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Technological method for reducing deformation of sectioning thin-walled cylinder type workpieces

A process method and technology of thin-walled tubes, which are applied in the field of reducing deformation of split-valve thin-walled tubes, can solve problems such as deformation, processing efficiency, and product quality.

Inactive Publication Date: 2017-01-04
HARBIN ELECTRIC MASCH CO LTD
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Problems solved by technology

[0002] Many parts in the hydroelectric generator set are split-valve thin-walled cylindrical parts. The split-lobed cylindrical parts are elastically deformed after the material is formed, so that the workpieces are combined into multi-lobed, non-cylindrical shapes. The deformation can be corrected by increasing the machining allowance of the workpieces. , to ensure the cylindrical shape after processing; at the same time, due to the thin wall, the stress release after processing will also cause deformation. The larger the processing allowance, the greater the deformation after processing. Product quality requires a new process method to control and reduce deformation, improve product quality without reducing processing efficiency,

Method used

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  • Technological method for reducing deformation of sectioning thin-walled cylinder type workpieces
  • Technological method for reducing deformation of sectioning thin-walled cylinder type workpieces

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Embodiment Construction

[0016] The present invention is a process method for reducing deformation of a split thin-walled cylindrical part. The process method includes the following steps:

[0017] 1) if figure 1 As shown, combine the petaled cylindrical parts 1, and check the combined petaled cylindrical parts 1 by scribing lines. When the machining allowance is insufficient due to workpiece deformation, such as figure 2 The supporting tool 2 and the fastening tool 3 are installed as shown, and the shape of the split-valve cylindrical part 1 is corrected, and the tool is kept for more than 24 hours after correcting the shape;

[0018] 2) Disassemble the fastening tool 3, rough turn the two end surfaces and outer circle of the split cylinder part 1, etc., and do not rough turn the inner circle of the workpiece;

[0019] 3) Disassemble the supporting tool 2, and rough turn the inner circle of the split-petal cylindrical part 1;

[0020] 4) Disassemble the valve-splitting cylindrical part 1, and perf...

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Abstract

The invention relates to a technological method for reducing deformation of sectioning thin-walled cylinder type workpieces. According to structural characteristics of the sectioning thin-walled cylinder type workpieces, by means of the combination of various methods of beforehand sizing, sizing and time keeping, auxiliary supporting, rough and fine machining, aging treatment and the like, the cylinder type workpieces are better in cylindricity after being sized, the requirement for working allowance is met after sizing, meanwhile, machining allowance is uniform, machining stress is uniform, and deformation is uniform; the thin-walled cylinder type workpieces are placed under application of a special sizing tool for a period of time before being roughly machined, welding deformation of the thin-walled cylinder type workpieces is better eliminated; the thin-walled cylinder type workpieces are placed again under application of the special sizing tool for a period of time before being finely machined, workpiece deformation caused after stress release in aging treatment is further reduced; meanwhile, the sizing tool is used as a machining auxiliary supporting tool, the workpiece strength is increased, and machining deformation is reduced.

Description

technical field [0001] The invention relates to a process method for reducing deformation of a split thin-walled cylindrical part. Background technique [0002] Many parts in the hydroelectric generator set are split-valve thin-walled cylindrical parts. The split-lobed cylindrical parts are elastically deformed after the material is formed, so that the workpieces are combined into multi-lobed, non-cylindrical shapes. The deformation can be corrected by increasing the machining allowance of the workpieces. , to ensure the cylindrical shape after processing; at the same time, due to the thin wall, the stress release after processing will also cause deformation. The larger the processing allowance, the greater the deformation after processing. Product quality requires a new process method to control and reduce deformation, improve product quality without reducing processing efficiency, Contents of the invention [0003] The invention is a process method for reducing deformat...

Claims

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Application Information

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IPC IPC(8): B23P13/02
CPCB23P13/02
Inventor 王新洪
Owner HARBIN ELECTRIC MASCH CO LTD
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