| Grinding of compression springs represents the most cost intensive step in the manufacturing process. Stainless wire qualities and vanadium alloy qualities with low-spring loads result in increased grinding times, short dressing intervals, as well as increased grinding wheel consumption. Th. Leisse GmbH & Co KG, Germany, one of Europe�s leading manufacturers of grinding wheels for the spring industry, has recently introduced new grinding wheels for NIRO springs.
The new generation of grinding wheels is based on sintered aluminium oxide. A new bonding system makes it possible to manufacture grinding wheels with a pore volume being increased by 15 to 25%. The sintered aluminium oxide grinding wheels with structures marked 10 - 13 show the following significant advantages:
- Dressing cycles: 4 to 10 fold longer;
- Shorter grinding time: 20 to 30%;
- Increased service life of wheels: 20 to 50%
An optimised work-piece quality is achieved when using the new grinding wheel generation. It is considerably less difficult to adhere to the fixed tolerances (e1, e2, L0).
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