JPS5772749A - Mold material - Google Patents

Mold material

Info

Publication number
JPS5772749A
JPS5772749A JP14820180A JP14820180A JPS5772749A JP S5772749 A JPS5772749 A JP S5772749A JP 14820180 A JP14820180 A JP 14820180A JP 14820180 A JP14820180 A JP 14820180A JP S5772749 A JPS5772749 A JP S5772749A
Authority
JP
Japan
Prior art keywords
magnesia
temps
calcined
mold material
generally called
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
JP14820180A
Other languages
Japanese (ja)
Other versions
JPS6139141B2 (en
Inventor
Teruo Uchiyama
Keiji Nishimura
Osamu Iwamoto
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.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
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 Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP14820180A priority Critical patent/JPS5772749A/en
Publication of JPS5772749A publication Critical patent/JPS5772749A/en
Publication of JPS6139141B2 publication Critical patent/JPS6139141B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To provide a mold material of which the mold surface in contact with wax or agar is of extremely fine and smooth texture and has high surface strength by making combination use of magnesia of different calcining temps.
CONSTITUTION: A phosphate type mold material consisting of the combination use of magnesia calcined at above 1,500°C and magnesia calcined at below 1,200°C as metallic oxide. One of the magnesia of different calcining temps. is the compact magnesia which is vitrified or melted at above 1,500°C and in which periclase crystal is grown and developed, and is generally called dead-burned magnesia or electrofused magnesia. The other one is the porous and cryptocrystaline magnesia calcined at low temps. below 1,200°C, and is generally called light-burned magnesia or activated magnesia.
COPYRIGHT: (C)1982,JPO&Japio
JP14820180A 1980-10-24 1980-10-24 Mold material Granted JPS5772749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14820180A JPS5772749A (en) 1980-10-24 1980-10-24 Mold material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14820180A JPS5772749A (en) 1980-10-24 1980-10-24 Mold material

Publications (2)

Publication Number Publication Date
JPS5772749A true JPS5772749A (en) 1982-05-07
JPS6139141B2 JPS6139141B2 (en) 1986-09-02

Family

ID=15447513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14820180A Granted JPS5772749A (en) 1980-10-24 1980-10-24 Mold material

Country Status (1)

Country Link
JP (1) JPS5772749A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61273236A (en) * 1985-05-28 1986-12-03 Kawasaki Steel Corp Durable casting mold
US5013363A (en) * 1989-02-06 1991-05-07 Olympus Optical Co., Ltd. Mold for the casting of glass ceramic
JP2007022902A (en) * 2005-06-17 2007-02-01 Ube Ind Ltd Cryptocrystalline magnesia and method for producing the same
US20180254683A1 (en) * 2017-03-01 2018-09-06 Fanuc Corporation Motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61273236A (en) * 1985-05-28 1986-12-03 Kawasaki Steel Corp Durable casting mold
US5013363A (en) * 1989-02-06 1991-05-07 Olympus Optical Co., Ltd. Mold for the casting of glass ceramic
JP2007022902A (en) * 2005-06-17 2007-02-01 Ube Ind Ltd Cryptocrystalline magnesia and method for producing the same
US20180254683A1 (en) * 2017-03-01 2018-09-06 Fanuc Corporation Motor

Also Published As

Publication number Publication date
JPS6139141B2 (en) 1986-09-02

Similar Documents

Publication Publication Date Title
ES436077A1 (en) Method of manufacturing refractory articles
JPS5772749A (en) Mold material
JPS645041A (en) Manufacture of ceramic body having superconducting circuit pattern
TW373190B (en) Dielectric ceramic composition
JPS54145000A (en) High dielectric system porcelain composite
JPS565331A (en) Oxide type magnetic material of low electric power loss for use in high temperature range
MTP920B (en) Candolumenescent material,its prepartros process and its use as a gaslamp mantle
JPS5717110A (en) Magnetic material having negative temperature coefficient
JPS5659668A (en) Manufacture of nonburnt magnesia carbon brick
JPS5632322A (en) Magnesia calcining method
JPS5735605A (en) Flux for desiliconizing hot iron
JPS5590471A (en) Manufacture of anisotropic oxide sintering material
JPS5353069A (en) Filter material and production process therefor
Konig FERRIC OXIDE AS STARTING MATERIAL FOR MAGNETIC COMPONENTS
JPS5376394A (en) Manufacturing of high-density ferrite
JPS5426500A (en) Oxide dielectric material
JPS54116305A (en) Porous sintered material
JPS5692159A (en) Manufacture of basic refractories containing lime in fine grain portion
JPS54158698A (en) High dielectric constant ceramic compound
JPS5423007A (en) Inductor of induction furnace of groove shape
JPS5742546A (en) Preparation of magnetite from iron slag
JPS57118018A (en) Magnesia suitable for magnesia cement and its manufacture
JPS55144420A (en) Manufacture of ferrite
Barooah et al. A NOTE ON RECENTLY LOCATED SILLIMANITE DEPOSIT IN KARBI ANGLONG DISTRICT, ASSAM
Zhang et al. Activated Sintering of Natural High Purity MgO--CaO Series Materials