JPS57159232A - Sand composition for casting - Google Patents

Sand composition for casting

Info

Publication number
JPS57159232A
JPS57159232A JP4397781A JP4397781A JPS57159232A JP S57159232 A JPS57159232 A JP S57159232A JP 4397781 A JP4397781 A JP 4397781A JP 4397781 A JP4397781 A JP 4397781A JP S57159232 A JPS57159232 A JP S57159232A
Authority
JP
Japan
Prior art keywords
molding sand
dicarboxylic acid
mold
acid derivs
binder
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
JP4397781A
Other languages
Japanese (ja)
Other versions
JPS5812095B2 (en
Inventor
Hideo Kunitomo
Masato Akiba
Kunio Mori
Kenji Yoshida
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.)
DIC Corp
Original Assignee
Dainippon Ink and Chemicals 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 Dainippon Ink and Chemicals Co Ltd filed Critical Dainippon Ink and Chemicals Co Ltd
Priority to JP4397781A priority Critical patent/JPS5812095B2/en
Publication of JPS57159232A publication Critical patent/JPS57159232A/en
Publication of JPS5812095B2 publication Critical patent/JPS5812095B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2246—Condensation polymers of aldehydes and ketones
    • B22C1/2253—Condensation polymers of aldehydes and ketones with phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE:To produce molds of good collapsing property after casting in the case of phenolic resin binders as well by adding a specific dicarboxylic acid derivs. to an org. binder for molding sand which forms the molds when hardened by heating. CONSTITUTION:0.5-30wt% metallic salt or metallic hydrogen salt of dicarboxylic acids having <=4 carbon numbers or their hydrate is used for 100pts.wt. a binder for molding sand. These dicarboxylic acid derivs. can be used independently or in combination of >=2 kinds. Here, the reason for limiting the number of C lies in the possibility that the atoms of O in the molecules of the compd. attain a large ratio. In fact, at C5 or above, the ability as an O supplying agent degrades and this is inadequate. With excessively small usage of the dicarboxylic acid derivs., the mold collapsibility degrades and conversely, if it is too much, the m.p. of molding sand lowers, resulting in decreased strength of the mold. The mold made by this molding sand has good collapsing property in spite of relatively low temp. of molten metal of Al, etc.
JP4397781A 1981-03-27 1981-03-27 Foundry sand composition Expired JPS5812095B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4397781A JPS5812095B2 (en) 1981-03-27 1981-03-27 Foundry sand composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4397781A JPS5812095B2 (en) 1981-03-27 1981-03-27 Foundry sand composition

Publications (2)

Publication Number Publication Date
JPS57159232A true JPS57159232A (en) 1982-10-01
JPS5812095B2 JPS5812095B2 (en) 1983-03-07

Family

ID=12678770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4397781A Expired JPS5812095B2 (en) 1981-03-27 1981-03-27 Foundry sand composition

Country Status (1)

Country Link
JP (1) JPS5812095B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877738A (en) * 1981-11-02 1983-05-11 Sumitomo Deyurezu Kk Coated sand and its production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183876A (en) * 1983-03-31 1984-10-19 三井造船株式会社 Underwater cleaning method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877738A (en) * 1981-11-02 1983-05-11 Sumitomo Deyurezu Kk Coated sand and its production
JPS6233016B2 (en) * 1981-11-02 1987-07-17 Sumitomo Durez Co

Also Published As

Publication number Publication date
JPS5812095B2 (en) 1983-03-07

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