ADI DAYS - Charlotte Van de Wege

Sliding hub for a variable belt drive

Austempering, A Technology for Substitution

ADI DAYS 2016 6th – 7th October Minerbe

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CR rotary combineOptional variable header drive: Continuously variable speed of the header and intake feeder




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Bigger harvesters requires more power




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INPUTDRIVER

OUTPUTDRIVEN

LOW SPEED HIGH SPEED

Variable belt drive principle




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Variable belt drive principle – positorque sense system




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Sliding hub was initialy made in ductile cast iron GJS-500-7Fatigue failures occured during test phase

Sliding surface induction hardened to 40-50 HRC(~371-475 HB)




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A new, reinforced design was introduced

Sharp notch removed




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ADI 1050 material improved fatigue resistance and wear resistanceNo cost increase because surface hardning is not required anymore

Sliding surface induction hardening not required anymore

Hardness[HB]

Tensile strenght [N/mm² ]

0,2% proofstress[N/mm²]

Elongation[%]

GJS-500-7 170-230 500 320 7

ADI 1050GJS-1050-6

t < 30320-380

1050700

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30 > t < 60 1000 4




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Future steps at CNH

ADI will be involved in:- Applications where higher strength is required

and a small build in space is available

- Possible cost reduction program on parts where an additional surface heat treatment is now required- Applications which are suffering from wear- Weigth reduction

All of the new designs are developed with close collaboration with the material engineers- Prototype parts are tested both in a lab and in a field environment- Quality check is done before approving a supplier

ADI DAYS - Charlotte Van de Wege

Engineering

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