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Sand blasting or spraying method for slit workpiece

A workpiece and sandblasting technology, applied in the direction of spraying device, can solve problems such as hidden quality problems and difficult to remove iron sheets, and achieve the effect of good quality, high efficiency, and optimization of workpiece sandblasting or spraying process.

Active Publication Date: 2022-01-11
HUANENG GRP R&D CENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Sand blasting or spraying method for slit workpiece
  • Sand blasting or spraying method for slit workpiece
  • Sand blasting or spraying method for slit workpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A sandblasting or spraying method for slit workpieces, combined with figure 1 with figure 2 shown, including the following steps:

[0047] Step S1. First, use a caliper to measure the width of the gap. The measurement result shows that the gap width at this position is 4 mm. Select a shielding material. The shielding material is a plastically deformable metal material. For example, iron sheet or alloy sheet is selected as the shielding material. The thickness is 0.4mm thick iron sheet.

[0048] Step S2, forming the shielding material into a V-shape, one side of the shielding material has part A of the suspension wing 1, and the opening size of the V-shaped shielding material is equal to the width of the workpiece gap minus twice the thickness of the shielding material; for example: according to It is required to be folded into a V shape. The width of the V-shaped opening is the gap width 4mm minus twice the thickness of the iron sheet 0.4mm, which is 3.2mm. The verti...

Embodiment 2

[0055] The difference between this embodiment and the shielding method of Embodiment 1 is that the support structure is configured as a trapezoidal block. The material of the trapezoidal block can be metal, cork, rubber, plastic, etc. The trapezoidal block makes part C of the iron sheet close to the surface of the workpiece.

Embodiment 3

[0057] The difference between this embodiment and the masking method of Embodiment 1 is that, refer to image 3 , the design of the shielding material is shaped into a W shape.

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Abstract

The invention relates to the technical field of mechanical workpiece machining, discloses a sand blasting or spraying method for a slit workpiece, and solves the technical problems existing in two traditional methods of high-temperature adhesive tape shielding and iron sheet shielding. The method comprises the following steps that S1, a shielding material is selected; S2, the shielding material is formed into a V shape; S3, the formed shielding material is uniformly inserted into the gaps of the workpiece; S4, a supporting structure is arranged between the part B and the part C of the shielding material; S5, sand blasting or spraying operation is started; and S6, the supporting structure is dismantled, the shielding material is dismantled, and sand blasting or spraying operation is completed. According to the sand blasting or spraying method for the slit workpiece, the V-shaped shielding material with suspension wings is designed to shield the gaps of the workpiece, and the V-shaped shielding material is convenient to mount and dismount, high in efficiency and good in quality, so that the purpose of optimizing the sand blasting or spraying process of the workpiece is achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical workpiece processing, more specifically, it relates to a sandblasting or spraying method for slit workpieces. Background technique [0002] Power system components are increasingly being protected by thermal spraying on their surfaces. In coal-fired power plants, hydropower plants, and gas-fired power plants, in order to improve the service life of equipment and extend the maintenance cycle of units, thermal spraying technology is often used to protect the surface of parts 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 part is only sprayed on the area with severe wear, and the area not to be sprayed needs to be covered to avoid being polluted by the coating. In accordance with the size requirements, it is particularly important to shield this area,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B12/28
CPCB05B12/28
Inventor 周大鹏张璐刘刚江雄郎梼王铭辉袁东刘加将延帅黄子三
Owner HUANENG GRP R&D CENT CO LTD
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