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

LEFCO Février 2014 3

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.

LEFCO Février 2014 4

Pollution of the baths

To treat the pollution, it is necessary to : Remove the solid particles Remove the liquids products Correct the oxidation

LEFCO Février 2014 5

Maintenance ofthe oil baths

To eliminate the solid particles :Traditional filtration.To eliminate the liquid products and correct the oxidation : Injection of chemical products.

LEFCO Février 2014 6

Maintenance ofthe oil baths

The LEFCO solution Filtration and injection of correction

product thanks to a special catridge

Filtration & Treatment Cartridge.Type 4416

LEFCO Février 2014 7

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

LEFCO Février 2014 8

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..)

LEFCO Février 2014 9

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.