Results 301 to 310 of about 1,078,718 (347)

Machined surface temperature in hard turning

International Journal of Machine Tools and Manufacture, 2017
Abstract Machined surface temperature is critical in turning of hardened steels because high surface temperature can lead to the formation of the white layer, which may have negative impacts on the steel fatigue life. This paper presents two experimental methods to measure machined surface temperatures in hard turning.
Lei Chen, Bruce L. Tai, Rahul G. Chaudhari, Xiaozhong Song, Albert J. Shih   +4 more
openaire   +1 more source

Chip Formation When Hard Turning Steel

Manufacturing Science and Engineering: Volume 2, 1997
Abstract Hard turning of machine parts is a production process that holds considerable promise for the future since it is an effective means of increasing productivity. Instead of machining a product in the soft state, hardening the part by heat treatment, and then providing the required finish and dimensional accuracy by grinding the ...
Amitabh Vyas, Milton C. Shaw
openaire   +1 more source

Surface Integrity in Hard Turning

2003
Highly-stressed steel components, e.g. gears and bearing parts, are appropriate applications for hard turning. Therefore the process effects on significant engineering properties of work materials have to be carefully analyzed. Roughness, residual stresses and white layers as parts of surface integrity, are function of the machining parameters and of ...
J. Rech, C. Lescalier
openaire   +1 more source

Hard Turning with PCBN Tooling

1999
Material removal, at economic rates, from hardened workpieces has always presented a challenge and, until quite recently, abrasive machining processes were the only option for hard-facings. However, cutting tools based on polycrystalline cubic boron nitride (PCBN) have opened up the possibility of turning and milling as attractive alternatives for ...
E. J. Brookes, R. D. James, X. Ren
openaire   +1 more source

Turning and Grinding of Hard Alloys

Advanced Engineering Materials, 1999
Hard alloys count among the hard-to-machine materials. Performance characteristics such as high hardness and wear resistance as well as the structural difference between hard phases and metallic matrix impede their machineability. The authors review the effects of the mechanical and thermal energy exerted by turning and grinding processes on the ...
A. Packeisen, W. Theisen
openaire   +1 more source

3D FEA Modeling of Hard Turning

Journal of Manufacturing Science and Engineering, 2002
A practical explicit 3D finite element analysis model has been developed and implemented to analyze turning hardened AISI 52100 steels using a PCBN cutting tool. The finite element analysis incorporated the thermo-elastic-plastic properties of the work material in machining.
Y. B. Guo, C. R. Liu
openaire   +1 more source

Roller burnishing of hard turned surfaces

International Journal of Machine Tools and Manufacture, 1998
Abstract In a hard roller burnishing operation, a hydrostatically borne ceramic ball rolls over the component surface under high pressures. The roughness peaks are flattened and the quality of the workpiece surface is improved. When combined with hard turning, this process provides a manufacturing alternative to grinding and honing operations.
F. Klocke, J. Liermann
openaire   +1 more source

Microstructural Effects in Precision Hard Turning

Manufacturing Science and Engineering, 1996
Abstract Precision hard turning provides an alternative to grinding in some finishing applications. Rapid tool wear, however, remains a bottleneck to the process being economically viable. This experimental study reports microstructural effects on cubic boron nitride (CBN) tool wear in finish hard turning.
Y. Kevin Chou, Chris J. Evans
openaire   +1 more source

Comparison of rotational turning and hard turning regarding surface generation

Production Engineering, 2014
In this paper, two different turning processes namely rotational turning and hard turning are compared to each other regarding surface generation aspects. By experiments it is shown that, with higher feed rates, rotational turning yields same surface quality as hard turning.
Florian Degen, Fritz Klocke, Thomas Bergs, Philipp Ganser   +3 more
openaire   +1 more source

Surface Integrity Generated by Precision Hard Turning

CIRP Annals, 1999
Abstract Rolling contact fatigue tests were conducted to find the effect of precision hard turning. The tests showed that hard turning provides as good a fatigue performance as grinding. Hard turning produces compressive residual stresses in a deep subsurface, which contribute to a long fatigue life.
Y. Matsumoto, F. Hashimoto, G. Lahoti
openaire   +1 more source