First, superior physical properties
Granite is a very hard material, its hardness is high, usually between six and seven levels, and some varieties can even reach 7-8 levels, which is higher than the general building materials such as marble, bricks, etc. At the same time, the density of granite is large, usually between 2.5 and 3.1 grams per cubic centimeter (or 2.8-3.1 tons/cubic meter), the compressive strength is very high, can reach 150-300Mpa, with good load-bearing and seismic capacity. These characteristics make granite in the application of mechanical bed can withstand greater load and pressure, not easy to deformation and damage.
Second, stable chemical properties
Granite has excellent acid and alkali corrosion resistance and is not easy to be corroded and eroded by chemicals. This means that in the machining process, even if it encounters some corrosive coolant or lubricant, the granite bed can remain stable, and will not affect its accuracy and service life due to short corrosion. Although granite has good acid and alkali corrosion resistance, it is also well maintained after processing, timely treatment of the surface to avoid corrosive liquids stored on the surface for a long time to damage its surface accuracy.
Third, the coefficient of thermal expansion is small
The thermal expansion coefficient of granite is small, which can effectively resist the influence of temperature changes. In the machining process, due to the generation of cutting heat and friction heat, the temperature of the machine tool will change. If the coefficient of thermal expansion of the bed is large, it will cause the deformation of the bed, thus affecting the machining accuracy. The granite bed is different from the cast iron bed, and will not be affected by heat, which can effectively reduce this deformation and ensure processing accuracy.
Fourth, good vibration resistance
Because of its large volume and excellent anti-vibration performance, granite base bed can effectively reduce the interference of vibration to the machining process. This characteristic is especially important in high-speed cutting or precision machining, which can improve the machining quality and extend the service life of the tool.
5. High processing precision
Granite is a natural material with uniform texture and color, which can be processed into various shapes and sizes according to actual needs. Through cutting, planing, grinding, drilling, throwing and other series of processing, granite can be processed into high-precision and high-standard mechanical bed to meet the requirements of modern machining accuracy and stability.
6. Low maintenance cost
The granite bed is not easy to wear and deform during use, so the maintenance cost is relatively low. Only regular cleaning and inspection can keep it in good working condition.
In summary, the choice of granite as a mechanical bed has many advantages, including superior physical properties, stable chemical properties, small thermal expansion coefficient, good vibration resistance, high processing accuracy and low maintenance costs. These advantages make granite bed in the field of machinery manufacturing has a wide range of application prospects.
Post time: Mar-19-2025