Surface plate tools
- Just contact us with your specifications for a quotation.
- SURFACE PLATES are made of black granite which is stronger and denser than light colored granite, more stable, and wears longer.
- The granite properties determine the stiffness of the granite and accuracies can be guaranteed with less thickness than other types of granite.
- This translates to less freight and handling whenever the plate is shipped or moved.
So granite is applicable to the works of industrial production and laboratory measurement.
- For high precision operations in temperature controlled gauging rooms and metrology departments
- For general quality control use
- For shop work and production checking
The main mineral components of granite include pyroxene, plagioclase, a little olivine, biotie and trace magnetite. It is precise in structure with black luster and through hundreds of millions years aging, it is of uniform texture, nice stableness, high intensity and rigidity, and can maintain a high precision under heavy weight. So granite is applicable to the works of industrial production and laboratory measurement.
The precision of the granite surface plates is in line with the standards of advanced countries.
Tolerance of planeness: Standard JB/T7975-1999
Grade 000 = 1 × ( 1+d/1000 ) μm
Grade 00 = 2 × ( 1+d/1000 ) μm
Grade 0 = 4 × ( 1+d/1000 ) μm
Grade 1 = 8 × ( 1+d/1000 ) μm
( "d" is the diagonal mm ) (The measuring temperature is normally 20±0.5°C )
Compressive strength: 245-254N/mm2
Elastic modulus: 1.27-1.47N/mm2
Lindar expansion coefficient: 4.61 × 10-6/°C
Shore scleroscope hardness: more than Hs70
Good relationships are founded in trust, built on shared knowledge and developed over time. We pride ourselves on the strong relationships we forge with our clients. And clients engage FORTUNE Machinery for many reasons, but all involve our exceptional people, our can-do approach and our continual focus on the delivery of practical solutions.
Our clients also choose us because:
•We have two companies and we are the China's first and largest companies in this field so we can get much more competitive prices for the buyer.
•Excellent engineers with over ten years experience; Best designers can offer you reasonable drawings to meet your all kinds of special requests.
• And also, we have the best forwarder team who can supply you best price and service
As a manufacturer, we will supply you a most favorable price and top-quality service
Your inquiry is highly appreciated.
We can finish your products within few days.