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 furnace

Info

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
Application number
JP23395787A
Other languages
Japanese (ja)
Other versions
JPH0445752B2 (en
Inventor
Yoichi Oshima
Shuichi Baba
No Kawakami
Osamu Sekiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sky Aluminium Co Ltd
Original Assignee
Sky Aluminium Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sky Aluminium Co Ltd filed Critical Sky Aluminium Co Ltd
Priority to JP23395787A priority Critical patent/JPS6479583A/en
Publication of JPS6479583A publication Critical patent/JPS6479583A/en
Publication of JPH0445752B2 publication Critical patent/JPH0445752B2/ja
Granted legal-status Critical Current

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.
JP23395787A 1987-09-18 1987-09-18 Method of predicting lifetime of refractory material of crucible type induction furnace Granted JPS6479583A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4880406A (en) * 1972-01-31 1973-10-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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