Ceramic tiles which technical indicators?

A: The appearance are: size deviation (including surface flatness, straight angle, etc.), the appearance of defects, the physical aspects are: water absorption, strength, thermal shock resistance, abrasion resistance, frost resistance, glaze cracking performance, friction coefficient (slip resistance), other areas are: chemical resistance, chemical pollution, radioactivity.

How to measure the water absorption calculated?

A: Currently there is a vacuum method for measuring water absorption method and boiling method, but the principle difference between the two methods, are sufficient to make bricks absorb water, and then re-count method.

Why the low water absorption, the better the intrinsic quality of the product?

A: Water absorption is the most important indicator of a ceramic product, the lower the water absorption degree of sintering of the product described better water absorption is generally controlled by the firing, the products are generally low water absorption firing temperatures relatively high, some firing cycle is president, product density will be larger, low water absorption of the product, whether mechanical strength, abrasion resistance, anti-fouling performance will be better. Such as national standards for water absorption tiles requirements of 0.5%, while our products are controlled at 0.1%, glazed wall of water absorption national standard of 10 to 20 percent, while our control in 14% of the product within.

Surface gloss products is how much?

A: The national standard is 55 degrees, the average crystallite stone products is not less than 98 degrees, glazed bricks thrown nearly 95 degrees. Polished gloss is an important indicator, but also a reflection of the intrinsic quality of the product, which is formulated products and raw materials, the firing cycle, polishing processing.

Chemical resistance of ceramic products is how to classify?

A: GB chemical resistance of ceramic products will be divided into three levels namely Class A, B grade, C grade, A grade best corrosion resistance. Generally we see the inspection report, such UHA level, ULA level, GLA level, etc., in front of the two letters is a detection method.

The wear resistance of ceramic products is how to classify it?

A: The national standards for abrasion resistance of ceramic products are divided into two areas: glazed tile products that are divided into 6: 0, 1, 2, 3, 4, 5, 0 worst, 5 the best grade; unglazed products with wear volume says: for example GB for tiles require less than 170mm3, the general volume of the lower, the better, our standards for 150 mm3.

How to detect surface roughness?

A: Generally with the level of foot and feeler testing, national standards are generally represented by%.

How to detect the strength of ceramic products?

A: The general use of flexural strength testing machine to detect, into breaking strength and modulus of rupture, the former unit is N, the latter unit is MPa.

Generally the greater the intensity of the intrinsic quality of the product value, the better the product, the less prone to breakage and other issues, such as the national standard for tiles require modulus of rupture is not less than 35MPa, particularly high special products is greater than 40MPa, glazed national standard is not less than 15MPa, particularly high special products is greater than 25MPa.

How to define the surface hardness of brick and grading, surface hardness of how our products?

Answer: According to the relevant national standards, the surface hardness is divided into 10 blocks, one of the softest (talc), 10 the hardest (diamond). Called surface Mohs hardness, national standards for six, seven indicators of our company.

Building materials, radioactive elements are there? What is the current testing standards?

A: The building materials mainly for radioactive elements Ra (Ra), Th (thorium), K (potassium) three elements, according to the current standards are "GB6566-2001- building materials radionuclide limits" to detect, just after the standard test is a Class A product, its use is unrestricted, meaning that it is safe for humans, according to the National authoritative institution building tiles showed 92% of the products meet class A, only 8% of the product as a Class B, basically no class C. This test must be used professional equipment in specialized testing station γ spectrometer detection, testing laboratories have at least CAL, CMA, CNAL certification report before the letter.

Currently radioactivity of building materials is how to classify?

A: According to "GB6566-2001- building materials radionuclide limits", building materials and products according to their different specific activity radioactive C size, divided into A, B, C categories. Class A decorative materials IRa≤1.0, Ir≤1.3, marketing and use of unrestricted; Class B decorative materials IRa≤1.3 Ir≤1.9, can not be used for Class I civil interior surface, but can be used for Class I internal and external finishes and all other civil buildings outside, external finishes; class C decoration materials: external finishes and can only be used for other purposes outside buildings. Which is expressed as internal exposure index IRa, Ir expressed as external exposure index.

Why no radioactive tiles worries?

A: Our company is a manufacturer of ceramic integrity and responsible, the industry's first implementation of ISO14001 management and actively carry 3C. In order to ensure the safety of radioactive tiles, the company invested a lot of money each year for testing of raw materials, the company has radioactive material for each test, prohibit the use of substandard materials.

Why would suck dirty brick? How to prevent?

A: This is an internal structural characteristics of the brick of the decision, the reasons for the high temperature ceramic products in the sintering process can produce complex physical and chemical changes, such as carbonate decomposition, decomposition of organic matter, sulfate decomposition, low communion Spawn, and will leave some of the pores in the green body, small Cave and crystal phase transition of micro cracks, these small "defects" will be exposed after polishing, surface dust and other debris will show infiltrate to smoke pollution. At present, there are preventive measures: ① to reduce water absorption and improve the degree of glass, quartz particle size decreases. ② antifouling surface waxing. Also polished product itself will affect the color of the smoke pollution products, such as white or light-colored product is not dirt.

National standards for stain resistance is how the requirements?

A: According to the national standard of ceramic products will stain resistance is divided into five namely: 1, 2, 3, 4, 5, where the higher the level, the better the product contamination. For glazed tiles require no less than three aspects, unglazed tiles GB absence of detailed requirements, requiring only the reporting level.

How to determine the slip resistance of ceramic products? Polished slip it?

A: slip resistance of ceramic products are used to represent the surface friction coefficient, the greater the slip resistance coefficient, the better the product is generally dry in about 0.7, about 0.45 wet. Due polished, smooth surface, a large contact area with the sole, increase friction when walking, and therefore non-slip performance is quite reliable.