JPS55133846A - Casting method - Google Patents

Casting method

Info

Publication number
JPS55133846A
JPS55133846A JP4230479A JP4230479A JPS55133846A JP S55133846 A JPS55133846 A JP S55133846A JP 4230479 A JP4230479 A JP 4230479A JP 4230479 A JP4230479 A JP 4230479A JP S55133846 A JPS55133846 A JP S55133846A
Authority
JP
Japan
Prior art keywords
sand
casting
molding
mold
molten metal
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
JP4230479A
Other languages
Japanese (ja)
Inventor
Seiichiro Watabe
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.)
TOBATA TEKKO KK
Original Assignee
TOBATA TEKKO KK
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 TOBATA TEKKO KK filed Critical TOBATA TEKKO KK
Priority to JP4230479A priority Critical patent/JPS55133846A/en
Publication of JPS55133846A publication Critical patent/JPS55133846A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To obtain the sand for the mold of high strength at the casting and superior collapsing property after molding by substituting part of the molding sand of the portion not in direct contact with molten metal with the specific bagged sand.
CONSTITUTION: Ordinary binder-containing sand 4 is packed around the portions in direct contact with molten metal, such as the cavity 2 and cross gate 3 formed by patterns in flasks 1 and the sand 4' which is sealed in the bag composed of material readily breakable by heat or artificially and which does not contain any binder is packed in the other portions. Even when a core 5 is required, the bagged sand 4' is used for its central part. The packing pressure in the bag is regulated to positive or negative pressure depending upon the object. This method enables the mold of the sufficient strength at the casting to be formed and makes the taking out of the casting easy because the bags break after the molding.
COPYRIGHT: (C)1980,JPO&Japio
JP4230479A 1979-04-06 1979-04-06 Casting method Pending JPS55133846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4230479A JPS55133846A (en) 1979-04-06 1979-04-06 Casting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4230479A JPS55133846A (en) 1979-04-06 1979-04-06 Casting method

Publications (1)

Publication Number Publication Date
JPS55133846A true JPS55133846A (en) 1980-10-18

Family

ID=12632274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4230479A Pending JPS55133846A (en) 1979-04-06 1979-04-06 Casting method

Country Status (1)

Country Link
JP (1) JPS55133846A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725244A (en) * 1980-07-24 1982-02-10 Kubota Ltd Manufacture of mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5231928A (en) * 1975-06-19 1977-03-10 Kubota Ltd Method of forming mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5231928A (en) * 1975-06-19 1977-03-10 Kubota Ltd Method of forming mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725244A (en) * 1980-07-24 1982-02-10 Kubota Ltd Manufacture of mold

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