Method for manufacturing large elastic obturating piston ring

A sealing ring and manufacturing method technology, which is applied in the field of mechanical processing technology, can solve problems such as deformation, weak structural rigidity, and no manufacturing process for large elastic sealing rings.

Inactive Publication Date: 2011-05-11
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large refers to the outer diameter greater than 300mm, and the material of the large elastic sealing ring is generally spring steel or high-temperature alloy steel. Because of the weak stru...

Method used

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  • Method for manufacturing large elastic obturating piston ring
  • Method for manufacturing large elastic obturating piston ring
  • Method for manufacturing large elastic obturating piston ring

Examples

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Embodiment Construction

[0043] A gas turbine requires a large elastic sealing ring with a pressure-equalizing radial sealing ring structure to meet gas sealing requirements. Use the present invention to process large elastic opening annular spring ring, such as figure 2 As shown, the requirement is that the outer diameter is Φ890 in the restricted state +0.03 mm, inner diameter Φ864mm (guaranteed radial width 13 -0.2 mm), thickness 6 -0.05 mm open ring spring expansion ring, the outer circle profile is 0.02mm-0.04mm in the restricted state, and the part material is GH150.

[0044] The specific processing steps are as follows:

[0045] 1. In the free state of the part, use a lathe to turn a ring with an outer diameter of Φ920mm, an inner diameter of Φ855mm, and a thickness of 7mm. Cutting parameters: cutting speed 30m / min, feed rate 0.3mm / n, cutting depth 0.4mm.

[0046] 2. When the part is in a free state, use a drilling machine to drill 32 process pressing holes evenly distributed on the diamet...

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Abstract

The invention belongs to the field of machining process and discloses a method for manufacturing a large elastic obturating piston ring. The method comprises the following steps: (1), turning the outer diameter, inner diameter and thickness of the product through a lathe; (2), drilling a process compression hole through a drilling machine; (3), performing semi-finish turning to the thickness through the lathe; (4), conducting heat treatment; (5), grinding the thickness plane through a grinding machine; (6), cutting an inner circle, an outer circle and an opening through a linear cutting machine; (7), performing external grinding through the grinding machine; and (8), grinding an inner hole through the grinding machine. The invention has the benefits that the method for manufacturing the large elastic obturating piston ring with the pressure-equalizing radial sealing ring structure is devised; the deformation law of roughly machining the contour under the state without radial stress and the influence to the profile tolerance and the opening dimension of the piston ring during the process of finely machining the inner circle and the outer circle under the radial stress state are discovered; the difficult process problems that the structure rigidity of parts is poor, the machining deformation is easily caused, and the machining accuracy of the parts is affected are solved; and the method fills the gap in China.

Description

technical field [0001] The invention belongs to the field of mechanical processing technology, and in particular relates to a method for manufacturing a large elastic sealing ring. Background technique [0002] The processed product of the manufacturing method of the large elastic sealing ring is a large elastic sealing ring with a pressure equalizing radial sealing ring structure. Large refers to an outer diameter greater than 300mm, and the material of large elastic sealing rings is generally spring steel or high-temperature alloy steel. Because of the weak structural rigidity, deformation is easy to occur during processing, which affects the processing accuracy of the parts. At present, there is no manufacturing process for processing large elastic sealing rings. Contents of the invention [0003] The object of the present invention is to provide a kind of manufacturing method of large-scale elastic sealing ring, according to the radius variable of each point on the ri...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 吕泉
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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