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

Preparation process of alloy mold core for high-temperature alloy single crystal blade precision casting

A single crystal blade and preparation process technology, applied in other manufacturing equipment/tools, mechanical equipment, turbines, etc., can solve the problems of low yield, high scrap rate of alloy mold cores, and increased production cost of hollow-core turbine blades. High qualified rate of finished products, small deformation, small high temperature deformation effect

Active Publication Date: 2018-07-17
李庆
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, since ceramics are hard and brittle materials, and the existing cavity design of hollow blades is getting thinner and thinner, it is a great challenge to process ultra-thin ceramic cores
When casting finished products, the scrap rate of the demoulding step of the alloy core is high, which makes its yield low and increases the actual production cost of the hollow turbine blade

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
  • Preparation process of alloy mold core for high-temperature alloy single crystal blade precision casting
  • Preparation process of alloy mold core for high-temperature alloy single crystal blade precision casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0042] The formula of embodiment 1-3 metal powder and non-metallic powder is shown in Table 1

[0043]

[0044] According to the above formula, put the metal powder and non-metal powder in a dry mixer and stir them thoroughly for 1 hour, and dry them in a dryer for 3 hours;

[0045] Then, put the fully dried and stirred powder into the acetone solution, and wet mix for 4 hours;

[0046] Next, place the wet-mixed raw materials in an oven and heat to remove the acetone solvent. After the acetone solvent is removed, place the raw materials after the solvent removal in a hopper and heat until the temperature of the raw materials is 130° C.;

[0047] Next, feed the raw material at 130°C into the mold with the heating device through the feeding device;

[0048] Then, start the press, press molding;

[0049] Next, take the formed workpiece out of the mold, because the workpiece has a certain temperature, it can be cut and processed, and then put the mold blank into the CNC equip...

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 discloses a preparation process of an alloy mold core for high-temperature alloy monocrystal blade precision casting. Raw materials of the alloy mold core comprise metal powder and nonmetal powder; the metal powder is mainly prepared from cast iron fibers, tungsten powder, nickel powder, molybdenum powder and manganese sulfide powder in a mixed manner; and the nonmetal powder is mainly prepared from graphite powder, imine, polyethylene glycol, polyvinyl alcohol and ethylene bis stearamide in a mixed manner. The preparation process of the alloy mold core includes the following steps that the metal powder and the nonmetal powder are mixed in the proportion of 5:2; then the mixed powder is thrown into an acetone solution; an acetone solvent is removed in a heating manner; heating continues till 130 DEG C, and the mixture is fed into a mold to be pressed and formed; next, a machined mold blank is placed into a vacuum furnace to be subjected to degreasing, and sintering and forming are performed through hot pressing; and finally, the formed product is placed in a numerical control electrolytic machine tool to be subjected to precise electrolytic machining, and the alloy mold core is acquired. The alloy mold core acquired through the method is high in percent of pass of finished products, and the product is resistant to high temperature.

Description

technical field [0001] The invention belongs to the technical field of production and processing of alloy mold cores, and in particular relates to a preparation process of alloy mold cores for precision casting of high-temperature alloy single crystal blades. Background technique [0002] In the existing precision casting process of high-temperature alloy hollow turbine blades, high-temperature-resistant ceramic materials are generally used to manufacture mold cores. Due to the extremely inactive chemical properties of ceramics, after precision casting, the removal of the mold core has become an insurmountable gap that restricts product design and manufacturing processes. [0003] At the same time, since ceramics are hard and brittle materials, and the existing cavity design of hollow core blades is getting thinner and thinner, processing ultra-thin ceramic mold cores is a great challenge. When casting finished products, the scrap rate of the demoulding step of the alloy mo...

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 Patents(China)
IPC IPC(8): B22F3/02B22F3/14B22F5/00B23H5/08
CPCB22F3/02B22F3/1007B22F3/14B22F5/007B22F2003/145B22F2999/00B23H5/08B22F2201/20
Inventor 李庆
Owner 李庆
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