment | risk of low quality | summarizing indicator | multicriteria quality assessment | dimensionless scale.

ON THE SIMULATION OF THE FIRST NATURAL FREQUENCY OF A TUNED MASS DISC DAMPER

CHRISTIAN BRECHER, GUIFENG ZHAO, MARCEL FEY
Keywords: finite element method | Simulation | tuned mass disc damper | natural frequency | impact hammer test

3D EVALUATION OF THE TOPOGRAPHY OF THE SURFACE BY ABRASIVE WATER JET MACHINING TECHNOLOGY

GERHARD MITAL, EMIL SPISAK, PETER MULIDRAN, LUBOS KASCAK, TOMAS JEZNY
Keywords: Contactless | 3D | measure | Laser | profilometry | surface

HEAD ON HALL EFFECT SENSOR ARRANGEMENT FOR DISPLACEMENT MEASUREMENT

MICHAL KELEMEN, TATIANA KELEMENOVA, MARTIN VARGA, PETER JAN SINCAK, LUKAS LESTACH, ELENA SERGEEVNA BAYMETOVA, MARIA RAVILEVNA KOROLEVA, ALENA ALEKSEEVNA CHERNOVA
Keywords: Hall effect sensor | permanent magnet | measurement | uncertainty