All productsHeat Treatment Industry
Quenching Oil Filtration Machine
RTES specialises in building bypass filtration machines to enable continuous bypass filtration for quenching oil which cleans the oil in a side-loop while the heat-treatment line remains in operation, keeping the cooling rate steady and extending oil life.




Key Benefits
- Consistent Part Hardness: Keeps cooling speed stable by constantly removing fine carbon soot, scale, and burnt residue that cause soft spots or uneven hardening.
- Zero Production Downtime: Operates offline through a dedicated bypass loop, meaning you do not need to shut down furnaces or stop manufacturing to clean the oil.
- Longer Oil Life: Dramatically extends the working lifespan of the quench oil, reducing the frequency of expensive total oil drains and refills.
- Fewer Defective Parts: Prevents surface staining and dimensional variation on metal components, lowering scrap and rejection rates.
- Lower Disposal Costs: Generates a much smaller waste footprint, leaving only concentrated sludge to dispose of instead of massive volumes of spent oil.
- Eliminate manual scavenging of the oil tank by >90%: Our machines can even go for fine filtration in non-operation days to remove even 10-micron size sludge from the bottom by virtue of the agitators of the quenching oil tank keeping the oil in a turbulent state.
RTES Quench oil filtration machines have a reusable 50 microns SS mesh filter which can be cleaned by using high pressure air available in all industries and reused. Advantage is this machine is also equipped with allowing to filter out contamination that is even 10 micron and smaller – usually the reason for the heavy sludge formation at the bottom and this can be done periodically.
Result
- Maintains the oil's cleanliness levels
- Clean quench oil improves quench quality
- Maintains quench oil properties at optimum levels
- Extends the life of quench oils, reducing oil purchases
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