JPS56139256A - Production of sand core for pressure casting - Google Patents

Production of sand core for pressure casting

Info

Publication number
JPS56139256A
JPS56139256A JP4170580A JP4170580A JPS56139256A JP S56139256 A JPS56139256 A JP S56139256A JP 4170580 A JP4170580 A JP 4170580A JP 4170580 A JP4170580 A JP 4170580A JP S56139256 A JPS56139256 A JP S56139256A
Authority
JP
Japan
Prior art keywords
core
coating layer
sand
binder
sand core
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
JP4170580A
Other languages
Japanese (ja)
Other versions
JPS5759013B2 (en
Inventor
Takeshi Imura
Shoichi Yoshikawa
Shigemitsu Nakabayashi
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP4170580A priority Critical patent/JPS56139256A/en
Publication of JPS56139256A publication Critical patent/JPS56139256A/en
Publication of JPS5759013B2 publication Critical patent/JPS5759013B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To produce a core which is highly pressure resistant and is easily collapsible by heat treatment by using a thermosetting resin as a binder.
CONSTITUTION: Silica sand, zircon sand, etc. are used as aggregate for a sand core, and a binder for shell molds of a phenolic resin etc. is used as an org. binder. These constituting parts are mixed and a sand core is molded. Next, a slurry consisting of an aqueous alkaline soln. prepd. by mixing powdery refractories and a water-soluble thermosetting resin is coated on the surface of this and core, and this is dried and calcined, whereby the 1st coating layer is formed. Next, an aqueous soln. contg. synthetic mica is coated on the surface of the sand core having been formed with this 1st coating layer and is dried, whereby the 2nd coating layer is formed. In the 2nd coating layer, synthetic mica sticks by assuming a laminar state, and this obviates the occurrence of the disadvantage that the molten metal penetrates in the core.
COPYRIGHT: (C)1981,JPO&Japio
JP4170580A 1980-03-31 1980-03-31 Production of sand core for pressure casting Granted JPS56139256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4170580A JPS56139256A (en) 1980-03-31 1980-03-31 Production of sand core for pressure casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4170580A JPS56139256A (en) 1980-03-31 1980-03-31 Production of sand core for pressure casting

Publications (2)

Publication Number Publication Date
JPS56139256A true JPS56139256A (en) 1981-10-30
JPS5759013B2 JPS5759013B2 (en) 1982-12-13

Family

ID=12615834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4170580A Granted JPS56139256A (en) 1980-03-31 1980-03-31 Production of sand core for pressure casting

Country Status (1)

Country Link
JP (1) JPS56139256A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6329642U (en) * 1986-08-04 1988-02-26
JPS63171245A (en) * 1987-01-08 1988-07-15 Ryobi Ltd Production of collapsible core
JPS63199043A (en) * 1987-02-13 1988-08-17 Ube Ind Ltd Production of sand core for die casting
JPH0293057U (en) * 1989-01-04 1990-07-24
US7575039B2 (en) 2003-10-15 2009-08-18 United Technologies Corporation Refractory metal core coatings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6329642U (en) * 1986-08-04 1988-02-26
JPS63171245A (en) * 1987-01-08 1988-07-15 Ryobi Ltd Production of collapsible core
JPS63199043A (en) * 1987-02-13 1988-08-17 Ube Ind Ltd Production of sand core for die casting
JPH0429451B2 (en) * 1987-02-13 1992-05-19
JPH0293057U (en) * 1989-01-04 1990-07-24
US7575039B2 (en) 2003-10-15 2009-08-18 United Technologies Corporation Refractory metal core coatings

Also Published As

Publication number Publication date
JPS5759013B2 (en) 1982-12-13

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