scholarly journals Special Issue on Recent High Efficiency and Heavy Grinding. Creep-feed Grinding of Hard Materials for Cutting Tools.

1992 ◽  
Vol 58 (4) ◽  
pp. 604-606
Author(s):  
Koichiro WAKIHIRA
Keyword(s):  
High Efficiency ◽  
Cutting Tools ◽  
Special Issue ◽  
Hard Materials ◽  
Creep Feed Grinding ◽  
Creep Feed

High efficiency axial deep creep-feed grinding machining technology of engineering ceramics materials

2012 ◽  
Vol 27 (5) ◽  
pp. 902-906
Author(s):  
Fang Guo ◽  
Baoguo Zhang ◽  
Hong Lu ◽  
Xinli Tian ◽  
Jianquan Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Engineering Ceramics ◽  
Creep Feed Grinding ◽  
Creep Feed

Temperatures in Grinding—A Review

2017 ◽  
Vol 139 (12) ◽  
Author(s):  
W. Brian Rowe
Keyword(s):  
Thermal Analysis ◽  
Process Control ◽  
Heat Balance ◽  
High Efficiency ◽  
Temperature Model ◽  
Wide Applicability ◽  
Fine Grinding ◽  
Creep Feed Grinding ◽  
Creep Feed ◽  
Improved Accuracy

Many scientists contributed to the analysis of temperatures in grinding leading up to present-day understanding. This paper draws together important developments from various papers and aims to identify an improved general approach to thermal analysis with wide applicability including for conventional fine grinding, creep feed grinding, and high efficiency deep grinding. Complexity of the basic derivation is avoided since the resulting temperature model is based purely on heat balance. Challenges for future thermal analysis are indicated. Emphasis is placed on fundamental principles for improved accuracy and for convenience of application in process control.

scholarly journals Special Issue on High Performance Abrasive Technologies

2022 ◽  
Vol 16 (1) ◽  
pp. 3-4
Author(s):  
Takazo Yamada ◽  
Kazuhito Ohashi ◽  
Hirofumi Suzuki ◽  
Akinori Yui
Keyword(s):  
High Precision ◽  
Ultrasonic Vibration ◽  
High Performance ◽  
High Efficiency ◽  
Hardened Steel ◽  
Textured Surfaces ◽  
Special Issue ◽  
Grinding Wheels ◽  
Creep Feed ◽  
Cutting Processes

Demand for the high-precision and high-efficiency machining of hard ceramics, such as silicon carbide for semiconductors and hardened steel for molding dies, has significantly increased for optical and medical devices as well as for powered devices in automobiles. Certain types of hard metals can be machined by deterministic precision-cutting processes. However, hard and brittle ceramics, hardened steel for molds, and semiconductor materials have to be machined using precision abrasive technologies, such as grinding, polishing, and ultrasonic vibration technologies that use diamond super abrasives. The machining of high-precision components and their molds/dies using abrasive processes is very difficult due to their complex and nondeterministic natures as well as their complex textured surfaces. Furthermore, the development of new cutting-edge tools or machining methods and the active use of physicochemical phenomena are key to the development of high-precision and high-efficiency machining. This special issue features 11 research papers on the most recent advances in precision abrasive technologies. These papers cover the following topics: - Characteristics of abrasive grains in creep-feed grinding - Quantitative evaluation of the surface profiles of grinding wheels - ELID grinding using elastic wheels - Nano-topographies of ground surfaces - Novel grinding wheels - Grinding characteristics of turbine blade materials - Polishing mechanisms - Polishing technologies using magnetic fluid slurries - Application of ultrasonic vibration machining - Turning and rotary cutting technologies This issue is expected to help its readers to understand recent developments in abrasive technologies and to lead to further research. We deeply appreciate the careful work of all the authors, and we thank the reviewers for their incisive efforts.

scholarly journals Investigation of Multiparameter Laser Stripping of AlTiN and DLC C Coatings

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 951
Author(s):  
Tomáš Primus ◽  
Josef Hlavinka ◽  
Pavel Zeman ◽  
Jan Brajer ◽  
Martin Šorm ◽  
...  
Keyword(s):  
Surface Roughness ◽  
High Efficiency ◽  
Steel Substrate ◽  
Cutting Tools ◽  
High Hardness ◽  
Working Time ◽  
Nanosecond Laser ◽  
Altin Coating ◽  
Successful Removal ◽  
Frequency Laser

The lifetime and properties of cutting tools and forming moulds can be prolonged and enhanced by the deposition of hard, thin coatings. After a certain period of usage, the coating will deteriorate. Any remaining coating must be removed prior to successful recoating. Laser stripping is a fast and environmentally friendly coating removal method. In this paper, we present laser removal of two types of coatings deposited on a 1.2379 tool steel substrate, namely, an AlTiN coating with high hardness and a DLC C coating with a small coefficient of friction (COF). A powerful nanosecond laser was employed to remove the coating from the substrate with high efficiency, along with suitable residual surface roughness. Measurements were taken of surface roughness, removed depth, and working time on a stripped area of 1 cm2. The samples were evaluated under a microscope, with a 3D profilometer, and by EDS chemical analysis. Successful removal of the coating was confirmed by optical analysis, but detailed chemical characterisation showed that about 30% of the coating element may remain on the surface. Moreover, a working time of less than 7.5 s per cm2 was obtained in this study. In addition, it was shown that the application of a second low energy, high frequency laser beam pass leads to remelting of the peaks of the material and reduced surface roughness.

scholarly journals Feasibility study of creep feed grinding of 300M steel with zirconium corundum wheel

2021 ◽  
Author(s):  
Jiaqiang Dang ◽  
Heng Zang ◽  
Qinglong An ◽  
Weiwei Ming ◽  
Ming Chen
Keyword(s):  
Feasibility Study ◽  
Creep Feed Grinding ◽  
Creep Feed ◽  
300M Steel

Analysis of Energy Partition in Grinding

1995 ◽  
Vol 117 (1) ◽  
pp. 55-61 ◽  
Author(s):  
C. Guo ◽  
S. Malkin
Keyword(s):  
Wheel Speed ◽  
Energy Partition ◽  
Composite Surface ◽  
Workpiece Surface ◽  
Abrasive Grains ◽  
Temperature Distributions ◽  
Analytical Results ◽  
Creep Feed Grinding ◽  
Grinding Fluid ◽  
Creep Feed

An analysis is presented for the fraction of the energy transported as heat to the workpiece during grinding. The abrasive grains and grinding fluid in the wheel pores are considered as a thermal composite which moves relative to the grinding zone at the wheel speed. The energy partition fraction to the workpiece is modeled by setting the temperature of the workpiece surface equal to that of the composite surface at every point along the grinding zone, which allows variation of the energy partition along the grinding zone. Analytical results indicate that the energy partition fraction to the workpiece is approximately constant along the grinding zone for regular down grinding, but varies greatly along the grinding zone for regular up grinding and both up and down creep-feed grinding. The resulting temperature distributions have important implications for selecting up versus down grinding especially for creep-feed operations.

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