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Lost Foam Casting Steps - English
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Lost Foam Casting Steps - English

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Lost Foam Casting Steps Presentation by Karel Cermak - Cermak Engineering (English Version)

Lost Foam Casting Steps Presentation by Karel Cermak - Cermak Engineering (English Version)

Published in: Technology, Business

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Transcript

  • 1. LOST FOAMPROCESS CHAIN
  • 2. Raw material with blowing agentPreexpansion Steam heat appliedMoulding EPS expanded factor ca. 30 Density control criticalStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 3. EPS beads filled into Al toolPreexpansion Steam heated to expand and fuseMoulding Cooled to avoid distorsion Automatic removalStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 4. Controlled shrinkagePreexpansion Accelerated processingMoulding Repeatability 0,2Stabilisation 0,1 0Glueing -0,1 0 100 200 300 400Coating -0,2 With Stabilisation Oven -0,3 Without Stabilisation OvenDrying -0,4 -0,5Cluster Insertion time (mins)Sand FillCompactionMetal PouringExtraction
  • 5. Preexpansion Hot melt glueMoulding Short “open time” RepeatabilityStabilisation AccuracyGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 6. PreexpansionMoulding Coating developed for lost foam RepeatabilityStabilisation Ceramic slurryGlueing Precise viscosity/solidsCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 7. PreexpansionMoulding Removal of all moisture Temperature/humidity controlledStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 8. PreexpansionMouldingStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 9. Preexpansion Dry unbonded sandMoulding Rain-fillStabilisation Uniform Rate controllableGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 10. PreexpansionMouldingStabilisationGlueingCoating Fluidisation - CompactionDrying Precise controlCluster InsertionSand Fill Vibration Analysis 5,0 5 FFT Analysis 4Compaction 2,5 3 0,0 2Metal Pouring -2,5 1 0 -5,0 -1Extraction 0 25 50 75 100 0 25 50 75 100 ms Hz
  • 11. EPS liquified and volatisedPreexpansion Metal replaces foamMoulding All details reproducedStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 12. No shakeoutPreexpansion Sand dry and looseMoulding Sand easily recycledStabilisationGlueingCoatingDryingCluster InsertionSand FillCompactionMetal PouringExtraction
  • 13. VULCAN ENGINEERING´SEXPERIENCE & EXPERTISE WAS INSTRUMENTAL TO SUCCESS OF MOST OPERATING LOST FOAM FOUNDRIES TODAY.