Jinan Black Granite in metrology
jinan black granite in metrology
Due to its unique properties,jinan black granite www.cnponchotowels.com in recent years, has been used extensively in the field of measuring instruments, both for traditional ones (surface plates, parallels, set squares, etc…), as well as modern ones: CMM machines, physic-chemical process machine tools.
Suitably lapped black granite surfaces are not only extremely precise but also ideal for use in conjunction with air bearings.
The reason of the choice of Jinan black granite in manufacturing of precision www.cnponchotowels.com units are the following:
DIMENSIONAL STABILITY: black granite is a natural aged material formed over millions of years and therefore displays great internal stability www.cnponchotowels.com
THERMAL STABILITY: the linear expansion is much lower than the steel or cast iron oneswww.cnponchotowels.com
HARDNESS: comparable to good-quality tempered steel www.cnponchotowels.com
WEAR RESISTANCE: instruments last longer www.cnponchotowels.com
ACCURACY: the flatness of the surfaces is better than the one obtained with traditional materials www.cnponchotowels.com
RESISTANCE TO ACIDS, NON-MAGNETIC ELECTRICAL INSULATION RESISTANCE TO OXIDATION: no corrosion, no maintenance www.cnponchotowels.com
COST: working the granite with state-of-the-art technology prices are lower www.cnponchotowels.com
OVERHAUL: Eventual servicing can be carried out quickly and cheaply www.cnponchotowels.com
