Preparation method of powder hot spray nano-material coating
A nanomaterial, thermal spraying technology, applied in coatings, devices for coating liquids on the surface, etc., can solve the problems of easy pollution and discoloration of coatings, complex manufacturing processes, and high manufacturing costs, and achieve good melting and fluidity. Good, large powder output
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[0023] Example The use of oxyacetylene flame thermal spraying of agglomerated nano α-Al on the surface of the steel substrate 2 O 3 Thermal spraying powder to prepare nano material coatings that are resistant to high temperature oxidation, wear resistance, reflection, thermal barrier, corrosion and erosion of molten metal, combined figure 1 ~4 to further describe the specific embodiments of the present invention:
[0024] 1. Strengthen the sandblasting on the surface of the steel base, including purification, activation and nano-treatment. Use high-quality corundum or quartz sand with a particle size of 7-30 mesh, use a supersonic or subsonic sand blasting gun with a pressure of 1 to 1.5 MPa, a flow rate of 5 to 6 kg / min, and a flow rate of 1.2 to 1.8 m 2 / h of sandblasting efficiency for sandblasting coarsening, decontamination and rust removal, and purification, activation and nanometerization of the surface of the steel base. After the enhanced sandblasting treatment, the meta...
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