GH4720Li alloy, smelting method thereof, GH4720Li alloy component and aeroengine

A technology of aero-engines and smelting methods, applied in the direction of engine components, machines/engines, liquid fuel engines, etc., can solve the unfavorable GH4720Li alloy purity and metallurgical quality stability control, limit the GH4720Li alloy purity, lack of operating guidelines and evaluation standards and other problems, to achieve the effect of increasing the stirring effect, high fatigue life, and reducing the content of impurities

Active Publication Date: 2020-02-04
BEIJING CISRI GAONA TECH +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when smelting GH4720Li alloy, the refining period of vacuum induction smelting lacks scientific and reasonable operating guidelines and evaluation standards, and only depends on the fluidity of the alloy liquid surface in the crucible or the refining time of the operator as the basis for the completion of refining, which will not be conducive to GH4720Li The stable control of alloy purity and metallurgical quality limits the further improvement of GH4720Li alloy purity

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
  • GH4720Li alloy, smelting method thereof, GH4720Li alloy component and aeroengine
  • GH4720Li alloy, smelting method thereof, GH4720Li alloy component and aeroengine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The smelting method of GH4720Li alloy comprises the following steps:

[0066] 1. Ingredients: According to the GH4720Li alloy composition control requirements, the amount of raw materials for each element is calculated according to the mass percentage;

[0067] 2. Material preparation: select nickel plate, cobalt plate, metal chromium, molybdenum bar, tungsten bar, ferroboron, graphite electrode, aluminum, titanium and zirconium, all raw materials need to be clean and free of oil;

[0068] 3. Loading: nickel plates and cobalt plates are randomly loaded into the bottom of the furnace, tungsten strips and molybdenum strips are placed in the middle of the crucible of the vacuum induction furnace, and the intermediate alloy is placed on it;

[0069] 4. High vacuum: the vacuum induction furnace is vacuumed to 30Pa;

[0070] 5. Melting period: the complete melting temperature of the alloy material is 1530°C;

[0071] 6. Refining period: After the alloy material is fully mel...

Embodiment 2

[0076] The smelting method of the GH4720Li alloy is the same as in Example 1, except that in step 6, if the absolute value of the change rate of the gas leakage rate measured twice adjacently is 4.5%-5%, the refining is stopped.

Embodiment 3

[0078] The smelting method of the GH4720Li alloy is the same as in Example 1, except that in step 6, if the absolute value of the change rate of the air leakage rate measured twice adjacently is 1.5%-2%, the refining is stopped.

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 provides a GH4720Li alloy, a smelting method thereof, a GH4720Li alloy component and an aeroengine, and relates to the technical field of smelting. The smelting method of the GH4720Li alloy comprises the following steps of performing vacuum induction smelting on a GH4720Li alloy raw material; and during the refining period of the vacuum induction smelting, stirring with power frequency stirring power being 100-150 KW, measuring the leakage rate of a vacuum induction smelting system during the refining process, and if the absolute values of the change rates of the leakage rates measured at adjacent two times are smaller than or equal to 7%, stopping refining. The smelting method can effectively reduce the content of harmful gas elements in an alloy liquid in smelting, reducesinclusion amount distribution, and enables the obtained GH4720Li alloy to be high in purity and high in metallurgical quality.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a GH4720Li alloy and a smelting method thereof, GH4720Li alloy components and an aero-engine. Background technique [0002] At present, when smelting GH4720Li alloy, the refining period of vacuum induction smelting lacks scientific and reasonable operating guidelines and evaluation standards, and only depends on the fluidity of the alloy liquid surface in the crucible or the refining time of the operator as the basis for the completion of refining, which will not be conducive to GH4720Li The stable control of alloy purity and metallurgical quality limits the further improvement of the purity of GH4720Li alloy. Therefore, upgrading the smelting process in the refining period is very important to further improve the purity and mechanical properties of GH4720Li alloy. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] The object of t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/03C22C19/05F01D5/02F04D29/26F01D5/28
CPCC22C1/023C22C1/03C22C19/056F01D5/02F01D5/282F04D29/26F05D2300/17
Inventor 曲敬龙谷雨杨树峰杜金辉安腾陈正阳毕中南秦鹤勇唐超王民庆史玉亭孟令胜荣义
Owner BEIJING CISRI GAONA TECH
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