Product category:
Abrasive grinding wheels, abrasives
News Release from: Tyrolit | Subject: 'Strato-Ultra' creep feed grinding wheels
Edited by the Manufacturingtalk Editorial
Team on 25 July 2007
Vitrified wheels raise creep feed
grinding output
Highly porous, vitrified wheels for creep feed grinding hold a profile more consistently and longer, bringing a productivity gain of 30-50% when compared with conventional wheels.
Tyrolit claimed that its range of highly porous, vitrified wheels for creep feed grinding will bring a 30-50% productivity gain when compared with the performances of conventional wheels Tyrolid said that the wheels will bring users dramatically reduced abrasive machining costs
This article was originally published on Manufacturingtalk on 16 Nov 2005 at 8.00am (UK)
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Tyrolit's 'Strato-Ultra' creep feed grinding wheels use a high strength bond that allows the amount of vitreous material to be reduced.
In turn, the bond lowers the abrasive grain content .
The results are, as follows.
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The UK subsidiary of Tyrolit has introduced a range of training courses to support its customers in applying best practices when using bonded abrasives.
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* An increase in pore volume.
* Increase in average distance between individual grains.
* Creep feed wheel holds profile better and for longer.
When creep feed grinding, friction between the wheel and workpiece is lower as the wheel presents fewer cutting edges in contact with the workpiece.
There is also less bond material in the contact zone, which can inhibit chip removal and cause additional friction.
As a consequence, the amount of heat generated is reduced, forces on the component are lower, and the power drawn by the drive motor is decreased.
The above benefits have the following effects.
* Improve component quality - dimensionally and metallurgically.
* Speed grinding cycle times.
* Produces a more efficient and economical machining process.
In spite of their high porosity, the wheels exhibit considerable mechanical strength, even for large diameters and wheel widths.
Consequently the wheels can be used at relatively high peripheral grinding speeds up to 63m/s, without the need for additional bore reinforcement.
The wheels are especially well suited to VIPER grinding of gas turbine engine components, with or without continuous dressing.
* Aerospace applications - Tyrolit continues to recommend that fused aluminium oxide (AlOx) grain is the preferred type for most aerospace and turbine applications.
While there can be some benefits from using sintered grain in certain applications, the negative effects of high wheel cost, high diamond roll wear and poor process capability when producing deep profiles, results in a majority of users staying with fused-grain wheel types.
The case for fused AlOx grain is further strengthened by Strato-Ultra itself, as the extended wheel life and lower grinding forces allow users to realise most of the benefits normally associated with sintered-grain wheels, without the above disadvantages.
Strato-Ultra wheels are environmentally friendly to produce, as the firing temperature is less than for other creep feed bonds and the overall firing time is reduced, resulting in reduced energy consumption during manufacture.
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