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The effect of coating thickness on surface and internal mass is the result of different coating thicknesses after different power treatments. Under the condition that the coating thickness is not changed, the change of power has little effect on the quality of the cladding layer, and when the power is the same, changing the coating thickness, the surface quality and the internal quality of the cladding layer vary greatly. When the power is in the range of 1.8kW to 2.0kW and the coating thickness is 1mm to 2mm, a good cladding layer can be obtained.
When the coating thickness is 3mm, the laser power will continue to increase and the quality of the cladding layer can be changed. However, in actual work, the power of the equipment cannot be increased indefinitely, and the thicker the coating thickness according to the operating characteristics of the valve, the better. In the actual production should also be considered after the laser cladding, but also post-grinding. Therefore, the thickness of the laser cladding coating of the exhaust valve should be 2mm, which can not only satisfy the working conditions of the valve, but also ensure the stability of the process.
Effect of Adhesive on Cladding Layer Quality In the process of pre-coating the valve, the adhesive has a significant effect on the quality of the cladding layer. Adhesives should first ensure that the adhesive properties are good, and that they have a certain degree of high temperature resistance, and they must not be splashed or peeled off during the heating process. The adhesive must also be easily volatilized without damaging the properties of the cladding layer, favoring the formation of the cladding layer and being free of moisture.
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