Knowledge of stone blocks
Writer： admin Time：2011-01-17 21:22 Browse：℃
1. The concept of blocks: cubes or cuboids with certain specifications and no cracks, available
is used to process blocks or irregular-shaped stones.
2. The production process of blocks:
prospecting → geological evaluation → trial mining → mass production → wool → block
3. Due to different shaping methods, blocks are divided into:
(1) Saw-faced blocks: All six sides are sawn.
(2) Split face block: Only part of the six faces is sawed.
4. The shape of the block: square or rectangular hexahedron.
5. The use of blocks: one time for processing large slabs, one for processing special shapes (arc plates, cylinders, flower threads) and other crafts.
6. Blocks are divided into:
(1) Imported blocks: foreign-produced marble, granite (and a kind of sandstone);
(2) Domestic blocks: Chinese made, marble and granite;
7. The sawing method for processing blocks into plates (ie large plates):
(1) Big sand saw: (imported and domestically produced) is mainly used for sawing big slabs. (Above 1.2 meters high)
(2) Circular saws (imported and domestically produced) mainly saw 60, 70, 80 and 90 boards.
8. Classification of sheet thickness:
(1) Thin plate: thickness is below 12mm, thin plate is generally used scrap or scrap
Saw and cut small blocks, currently: the domestic common size is 305*305*10mm;
(2) Thick plate: The thickness of the plate is above 12mm. The thickness of the plate commonly used at home and abroad is
20mm (actually 18-20mm, the thickness of domestic panels is different); the thickness of panels used for dry hanging on external walls should be 25-50nn.
9. Plate rate: (also called the rate of output of blocks) refers to the number of 2cm-thick boards per cubic meter of blocks.