Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Technique for producing small-size complex inner cavity titanium alloy casting by utilizing metal core

A technology of metal cores and process methods, applied in metal material coating process, metal processing equipment, cores, etc., can solve the problems that slurry coating and drying cannot be realized, and achieve high thermal shock resistance and high thermal stability Slight effects of sexual, physical and chemical reactions

Pending Publication Date: 2021-04-20
AEROSPACE HIWING HARBIN TITANIUM IND
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of the existing technology of investment precision casting composite water-soluble core. When the size of the inner cavity is small to a certain extent, the technology cannot realize the coating and drying of slurry and the existing investment precision casting composite ceramic core. The process method is not suitable for the technical problems of products with a high degree of closure such as small-sized complex flow channel structures, and provides a process method for producing small-sized complex inner cavity titanium alloy castings using metal cores

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
  • Technique for producing small-size complex inner cavity titanium alloy casting by utilizing metal core
  • Technique for producing small-size complex inner cavity titanium alloy casting by utilizing metal core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 (see figure 1 with figure 2 ): In the present embodiment, a process for utilizing a metal core to produce a closed impeller with an opening between the loam cake and the lower cover less than 5mm is carried out in the following steps:

[0033] 1. Use iron-based alloy to make the core, and then use vacuum plasma spraying equipment to spray Y on the surface of the core. 2 o 3 Coating, the thickness of the coating is 0.15mm, and after drying at 20°C for 24 hours, a coated core is obtained; the iron-based alloy is Q235 steel;

[0034] Two, the core is placed in the aluminum alloy wax mold, and the wax mold is pressed to obtain the wax mold; the material of the wax mold is aluminum alloy;

[0035] 3. Slurry the surface layer and the back layer of the wax model cleaned on the surface. Both the surface layer slurry and the back layer slurry are prepared from refractory materials and binders. The refractory material of the surface layer slurry is 85%. Y 2 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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a technique for producing a small-size complex inner cavity titanium alloy casting by utilizing a metal core, and belongs to the technical field of titanium alloy investment precision casting processes. The technique solves technical problems that in an existing investment precision casting composite water-soluble core technique, when inner cavity size is small to a certain extent, slurry coating and drying cannot be achieved, and an existing technological method for investment precision casting composite ceramic core is not suitable for small-size complex flow channel structures and other products with a high sealing degree. According to the technique, a metal core is adopted to replace an existing water-soluble core and an existing ceramic core, core removal is achieved through a chemical method by means of the property difference between metal core material and titanium alloy, development and production of small-size complex inner cavity products are completed, and the product size precision and the product quality are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy investment precision casting technology, and in particular relates to a process method for producing a titanium alloy casting with a small-sized complex inner cavity by using a metal core. Background technique [0002] In recent years, with the continuous upgrading of aerospace equipment, the titanium alloy structural parts used in it are developing towards complexity and precision, and some products have certain complex inner cavity structures or small-sized complex flow channel structures. This complex structure usually cannot be machined, and must rely on the preset core in the precision casting process to realize the product forming, usually using the process method of investment precision casting composite core. [0003] There are mainly two types of core materials, one is water-soluble core and the other is ceramic core. The technology of investment precision casting composite cerami...

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): B22C9/04B22C9/10B22C9/22B22C3/00C23C4/11C23C4/134C23C4/137
Inventor 张洋闻雅刘俊宝于宗溟吴东辉李东芳
Owner AEROSPACE HIWING HARBIN TITANIUM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com