lost foam casting steps - english
DESCRIPTION
Lost Foam Casting Steps Presentation by Karel Cermak - Cermak Engineering (English Version)TRANSCRIPT
![Page 1: Lost Foam Casting Steps - English](https://reader033.vdocuments.net/reader033/viewer/2022061121/546ef392af795953298b5874/html5/thumbnails/1.jpg)
LOST FOAM LOST FOAM PROCESS CHAINPROCESS CHAIN
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Raw material with blowing agentSteam heat appliedEPS expanded factor ca. 30Density control critical
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
EPS beads filled into Al toolSteam heated to expand and fuseCooled to avoid distorsionAutomatic removal
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-0,5
-0,4
-0,3
-0,2
-0,1
0
0,1
0,2
0 100 200 300 400
Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Controlled shrinkageAccelerated processingRepeatability
time (mins)
With Stabilisation OvenWithout Stabilisation Oven
![Page 5: Lost Foam Casting Steps - English](https://reader033.vdocuments.net/reader033/viewer/2022061121/546ef392af795953298b5874/html5/thumbnails/5.jpg)
Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Hot melt glueShort “open time”RepeatabilityAccuracy
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Coating developed for lost foamRepeatabilityCeramic slurryPrecise viscosity/solids
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Removal of all moistureTemperature/humidity controlled
![Page 8: Lost Foam Casting Steps - English](https://reader033.vdocuments.net/reader033/viewer/2022061121/546ef392af795953298b5874/html5/thumbnails/8.jpg)
Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
![Page 9: Lost Foam Casting Steps - English](https://reader033.vdocuments.net/reader033/viewer/2022061121/546ef392af795953298b5874/html5/thumbnails/9.jpg)
Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Dry unbonded sandRain-fillUniformRate controllable
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
Fluidisation - CompactionPrecise control
ms0 25 50 75 100
5,0
2,5
0,0
-2,5
-5,0
Hz0 25 50 75 100
5
4
3
2
1
0
-1
Vibration Analysis FFT Analysis
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
EPS liquified and volatisedMetal replaces foamAll details reproduced
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Preexpansion
Moulding
Stabilisation
Glueing
Coating
Drying
Cluster Insertion
Sand Fill
Compaction
Metal Pouring
Extraction
No shakeoutSand dry and looseSand easily recycled
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VULCAN ENGINEERING´SEXPERIENCE & EXPERTISE
WAS INSTRUMENTAL TO SUCCESS OF MOST
OPERATING LOST FOAM FOUNDRIES TODAY.