There are many types of wear-resistant materials and a wide range of uses. A large-scale high-tech industrial cluster is being formed, which has very broad market prospects and extremely important strategic significance. The following small series introduces you to the relevant knowledge of wear-resistant materials.
What are the wear-resistant materials on the market:
1. Cast stone: The cast stone lining is made of natural rock diabase or basalt with a small amount of additional materials. It is a kind of non-metallic wear-resistant fine-grained grain made by high-temperature melting, casting molding, and crystal annealing. The physical and chemical properties of the material are as follows: flexural strength 600MPA, flexural strength 65MPA, bulk density 2.9-3.0 g / m2, abrasion degree 0.09. Cast stone liner is an early-developed wear-resistant material, the technology is outdated and even It is said that the product has been eliminated from the market. The reason is that its wear resistance is far less than that of silicon carbide, alumina, and zirconia ceramics. In addition, the cast stone lining is fragile, the wear resistance layer is thick, and other factors. Obsessed with its long-term application. But the cast stone lining board still has its place in today's anti-wear material market, which is inseparable from its low price, convenient construction, and China's immature market.
2. Polymer lining: There are many types of polymer lining, including polymer polyethylene lining, polyurethane lining, oily nylon lining, rare earth nylon lining, A3 lining, etc. Its physical and chemical properties are as follows: tensile strength 98-107MPA, bending strength 152-176MPA, bulk density 1.16-1.18 g / m2, friction coefficient 0.4-0.6
The polymer lining board is different from the cast stone, silicon carbide, alumina, zirconia ceramics in wear resistance mechanism. The polymer lining board mainly uses its low friction coefficient from lubrication to reduce the friction resistance between each other, so its hardness is not high, which is typical The principle of "softness to overcome rigidity". The main component of this type of material is organic matter, so the use temperature cannot exceed 100 ℃, which limits its application to a large extent
3. High chromium cast iron: Adding C element to steel will increase its hardness, while adding chromium element to increase its hardness, 45 # carbon steel hardness is about HB200. High chromium cast iron is widely used in parts with relatively high impact and relatively low wear in mines. At the same time, many ball mill grinding balls are also made of high chromium cast iron. Its composition is as follows: carbon and chromium (C is 3.1-3.6%, Cr content is 20-25%) nickel (its role is to increase the hardenability of high-chromium cast iron) tungsten (its role is to refine grains and increase hardness , Increase wear resistance) rare earth compound modifier (0.2-0.5%)
4. Manganese steel alloy (16mn): It is an alloy material of rare earth molybdenum, vanadium, titanium, etc. compounded in high carbon and high manganese steel. Through dispersion treatment, the solid solution strengthened austenite matrix is ​​dispersed with a spherical second phase Grinding point metallographic structure. The production process is simple, the cost is low, and the material source is abundant. It is a good material for the manufacture of metallurgy, mining, construction, building materials and mechanical equipment. Typical application: crusher palate.
How to choose diamond wear-resistant materials:
[1] The most basic condition when buying diamond wear-resistant materials is to first look at the manufacturer's quality production certificate, whether the proportion of diamond floor materials meets the standards required by the national building materials
ã€2】 Whether the emery floor manufacturers have long-term professional out-of-town construction experience and certification of construction qualifications, try not to choose a temporary embellished emery floor construction team
[3] It is very important whether the construction plan of the diamond wear-resistant ground meets the standards of the industrial floor. It is very important to see whether each construction site is detailed and professional. Whether it is simple plagiarism, imitation, exaggerating functions for their own benefit and cutting corners
[4] Whether the acceptance of the final emery wear-resistant ground project is open and inspected one by one from strength, hardness, and wear resistance, so as to prevent the contractor from making false and sloppy carelessness. Compare whether the price list of emery floor construction is provided according to a reasonable and transparent angle.
The above is the relevant introduction about the wear-resistant materials and the purchase method. If you want to know more related information, please pay more attention to this website, which will provide you with more complete, more detailed and updated information.
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