Evaluation of Factors Controlling CBN Abrasive Selection for Vitrified Bonded Wheels

Hitchiner, Mike P.; McSpadden, SB

doi:10.4028/www.scientific.net/kem.257-258.267

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8. The maximum wear depth was about 18 µm corresponding to an average G-ratio of 130, which was lower than reported typical value of 300 [9]. It should be noted that the G-ratio value here was calculated from the overall wheel wear, which included the wear in the initial transient and subsequent steady stages.…”

Section: Resultsmentioning

confidence: 80%

See 1 more Smart Citation

Experimental Study on Grinding of a Nickel-Based Alloy Using Vitrified CBN Wheels

Shi

Elfizy²,

St-Pierre³

et al. 2011

AMR

View full text Add to dashboard Cite

An experimental study is reported on the grinding of a nickel-based alloy using vitrified CBN wheels. This work was motivated by switching the grinding of fir-tree root forms of jet engine blades from creep-feed grinding with conventional abrasive wheels to vitrified CBN wheels. The objective is to explore process limits and practical grinding parameters for judging the switch in terms of overall costs and productivity. Straight surface grinding experiments were conducted with water-based fluid on rectangular blocks at a fixed wheel speed vs = 45 m/s, various depths of cut a = 0.05 - 1.0 mm, and workspeeds vw = 2 - 40 mm/s. Grinding power, forces, surface roughness, and radial wheel wear were measured. Specific material removal rate of 8 mm3/(mm.s) was reached in rough grinding using a wheel dressed for achieving surface roughness Ra = 0.8 µm in finish grinding. It was found that shallow depths of cut combined with fast workspeeds, or less creep-feed modes, are more suitable for achieving high material removal rates with vitrified CBN grinding. Rough grinding is restricted by high grinding temperatures with newly dressed wheels and by chatters with worn wheels.

show abstract

Section: Resultsmentioning

confidence: 80%

“…In addition, vitrified CBN grinding can be used with water-based fluid without significant sacrifice of wheel life. Typical specific material removal rates of 2 -4 mm 3 /(mm.s) and G-ratio of around 300 have been reported in successful industrial applications [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Grinding of a Nickel-Based Alloy Using Vitrified CBN Wheels

Shi

Elfizy²,

St-Pierre³

et al. 2011

AMR

View full text Add to dashboard Cite

show abstract

“…Multilayer vitrified CBN wheels are also available as a replacement for conventional wheels. CBN is not only harder than conventional abrasives but has excellent heat conduction properties resulting in lower grinding temperatures [1,36].…”

Section: Grinding Wheels and Abrasivesmentioning

confidence: 99%

Towards High Productivity in Precision Grinding

Rowe

2018

Inventions

View full text Add to dashboard Cite

Over the last century, substantial advances have been made, based on improved understanding of the requirements of grinding processes, machines, control systems, materials, abrasives, wheel preparation, coolants, lubricants, and coolant delivery. This paper reviews a selection of areas in which the application of scientific principles and engineering ingenuity has led to the development of new grinding processes, abrasives, tools, machines, and systems. Topics feature a selection of areas where relationships between scientific principles and new techniques are yielding improved productivity and better quality. These examples point towards further advances that can fruitfully be pursued. Applications in modern grinding technology range from high-precision kinematics for grinding very large lenses and reflectors through to medium size grinding machine processes and further down to grinding very small components used in micro electro-mechanical systems (MEMS) devices. The importance of material issues is emphasized for the range of conventional engineering steels, through to aerospace materials, ceramics, and composites. It is suggested that future advances in productivity will include the wider application of artificial intelligence and robotics to improve precision, process efficiency, and features required to integrate grinding processes into wider manufacturing systems.

show abstract

“…It is suitable for high volume applications of tight tolerances and smooth surfaces. In addition, vitrified CBN grinding can be used with water-based fluid without significant sacrifice of wheel life [5].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Grinding Fir-Tree Root Forms Using Vitrified CBN Wheels

Shi

Elfizy²,

Attia

2014

AMR

View full text Add to dashboard Cite

An experimental study was undertaken to explore the conditions and performance on rough and finish grinding fir-tree root forms of turbine blades made of a nickel-based alloy using vitrified CBN wheels and water-based grinding fluid. This work was motivated by switching the grinding of fir-tree root forms from grinding with conventional abrasive wheels to vitrified CBN wheels for reducing overall production cost and enhancing productivity. Grinding experiments were conducted to measure grinding forces, power, surface roughness, and stress near the blade roots under various dressing and grinding conditions. Wheel re-dressing life in terms of the total number of good parts ground between dressing was tested with the condition producing the maximum material removal rate while satisfying preset part quality and process requirements. It was found that the maximum material removal rate achievable in rough grinding was restricted by the stress limit and the wheel re-dressing life was dominated by the radial wheel wear limit. The targeting part quality and process requirements were achieved. It was proved that vitrified CBN grinding process is feasible and very promising to machine fir-tree root forms.

show abstract

Evaluation of Factors Controlling CBN Abrasive Selection for Vitrified Bonded Wheels

Cited by 5 publications

References 0 publications

Experimental Study on Grinding of a Nickel-Based Alloy Using Vitrified CBN Wheels

Experimental Study on Grinding of a Nickel-Based Alloy Using Vitrified CBN Wheels

Towards High Productivity in Precision Grinding

An Experimental Study on Grinding Fir-Tree Root Forms Using Vitrified CBN Wheels

Contact Info

Product

Resources

About