Among all stone finishing treatments, the brushed surface has the highest friction coefficient. At present, there are two main processing methods and decorative effects in the mainstream wire drawing surface treatment process.
1: Polishing before wire drawing;
2: Directly wire drawing on the basis of the original machine cut surface.
According to the differences in aesthetics and decorative requirements, each of these two decorative processing methods has its own advantages. The polished wire drawing surface is beautiful and easy to clean, but the friction resistance effect is not as good as the second type; The friction resistance effect of the latter type of wire drawing surface is the best among all stone finishing treatments. Moreover, the former has a higher processing cost than the latter. If the brushed surface is used as a flooring board on the construction site, the latter is the preferred choice. If the brushed surface is simply used as a decoration effect in the range of use of facade boards, the former is generally chosen.
1、 Processing parameters of wire drawing surface:
The depth and width of the groove on the drawing surface determine the difficulty and speed of processing the drawing surface. In general, the depth of the groove is 1.5mm to 2mm, and the width of the groove is 1cm, 2cm, 2.5cm, 4cm, and 5cm, respectively. Among them, the groove with a width of 1 centimeter has the highest processing cost.
2、 Technical factors of wire drawing surface:
The hardness and density of the selected blank board for a good wire drawing surface must be high in order to produce high-quality wire drawing panel materials. Hardness determines the service life of wire-drawn panel materials, while density determines the processing effect of wire-drawn panel materials. Of course, when making wire drawing surfaces, the hardness and sharpness of the machine blade also play a decisive role in the final wire drawing effect.
3、 Hardness standard for wire drawing surface:
3.1 The dry compression strength must reach 229;
3.2 The hardness of the stone must reach a Shore hardness of 93 or above;
3.3 The machine speed must reach 1700 or above;
3.4 The hardness of the cutting head must reach a Mohs hardness coefficient of 9.3 or above;
The thickness of 3.5 rough stone slabs should reach 2.2 centimeters or more;
The sandblasting treatment of natural stone is a stone surface processing method that uses abrasive materials such as angular diamond sand, quartz sand, and river sand to impact the surface of the stone under the influence of compressed air (or water), resulting in a similar effect to glass frosting.
The application range of stone sandblasting treatment is very wide. It can not only be used for processing natural stone products such as thin plates and specification boards, but also for processing irregular stones such as lines, columns, railings, steps, and corners. Moreover, sandblasting processing is also widely used in stone carving.
Of course, stone sandblasting is not only used for surface processing as a decorative surface but also for stone repair. For some installed stones, if there are serious irreparable stone lesions, surface sandblasting can also be used for treatment. The process of stone sandblasting: The process of stone sandblasting is very simple. If it is a full area sandblasting, simply sandblast the roughly ground stone slab directly; If it is local sandblasting, the parts that do not require sandblasting treatment must。
There are currently two main methods for stone sandblasting, one is manual sandblasting, and the other is machine sandblasting. Manual sandblasting is usually done using dry sandblasting machines, while machine sandblasting can be divided into two categories: dry sandblasting machines and liquid sandblasting machines. Dry sandblasting machines can also be divided into suction type and pressure type. Suction-type dry sandblasting machine: The suction-type dry sandblasting machine is powered by compressed air and forms a negative pressure inside the spray gun through the high-speed movement of the airflow.
In a suction-type dry sandblasting machine, compressed air provides both material supply power and acceleration power. Press-in dry sandblasting machine: Press-in dry sandblasting machine is powered by compressed air, and the working pressure is established by compressed air in the pressure tank. The abrasive is pressed into the sand conveying pipe through the sand outlet valve shot out through the nozzle, and sprayed onto the processed surface to achieve the expected processing goal. In a press-type dry sandblasting machine, compressed air provides both material supply power and acceleration power. Liquid sandblasting machine: Compared to dry sandblasting machines, the biggest feature of liquid sandblasting machines is that they effectively control dust pollution during sandblasting processing and improve the working environment of sandblasting operations. The liquid sandblasting machine uses a grinding fluid pump as the feed power for the grinding fluid, and through the grinding fluid pump, the evenly stirred grinding fluid。
Inside the spray gun, compressed air accelerates the grinding fluid entering the spray gun and is sprayed out through the nozzle to achieve the expected processing purpose on the processed surface. In a liquid sandblasting machine, the grinding fluid pump serves as the feed power and compressed air serves as the acceleration power.
They also attach great importance to the expansion and extension of the original processing surface. For example, in stone sandblasting, river sand, sea sand, quartz sand, diamond sand, etc. were originally used as abrasives. Later, other materials were also used as abrasives, all with different surface effects.
