2 min read

Oil Vacuum Dehydrators: Managing Water in Rolling Mill Lubricating Oil

By Aaron Hoeg on Thu, Apr. 29, 2021

Managing Water in Rolling Mill Lubricating Oil

In our last post, Improving Rolling Mill Oil with Vacuum Dehydration, we discussed how the demulsibility (ability of the oil to separate from water) of oil is an important characteristic that greatly influences the effectiveness of the lubricant and how a loss of demulsibility can result in poorly lubricated bearings, unplanned downtime and premature fluid replacement. 

Topics: hydraulic fluid contamination water Water Contamination rolling mill lubricating oil vacuum dehydrator VUD
2 min read

Improving Rolling Mill Lubricant Oil with Vacuum Dehydration

By Aaron Hoeg on Thu, Apr. 22, 2021

Benefits of Vacuum Dehydration for Rolling Mill Lubricant Oil

Steel mills typically use lubricants with high demulsibility for rolling mill back-up roller bearings and chocks since relatively high levels of water contaminate the oil from quenching and descaling processes. These rolling mill lubricant oils may be known as Morgoil as they are commonly used on Morgan rolling mill systems.

Topics: hydraulic fluid rolling mill lubricating oil vacuum dehydrator VUD
2 min read

The Dollars and Sense of Fluid Cleanliness

By Dustin Flynn on Thu, Apr. 08, 2021

The Dollars and Sense of Fluid Cleanliness

The old phrase will always stand true, "A penny saved is a penny earned." When it comes to businesses and their pennies, every penny counts. When problems during the production and manufacturing process are fixed, people will say "pennies well spent." So, if pennies are so important, then what about dollars? What about thousands, or hundreds of thousands of dollars? What about millions of dollars? In today's production and manufacturing economy, these kinds of numbers are game-changing.

Topics: vacuum dehydrator fluid contamination bearings
3 min read

Getting to Know Demulsibility

By Dustin Flynn on Thu, Mar. 25, 2021

Demulsibility

What is Demulsibility?

Demulsibility is the ability of oil to separate from water. Oil and water naturally separate because like molecules attract each other. Oil sticks with oil, water sticks with water. Oil is "hydrophobic", or "afraid of water," which is a benefit when it comes to fluids like turbine oil. 

Topics: varnish in hydraulic oil varnish in turbine oil contamination water in oil dirt Phosphate Ester diesel engine maintenance steel mills vacuum dehydration rolling mill lubricating oil filter housing sizing micro-dieseling thermal event ISO 4406 vacuum dehydrator fluid samples oil analysis metal analysis paper mill hydraulic pump samples COD duplex low-pressure gearbox contaminination hydraulic duplex high-pressure cellulose media filter elements filter comparison aluminum refinery lab
2 min read

How a Vacuum Dehydrator Prevented Bearing Failure and Unplanned Outages

By Jim Harlan on Tue, May. 16, 2017

Saves >$15,000,000 by removing water and particulate from common reservoir lube oil.

The Application

In boiler water feed pump applications, water often finds its way into the oil lubricating the pump’s bearings. This was the scenario at a paper manufacturing facility that turned to Hy-Pro for help.

The Problem

In this application, the boiler water feed pump bearing lube system was combined with the facility’s steam turbine lube oil system. The water and the particulate contamination it was bringing with it were decreasing the fluid’s ability to lubricate the bearings and causing premature wear on the bearings.

The facility was attempting to remove free water with water absorbing filters (changed weekly) but the rate of ingression was too high for the filters to be as effective as needed. And since absorbents only remove free water, the filter elements were unable to address the dissolved and emulsified water present in the oil. If the situation were to continue much longer, a premature replacement of the steam turbine and boiler feed pump bearings would be necessary outside of the scheduled maintenance periods. While possible, this solution would cost millions of dollars without addressing the root of the problem. 

 

Topics: vacuum dehydrator case study lube oil VUD
1 min read

Vacuum Dehydrator Called On to Save Fishing Season

By Jim Harlan on Fri, Apr. 15, 2016

One of our V1S vacuum dehydrators was recently put to the test in a marine application with hydraulic oil contaminated by more than 2500 ppm of water. Did it sink or swim? Find out below.

The Problem: Failed Hydraulics Seal and Lost Productivity

When a seal fails on a net hauler hydraulics system out at sea, the costs and lost profits stack up quickly. In this instance, salt water began entering the hydraulic fluid on a 245 ft (75 m) purse seine through a seal leak, rendering the net hauler out of commission.

Faced with frequent fluid exchanges at a cost of $9,300 plus disposal, or worse, substantially larger lost profits from downtime for replacement of the seal, the vessel owner was in desperate need for a solution to allow him to continue operating without fear of malfunctioning equipment.

Topics: hydraulic fluid contamination vacuum dehydrator case study VUD
3 min read

[Video] Water Contamination and Removal Methods

By Scott Howard on Mon, Jun. 02, 2014

 

Do you know what the 3 different types of water contamination are? What about the 4 methods to remove water from your fluid? Watch our short video for a thorough explanation of each.
Water Contamination
Topics: hydraulic fluid water vacuum dehydrator coalesce technology headspace dryer video contaminination filter elements
4 min read

What is a Vacuum Dehydrator?

By Scott Howard on Mon, Sep. 30, 2013

If the hydraulic, lubricating, compressor or gear oil you use is not made of a water base in formulation , then water is considered a contaminant and must be recognized and managed. 

There are three types of water in a typical system: free water , emulsified water and dissolved water. The water saturation point of most oil, that point above which water is in a free form, is 200-400ppm, depending on age and condition. 

Using 100ppm for an upper water limit for most systems using mineral base oils, this means all free and emulsified water and a significant portion of dissolved water must be removed.

A vacuum dehydrator is one of the very few methods to remove dissolved water from oil. Let's take a look at these three types of water in your system. It will give you a solid foundation for how the vacuum dehydrator works in the end.

Topics: water Water Contamination vacuum dehydrator contaminination VUD
4 min read

The Ins and Outs of Water Contamination

By Jim Harlan on Mon, Aug. 19, 2013

Moisture contamination is inherent in the world we live in. In fact, it's all around us; that's what makes it so difficult when it comes to keeping water out of your oil.

The level of water vapor in the air is known as humidity. For example, If there is 80% humidity, the air contains 80% of the total amount of water vapor it can hold at the given temperature. Thus, there's always an amount of water in the air.

Topics: water Water Contamination vacuum dehydrator coalesce technology headspace dryer contaminination VUD
1 min read

Improving Rolling Mill Lube Oil Performance and Useful Life - Part 3: Solution

By Aaron Hoeg on Mon, Mar. 18, 2013

VUD Vac-U-Dry Vacuum DehydratorAt the end of Part 2, we discussed the winning nature of vacuum dehydration. If you missed Part 1 in the series, you can find it here

Did you know that hydrogen is the friendliest molecule - meaning that it is most likely seeking partners to attach to? Similarly, the suspended particles in oil actively look for particles to join forces, so they pair with the water. 

This particulate contamination is the catalyst guilty of continuing the degradation of the oil and the increase of emulsified water. The more water there is, the more oxidation that occurrs. This also increases various acids that form as the molecules break down. These acids attack seals, hoses, pumps and metal.

Topics: contamination iso cleanliness codes steel mills rolling mill lubricating oil vacuum dehydrator

Featured

Sign up for updates