Processing

Processing

Raw material from nature

Extraction of natural stones.

Onyx from Pakistan
Slate from Portugal
Limestones from Spain
Diorites from China
Quartzites from Brazil

Processing

There are two main methods used to cut blocks into dimension boards.

Steel - sand gate
An eccentrically mounted lifting arm is attached to an oversized flywheel.
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
Steel ropes equipped with industrial diamonds, which are in rotation, are placed over the block. With the addition of water, they split the block.

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.
With this technique it is now possible to cut thinner panels up to 1.2 cm thick, from which floor panels can be cut. This has a price disadvantage compared to the Taglia Blocki because you have to cut the slab again into floor slabs, but it guarantees that the floor slabs and slabs from which the stairs are cut are the same color.

This method is very effective and fast. Depending on the material, the diamond wire saw takes 11-30 hours to cut the block.
Taglia Blocchi...
...is a machine to produce floor tiles and skirting boards effectively and economically.

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.

Example of a worktop

Computer controlled manufacturing

Produce milling

Finished countertop

Example of a worktop

Computer controlled manufacturing

Produce milling

Finished countertop

Image
Natural stones from all over the world.
Image
Natural stones from all over the world.
Informations
Natural stone is a product of nature. The natural stone may vary in color and texture. All photos on our website serve as examples and samples. Deviations from the photos and samples provided do not entitle the customer to make a complaint. We are happy to make a material selection with you before the start of production. The naturalness is unique and can not be copied or imitated..
© Copyright 2021 A. Hoffmann - Natursteine
Information
Natural stone is a product of nature. The natural stone may vary in color and texture. All photos on our website serve as examples and samples. Deviations from the photos and samples provided do not entitle the customer to make a complaint. We are happy to make a material selection with you before the start of production. The naturalness is unique and can not be copied or imitated.
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