Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-grain selector devices, methods for manufacturing columnar grained articles using the selector devices, and columnar grained articles manufactured using the selector devices

A columnar grain and selector technology, which is applied in the manufacturing field of directionally solidified metal parts, can solve the problems of complicated insert casting and increased weight.

Pending Publication Date: 2021-06-04
GENERAL ELECTRIC CO
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these solutions add weight and complicate the way the blade is poured

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
  • Multi-grain selector devices, methods for manufacturing columnar grained articles using the selector devices, and columnar grained articles manufactured using the selector devices
  • Multi-grain selector devices, methods for manufacturing columnar grained articles using the selector devices, and columnar grained articles manufactured using the selector devices
  • Multi-grain selector devices, methods for manufacturing columnar grained articles using the selector devices, and columnar grained articles manufactured using the selector devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The inventive subject matter described herein relates to multi-grain selector devices that can be used to form and orient posts of single-grain metal or metal alloy components formed using directional solidification. The inventive subject matter also relates to directional solidification casting processes using such multi-grain selector devices, and columnar grain articles or objects formed using the multi-grain selector devices and / or casting processes described herein.

[0056] Multi-grain selector devices can be used to form multi-grain columnar structures or articles in which metal (or metal alloy) grains are oriented at small angles relative to adjacent (eg, adjacent) grains. For example, adjacent or adjacent grains of a structure may be elongated in different directions that are nearly parallel to each other. In various embodiments, the grains may differ in orientation by less than fifteen degrees, less than ten degrees, or less than five degrees. Columnar articl...

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

A multi-grain selector device includes an outer body having exterior surfaces. The outer body includes a cooling side configured to face a cooling plate of a casting furnace and an opposite mold side configured to face into a mold. The outer body includes an array of multiple grain selector columns each formed from two or more transversely oriented, elongated channels that are fluidly coupled with each other in an end-to-end arrangement oriented along a growth direction that extends from the cooling side of the outer body toward the mold side of the outer body. The selector columns extend to growth openings on the mold side of the outer body. Each of the selector columns is configured to form a single grain column out of the corresponding growth opening that is part of a columnar grained article to be formed in the mold that grows along the growth direction.

Description

technical field [0001] The subject matter described herein relates to the fabrication of directionally solidified metal parts. Background technique [0002] Many parts can be formed using directional solidification techniques. Directional solidification (DS) techniques enable solidification of materials with grains aligned in a specific direction. Oriented and single crystal structures can be formed to improve the mechanical and metallurgical properties of cast materials. These structures can be prepared by casting a melt of the alloy. The heat transfer conditions during solidification of the casting are controlled so that the solidification front advances in the growth direction to produce primary columnar crystals or grains and to avoid or reduce the nucleation of secondary grains in the melt. [0003] However, directional solidification is not without drawbacks. Hot tearing can occur during casting when the metal cools between the liquidus and solidus temperatures of ...

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): B22D27/04
CPCB22D27/045
Inventor A·M·汤普森A·F·汤普森J·S·马尔特
Owner GENERAL ELECTRIC CO