Sandblasting or spraying method for slit workpiece

Abstract

The invention relates to the technical field of machining of mechanical workpieces, and discloses a sandblasting or spraying method for slit workpieces, which solves the technical problems existing in the two methods of traditional high-temperature tape shielding and iron sheet shielding, and includes the following steps: Step S1, selecting shielding material; step S2, forming the shielding material into a V-shape; step S3, inserting the formed shielding material into the gap of the workpiece evenly; step S4, setting a support between the B part and the C part of the shielding material structure; step S5, start sandblasting or spraying operation; step S6, dismantle the support structure, and remove the shielding material to complete the sandblasting or spraying operation. According to the above technical solutions, the present invention designs a V-shaped shielding material with cantilever wings to shield the workpiece gap, and the V-shaped shielding material is easy to install and disassemble, and has good efficiency and high quality, so as to achieve spraying on the workpiece. For sand or spray process optimization purposes.

Description

technical field [0001] The invention relates to the technical field of machining of mechanical workpieces, and more particularly, to a sandblasting or spraying method for slit workpieces. Background technique [0002] Power system components are increasingly using thermal spray technology to protect their surfaces. In coal-fired power plants, hydropower plants, and gas-fired power plants, in order to improve the service life of equipment and prolong the maintenance cycle of units, thermal spraying technology is often used to protect the surfaces of components that are subject to corrosion, wear, water erosion, and cavitation. In the process of thermal spraying, the sandblasting link is particularly important. Due to the control of the spraying area, usually a component is sprayed only for the severely worn area, and the area that is not sprayed needs to be shielded to avoid contamination by the coating. In line with the size requirements, the masking of this area is particu...

AI Technical Summary

Problems solved by technology

However, after the spraying is completed, there are still gaps in the iron sheet in the gap, and the sand particles impacted at high speed during the sandblasting process are stuck in the gap between the iron sheet and the workpiece, making it very difficult to remove the iron sheet after the work is completed, and there are certain quality risks.

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