Suzhou lubricants common three pollutants and detection methods

Lubricating oil is known as the blood of the equipment, flowing inside the equipment, lubrication, anti-wear, cooling, cleaning and rust prevention. Lubricants if contaminated, will result in lubrication failure, equipment wear and tear increased, which led to equipment failure and shorten the service life of equipment, the following article for everyone to introduce three common lubricants and detection solutions, we work together to understand What about

A: Particles

Particulate is a hazardous pollutant, they enter the lubrication system, will cause abrasive wear, metal crush scratches, metal fatigue. Particulate pollution not only endangers the equipment itself, but it also shortens the useful life of the lubricant. Abrasive wear increases the amount of metal powder in the oil. These fine metal particles not only wear the equipment further, but also accelerate the oxidative deterioration of the oil because the metal powder catalyzes the oxidation rate of the oil. Given the chain of hazards of these particulates, early monitoring and early treatment are important.

Oil detection can detect small particles in the oil and can also detect early wear and tear on equipment. By detecting the particle count in the oil, we can understand the cleanliness of the oil and whether it has entered into particulate contaminants. In addition, through the metal analysis, we can find the equipment of the early wear and tear. When particles and equipment of the metal abrasive wear occurs, the scraped metal can be monitored. Sources of wear can also be found by metal composition analysis. For example, most of the gear material is iron, with minor amounts of other alloying constituents (mixed with other lubricants such as chromium, nickel, manganese, etc.).

If particles are found in the lubricant, the usual remedies include finding where the particles come from, then plugging the source and removing the particles by filtration - but this does not always work. In some cases it is difficult to completely remove the oil filter particles, have to replace the oil. If the wear is more obvious, it is recommended to conduct iron analysis, you can determine the extent of wear and tear, and guide the equipment maintenance.

Two: water

Into the lubricating oil into the water, if not separated from the oil, tiny droplets suspended in the oil to become a suspension, it becomes emulsified water, emulsified water hazards. When the lubricant is emulsified, the water content has exceeded the saturation point. Oils containing emulsified water, the lubricating oil will reduce the transparency, turbidity, white color or even turn into milk white. Emulsified water is very harmful because they flow freely and pollute the oil in the entire lubrication system. In addition, moisture can destroy the lubricity of the oil. When the emulsified water reaches the pressure-bearing area where the equipment operates, these areas will be poorly lubricated and the friction will aggravate and wear.

When the water and oil completely separated, it becomes free water. The harm of free water is relatively small, but it can also cause problems. First of all, free water may also circulate with the lubricant, causing the oil to emulsify. In addition, the oil in the oil will weaken the demulsification of the lubricant, leading to an increase in foam, consuming additives in the lubricant, shortening the service life of the lubricant, and easily breeding bacteria.

Moisture on the device in addition to causing poor lubrication, as well as hydrogen embrittlement, corrosion. Lubricant can prevent metal corrosion, if the oil into the water, easily lead to metal corrosion. Moisture will destroy the strength of the oil film and the integrity of the oil film. Lubrication relies on oil to form an oil film between the metal contact surfaces. The oil film separates the direct friction between the metal to prevent the metal from contacting directly. If moisture enters the metal bearing contact area of the bearing, it will damage the integrity of the oil film and reduce the film strength, leading to poor lubrication or direct friction between the metal, causing metal fatigue damage and metal scraping and chipping. Water will shorten the life of lubricants, the other will also cause water loss of antioxidants in lubricants, consumption, resulting in oxidative deterioration of lubricants. Oxidation of lubricating oil will form acidic substances, sludge and paint film, so that the viscosity of oil increases, affecting the splash lubrication effect and so on. When the discovery of oil into the water, the correct approach is to first find the source of moisture, cut off the source, and then take measures to remove water, serious oil change, determined by the oil test.

Three: mixed with other lubricants

When using lubricating oil, avoid contact with other oils. But in some cases, such as leaks, misprescribed lubricants (wrong choice of lubricant viscosity or wrong type of additives), etc., can result in different lubricant blends.

For example, mineral oils are not compatible with conventional PAG synthetic oils (non-oil-soluble PAGs). If these two oils are mixed, it causes the viscosity of the mixed oil to increase and form sludge. In addition, the acid number increases and the filter plug is blocked by the sludge. At the same time, wear and tear of equipment can occur due to poor lubrication caused by mixing. When the oil mixed with other oils, the solution is to change the oil and wash the lubrication system can not be removed using the filter.