JPS55130358A - Mold molding method - Google Patents

Mold molding method

Info

Publication number
JPS55130358A
JPS55130358A JP3693279A JP3693279A JPS55130358A JP S55130358 A JPS55130358 A JP S55130358A JP 3693279 A JP3693279 A JP 3693279A JP 3693279 A JP3693279 A JP 3693279A JP S55130358 A JPS55130358 A JP S55130358A
Authority
JP
Japan
Prior art keywords
casting
core grid
shrinkage
shrinkable material
combination
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
JP3693279A
Other languages
Japanese (ja)
Inventor
Toshiyuki Satake
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12483523&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS55130358(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3693279A priority Critical patent/JPS55130358A/en
Publication of JPS55130358A publication Critical patent/JPS55130358A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mold Materials And Core Materials (AREA)
  • Casting Devices For Molds (AREA)

Abstract

PURPOSE: To achieve the prevention of cracking of the casting by adding shrinkable material into molding sand or using the same in combination with mold core grid or using the same to the both of these simultaneously.
CONSTITUTION: When shrinkable material is added to molding sand, the expansion of sand particles 1 is offset by the shrinkage of the layer of a binder 2 and the shrinkable material 4 between the sand particles 1 and further when the shrinkage of metal 3 begins, the binder 2 and material 4 carbonize to have reduced volume, thus acting in the direction of not hampering the shrinkage of the metal 3 and therefore the crack-free casting is obtained. In addition, when said material is used in combination with a core grid, the expansion of the core grid 12 is absorbed by the shrinkable material 16 in the process that the casting 11 solidifies and at the same time, the shrinking of the casting 11 is also absorbed by the material 16 and therefore the sound crack-free casting 11 may be obtained. If the addition to the molding sand and the combination use with the core grid are employed simultaneously, the much higher effect may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP3693279A 1979-03-30 1979-03-30 Mold molding method Pending JPS55130358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3693279A JPS55130358A (en) 1979-03-30 1979-03-30 Mold molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3693279A JPS55130358A (en) 1979-03-30 1979-03-30 Mold molding method

Publications (1)

Publication Number Publication Date
JPS55130358A true JPS55130358A (en) 1980-10-09

Family

ID=12483523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3693279A Pending JPS55130358A (en) 1979-03-30 1979-03-30 Mold molding method

Country Status (1)

Country Link
JP (1) JPS55130358A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6719835B2 (en) 2002-11-08 2004-04-13 Wyo-Ben, Inc. Sand casting foundry composition and method using shale as anti-veining agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6719835B2 (en) 2002-11-08 2004-04-13 Wyo-Ben, Inc. Sand casting foundry composition and method using shale as anti-veining agent

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