A sealing component and its processing method

A technology of sealing components and processing methods, which is applied in the direction of metal processing, metal processing equipment, manufacturing tools, etc., and can solve the problem of poor sealing of dovetail groove cavity and upward plane, incomplete filling of non-metallic materials, and out-of-tolerance bonding gap of dissimilar materials and other problems to achieve the effect of reducing cracks and falling blocks, avoiding local cracks, and improving the degree of bonding

Active Publication Date: 2019-04-02
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of out-of-tolerance bonding clearance of dissimilar materials after processing of assemblies composed of metal and non-metal materials, local cracks and pieces of non-metal materials, non-metal materials not completely filling the cavity of the dovetail groove and poor sealing of the upward plane

Method used

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  • A sealing component and its processing method
  • A sealing component and its processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1, use gasoline or alcohol to clean the nest 2 made of polytetrafluoroethylene SFB-1, and remove the burrs inside the dovetail groove 3 of the component body 1 made of superalloy GH696 to obtain a clean nest 2 and component body 1.

[0037] Step 2, heating the clean nest 2 and component body 1, the heating equipment is a resistance furnace; the heating temperature is 150°C, and the heating time is 15 minutes to obtain the heated nest and component body.

[0038] Step 3, press the heated insert into the dovetail groove of the heated component body to obtain the assembled sealing component; wherein the working pressure of the press is 0.5 MPa.

[0039] Step 4: Use a CNC lathe to cut the sealing assembly. During the cutting process, the machining chips are smoothly discharged in a direction away from the processing surface; and the cutting process parameters for the cutting process are: the spindle speed is 800r / min, and the feed rate is 0.01 mm / r, the cutting depth ...

Embodiment 2

[0042] Step 1, use gasoline or alcohol to clean the nest 2 made of polytetrafluoroethylene SFB-1, and remove the burrs inside the dovetail groove 3 of the component body 1 made of superalloy GH696 to obtain a clean nest 2 and component body 1.

[0043] Step 2, heating the clean nest 2 and component body 1, the heating equipment is a resistance furnace; the heating temperature is 160°C, and the heating time is 8 minutes to obtain the heated nest and component body.

[0044] Step 3, press the heated insert into the dovetail groove of the heated component body to obtain the assembled sealing component; wherein the working pressure of the press is 0.7MPa.

[0045]Step 4: Use a CNC lathe to cut the sealing assembly. During the cutting process, the machining chips are smoothly discharged in a direction away from the processing surface; and the cutting process parameters for the cutting process are: the spindle speed is 1000r / min, and the feed rate is 0.1 mm / r, the cutting depth for...

Embodiment 3

[0048] Step 1, use gasoline or alcohol to clean the nest 2 made of polytetrafluoroethylene SFB-1, and remove the burrs inside the dovetail groove 3 of the component body 1 made of superalloy GH696 to obtain a clean nest 2 and component body 1.

[0049] Step 2, heating the clean nest 2 and component body 1, the heating equipment is a resistance furnace; the heating temperature is 155°C, and the heating time is 10 minutes to obtain the heated nest and component body.

[0050] Step 3, press the heated insert into the dovetail groove of the heated component body to obtain the assembled sealing component; wherein the working pressure of the press is 0.6 MPa.

[0051] Step 4, use a CNC lathe to cut the sealing assembly, and during the cutting process, the machining chips are smoothly discharged in a direction away from the processing surface; and the cutting process parameters of the cutting process are: the spindle speed is 900r / min, and the feed rate is 0.05 mm / r, the cutting dep...

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Abstract

The invention discloses a seal assembly. The seal assembly comprises an assembly body and a nested part, and a dovetail groove is formed in the assembly body. The nested part and the assembly body are heated, and then the nested part is arranged in the dovetail groove. The roughness Ra of the ascending plane of the seal assembly is not larger than 0.8 micrometer. Provided is also a processing method of the seal assembly, and the assembly body and the nested part are involved. The processing method includes the steps of heating the assembly body and the nested part, pressing the nested part into the dovetail groove of the assembly body after heating is conducted, conducting cutting machining on the seal assembly through a lathe, and obtaining the finished seal assembly finally. The method solves the problems that the combination gaps between different materials are out of tolerance, the non-metal material cracks and falling pieces occur locally, the non-metal material fails to fully fill a cavity of the dovetail groove, and the ascending plane sealing is poor after an assembly composed of a metal material and a non-metal material is processed.

Description

technical field [0001] The invention belongs to the technical field of sealing components, and relates to a sealing component formed by nesting metal materials and non-metallic materials; the invention also relates to a processing method of the sealing component, especially a sealing component composed of metallic materials and non-metallic materials processing method. Background technique [0002] The sealing assembly is one of the important parts of the aero-engine. It is assembled on a certain valve assembly of the engine, and it plays a key role in the airtight performance of a certain valve assembly. The part is a combination of non-metal and metal materials in the form of an embedded structure. [0003] For sealing components with special structure and performance requirements, in the past, non-complete hot-packing process was used for assembly, that is, metal parts were heated, and non-metal parts were not heated. Operators completed it by manually tapping with a ham...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P11/02B23P15/00
CPCB23P11/025B23P15/00
Inventor 张玉环韩新艳涂娇李飞穆谦周晓卫张亚军王旭科
Owner AECC AVIATION POWER CO LTD
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