Browse Prior Art Database

Refractory for Crucibles

IP.com Disclosure Number: IPCOM000095889D
Original Publication Date: 1964-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Alstad, JK: AUTHOR [+3]

Abstract

Cracking of crucibles during induction heating of metals is substantially eliminated by supporting the metal on a refractory material.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Refractory for Crucibles

Cracking of crucibles during induction heating of metals is substantially eliminated by supporting the metal on a refractory material.

Crucible 2, disposed within induction heating coils 4, contains refractory material 6, such as alumina, on the order of sixty mesh or finer. Metal 8 is disposed within a depression in the surface of material 6. It is unnecessary to specially compact or form material 6 prior to disposing metal 8 on it.

During the course of heating, a thin support layer 12 is formed between molten metal 8 and material 6. Layer 12 is sufficiently strong to support and contain metal 8. Layer 12 is composed of metallic oxide or sintered refractory material.

This arrangement greatly alleviates the chronic problem of cracked crucibles in induction heating by easily and effectively insulating the outer crucible from contact with the molten metal.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]