Method for manufacturing GH4169 low pressure turbine box forging with flange

A GH4169, low-pressure turbine technology, which is applied in the field of forging preparation, can solve the problems of sensitive forging process parameters, narrow deformation temperature range, high degree of alloying, etc., to solve the problem of structure difference and deformation, uniform internal structure, and high material utilization rate Effect

Inactive Publication Date: 2019-05-03
GUIZHOU AVIATION TECHN DEV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production method of this type of forging is segmental manufacturing + welding or directly breaking and rolling after making a cylindrical billet; this production method has the following disadvantages: 1. Parts obtained by segmental manufacturing and welding, the There are differences in the structure of the material at the weld and other parts of the part, resulting in a decline in the performance of the part; 2. There are differences in the structure and performance of several forgings manufactured in sections, which affects the overall performance of the part
3. There is welding stress after welding, and large defo

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing GH4169 low pressure turbine box forging with flange
  • Method for manufacturing GH4169 low pressure turbine box forging with flange
  • Method for manufacturing GH4169 low pressure turbine box forging with flange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for manufacturing a flanged GH4169 low-pressure turbine case forging, comprising the following steps:

[0036] (1) Sawing: sawing the GH4169 bar according to certain specifications;

[0037] (2) Preheating: Heat the sawed GH4169 bar to 1030°C and keep it warm. The heat preservation is based on the effective thickness of the bar, and the heat preservation is 6 minutes per 10mm effective thickness;

[0038] (3) Upsetting and punching: heat the heat-preserved GH4169 bar at 1030°C to ≥1030°C for upsetting and punching, the final forging temperature is ≥870°C, and the pressure used for upsetting and punching is 3500T , the deformation of the bar after upsetting and punching is 32%, and the ring blank is obtained;

[0039] (4) Horse frame reaming: heat the ring blank at 1030°C to ≥1030°C, put it on the horse bar, put it on the horse frame, and under the drive of the press, the upper anvil exerts pressure F on the ring blank 1 (3500T), at the same time, the manipula...

Embodiment 2

[0045] A method for manufacturing a flanged GH4169 low-pressure turbine case forging, comprising the following steps:

[0046] (1) Sawing: sawing the GH4169 bar according to certain specifications;

[0047] (2) Preheating: Heat the sawed GH4169 bar to 1040°C and keep it warm. The heat preservation is based on the effective thickness of the bar, and keeps warm for 6 minutes per 10mm effective thickness;

[0048] (3) Upsetting and punching: heat the heat-preserved GH4169 bar at 1040°C to a degree ≥ 1030°C and then perform upsetting and punching. The final forging temperature is ≥ 870°C. The pressure used for upsetting and punching is 4000T, the deformation of the bar after upsetting and punching is 32%, and the ring blank is obtained;

[0049] (4) Horse frame reaming: heat the ring billet at 1040°C to ≥1030°C, put it on the horse bar, put it on the horse frame, and under the drive of the press, the upper anvil exerts pressure on the ring billet F 1 (4000T), at the same time, t...

Embodiment 3

[0055] A method for manufacturing a flanged GH4169 low-pressure turbine case forging, comprising the following steps:

[0056] (1) Sawing: sawing the GH4169 bar according to certain specifications;

[0057] (2) Preheating: Heat the sawed GH4169 bar to 1050°C and keep it warm. The heat preservation is based on the effective thickness of the bar, and keeps warm for 6 minutes per 10mm effective thickness;

[0058] (3) Upsetting and punching: heat the heat-preserved GH4169 bar at 1050°C to ≥1030°C for upsetting and punching, the final forging temperature is ≥870°C, and the pressure used for upsetting and punching is 4200T , the deformation of the bar after upsetting and punching is 32%, and the ring blank is obtained;

[0059] (4) Horse frame reaming: heat the ring billet at 1050°C to ≥1030°C, put it on the horse bar, put it on the horse frame, and drive the upper anvil to exert pressure F on the ring billet under the drive of the press 1 (4200T), at the same time, the manipulat...

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of forgings preparation, and particularly relates to a method for manufacturing a GH4169 low pressure turbine box forging with a flange. The method that part of a blank film is divided and broken into shape is adopted for manufacturing the GH4169 low pressure turbine box forging with the flange. The method comprises the following steps of sawing, preheating, upsetting, punching, reaming of a mandrel supporter, dividing and breaking forming the part of the blank film, and breaking forming. The GH4169 low pressure turbine box forging with the flange manufactured by the method has the advantages that the outer dimensions meet the manufacturing requirements of parts, and the forming is easy; the machining removal process has a smaller margin, the integrity of the forging flow line is maintained, and the subsequent manufacturing is in short cycle, so that the material utilization rate is high; the internal structure is uniform without need of welding, so that the structural differences and deformation problems caused by welding are solved; the tensile properties at room temperature and 650 DEG C is high and the long-lasting performance is great at 650 DEG C and 690 MPa, so that the technical requirements of aeroengine low-pressure turbines are met, and the margin is large.

Description

technical field [0001] The invention belongs to the technical field of forging preparation, in particular to a method for manufacturing a flanged GH4169 low-pressure turbine case forging Background technique [0002] GH4169 alloy is a precipitation-strengthened nickel-based superalloy with good high-temperature mechanical properties, good thermal process and welding performance, and can manufacture various parts with complex shapes. It is widely used in energy, aviation, petroleum, and nuclear industries. It has become an irreplaceable key material for the hot end parts of aviation gas turbine engines. [0003] The low-pressure turbine casing of an aero-engine is a typical large cone-shaped part and a large-height special-shaped ring part. The shape of the forging part is as follows figure 1 As shown, the cross-sectional area of ​​the large and small heads has a large difference, so it is difficult to directly roll the rectangular cross-section annular intermediate billet i...

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): B23P15/00
Inventor 罗鸿飞卢熠杨家典吴永安王华东张园园安世豪刘鹏张正
Owner GUIZHOU AVIATION TECHN DEV
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