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Preheating

Preheating. Preheating. Preheating. Preheating Zone. medium wave. convection. short wave. Differrent ways of energy transfer are required. short wave. convection. medium wave. How do I choose the right pre-heating configuration ?.

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Preheating

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  1. Preheating

  2. Preheating Preheating

  3. Preheating Zone medium wave convection shortwave • Differrentwaysofenergytransferarerequired

  4. shortwave convection medium wave How do I choosetherightpre-heatingconfiguration?

  5. Influence of different preheat designs on the assemblies LED High Mass TH LED High Mass TH Bottom side IR Bottom Side Convection LED needs Short/Med IR LED may overheats with convection only in tunnel High Mass TH requires energy from convection Short/Med IR insufficient for High Mass TH

  6. ERSA MultijetConvectionfrom Top & Bottom New Top Side Convection LED High Mass TH High Mass TH requires energy from convection LED safely heated w/ top convection Bottom Side IR or Convection

  7. Short Wave Bottom side IR • High mix of PCB types • Fast reacting • Energysaving

  8. IR-Strahlerunten Medium Wave • Gentle and homogeneous heat transfer • High efficiency • Stressless and smooth PCB heat up • Robust and easy to maintain

  9. Bottom Side Convection • Rapid evaporationforwaterbasedflux • Gentle and homogeneous heat transfer • High efficiency • Stressless and smooth PCB heat up • Robust and easy to maintain • Avoids overheating for sensitive components

  10. Top Side Convection • High mass TH component • High mass multilayer PCB • No shadow effects through pallets and components • Avoids overheating for sensitive components

  11. A N2 N2 Air/N2 Löt- modul B,C A,B,C A Air/N2 A,B,C Modular, Flexible and Individually Expandable Preheating Concept • Variably configurable in both length and performance Preheating: A = Convection B = Medium wave IR C = Short waveIR A Air/N2 A,B,C Preheating Modules: 4 Bottom, 3 Top side Preheating Modules: 3 Bottom, 2 Top side

  12. Preheat Summary Preheating: A = Convection B = Medium wave IR C = Short waveIR A A A N2 N2 Air/N2 Air/N2 Air/N2 Löt- modul B,C A,B,C A,B,C A,B,C Do not compromise! Leading edge machines must provide for all combinations!

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