FI902823A - Process for producing mold bodies of mold sand - Google Patents

Process for producing mold bodies of mold sand Download PDF

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Publication number
FI902823A
FI902823A FI902823A FI902823A FI902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A
Authority
FI
Finland
Prior art keywords
mould
press
mold
sand
depressions
Prior art date
Application number
FI902823A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI92294B (en
FI92294C (en
FI902823A0 (en
Inventor
Heinz Duester
Original Assignee
Fischer Ag Georg
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 Fischer Ag Georg filed Critical Fischer Ag Georg
Priority to FI902823A priority Critical patent/FI92294C/en
Publication of FI902823A0 publication Critical patent/FI902823A0/en
Publication of FI902823A publication Critical patent/FI902823A/en
Publication of FI92294B publication Critical patent/FI92294B/en
Application granted granted Critical
Publication of FI92294C publication Critical patent/FI92294C/en

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  • Casting Devices For Molds (AREA)

Abstract

The invention relates to a method for the manufacture of mould cores, according to which fresh sand is used as moulding sand in a press mould, and the fresh sand, with the use of a hydraulic press 1, undergoes pre-compression in the press mould followed by final compression. In this way it is possible to produce even complex mould cores efficiently and free from defects. The invention also relates to a press with pressing tool with mould depressions insertable into the press mould, and a press table. According to the invention the press comprises a hydraulic press 1, the pressing tool 8 of which with its mould depressions 9 has ducts 11 leading to the mould depressions 9 and alternately connectable to a negative or positive pressure. <IMAGE>
FI902823A 1990-06-06 1990-06-06 A method of making moldings from mold sand FI92294C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI902823A FI92294C (en) 1990-06-06 1990-06-06 A method of making moldings from mold sand

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI902823A FI92294C (en) 1990-06-06 1990-06-06 A method of making moldings from mold sand
FI902823 1990-06-06

Publications (4)

Publication Number Publication Date
FI902823A0 FI902823A0 (en) 1990-06-06
FI902823A true FI902823A (en) 1991-12-07
FI92294B FI92294B (en) 1994-07-15
FI92294C FI92294C (en) 1994-10-25

Family

ID=8530576

Family Applications (1)

Application Number Title Priority Date Filing Date
FI902823A FI92294C (en) 1990-06-06 1990-06-06 A method of making moldings from mold sand

Country Status (1)

Country Link
FI (1) FI92294C (en)

Also Published As

Publication number Publication date
FI92294B (en) 1994-07-15
FI92294C (en) 1994-10-25
FI902823A0 (en) 1990-06-06

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MM Patent lapsed
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Owner name: GEORG FISCHER AG