Post on 27-Dec-2015
LEFCO SA
Quench Oils Chemical Treatment
Christian BADER
Mehmet SARAN
LEFCO Février 2014 2
SummaryDeterioration of the quench oilsPollution of the oil bathsMaintenance of the oil bathsResultsProfitability
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Deterioration of thequench oils
Oxidation of the oils :
By the solid particles brought by the quenched parts.
By the solid and liquid particles created by the deterioration of the oils due to the thermal shocks.
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Pollution of the baths
To treat the pollution, it is necessary to : Remove the solid particles Remove the liquids products Correct the oxidation
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Maintenance ofthe oil baths
To eliminate the solid particles :Traditional filtration.To eliminate the liquid products and correct the oxidation : Injection of chemical products.
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Maintenance ofthe oil baths
The LEFCO solution Filtration and injection of correction
product thanks to a special catridge
Filtration & Treatment Cartridge.Type 4416
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4416 Cartridge Ext. Diam 165mm Int. Diam 62mm Height 440mm Rating 5µ @ 90% Life (@ 0.5 m3/h flow
rate) 3000 m3 (8 months)
Maintenance ofthe oil baths
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Results
1. Oil life time more than 8 years,(only additions) – Oil characteristics controlled by infra-red analysis and drasticity diagram.
2. Suppression of rejects (no more shrinkage and cooling cracks, etc..)
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ProfitabilityExample for an oil bath of 4000 litters :
Price of one complete load around 5600 euro.
Price of one complete filtration system, with pump, around 12000 euro, which is around 2 complete oil load.
Filtration cost for 8 months : 560 euro (8 cartridges), which is a cost of nearly 400 litters of oil.