Forming method of high-strength and thin-wall longer high temperature alloy pipe

A technology of superalloy and forming method, which is applied in the field of forming high-strength and long-length thin-walled superalloy tubes, can solve the problems of fracture, wrinkle, cracks of high-strength and long-length thin-walled superalloy tubes, etc., so as to reduce hardness and increase Flexible and low-cost effects

Inactive Publication Date: 2015-04-08
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a method for forming high-strength and large-length thin-walled superalloy pipes, so as

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example one

[0024] A method for forming a high-strength long-length thin-walled high-temperature alloy tube includes the following steps:

[0025] (1) Softening: Choose GH738 ultra-high-strength high-temperature alloy pipe with diameter of ф6.3mm, wall thickness of 0.2mm, and length of 1800mm. Put the pipe into a vacuum furnace, adjust the temperature to 830℃, and soften the pipe for 150 minutes , In order to bend during forming;

[0026] (2) Blocking: Seal one end of the pipe tightly with a hard cone-shaped cork, and control the length of the cork to 15mm to ensure a tight sealing. The remaining length is 40mm, which is convenient for pulling out the cork after forming. Out

[0027] (3) Filling: Inject the emery with a fineness of 60 mesh into the pipe from the unblocked end of the pipe through a funnel. During the filling of emery, shake or shake the pipe continuously so that the emery can better fill the entire pipeline space. Stop filling when 15mm away from the pipe or...

Example Embodiment

[0031] Example two

[0032] A method for forming a high-strength long-length thin-walled high-temperature alloy tube includes the following steps:

[0033] (1) Softening: Choose GH738 ultra-high-strength high-temperature alloy pipe with diameter of ф8.6mm, wall thickness of 0.1mm, and length of 1750mm. Put the pipe into the quenching furnace, adjust the temperature to 850℃, and soften the pipe for 120min , In order to bend during forming;

[0034] (2) Blocking: Seal one end of the pipe tightly with a hard cone-shaped cork, and control the length of the cork to enter the pipe to 20mm to ensure a tight sealing. The remaining length is 40mm to facilitate the removal of the cork after forming. Out

[0035] (3) Filling: Inject emery with a fineness of 80 mesh into the pipe from the unblocked end of the pipe through a funnel. During the process of filling the emery, shake or shake the pipe continuously to make the emery fill the entire pipeline space. Stop filling when it is 20mm away fro...

Example Embodiment

[0039] Example three

[0040] A method for forming a high-strength long-length thin-walled high-temperature alloy tube includes the following steps:

[0041] (1) Softening: Choose GH4648 ultra-high-strength high-temperature alloy pipe with diameter of ф16mm, wall thickness of 0.5mm, and length of 1600mm. Put the pipe into a quenching furnace, adjust the temperature to 840℃, and soften the pipe for 130 minutes to Bending during forming;

[0042] (2) Blocking: Seal one end of the pipe tightly with a hard cone-shaped cork, and control the length of the cork to enter the pipe to 18mm to ensure tight sealing. The external length is 30mm to facilitate the removal of the cork after forming. Out

[0043] (3) Filling: Inject emery with a fineness of 80 mesh into the pipe from the unblocked end of the pipe through a funnel. During the process of filling the emery, shake or shake the pipe continuously to make the emery fill the entire pipeline space. Stop filling when 18mm away from the pipe o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Wall thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a forming method of a high-strength and thin-wall longer high temperature alloy pipe, and belongs to the technical field of metal forming. The forming method comprises the following steps of firstly, softening a pipe by a solid melting method, tightly blocking one end of the pipe by a wood stopper, filling emery into the pipe to fill the whole pipeline space, tightly blocking the other end of the pipe by a wood stopper, putting the pipe on a forming profiling mold, slowly heating the forming part, deforming the pipe into the required shape by external force, cooling the pipe to the normal temperature, taking out the wood stoppers, and pouring out the emery, so as to complete the forming of the pipe. The forming method has the advantages that the technical problems of forming of cracks, tears, wrinkles, breaking and the like during and after forming of the high-strength and thin-wall longer highly-alloying pipe are effectively solved; the reliability is high, the cost is low, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of metal forming, in particular to a forming method of a high-strength and long-length thin-wall superalloy tube. Background technique [0002] In modern aerospace technology, a large number of high-temperature alloy materials are used to make engine structural parts and components, and with the continuous improvement of engine performance, new materials are continuously applied to corresponding types of engines. However, the use of ultra-high-strength superalloy materials on the high-temperature hot-end parts of the engine, especially as oil pipes and gas pipelines, must be bent and formed according to the corresponding shape and layout structure. However, due to the high degree of alloying of ultra-high-strength superalloys, it is easy to crack and produce cracks during forming, or produce wrinkles in the forming parts, which seriously affects the quality of products. In addition, for the forming of some ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21D9/03B21D9/15B21D9/18
Inventor 夏昌龙何思逸刘健罗运芬齐维斌孙平
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap