Mine wear-resistant composite metal plastic pipe, special preparation equipment thereof and preparation method thereof

Abstract

The invention belongs to the technical field of pipes and discloses a mine wear-resistant composite metal plastic pipe, special preparation equipment thereof and a preparation method thereof. The mine wear-resistant composite metal plastic pipe has the main technical characteristics that: the wear-resistant composite metal plastic pipe comprises an outer wall steel pipe, wherein a high molecular weight polyethylene lining layer is arranged in the outer wall steel pipe; a maleic anhydride graft copolymerization modification low molecular weight polyethylene intermediate bonding layer used for bonding the high molecular weight polyethylene lining layer and the outer wall steel pipe into a whole is arranged between the high molecular weight polyethylene lining layer and the outer wall steel pipe; the end part of the outer wall steel pipe is provided with a flange plate with a trough; and the end part of the high molecular weight polyethylene lining layer is flanged and clamped into the trough. The mine wear-resistant composite metal plastic pipe uses the outer wall steel pipe as a pressure-bearing body with high pressure-bearing capability, uses the high molecular weight polyethylene lining layer as a wear-resistant and anti-corrosive layer to convey media such as slurry, paste, corrosive fluids and the like with different particle diameters, and uses the maleic anhydride graft copolymerization modification low molecular weight polyethylene intermediate bonding layer to composite the three layers of materials into a whole with the same expansion and shrinkage coefficients on the inner layer and the outer layer to overcome the defect that the pipe is blocked caused by plastic pipe end face deformation and steel-plastic delamination in the process of use.

Description

technical field [0001] The invention belongs to the technical field of pipelines, and specifically discloses a mine-used wear-resistant steel-plastic composite pipeline and its preparation special equipment and preparation method. Background technique [0002] At present, the wear-resistant pipelines used for tailings transportation, filling and fly ash transportation in non-ferrous mines such as gold mines, silver mines, iron ores, copper mines, molybdenum mines, and power plants are mainly steel pipes, and some manufacturers use ceramic composite pipes. Steel pipe and polyethylene pipe. Because the steel pipe has a large specificity, is not wear-resistant, and is not anti-corrosion, a lot of energy consumption resources are wasted; although the ceramic composite steel pipe is wear-resistant, it has the disadvantages of high quality, high installation and construction costs, and the more fatal flaw is that it is damaged after being impacted. The sintered layer of the inner...

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Problems solved by technology

There must be a gap in the suit. Because the coefficients of thermal expansion and contraction of the two materials are different, it is easy to delaminate the plastic pipe and the steel pipe during use, resulting in pipeline blockage, and plastic caused by changes in weather conditions during the storage of the pipe. The phenomenon that the end face of the pipe is higher than or retracted into the end face of the steel pipe

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