High Temperature Grease For hot grease lubricated equipment, several protocols are in place for choosing high temperature grease. The selection should take into consideration operating temperature, oil viscosity and type, speed, loading, lubrication intervals, etc.
Thickeners The materials used for the selection of thickeners may be organic or inorganic. How a grease is useful over a period of time is dependent upon the package and has no resemblance to the thickening system. However, because the performance of a grease is dependent on chemical combinations, it does not specify the exact temperature range. When it is the non-melting products, the lubricating oil tends to burn at high temperatures, leaving behind thickener residues. Though the dropping point of a thickener is high, thermal degradation of the composition occurs that tends to limit its usefulness to high temperatures. But it does not possess the pre-oxidant tendencies relating to the metal soap thickened grease. The last category is the complex soap or metal soap thickener system. High temperature grease has to be compatible Before selection of high temperature grease, issues of compatibility or incompatibility need to be addressed. Since grease is a representation of complex chemicals with a well-defined engineering balance, adding unplanned chemicals has an impact on its performance. It is going to degrade the performance levels. The user is confronted with a difficult choice between whether they need to dismantle the equipment, eradicate the original product, and clean the system. Base oils, thickeners, additives, all of them may have problems at varied operating temperatures with specific time limits in use. Even before converting a new system to a new form of grease, extensive testing needs to be done. This is going to prevent unnecessary costs and money due to long-term maintenance costs. Once the critical limits are reached, the grease is bound to soften. But hardening could also be a possibility. It is difficult to figure out what the level of decomposition will be, taking into consideration the time line and temperature. The moment variables are introduced, like introducing new chemicals, it poses a challenge to arrive at the exact outcome. This harps on the reasons why grease needs to be mixed. If a grease is sensitive to moisture, then irrespective of the ability of the grease to withstand heat, using the product has to be weighed against the process of process moisture along with degradation of the grease. Since bases, oils, or additives are bound to react at different rates, something better has to be stated when you use simpler products. One needs to consider whether an application is continuous fasting or at internment temperature. If it is the case of the latter, then a middle-tier product may turn out to be useful.
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