Thermal spraying repair is a technology that uses thermal spraying technology to repair and strengthen the surface of damaged parts and equipment. Here's how:
Basic principle
Thermal spraying repair is based on thermal spraying technology, through a specific heat source (such as flame, electric arc, plasma arc, etc.) to heat the spray material (metal, ceramic, alloy, plastic and other powder or wire)
Molten or semi-molten state, so that it gets enough energy. Then these molten or semi-molten materials are atomized and accelerated by high-speed airflow (such as compressed air, inert gas, etc.), so that they hit the surface of the parts to be repaired at high speed. At the moment of impact, these particles are rapidly cooled and solidified, produce mechanical occlusion, physical adsorption and partial metallurgical combination with the surface of the parts, accumulate layer by layer to form a coating with certain properties and thickness, so as to achieve the purpose of repairing the size of the parts and improving the surface performance.
advantage
1. Wide range of application: Thermal spraying repair can use a variety of spraying materials, almost can repair a variety of metal, ceramic, polymer materials made of parts, suitable for different industries, different working conditions of damaged parts repair.
2. Good repair effect: it can restore the original dimensional accuracy and shape of the parts, and by selecting the appropriate spraying material, it can give the repaired surface excellent wear resistance, corrosion resistance, high temperature resistance, oxidation resistance and other properties, and extend the service life of the parts.
3. High flexibility: Thermal spraying equipment is relatively flexible, according to the size, shape and repair parts of different parts, choose different types of spray guns and spraying process, and even some large equipment can be repaired on site, reducing the disassembly and transportation costs of equipment.
Application field
1. Mechanical manufacturing and maintenance: repair the worn shaft, gear, hydraulic cylinder, mold and other parts, restore their dimensional accuracy and surface properties, and reduce the replacement cost of equipment.
2. Power industry: repair power plant boiler pipes, turbine blades and other parts, these parts work in high temperature, high pressure, corrosion and other harsh environment, prone to wear, corrosion and other problems, hot spray
Coating repair can effectively improve its corrosion resistance and wear resistance to ensure the safe operation of the equipment.
3. Petrochemical: Repair and protect the pump body, valve, reactor and other components in petroleum mining and chemical production equipment to resist the corrosion and erosion of the medium and improve the reliability and operation cycle of the equipment.