Results 141 to 150 of about 1,265 (179)
Some of the next articles are maybe not open access.
Design of coatings to minimize tool crater wear
Surface and Coatings Technology, 1993Abstract A quantitative study of the micromechanisms of crater during the high speed machining of an AISI 1045 grade steel with a tungsten carbide tool has confirmed that diffusional wear is the dominant mechanism of crater wear. Neutron activation analysis is used to determine the amount of tungsten dissolved in the chips as a function of cutting ...
S.V. Subramanian, S.S. Ingle, D.A.R. Kay
openaire +1 more source
An analysis of the development of carbide tool crater wear
International Journal of Machine Tool Design and Research, 1967Abstract A total of 127 contour maps of crater wear representing thirty-five different cutting conditions is presented. The effects of three cutting variables on selected crater wear parameters were investigated by regression analysis and substantiated by qualitative description. The selected crater wear parameters are 1.
S.M. Wu, R.N. Meyer
openaire +1 more source
Crater Wear Modeling in Conventional Speed Machining
Advanced Materials Research, 2010Wear modeling makes it possible to predict the evolution of wear profile and explain wear mechanism from process variables, such as temperature, pressure and sliding velocity etc. A composite crater wear model considering adhesive and diffusion wear is established by means of experiment and modeling in conventional speed machining.
Xue Feng Bi +4 more
openaire +1 more source
Theoretical Model of Crater Wear
Journal of Engineering for Industry, 1971A one dimensional mass diffusion equation including the first derivatives with respect to the coordinates in Fick’s second law is considered. The diffusion coefficient is also considered, as a function of temperature distribution in a semi-infinite media under certain boundary conditions.
openaire +1 more source
Ball crater testing for the measurement of the unlubricated sliding wear of wear-resistant coatings
Surface and Coatings Technology, 2000Abstract This paper describes a simple modification of the conventional ball-cratering test equipment that enables sliding wear and friction experiments to be performed. Tests can be carried out either dry or with lubricants. In the modified test no abrasive is added, and friction is measured by means of strain-gauged flexure elements.
M.G Gee, M.J Wicks
openaire +1 more source
The Mechanism of Crater Wear of Cemented Carbide Tools
Journal of Fluids Engineering, 1956Abstract This paper presents an analysis of tool-wear data in terms of fundamental variables consistent with the nature of the contact and rubbing of clean metallic surfaces. Wear of cemented-carbide tools on the top surface is examined in the light of the mechanism of frictional wear as proposed originally by Holm and recently as ...
K. J. Trigger, B. T. Chao
openaire +1 more source
Optical contour mapping of cutting tool crater wear
International Journal of Machine Tool Design and Research, 1966Abstract An optical crater wear measuring technique is presented which provides complete information, both qualitatively and quantitatively, on the crater development. The technique is simple, accurate, and nondestructive. This optical contour mapping technique utilizes an objective lens with a narrow depth of field, making it possible to photograph
R.N. Meyer, S.M. Wu
openaire +1 more source
The crater grinder method as a means for coating wear evaluation — an update
Surface and Coatings Technology, 1997Abstract The crater grinder test has been developed in order to obtain the abrasive resistance of thin coatings. It is capable of determining the specific abrasive wear rate of the coating and the substrate individually, even for very thin coatings. This paper reports on further development and evaluation of the test. The equation for calculation of
Sture Hogmark +2 more
exaly +2 more sources
Crater wear measurement using computer vision and automatic focusing
Journal of Materials Processing Technology, 1996Abstract In this paper we present a technique to measure the crater wear using image processing and automatic focusing. The new contour detection algorithm, which can adapt in a noisy image, is suggested. It is suitable for eliminating high frequency noises without blurring and with lower processing time. An automatic focusing technique is applied to
Min-yang Yang, Oh-dal Kwon
exaly +2 more sources
Application of Ball Cratering Method to Study Abrasive Wear
Surface Engineering, 1998The present paper discusses the feasibility of a new use of the ball cratering technique (Calotest) for studying the abrasive wear resistance of hard coatings. The few modifications that were necessary to make the Calotestequipment suitable for this task mainly concerned the calibration of rotational velocity and the controlled delivery of the ...
M. H. Staia +4 more
openaire +1 more source