In a hotel's grand entrance, many guests are captivated by the elegant marble flooring and the intricate sandstone carvings on the walls. These decorative stones contribute to an atmosphere of sophistication and timeless beauty. But have you ever wondered how these natural stones are transformed from rough blocks into such refined materials? Let’s explore the key processes involved in stone processing.
First, **sawing** is the initial step in shaping raw stone. This process involves cutting large blocks of natural or artificial stone into manageable slabs using specialized sawing equipment. Common tools include frame saws, disc saws, and wire saws. For harder stones like granite or larger slabs, frame saws are typically used. They operate by feeding water mixed with iron sand or silica sand onto the blade, which then cuts through the stone via friction under pressure.
Disc saws, on the other hand, are ideal for smaller, medium-hardness stones. These machines feature a large circular blade made of diamond or cemented carbide, which cuts by impacting and grinding the rock into smaller pieces. The blades can range from 1.25 to 2.5 meters in diameter and are capable of cutting slabs up to 1.2 meters high.
Once the stone is cut, **surface processing** comes into play. The freshly sawn surfaces often lack smoothness and require further refinement. Surface treatments include rough grinding, fine grinding, polishing, flame treatment, and chiseling. The grinding process is usually divided into five stages: coarse, semi-fine, fine, and finally polishing. Tools like handheld grinders and automatic bridge grinders are used depending on the size of the stone.
Polishing is the final step that enhances the stone’s luster and brings out its natural color and pattern. There are several polishing methods used in the industry:
1. **Felt and oxalic acid**: Best for soft marbles like white marble, snow white, and peach red.
2. **Felt and alumina**: Suitable for harder stones such as sunset, ink jade, and purple bean paste.
3. **White corundum grinding**: Ideal for stones like gold jade and Dandong green, which don’t respond well to the first two methods.
Another technique is **flame treatment**, where a high-temperature flame is used to burn the surface of granite, restoring its natural texture. After this, the surface is brushed to remove debris and then treated with a mixture of glass slag and water or manually ground with nylon fibers to achieve the desired finish.
Finally, **chiseling** is a method used to refine the surface of stone cut by a gang saw. Once processed, the finished marble and granite slabs are cut into specific sizes using a small-diameter diamond circular saw.
Electric mosquito swatter is a kind of small household appliance products, mainly used to kill mosquitoes, flies, moths and other insects. It through the electronic high voltage technology, the use of 1850V high voltage to effectively destroy these pests, has the advantages of practical, convenient, no chemical pollution, safety and health, so it is widely welcomed, become the summer best-selling small household appliances products. The electric mosquito bat is usually composed of three layers of metal mesh, the outer metal mesh and the middle layer are not directly connected, and maintain a certain distance. When the switch is pressed, the direct current in the battery passes through the oscillation circuit and the boost circuit, eventually reaching a high voltage above 2000 volts. This design allows the mosquito to be waved through the electrostatic field and electrical grid discharge to destroy the insect, without causing harm to the human body.
The main advantages of electric mosquito swatting include:
Efficient pest control: can kill a variety of insects in a short time, including mosquitoes, flies and moths.
Safety and health: the use of high voltage electricity instead of chemical agents, to avoid chemical pollution, more environmental protection and safety.
Portable and convenient: compact size, easy to carry and use, suitable for home and outdoor use.
No chemical pollution: will not produce harmful chemicals, more friendly to the environment and human body.
The following points should be noted when using an electric mosquito swatter:
Avoid using in humid environment, so as not to affect its high pressure effect.
Keep the electric mosquito bat dry to avoid short circuit or damage caused by moisture.
Avoid using in flammable and explosive environments to prevent accidents.
Children should use under adult supervision to prevent accidental handling or risk of electric shock.
In short, with its high efficiency, safety and environmental protection characteristics, the electric mosquito has become an ideal choice for summer pest control.
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Guangdong Dp Co., Ltd. , https://www.dp-light.com