Ceramic elbow requires information
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The inner wall of the wear-resistant elbow and straight pipe is centrifugally cast with a composite ceramic wear-resistant layer. The wear-resistant layer keeps the surface flat and smooth, and the surface hardness reaches above HRC80. A 300m straight pipe section is added to the inlet and outlet sides of the wear-resistant elbow, which must be lined with a ceramic wear-resistant layer and have qualified grooves processed on both ends to facilitate welding. When supplying the product, the product's certificate of conformity and quality inspection report including product material, hardness, etc. are provided; and instructions on the product's cutting, welding processes, precautions, etc. are provided.
Technical requirements for ceramic elbows for ash conveying and wear-resistant pipes. Ceramic elbows for ash conveying pipes are often used in power plants. Domestic and foreign thermal coal contains a lot of impurities (including stones, etc.) and is of very low quality. When used in power plant ash conveying wear-resistant elbows, there are problems such as serious wear and short service life. Using ceramic wear-resistant pipes, the effect is obvious. 1. The ash conveying lined ceramic composite pipe adopts a convex and concave inlaid anti-falling ceramic patch structure and is used in the ash conveying system. The thickness of the steel pipe is not less than 5mm and the thickness of the ceramic is less than 8mm. 2. In order to reduce the transportation resistance in the pipe, a single elbow ceramic outer pipe must adopt an integral or hot-simmering elbow structure. A single elbow cannot use a shrimp waist elbow or a spliced elbow structure. 3. In order to reduce the incidence of leakage, the length of a single straight pipe fitting should not be less than 6 meters. A single ceramic outer pipe must be produced from a whole seamless steel pipe. A single straight pipe cannot be produced by splicing multiple sections. 4. The inner diameter of all pipes must be consistent. The lining ceramic blocks must be tightly connected without gaps. The surface must be flat and smooth. Adhesives or other substances cannot be used for filling. After the ceramic pipe is formed, the debris in the pipe must be cleaned. The lining should appear ceramic white. 5. Adhesive: A high-temperature-resistant, low-temperature-resistant, inorganic adhesive compound is used as the bonding agent between the steel body and the steel body. The thickness is ≥1mm. The adhesive must have stable performance, strong impact resistance, and be able to operate for a long time at temperatures between -30°C and +600°C, with full filling.
:Handshakes communicate with each other
:Handshakes communicate with each other
Wear-resistant pipes are composite pipes that are used in parts of engineering projects with severe wear and tear. A layer of wear-resistant layer is added inside to play the role of energy saving, emission reduction, wear resistance and anti-corrosion. Depending on the wear conditions, there are also different material choices for wear-resistant pipe linings. There are wear-resistant ceramic pipes lined (lined with aluminum oxide, silicon carbide, zirconia, silicon nitride, sialon, aluminum nitride, boron nitride, etc.) ； Wear-resistant alloy pipe ； Tortoiseshell mesh wear-resistant pipe fittings ； Steel rubber wear-resistant pipe ； Steel plastic wear-resistant pipe ； Wear-resistant cast stone pipe ； Wear-resistant self-propagating composite pipe ； Rare earth alloy wear-resistant pipes, etc. Commonly used wear-resistant pipes are corundum ceramic wear-resistant pipes. The outer layer of the wear-resistant pipe is a seamless steel pipe and the inner layer is corundum. The hardness of the corundum layer is as high as HV1100-1400, which is equivalent to tungsten-cobalt carbide, and its wear resistance is more than 20 times higher than that of carbon steel pipes. For example, the wear-resistant straight pipe dn150, the outer diameter of the steel pipe is 159mm or 168mm. It mainly depends on which series of pipes it is. The material is 16 manganese, the ceramic is 6mm thick, the pipe is 10mm, and the length is 6 meters. Wear-resistant straight pipes are manufactured using a high-tech production process - self-igniting high-temperature clutch synthesis. The pipe is composed of three layers: corundum ceramic, transition layer and steel from the inside to the outside. The ceramic layer is formed into dense corundum porcelain (AL2O3) at a high temperature above 2200°C, and forms a strong bond with the steel pipe through the transition layer. Composite pipes have good wear resistance, heat resistance, corrosion resistance, resistance to mechanical and thermal shock, and good weldability. Wear-resistant straight pipes are ideal wear-resistant and corrosion-resistant pipes for transporting granular materials, grinding, corrosive media, etc.
The wear-resistant pipes used in coal washing plants generally use ceramic-lined wear-resistant pipes, and the outer rigid body of the ceramic-lined wear-resistant pipes is made of 20# seamless steel pipes. The specifications and models include 159, 219, 325, 426, etc., and the wall thickness is 1.0 pressure wall thickness. The wear-resistant pipe is lined with ceramic sheets made of 92% high-purity corundum ceramic sheets, with a hardness of over 85 and a density of ≥3.6g/cm3. The wear-resistant pipes lined with ceramic sheets are connected by flanges to facilitate installation and construction. Ceramic-lined wear-resistant pipe transportation is not only used in the power industry, but also throughout metallurgy, coal, petroleum, chemical industry, building materials, machinery and other industries.