Twin disc micropitting tests

Tiina Ahlroos (Corresponding Author), Helena Ronkainen, Aino Helle, Risto Parikka, Jouko Virta, Simo Varjus

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.
Original languageEnglish
Pages (from-to)1460-1466
Number of pages7
JournalTribology International
Volume42
Issue number10
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

Gears
lubricants
Lubricants
surface treatment
Surface treatment
Surface roughness
Case hardening
Carbonitriding
mineral oils
Mineral Oil
power transmission
Mineral oils
Steel
Power transmission
durability
hardening
Film thickness
esters
Esters
surface roughness

Keywords

  • gears
  • micropitting
  • lubrication

Cite this

Ahlroos, Tiina ; Ronkainen, Helena ; Helle, Aino ; Parikka, Risto ; Virta, Jouko ; Varjus, Simo. / Twin disc micropitting tests. In: Tribology International. 2009 ; Vol. 42, No. 10. pp. 1460-1466.
@article{8095c0b112bd4de4987aac2a374ce83d,
title = "Twin disc micropitting tests",
abstract = "Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.",
keywords = "gears, micropitting, lubrication",
author = "Tiina Ahlroos and Helena Ronkainen and Aino Helle and Risto Parikka and Jouko Virta and Simo Varjus",
note = "Project code: G4SU01153",
year = "2009",
doi = "10.1016/j.triboint.2009.05.023",
language = "English",
volume = "42",
pages = "1460--1466",
journal = "Tribology International",
issn = "0301-679X",
publisher = "Elsevier",
number = "10",

}

Ahlroos, T, Ronkainen, H, Helle, A, Parikka, R, Virta, J & Varjus, S 2009, 'Twin disc micropitting tests', Tribology International, vol. 42, no. 10, pp. 1460-1466. https://doi.org/10.1016/j.triboint.2009.05.023

Twin disc micropitting tests. / Ahlroos, Tiina (Corresponding Author); Ronkainen, Helena; Helle, Aino; Parikka, Risto; Virta, Jouko; Varjus, Simo.

In: Tribology International, Vol. 42, No. 10, 2009, p. 1460-1466.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Twin disc micropitting tests

AU - Ahlroos, Tiina

AU - Ronkainen, Helena

AU - Helle, Aino

AU - Parikka, Risto

AU - Virta, Jouko

AU - Varjus, Simo

N1 - Project code: G4SU01153

PY - 2009

Y1 - 2009

N2 - Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.

AB - Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.

KW - gears

KW - micropitting

KW - lubrication

U2 - 10.1016/j.triboint.2009.05.023

DO - 10.1016/j.triboint.2009.05.023

M3 - Article

VL - 42

SP - 1460

EP - 1466

JO - Tribology International

JF - Tribology International

SN - 0301-679X

IS - 10

ER -