WO1998016333B1 - Method and apparatus for manufacturing a sand mold - Google Patents
Method and apparatus for manufacturing a sand moldInfo
- Publication number
- WO1998016333B1 WO1998016333B1 PCT/DK1997/000445 DK9700445W WO9816333B1 WO 1998016333 B1 WO1998016333 B1 WO 1998016333B1 DK 9700445 W DK9700445 W DK 9700445W WO 9816333 B1 WO9816333 B1 WO 9816333B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molding sand
- pattern
- imprint
- cast
- sand
- Prior art date
Links
- 239000004576 sand Substances 0.000 title claims abstract 5
- 238000004519 manufacturing process Methods 0.000 title claims abstract 4
- 239000003110 molding sand Substances 0.000 claims abstract 11
- 230000003068 static Effects 0.000 claims abstract 6
- 238000002604 ultrasonography Methods 0.000 claims abstract 4
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract 3
- 230000000295 complement Effects 0.000 claims abstract 3
Abstract
A method and an apparatus are serving for manufacturing a sand mold for pouring a metallic melt of e.g. cast iron. A pattern (7) having a configuration complementary to the castings wished to be cast, forms an imprint in a volume of molding sand (5), as the molding sand during this is acted upon by both a static pressure from a squeeze plate (9) and by ultrasound from an ultrasonic generator (8). In the sand mold can be cast castings with fewer fins and a more even and smoother surface than known per se.
Claims
1. Method of manufacturing a sand .mold for pouring a metallic melt of e.g. cast iron, whereby a pattern in a volume of molding sand forms an imprint having a configuration complementary to the castings wished to be cast, and the molding sand is acted upon with ultrasound during the forming of the imprint, characterized in that the ultrasound is generated by at least one ultrasonic generator which acts upon the molding sand via the pattern.
2. Method according to claim 1, characterized in that the molding sand is acted upon by an external static power during the forming of the imprint.
3. Method according to claim 1 or 2 , characterized in that the static power is transmitted to the molding sand via a separate squeeze plate.
4. Method according to claim 1, 2 or 3 characterized in that the static power is transmitted to the molding sand via the pattern.
5. Method according to each of the claims 1-4, characterized in that the static power is transmitted to the molding sand via both a separate squeeze plate and the pattern.
6. Method according to each of the claims 1-5, characterized in that the ultrasonic frequency is in the range of 8 and 80 kHz, especially between 18 and 50 kHz.
7. Method according to each of the claims 1-6, characterized in that the ultrasonic amplitude is in the range of 1 and 100 μ, especially between 5 and 20 μ.
8. Method according to each of the claims 1-7, characterized in that the specific static pressure is in the range of 0,2 and 15 kg/cm2, preferably between 0,5 and 8 kg/cm2 and especially between 1 and 5 kg/cm2.
9. Apparatus for manufacturing a sand mold for pouring a metallic melt of e.g. cast iron in an imprint formed by a pattern in a volume of molding sand and having a configuration complementary to the castings wished to be cast, characterized in that it comprises an ultrasonic generator for acting upon the molding sand with ultrasound, and that the ultrasonic generator is connected to the pattern.
10. Apparatus according to claim 9, where the mold is a core and the pattern is a core box, characterized in that the ultrasonic generator is connected to the core box.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL97332780A PL332780A1 (en) | 1996-10-14 | 1997-10-13 | Method of and apparatus for making foundry moulds |
| AU45507/97A AU4550797A (en) | 1996-10-14 | 1997-10-13 | Method and apparatus for manufacturing a sand mold |
| EP97943794A EP0949980A1 (en) | 1996-10-14 | 1997-10-13 | Method and apparatus for manufacturing a sand mold |
| JP51792698A JP2001504394A (en) | 1996-10-14 | 1997-10-13 | Method and apparatus for manufacturing sand molds |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK1139/96 | 1996-10-14 | ||
| DK113996 | 1996-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998016333A1 WO1998016333A1 (en) | 1998-04-23 |
| WO1998016333B1 true WO1998016333B1 (en) | 1998-06-18 |
Family
ID=8101461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK1997/000445 WO1998016333A1 (en) | 1996-10-14 | 1997-10-13 | Method and apparatus for manufacturing a sand mold |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0949980A1 (en) |
| JP (1) | JP2001504394A (en) |
| AU (1) | AU4550797A (en) |
| PL (1) | PL332780A1 (en) |
| WO (1) | WO1998016333A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10325176B3 (en) * | 2003-06-04 | 2004-06-09 | Laempe + Gies Gmbh | Production of cores and/or molds for foundries comprises impinging a molding tool and using ultrasound waves to excite its oscillations |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3717427A (en) * | 1970-12-03 | 1973-02-20 | A Bodine | Sonic apparatus for working plastic material |
| DE2923102A1 (en) * | 1979-06-07 | 1981-01-08 | Arenco Bmd Maschfab | METHOD FOR COMPRESSING FOUNDRY SAND AND MOLDING MACHINE FOR CARRYING OUT THE METHOD |
| CH642288A5 (en) * | 1980-02-18 | 1984-04-13 | Fischer Ag Georg | METHOD AND DEVICE FOR COMPRESSING MOLDING MATERIAL, ESPECIALLY FOR CASTING MOLDS. |
| EP0062331A1 (en) * | 1981-04-02 | 1982-10-13 | BMD Badische Maschinenfabrik Durlach GmbH | Method and apparatus for pneumatically compacting moulding sand |
| FR2675710B1 (en) * | 1991-04-29 | 1993-08-06 | Oreal | COMPACTION METHOD ON A SUPPORT OF A POWDER MIXTURE AND MAKEUP APPLICATOR CONSISTING OF A SUPPORT CARRYING A COMPACT POWDER MIXTURE PELLET. |
-
1997
- 1997-10-13 JP JP51792698A patent/JP2001504394A/en active Pending
- 1997-10-13 WO PCT/DK1997/000445 patent/WO1998016333A1/en not_active Application Discontinuation
- 1997-10-13 AU AU45507/97A patent/AU4550797A/en not_active Abandoned
- 1997-10-13 PL PL97332780A patent/PL332780A1/en unknown
- 1997-10-13 EP EP97943794A patent/EP0949980A1/en not_active Withdrawn
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