JPS6479583A - Method of predicting lifetime of refractory material of crucible type induction furnace - Google Patents
Method of predicting lifetime of refractory material of crucible type induction furnaceInfo
- Publication number
- JPS6479583A JPS6479583A JP23395787A JP23395787A JPS6479583A JP S6479583 A JPS6479583 A JP S6479583A JP 23395787 A JP23395787 A JP 23395787A JP 23395787 A JP23395787 A JP 23395787A JP S6479583 A JPS6479583 A JP S6479583A
- Authority
- JP
- Japan
- Prior art keywords
- refractory material
- thermocouple
- crucible
- layer
- refractory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
PURPOSE: To predict the life of a lining refractory material, by inserting a thermocouple element between the lining refractory material that forms an inner wall and an outside induction coil. CONSTITUTION: A refractory material 2 constructing a crucible 1 is an alumina system refractory or the like, for example. In the outer peripheral side of this, a heat insulating material layer 3 of mica paper or the like and a cement layer 4 of alumina cement or the like are formed, and an induction coil 5 is wound around the outside of it. Thermocouple elements 7a to 7e of CA thermocouple or the like are inserted between the heat insulating material layer 3 and the cement layer 4, and they are arranged in the circumferential and vertical directions of the crucible 1 at predetermined intervals. The refractory material 2 has a powder bed in its full thickness initially. If it is sintered from the inner surface side gradually, its thermal conductivity is increased. Therefore, the detection temperature of the thermocouple element is increased, as the sintering of the refractory material 2 proceeds. If a specific temperature is reached, the refractory material is put into a condition in that it is completely sintered. Moreover, cracks tend to be generated easily, and the point can be determined to be the termination of its life.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23395787A JPS6479583A (en) | 1987-09-18 | 1987-09-18 | Method of predicting lifetime of refractory material of crucible type induction furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23395787A JPS6479583A (en) | 1987-09-18 | 1987-09-18 | Method of predicting lifetime of refractory material of crucible type induction furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6479583A true JPS6479583A (en) | 1989-03-24 |
JPH0445752B2 JPH0445752B2 (en) | 1992-07-27 |
Family
ID=16963276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23395787A Granted JPS6479583A (en) | 1987-09-18 | 1987-09-18 | Method of predicting lifetime of refractory material of crucible type induction furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6479583A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4880406A (en) * | 1972-01-31 | 1973-10-27 |
-
1987
- 1987-09-18 JP JP23395787A patent/JPS6479583A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4880406A (en) * | 1972-01-31 | 1973-10-27 |
Also Published As
Publication number | Publication date |
---|---|
JPH0445752B2 (en) | 1992-07-27 |
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