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Method for processing thin stephanoporate steel plate

A processing method and technology for thin steel plates, applied in the processing field of thin porous steel plates, can solve problems such as difficult correction, stress concentration deformation and deformation of pipe separators, and achieve the effect of ensuring drilling quality and reducing drilling deformation.

Inactive Publication Date: 2009-04-08
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Because the tube separator of the seawater desalination evaporator is large and thin, the thickness of the steel plate is generally 6 to 20 mm, and it is covered with holes. Originally, the drilling process was carried out in the order of drilling holes in a single tube separator from the bottom to the top. , the pipe separator is deformed due to the thin steel plate thickness, poor rigidity and stress concentration caused by drilling, and the deformation is not easy to correct

Method used

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Embodiment

[0013] A processing method for thin perforated steel plates is as follows: first stack 5 thin steel plates together, then drill 3 holes on the stacked thin steel plates at the original positions to be drilled as positioning holes, and then drill 3 holes in the 3 positioning holes. Bolts are installed on the top, and finally the peripheral holes are first drilled on the fixed stacked thin steel plates, and then the inner holes are gradually drilled, and finally the bolts are removed. The three positioning holes are the holes to be drilled originally, which can reduce the free area of ​​the steel plate and ensure The flatness of the steel plate ensures the processing accuracy.

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Abstract

The invention relates to a method for processing a thin perforated steel plate, which is characterized in that the method comprises the following steps: four to six thin steel plates are overlapped first; then the positions to be drilled originally, on the overlapped thin steel plates are drilled with at least two holes first which are taken as positioning holes; bolts are arranged on the positioning holes for fixation; and finally peripheral holes are drilled first on the fixedly overlapped thin steel plates, and then holes inside the periphery are drilled. The method has the advantages that the method has simple and convenient operation, and effectively reduces the deformation of the thin steel plates and tube plates caused by poor rigidity and the stress of drilling operation.

Description

technical field [0001] The invention relates to a processing method of a thin porous steel plate, which is used for drilling holes of a seawater desalination evaporator, and belongs to the technical field of drilling processing of thin porous steel plates. Background technique [0002] Due to the large and thin tube partitions of seawater desalination evaporators, the thickness of the steel plate is generally 6 to 20 mm, and it is covered with holes. Originally, the drilling process was carried out in the order of punching holes in a single tube partition from bottom to top. , the tube diaphragm is deformed due to the thin steel plate thickness, poor rigidity and stress concentration caused by drilling, and the deformation is not easy to correct. Contents of the invention [0003] An object of the present invention is to provide a method of processing a thin perforated steel plate which reduces deformation due to poor rigidity and drilling stress. [0004] In order to ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B35/00
Inventor 陈春雄龚英荣顾乃彦盛浩
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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