Leveling roller surface roughening processing method
A processing method and technology of leveling rolls, which are applied in the field of texturing technology, can solve problems such as low work efficiency
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Embodiment 1
[0057] The surface grinding method is used to remove the oil stain and residual stress layer on the surface of the leveling roll. The surface roughness is Ra0.36, without quenching treatment, and the surface hardness is HRC41; Reach more than 90%, the average particle size is 220 microns, the pre-bombardment is driven by high-pressure nitrogen, the pressure is 5MPa, the bombardment gas preheating temperature is 280°C, the powder particle velocity is 300m / s, and the cumulative bombardment density is 3000 / mm 2 ; The secondary bombardment particles also adopt the alumina prepared by the atomization chilling method, the sphericity is more than 95%, and the average particle size is 60 microns. The gas preheating temperature is 550°C, the powder particle velocity is 600m / s, and the cumulative bombardment density is 10,000 pieces / mm 2 , the resulting leveling roll surface is a randomly distributed textured structure, see figure 2 shown. Finally, 35% surface polishing treatment is ...
Embodiment 2
[0059] The surface turning method is used to remove the oil stain and residual stress layer on the surface of the leveling roller. The surface roughness is Ra0.75, without quenching treatment, and the surface hardness is HRC39; the pre-bombardment powder particles are made of cemented carbide balls, prepared by atomization chilling method, spherical The density reaches more than 90%, the average particle size is 280 microns, the pre-bombardment is driven by high-pressure compressed air, the pressure is 12MPa, the bombardment gas temperature is room temperature, the powder particle speed is 350m / s, and the cumulative bombardment density is 2200 / mm 2 ; The secondary bombardment powder particles are prepared by zirconia, mechanical crushing and grinding method, the sphericity is more than 80%, the average particle size is 30 microns, the secondary bombardment uses nitrogen gas, the pressure is 2.8MPa, the gas preheating temperature is 400 ° C, the powder particle speed 630m / s, cum...
Embodiment 3
[0061] Polishing after surface turning is used to remove the oil stain and residual stress layer on the surface of the leveling roller. The surface roughness is Ra0.24, the surface is quenched, and the surface hardness is HRC50; the pre-bombardment powder particles are a mixture of zirconia and yttrium oxide, and the mechanical crushing and grinding method Preparation, the sphericity reaches more than 80%, the average particle size is 180 microns, the pre-bombardment uses a mixture of high-pressure nitrogen and helium with a ratio of 7:3, the pressure is 8MPa, the bombardment gas preheating temperature is 150°C, and the powder particle velocity 380m / s, cumulative bombardment density 3500 / mm 2 ; The secondary bombardment powder particles are made of alumina, prepared by atomization and chilling method, the sphericity is above 95%, the average particle size is 35 microns, the secondary bombardment is nitrogen gas, the pressure is 4MPa, the gas preheating temperature is 200°C, and...
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