Fracture Behaviour of High-Speed Grinding Wheels

1979 ◽  
pp. 493-503 ◽  
Author(s):  
G. Venkata Rao ◽  
H. Chandrasekharan
Keyword(s):  
High Speed ◽  
Fracture Behaviour ◽  
Grinding Wheels ◽  
High Speed Grinding

High-speed grinding with CBN grinding wheels — applications and future technology

2001 ◽  
Vol 110 (1) ◽  
pp. 78-88 ◽  
Author(s):  
M.J. Jackson ◽  
C.J. Davis ◽  
M.P. Hitchiner ◽  
B. Mills
Keyword(s):  
High Speed ◽  
Grinding Wheels ◽  
Future Technology ◽  
High Speed Grinding

The Influence of Surface Dipping and Bulk Filling Agents on Properties of High-Speed Grinding Wheels: Materialographic-Based Numerical Modelling

2020 ◽  
Vol 405 ◽  
pp. 43-47
Author(s):  
Ladislav Čelko ◽  
Petr Skalka ◽  
Karel Slámečka ◽  
David Jech ◽  
Lenka Klakurková ◽  
...  
Keyword(s):  
High Speed ◽  
Metallic Surface ◽  
Surface Finishing ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Microscope Images ◽  
Safety And Reliability ◽  
High Speed Grinding

In order to increase the peripheral speed of grinding wheels of size of Ø 500 × 18 × Ø 200 mm for precise hard metallic surface finishing from conventional 80 m.s-1 up to 138 m.s-1 while still ensuring their safety and reliability, the critical locations in the grinding wheel were evaluated using the finite element analysis. The microstructure of grinding wheel was revealed using the materialographic techniques and the scanning electron microscope images were recorded in the back-scattered electrons mode. The image analysis was used on recorded micrographs for separation of individual material components, i.e. an abrasive, a binder, and pores, and to extract their geometries and spatial relationships. Subsequently, the influence of different filling agents (Young's modulus of 5, 10, 20, and 40 GPa) was studied, considering both surface dipping and bulk filling treatments.

Characterization of High-Speed Alumina Abrasive Grinding Wheel

2020 ◽  
Vol 405 ◽  
pp. 365-369
Author(s):  
Zina Pavloušková ◽  
David Jech ◽  
Pavel Komarov ◽  
Ivana Ročňáková ◽  
Lucie Dyčková ◽  
...  
Keyword(s):  
High Speed ◽  
Raw Materials ◽  
Initial Mixture ◽  
Grit Size ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Abrasive Grains ◽  
Analysis Technique ◽  
High Speed Grinding

The high-speed grinding wheel can be defined as a self-sharpening composite structural tool composed from abrasive grains held in a specific binder. The main properties of grinding wheels depend on the type of abrasive elements, grit size, grade, binder and the resulting structure, which is influenced by several crucial technological processing steps. Preparation of an initial mixture of abrasive particles together with permanent binder’s mixture and temporary binder followed by pressing and high-temperature sintering is the essential technological step in the manufacturing of high-quality grinding wheels. High demands placed on functionality and quality together with constantly increasing effort to improve existing properties of grinding tools require detailed characterization of all input raw materials. For further research and development is crucial know, how each technological step can influence the final quality of the product. This contribution is focused on the characterization of four alumina abrasives with different grit size and two in chemical composition different binder mixtures which were used for the production of two different high-speed grinding wheels. Initial abrasive grains, binders and metallographic samples of high-speed grinding wheels were evaluated by means of scanning electron microscopy. The porosity of grinding wheels with different binding agents was also determined ustilizing digital image analysis technique.

scholarly journals Development and Power Calculation of a Grinding Wheel Design for Ultra-High-Speed Grinding

2021 ◽  
Vol 248 ◽  
pp. 04008
Author(s):  
Denis Rechenko ◽  
Renat Kamenov
Keyword(s):  
High Speed ◽  
Structural Reliability ◽  
Design Method ◽  
Cutting Speed ◽  
Experimental Tests ◽  
Grinding Wheel ◽  
Power Calculation ◽  
Grinding Wheels ◽  
Ultra High Speed ◽  
High Speed Grinding

Increasing the structural reliability at ultra-high-speed grinding is an important problem because it defines safety of metalworking. The purpose of work is to achieve the cutting speed up to 400-500 m/s by developing a new design of the grinding wheel with the possibility of using different grinding materials. Grinding wheel design for ultra-high-speed grinding was developed based on calculations carried out using the tear design method, which allows determining the maximum possible circumferential speed, and finite element method used to determine the equivalent stresses, plastic deformations, circumferential and radial movements . The possibility of development of a grinding wheel design for ultra-high-speed grinding has been tested experimentally. The developed designs of grinding wheels show may poddibly be used on super high-speed technological equipment for processing of parts made of hard-to-machine materials. Calculations and comprehensive experimental tests of the design of grinding wheels for ultra-high-speed grinding carried pit in this work allow determining the serviceability and the maximum possible cutting speed and provide useful information for the further development of grinding tools.

Simulation and Experiment on the Residual Stress in Super-High Speed Grinding

2010 ◽  
Vol 135 ◽  
pp. 238-242
Author(s):  
Yue Ming Liu ◽  
Ya Dong Gong ◽  
Wei Ding ◽  
Ting Chao Han
Keyword(s):  
Residual Stress ◽  
High Speed ◽  
Element Model ◽  
Residual Stress Distribution ◽  
X Ray Diffraction ◽  
Machined Surface ◽  
X Ray ◽  
High Speed Grinding ◽  
Simulation And Experiment ◽  
Cylindrical Workpiece

In this paper, effective finite element model have been developed to simulation the plastic deformation cutting in the process for a single particle via the software of ABAQUS, observing the residual stress distribution in the machined surface, the experiment of grinding cylindrical workpiece has been brought in the test of super-high speed grinding, researching the residual stress under the machined surface by the method of X-ray diffraction, which can explore the different stresses from different super-high speed in actual, and help to analyze the means of reducing the residual stresses in theory.

Explosion accident analysis of ultra-high-speed grinding wheel

2020 ◽  
pp. 105209
Author(s):  
Yao Wu ◽  
Pan Lu ◽  
Feihong Lin ◽  
Wencheng Bao ◽  
Meina Qu ◽  
...  
Keyword(s):  
High Speed ◽  
Grinding Wheel ◽  
Accident Analysis ◽  
Ultra High Speed ◽  
High Speed Grinding
Sign in / Sign up

Export Citation Format

Share Document