There are two main methods used to cut blocks into dimension boards.
Steel - sand gate
A rectangular frame, equipped with steel blades arranged side by side and interlocked, is set into a horizontal pushing and pulling motion by the flywheel.
Above the frame are hoses that constantly feed a mixture of water, steel chips and quartz sand.
This mixture is constantly pushed back and forth by the interlocking of the steel blades and thus slowly cuts through the block. Depending on the hardness of the rock, it takes about 6 days and nights to cut the block.
Often the blades run a little, so that one gets slight elevations on the sawn surface. These must then be straightened with high grinding and polishing effort. This technique is already being replaced by the diamond wire saw in many factories.
Diamond wire saw
These are attached one behind the other. The distance between the ropes depends on the desired panel thickness. One machine can guide up to 80 ropes.
The most common thicknesses are: 2 cm, 3 cm 4 cm and 6 cm.
This method is very effective and fast. Depending on the material, the diamond wire saw takes 11-30 hours to cut the block.
Diamond-tipped round blades, mounted on an axis and arranged one behind the other, cut the block into strips. A horizontally mounted diamond blade separates these from the block and places them on another production line for further processing - grinding, polishing and formatting.
The cutting depth is limited by the bearing axis of the diamond blades.
By improving the technology, the maximum depth achieved could be increased from 40.5 cm to approx. 60.5 cm.
As a result, it is now possible to cut floor formats of 60 x 60 or 60 x free lengths of 90 - approx. 1.20 m.
However, these are limited by the specific weight.a slab of 60 x 60 x 1 cm weighs approx. 11 kg.
The subsequent trades for laying these plates must be taken into account.