In recent years, due to the change of stone design and decoration trend, the antique processing of natural stone has been widely used in the decoration and decoration of various buildings, which is very popular and favored by architects and consumers. In fact, the antique surface of natural stone is not a new processing method that has been developed in recent years. It was already in the 1990s. It is also used very early in China. For example, the “National Grand Theatreâ€, which was started in 2001, has adopted this kind of antique stone.
What is antique stone??
The so-called "antique stone" is the special treatment of natural granite or marble, so that the surface of the stone appears like a natural wave surface or crack after weathering, and the natural wear effect of the stone after long-term use (approximate matt or mercerized) effect). Popularly speaking, it is the processing of natural stone that looks like an old effect after hundreds of years.
Advantages of stone antique processing
The stone antique processing can have the uneven satin silk effect, showing the natural crystal luster of the stone, and has a unique decorative effect; at the same time, it also improves the antifouling performance and waterproof performance of the stone, and can play an anti-slip effect. The antique processing of stone also avoids light pollution in buildings due to specular reflection of light. At the same time, antique stone is easy to repair after wear. At the same time, the color difference of the color is smaller than the polishing process, and it also reflects the value concept of natural environmental protection.
The main tool for natural stone antique processing
The main equipment for the antique processing of stone is the Abrasive Brushe. There are three main types: nylon brush, wire brush and mixing brush.
The nylon brush is made of high-quality silicon carbide and special nylon material. It is firmly fixed on a brush base and is mainly used for antique marble grinding. The wire brush is made of stainless steel wire or low carbon steel wire, and is mainly used for brushing hard stone such as granite. The mixing brush is an abrasive brush made of special nylon and stainless steel wire.
Stone grinding brushes are classified according to specifications: Frankfurt type (horseshoe shape), round shape, Fickert type (brake type), etc.; according to the mesh number: wire brush, 36#, 46#, 60#, 80#, 120# , 180#, 240#, 320#, 500#, etc. Among them, the Frankfurt type is used for hand-held grinding machines, grinding and polishing production lines, ground refurbished machines, etc. in round industrial production; round for small manual polishing machines, floor refurbished machines, etc.; Fickert type is used for automatic continuous grinding machines.
Processing process of antique surface of natural stone
Because the material and structure of granite and marble are different, each has its own characteristics, so the processing method of granite antique stone and marble antique stone is different.
Processing of granite antique surface
Due to the hard texture of the granite, the granite plate is first processed into a rough surface of a fire plate or a thick plate by fire or high pressure water (it can also be processed into a lychee sandblasted surface, etc., but the effect is not very good), pay attention to processing into a rough The matte surface should be rougher than the ordinary singeing board, so as to avoid the slab being too smooth when using the stone grinding brush in the next step, so that the layout surface loses the three-dimensional effect.
Then use a stone abrasive brush for brushing. Note that it is best to use a wire brush first; to perform a rough brush to remove the loose material of the granite plate surface and shape it, which not only has high efficiency, but also has little wear on the equipment and can prolong the grinding. The service life of the brush.
Then, according to the specific requirements of the customer, the polishing brush is used to grind and polish from the coarse to the fine number until the board surface achieves the desired effect and gloss. If the customer wants to achieve a smooth matte effect, it is only necessary to use steel brush, 36# (or 46#), 60# (or 80#), 120# (or 180#) four steps; if it is to achieve mercerizing For the effect, you need to add 240#, 320#, 500# three processes, of course, if all the processes are done, the effect will be better. As for some outdoor panels that do not have any gloss requirements, you can use the wire brush directly.
Marble antique surface processing
Since the materials of different marbles vary greatly, the processing method should be selected according to the difference in the characteristics of each type of marble.
Marble containing more calcium carbonate or cracked holes can be soaked and etched with hydrochloric acid. The soaking time is about 10-20 minutes (depending on the specific stone type); then the steel surface is used to attack the cracks and holes to increase the stone surface. The three-dimensional sense is finally polished and polished by a grinding brush from a coarse number to a fine number until the surface of the board meets the gloss required by the customer.
If it is a marble with more calcite, it can be directly processed by steel brush. It can also be brushed with a three-dimensional surface effect with a wire brush, and then polished by a grinding brush with a coarse number to a fine number, usually using 180 #,240#,320#,500# The grinding brush is just fine. If it is a hard marble, you can increase the previous steps.
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