Tiles vary greatly in price due to different brands, processes, and materials. Consumers must not blindly believe in high-priced goods when purchasing tiles, and they must not neglect others because of greediness and low-cost. The true method of purchasing can be affected by price factors, and it can be selected as a commodity with high quality and low price.
Marco Polo Tiles
1, see tile density and hardness, quality.
Can be tapped, the sound crisp and clear ceramic tile density and hardness, good quality. If you tap the floor tile with your hand, if the brick emits a “squeaky, squeaky†sound, it indicates that it has not enough sinter strength and texture. If a slight "click" sounds, its texture is harder than the previous one.
2, see the tile water absorption.
The lower the water absorption rate, the higher the intrinsic stability of the tiles, and the more suitable the space with high moisture or moisture content. This will not cause black spots and other problems. The water droplets are on the back of the tile, and the tiles that have been soaked slowly after the water has spread are dense and are considered top grade.
3, look at the color of the tiles.
You can use a hard object to scrape the tile glaze. If you leave a mark, it indicates poor quality. Look at the color of the tile is not clear, with the naked eye to see if there are no pinholes, the pinhole is easy to accumulate dirt.
4, see the flatness of the tiles.
The sides are straight, easy to spread and effective. Take out any four tiles from the packing box, and compare them on a flat surface. Whether the four bricks are even and whether the tiles are diagonally in place or not.
Then tap the surface of the tile with the palm of your hand and listen to the sound: The sound of a good tile is relatively low: the tiles that are not good are bright and have obvious reverberation. Of course, judging the sound from the sound is relative. However, the first method of comparison can not be ignored, the biggest difference between domestic and imported bricks is mainly in the specifications of tile products.
5, see the glazed brick.
Tile surfaces should be smooth and delicate; high-gloss glazed tiles should be crystal clear and glossy, and matt and semi-gloss glazes should be soft and reflective. You can try to scratch the tile surface with a hard object. If there is a scratch, it means that the glaze is not enough. After the glaze on the surface is polished, the brick surface will be easily contaminated and difficult to clean. Secondly, to see if the product size is standard, diagonal lines can be measured with calipers. Irregular tiles will not form a straight line when paving, resulting in unsightly appearance. Third, see the deformation, can be observed directly with the naked eye, look at the product side straight flat, so that the product deformation is small, easy construction, paving the brick surface flat and beautiful. Look at the pattern four, the pattern of color should be delicate, realistic, there is no obvious defects such as lack of color, broken line, dislocation.
6, see the packaging.
First look at the factory name, site and trademark, so as not to buy "three no" products. Second, look at the product quality level and the size of the water absorption. In general, the lower the water absorption rate, the higher the strength and the better the frost resistance. If users purchase ceramic tiles mainly for floor covering or for outdoor wall surfaces, they must purchase products with low water absorption, such as porcelain tiles or enamel tiles.
If users purchase bricks mainly for interior walls, such as kitchen and bathroom walls, products with higher water absorption rates, such as ceramic bricks, can be used. However, it should be pointed out that these products have relatively high requirements for resistance to cracking, thermal shock resistance, pollution resistance and chemical resistance. Third, look at the friction properties of the product. If users purchase ceramic tiles for floor covering, they need to check the friction coefficient and wear level of the products.
7, see the surface quality.
The first thing to look at is whether or not the colors are pleasing to the eye and meet their own aesthetic tastes. Secondly, about 1 meter away from the sample, in a certain light conditions, observe whether the sample lacks glaze, cracks, smoke, falling dirt, glaze, spots, bumps and other surface defects; about 3 meters away from the sample, observe the surface of the product Color difference in order to get a rough grasp of the product's gloss. Third, gently tapping the sample with your hand or a hammer. If there is a metallic echo, it indicates that the product structure is rich; if there is stuffy sound, it indicates that the product may have structural delamination defects.
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One of the most fascinating materials of our time is polycrystalline cubic boron nitride PCBN - the second hardest material after diamond. At CeramTec, PCBN is used as a cutting material from which indexable inserts are manufactured for machining.
PCBN is produced synthetically and is a "composite material" made of cubic boron nitride and a mostly ceramic binder phase. The ratio of cBN to binder content and the cBN grain size determine the application.
PCBN cutting materials are used in the machining of hard and/or highly abrasive workpiece materials. The high hardness and the extremely high hot hardness (up to temperatures above 1,000°C), the edge stability and inertness towards ferrous materials as well as the basically good chemical resistance give CBN cutting materials a high potential for use in machining. On the cutting material side, a distinction is made between high- and low-cBN cutting material grades.
PCBN (Polycrystalline Cubic Boron Nitride) blanks for cutting tools are composite ultrahard materials sintered by polycrystalline CBN and carbide alloy under ultra-high pressure and high temperature conditions. They combine the hardness, wear resistance, and thermal stability of CBN with the impact resistance and toughness of carbide alloy. PCBN blanks are highly suitable for cutting ferrous and non-ferrous metals with high hardness.
PCBN Composites and Inserts
Hans Super Abrasive Diamond Tool Co.,Ltd , https://www.hansuperabrasive.com