Results 261 to 270 of about 298,151 (307)

Rolling-Contact Wear

2017
Abstract This article discusses the physical signs of rolling-contact wear (RCW). It lists the major considerations in gear design and describes the mechanisms of RCW. The article provides a guide to rolling-contact fatigue (RCF) testing methods. It explains the steps involved in the processes of RCF and RCW.
openaire   +1 more source

Wear of polymers by roll-formation

Wear, 1973
Abstract Wear by roll-formation is common among polymers when bulk deformation and “give” exist. The necessary condition for such wear is that the strength of an asperity of a given polymer will be lower than both the strength of the opposing asperity of the other polymer and the interfacial friction force over the relevant surface of both asperities.
openaire   +1 more source

Effect of the Electrical Copper Rolling Parameters on the Wear of Roll Passes

Russian Metallurgy (Metally), 2020
The roll wear in a hot section mill for copper is measured under industrial conditions. Fatigue and oxidative wear are found to be the main types of wear, which consist the appearance and development of a network of erosion cracks. The technique of quantitative wear measurement consists in roll remachining at a given step across the worn layer depth ...
Yu. N. Loginov, A. Yu. Postylyakov, Yu. V. Inatovich   +2 more
openaire   +1 more source

Prediction of the wear profile of a roll groove in rod rolling using an incremental form of wear model

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2003
A model for predicting the wear profile of the ductile cast iron roll during rod (or bar) rolling is proposed using Archard's wear equation. Archard's wear equation was reformulated as an incremental form and the hardness of the roll was expressed as a function of rolling time under a high temperature.
D H Kim, Y Lee, S J Yoo, W Y Choo, B M Kim   +4 more
openaire   +1 more source

Modification of a pin-on-disk wear machine for rolling contact wear

Wear, 1998
Using a simple modification, a pin-on-disk tribometer was converted to enable roller-on-disk contact. The roller-on-disk geometry was successfully used in wear tests of short to medium duration with a partially-stabilised zirconia disk and a hardened steel roller.
G.L. Kelly, T.R. Finlayson
openaire   +1 more source

Prediction of Roll Profile Wear in the Cold Roll Forming Process

Key Engineering Materials, 2009
This paper presents a model for prediction of forming roll profile wear during the cold roll forming process. The method is based on contact pressure distribution, geometrical description of the initial forming roll profile and NURBS representation of the contact area.
Galakhar, A., Daniel, W.J.T., Meehan, P.A.   +2 more
openaire   +2 more sources

Wear of rolling element bearings

2013
Bearing wear prognosis requires effective modelling and monitoring of rolling contact. Rolling contact wear is responsible for the damages initiating on and beneath the contacting surfaces. It is commonly observed in the experimental studies that rolling contact wear follows specific stages of initiation (i.e.
El-Thalji, Idriss, Jantunen, Erkki
openaire   +3 more sources

New Method for Evaluating Thermal Wear of Rolls in Rolling Process

Journal of Iron and Steel Research International, 2008
Abstract A new method was developed by a thermal wear machine to evaluate the thermal wear of rolls in steel rolling process. The steel strip and rolls were simulated by upper and lower heating disks. The upper heating disk could be kept at a temperature of over 900 °C by induction heating. The pressure between the disks as high as 323.
Chang-sheng Li, Xiang-hua Liu, Guo-dong Wang   +2 more
openaire   +1 more source

Effect of wear debris on wear in rolling-sliding motion

Wear, 1983
Abstract The effect of wear particles on wear was investigated using a four-ball extreme pressure lubricant test apparatus. The wear particles present in both filtered and unfiltered oil samples were examined using a duplex Ferrograph analyser and a bichromatic microscope.
openaire   +1 more source

Wear and corrosion of silicon nitride rolling tools in copper rolling

Wear, 2011
Abstract For hot rolling applications it is essential to have materials with excellent high-temperature properties. Silicon nitride combines the properties optimum relevant to such high demanding applications, including thermal shock resistance, low density, high elastic modulus and low coefficient of friction.
Khader, I., Hashibon, A., Albina, J.-M., Kailer, A.   +3 more
openaire   +2 more sources