JPS5564944A - Making method of mold for vacuum casting - Google Patents

Making method of mold for vacuum casting

Info

Publication number
JPS5564944A
JPS5564944A JP13677378A JP13677378A JPS5564944A JP S5564944 A JPS5564944 A JP S5564944A JP 13677378 A JP13677378 A JP 13677378A JP 13677378 A JP13677378 A JP 13677378A JP S5564944 A JPS5564944 A JP S5564944A
Authority
JP
Japan
Prior art keywords
plastic film
heat
binder
layer
mold
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
JP13677378A
Other languages
Japanese (ja)
Inventor
Fukuo Kuwata
Koji Yasukuni
Kazuo Baba
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
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP13677378A priority Critical patent/JPS5564944A/en
Publication of JPS5564944A publication Critical patent/JPS5564944A/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
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE:To spray heat-resistant material powder, improve the heat resistance and tightness of the mold and prevent casting defects by heating the plastic film which has transferred to the refractory material side when pressure is reduced. CONSTITUTION:After making of the mold, the plastic film 6 having transferred from the pattern to the refractory material 8 side is heated to soften. Heat-resistant material powder which does not contain any binder is sprayed to the state 9 wherein the plastic film 6 has made snugly fitting to the surface layer of the refractory material 8. Then, the plastic film 6 plays the roll of a binder and forms a layer 7 mixed with the heat-resistant material powder. The plastic film 6 is hot-melted and at the same time the heat-resistant material powder containing a thermosetting binder is sprayed. Heat-resistant meterial powder is sprayed onto the layer 12 formed by the plastic film which has melted and penetrated therein as a binder, whereby a layer 11 is formed. By forming the double surface layers in this way, the effect may be improved further.
JP13677378A 1978-11-08 1978-11-08 Making method of mold for vacuum casting Pending JPS5564944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13677378A JPS5564944A (en) 1978-11-08 1978-11-08 Making method of mold for vacuum casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13677378A JPS5564944A (en) 1978-11-08 1978-11-08 Making method of mold for vacuum casting

Publications (1)

Publication Number Publication Date
JPS5564944A true JPS5564944A (en) 1980-05-16

Family

ID=15183168

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13677378A Pending JPS5564944A (en) 1978-11-08 1978-11-08 Making method of mold for vacuum casting

Country Status (1)

Country Link
JP (1) JPS5564944A (en)

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