Grid sand blasting process

Abstract

The invention discloses a grid type sand blasting technology. The grid type sand blasting technology comprises the following technology steps that a, a sand storage tank, a negative pressure pump, a sand conveying pipeline, a dry type sand blasting machine and a sand blasting nozzle are checked; and b, steel casting sand is added in the sand storage tank, the negative pressure pump is started forconducting transverse, longitudinal and inclined alternated sand blasting on the surface of a wind power main shaft. The original sand blasting manner is changed, alternated sand blasting is conductedin the transverse direction, the longitudinal direction and the inclined direction, sawtooth-shaped grid type anchoring points are formed on the surface of the wind power main shaft, the number of the anchoring points is increased, pits formed on the surface of the main shaft through sand blasting are not perpendicular and are angled, the contact face is increased, and the coating attaching forceis greatly increased. Through electrophoresis or acid pickling, etched micro holes are formed in the pits originally formed through sand blasting, the specific surface area is further increased, eventhe sawtooth-shaped pits with the clearer edges and corners can be formed on the surface of the wind power main shaft alternately in the transverse direction, the longitudinal direction and the inclined direction in the same sand blasting path and through constant changes of the spray gun angles, and the specific surface area is increased.

Description

technical field [0001] The present invention relates to a grid-type sandblasting process. Background technique [0002] At present, all sandblasting processes are either horizontal sandblasting or vertical sandblasting. There are not many anchor points for sandblasting in one direction. The adhesion of the workpiece to the paint coating after sandblasting is not high. For large workpieces such as large wind power spindles This defect is more obvious, especially for offshore wind power, in order to resist corrosion and salt spray, some special anti-corrosion coatings need to be sprayed, but if the surface of the wind power main shaft has low adhesion to the paint coating, the anti-corrosion effect of the anti-corrosion coating Big discount. The authorized announcement number is CN101337295 B patent: sandblasting process of synchronizer gear ring, which is characterized in that: the steps are as follows: 1) select the wet sandblasting machine; 2) clamp the processed gear ring...

AI Technical Summary

Problems solved by technology

[0002] At present, all sandblasting processes are either horizontal sandblasting or vertical sandblasting. There are not many anchor points for sandblasting in one direction. The adhesion of the workpiece to the paint coating after sandblasting is not high. For large workpieces such as large wind power spindles This defect is more obvious, especially for offshore wind power, in order to resist corrosion and salt spray, some special anti-corrosion coatings need to be sprayed, but if the surface of the wind power main shaft has low adhesion to the paint coating, the anti-corrosion effect of the anti-corrosion coating Big discount

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