The reason why the flash point of lubricating oil decreases
The flash point of lubricating oil is the lowest temperature at which the oil and gas from the surface of the oil flash under the specified test conditions. When the volatile oil and gas on the surface of the oil mixture with oxygen in the air, if the flash point is low, it is easier to flash, so the main problem of the lubricating oil flash point decline is that it may cause combustion and even fire problems, if the flash will damage the seal, causing leakage. The higher the flash point of the lubricating oil, the better, but the high flash point does not mean that the lubricating oil has excellent high temperature performance.
The cracking of base oil is one of the reasons for the reduction of the flash point of lubricating oil. When the oil or equipment is close to a high temperature heat source, such as high temperature steam, high temperature furnace, etc., the oil temperature of lubricating oil is higher than 550℃, and the cracking may occur, resulting in the reduction of the flash point of lubricating oil.
SH106B automatic open flash point tester (developed and produced by Shandong Shengtai Instrument Co., LTD.) is designed and manufactured according to the requirements stipulated in the People's Republic of China standard GB/T 3536 "Petroleum product flash point and ignition point determination method (Cleveland open cup method)".
According to the standard method of the instrument temperature rise, automatic lifting, automatic ventilation, automatic ignition, automatic display, automatic lock flash point value, automatic printing results. After the test is completed, it can automatically cool down and realize the full automation of the working process. It has the advantages of accurate measurement, good repeatability, stable performance and simple operation. It also supports the determination of flash point of GB/T1671-2008 plasticizer