JPS5797839A - Production of mold and core - Google Patents

Production of mold and core

Info

Publication number
JPS5797839A
JPS5797839A JP17201680A JP17201680A JPS5797839A JP S5797839 A JPS5797839 A JP S5797839A JP 17201680 A JP17201680 A JP 17201680A JP 17201680 A JP17201680 A JP 17201680A JP S5797839 A JPS5797839 A JP S5797839A
Authority
JP
Japan
Prior art keywords
mold
gaseous
sand
core
box
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
JP17201680A
Other languages
Japanese (ja)
Inventor
Toshiro Aiga
Toshiaki Maeda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17201680A priority Critical patent/JPS5797839A/en
Publication of JPS5797839A publication Critical patent/JPS5797839A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/123—Gas-hardening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To harden molding sand in a short time, shorten gas passing time and improve the efficiency of molding work by putting a molded mold or core mold in an evacuated state and introducing a gaseous substance. CONSTITUTION:Mulled sand 3 molded in a mold or a box 1 is covered with a film 4 and is isolated from the atmosphere, whereby a kind of vacuum chamber is created. The clearances in the sand 3 are evacuated uniformly, after which CO2 is passed and therefore the gaseous CO2 passes uniformly through the sand. Since compressed air is introduced into a pipe 6 during passing of the gas, the CO2 conducted into the mold or box 1 flows in the direction of the pipe 5 and the entire part of the mold or the core reacts with the gaseous CO2 and hardens in a short time; at the same time, the gaseous CO2 escaping into air in an unreacted state is reduced. The similar effect is also obtained when this is adapted to a cold box method.
JP17201680A 1980-12-08 1980-12-08 Production of mold and core Pending JPS5797839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17201680A JPS5797839A (en) 1980-12-08 1980-12-08 Production of mold and core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17201680A JPS5797839A (en) 1980-12-08 1980-12-08 Production of mold and core

Publications (1)

Publication Number Publication Date
JPS5797839A true JPS5797839A (en) 1982-06-17

Family

ID=15933956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17201680A Pending JPS5797839A (en) 1980-12-08 1980-12-08 Production of mold and core

Country Status (1)

Country Link
JP (1) JPS5797839A (en)

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