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Method for forming casting molds

A technology for molds and mixtures, used in the manufacture of tools, casting equipment, tools, etc., to solve problems such as insufficient reproduction of fine surface structures

Inactive Publication Date: 2008-01-02
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] While investment casting provides improved detail and the ability to form casting molds using the immersion process, the investment casting process, as well as other ceramic mold-forming processes, is insufficient to replicate fine surface structures

Method used

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  • Method for forming casting molds
  • Method for forming casting molds
  • Method for forming casting molds

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Embodiment Construction

[0023] Disclosed herein is a method for forming surface features on a casting mold that includes, after forming the mold, depositing a metallic and / or ceramic material on the surface of the casting mold to form the desired surface features thereon. The material can then be heated to harden and bond it to the casting mold. The mold is then used to cast the article, wherein the surface features formed within the casting mold form the inverse geometry in the cast part.

[0024] A method of forming surface features on a ceramic casting mold begins with constructing the mold. The mold can be formed via ceramic forming methods including investment casting, slip casting, gel casting, sand casting, plaster casting, die casting, injection molding, slurry injection, powder forming (compression), reaction forming, colloidal Casting methods of forming, cold isostatic pressing, hot isostatic pressing and combinations comprising at least one of said methods. The mold is configured such th...

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Abstract

Disclosed herein are methods for forming casting molds. In one embodiment, a method for forming a mold comprises casting a mold having a cavity surface, forming surface features on the cavity surface, wherein the surface features comprise a mixture, and heat treating the mixture. In another embodiment an article is disclosed.

Description

technical field [0001] The present invention relates generally to casting, and more particularly to making molds for use in the casting process. Background technique [0002] The casting process is widely used in the formation of items. In general, a casting process can be described as any process in which a flowable material is introduced into a mold, solidified therein, and then removed in solid form. Exemplary casting processes include investment casting, slip casting, gel casting, sand casting, plaster casting, die casting, injection molding, slurry injection, powder forming (compression), reaction forming, colloid forming, cold isostatic pressing , hot isostatic pressing, etc. But investment casting in particular is widely used because investment cores allow for the formation of cast articles with greater detail and more efficient fabrication of casting molds than other casting methods. [0003] The investment casting method begins by making a sacrificial wax pattern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C23/02B22C9/04
CPCB22C9/22B22C9/00
Inventor R·S·邦克C·U·哈德维克
Owner GENERAL ELECTRIC CO