Maintain Metal Quality and Quench Oil Efficiency with a Dedicated Quench Oil Coalescing Filter

Maintain Metal Quality and Quench Oil Efficiency with a Dedicated Quench Oil Coalescing Filter

In metal heat treating processes, quench oil is used to rapidly cool parts, setting their metallurgical properties. Over time, this oil degrades, accumulating soot, carbonized polymers, and metal fines. Without filtration, these contaminants create sludge, reducing cooling efficiency and part quality. A Quench Oil Coalescing Filter is the specialized tool for this demanding job.

The Problem: Contaminated Quench Oil

• Unconsistent Cooling: Soot on parts creates insulating "spots," leading to soft spots, warpage, and variable hardness.

• Increased Oil Consumption: Sludge requires more frequent oil dumping and replacement.

• Equipment Wear: Abrasive particles damage pumps and nozzles.

• Fire Risk: Excessive soot can increase the oil's fire hazard.

Why Coalescing Filtration?
While particle filters remove solids, the coalescing filter performs a dual function:

1. Fine Particle Removal: Captures sub-micron carbon and soot particles.

2. Water Removal: Often, water ingress (from coil leaks or humidity) is also a problem. The coalescer effectively separates this water, preventing steam explosions and further oil degradation.

Lefilter's Quench Oil Filtration Systems
We design systems that handle hot, viscous oil with high contaminant loads:

• High-Temperature Media: Coalescer elements designed to withstand quench oil temperatures (often 60-120°C).

• Pre-Filtration Stage: Includes a coarse screen or bag filter to remove large debris, protecting the coalescer.

• Automated Drainage: Water and separated sludge are automatically discharged.

• Closed-Loop Design: Cleans and returns oil to the quench tank continuously, extending oil life by 300% or more.

Results You Can Measure:

• Consistent part hardness and metallurgy.

• Reduced oil purchases and disposal costs.

• Lower furnace maintenance and downtime.

• Improved workplace safety.