High-strength corrosion-resistant stirrer blade and manufacturing method thereof

Abstract

The invention discloses a high-strength corrosion-resistant stirrer blade and a manufacturing method thereof. The stirrer blade comprises a blade body, wherein a plurality of through holes are uniformly formed on the surface of the blade body; and the outer side of the blade body is coated with an ultrahigh molecular weight polyethylene powder layer. The stirrer blade is manufactured by putting a cast steel stirrer blade into a mould, coating the stirrer blade with the ultrahigh molecular weight polyethylene powder, and then performing mould pressing, calcining and forming the stirrer blade. The manufactured stirrer blade which is coated with ultrahigh molecular weight polyethylene is high in strength, abrasion-resistant, high in corrosion resistance, economical and practical; the service life of the manufactured stirrer blade is more than two years; the manufactured stirrer blade is difficult to corrode in a natural environment and has a good stirring function; and the manufactured stirrer blade has the advantages of high weather resistance, fatigue resistance, electrical insulation and the like; therefore, the manufactured stirrer blade can be produced in batches as industrial products, the maintenance cost, the repair cost and replacement cost of the stirrer blade can be greatly reduced, and the manufactured stirrer blade has an industrial application value.

Description

technical field [0001] The invention relates to a mixer blade, in particular to a mixer blade coated with ultra-high molecular weight polyethylene with wear-resistant and anti-corrosion properties and a manufacturing method thereof. Background technique [0002] At present, many non-ferrous metal smelting industries in my country adopt the hot acid leaching process, and the main equipment used is the mixer. Its working conditions are usually acidity: H 2 so 4 10-15%, temperature>90oC, solid-liquid ratio about 9:1, that is, each liter of solution contains 1 ton of calcined sand, while the bulk specific gravity of calcined sand is 1.8, and the particle size is less than 80 mesh. Under this process condition, the mixer is required to continuously Work non-stop. Although domestic stirring equipment is made of imported stainless steel 316L, 904L or higher nickel, chromium, and molybdenum alloys, the solution contains corrosive element chlorine 300-400mg / L and metal element...

AI Technical Summary

Problems solved by technology

Although domestic stirring equipment is made of imported stainless steel 316L, 904L or higher nickel, chromium, and molybdenum alloys, the solution contains corrosive element chlorine 300-400mg / L and metal elements more active than iron, so that the blades of the mixer Damaged due to corrosion, usually, it has to be replaced every three months, which not only seriously affects normal production, but also has high maintenance and replacement costs, which is not suitable for industrial production requirements