JPS5770078A - Manufacture of mold - Google Patents

Manufacture of mold

Info

Publication number
JPS5770078A
JPS5770078A JP14866880A JP14866880A JPS5770078A JP S5770078 A JPS5770078 A JP S5770078A JP 14866880 A JP14866880 A JP 14866880A JP 14866880 A JP14866880 A JP 14866880A JP S5770078 A JPS5770078 A JP S5770078A
Authority
JP
Japan
Prior art keywords
mold
gaseous
block
investment casting
cavity
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.)
Pending
Application number
JP14866880A
Other languages
Japanese (ja)
Inventor
Yasuji Morita
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Priority to JP14866880A priority Critical patent/JPS5770078A/en
Publication of JPS5770078A publication Critical patent/JPS5770078A/en
Pending legal-status Critical Current

Links

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To prevent surface oxidation of a casting in a mold surely by annihilating an investment casting patten than substituting the air in the cavity with gaseous Ar in the manufacture of a ceramic shell mold.
CONSTITUTION: After an investment casting pattern of a prescribed shape is formed, a refractory porous block 1 for blowing of gaseous Ar is to the bottom end part thereof, and a buried pipe is connected to the block 1. The investment casting pattern contg. this block 1 is subjected to coating and sanding reiteratively, whereby a ceramic shell mold 2 of required thickness is formed. This mold 2 is dried and fired according to a conventional method to annihilate the investment casting pattern, after which a porous ring 4 for gaseous Ar sealing is put on the open surface in the upper part of the mold. Gaseous Ar is blown continuously under suitable gaseous pressure through the block 1 and the ring 4 into the cavity of the mold 2 since prior to pouring until the completion of the pouring.
COPYRIGHT: (C)1982,JPO&Japio
JP14866880A 1980-10-21 1980-10-21 Manufacture of mold Pending JPS5770078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14866880A JPS5770078A (en) 1980-10-21 1980-10-21 Manufacture of mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14866880A JPS5770078A (en) 1980-10-21 1980-10-21 Manufacture of mold

Publications (1)

Publication Number Publication Date
JPS5770078A true JPS5770078A (en) 1982-04-30

Family

ID=15457942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14866880A Pending JPS5770078A (en) 1980-10-21 1980-10-21 Manufacture of mold

Country Status (1)

Country Link
JP (1) JPS5770078A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174264A (en) * 1983-03-18 1984-10-02 Kubota Ltd Casting method in inert gaseous atmosphere

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312726A (en) * 1976-07-22 1978-02-04 Kubota Ltd Method of preventing oxidation of casting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312726A (en) * 1976-07-22 1978-02-04 Kubota Ltd Method of preventing oxidation of casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174264A (en) * 1983-03-18 1984-10-02 Kubota Ltd Casting method in inert gaseous atmosphere

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