How to choose a paper machine with lubricating oil?

How to choose a paper machine with lubricating oil? 2018 - 08 - 06 modern papermaking machinery is a high degree of integration of behemoth, includes four main parts: the molding department or network department, squeezing, drying cadres, rewinding. By water, heat, steam, pulp and other harsh conditions, according to the working condition of equipment and operating speed is different, each part has a special lubrication requirements. Molding department should use most of the bearing grease, which can effectively avoid moisture intrusion; Press section bearing is usually based on the size and speed of the bearing, choose and circulating oil to lubricating grease; Baked cadre's bearing long time exposed to high temperature environment, fast running bearing, its high steam temperature of lubricating oil and oil transportation mode poses a challenge; Rewinding of the bearings work in a relatively good environment, often choose the same as the baking cadre circulating lubrication system lubricating oil. Choose paper oil as papermaking machinery of key factors is to develop in the direction of large-scale, continuous, automatic, paper width and the speed of paper machine has been greatly improved, bearing the speed increase, more and more paper machine customers begin to choose lubricating oil in the system as a whole, rather than choose grease as bearing, gear lubrication of the medium in the system. Therefore, when choosing the papermaking machine oil must consider the following factors: ( 1) Hydrolytic stability: moisture is one of the biggest hazards in paper machine lubrication system, when a tiny crack on the surface of the bearing contact with water, the rate of bearing fatigue increases, cause pitting, early failure and abnormal downtime, caused huge losses. High quality paper machine cycle lubricating oil must have excellent hydrolysis stability, to choose the right product and the first-class the system maintenance can help reduce the water enter the bearing seat, prevent premature failure of the bearing fatigue,. （ 2) Filterability: change the filter more time-consuming, costs are high, and high frequency change is poor poor oil filterability and system maintenance of signal. Pall filterability test can provide a relatively reliable reference, the test is divided into two kinds of dry method and wet method. In the dry process experiment, oil heated to 63 ℃, oil at a rate of about 20 ml/min through the filter size 3 & mu; M mesh filter, when the differential pressure of 172. 375 kpa ( 25 psi) By number of oil ml, we usually think that more than 2000 ml of qualified. In the wet test, 1 are necessary for product. 0 t % of distilled water, aged 24 h under 70 ℃, then placed at room temperature for 24 h, then the pall filter experiment was carried out. （ 3) Viscosity stability: due to the paper machine in the bearing long-term operation under high temperature, thus ensuring stability of the oil in the transportation and operation of the viscosity is very important. The key is composed of oil to have good oxidation stability and thermal stability, at the same time, centralized lubrication system design should have heating/cooling unit, maintain a relatively constant temperature system, to ensure that the oil viscosity. （ 4) Sedimentary control: when the oil aging, they will through various mechanism of decomposition of byproduct formation, affect the performance of the product. These will increase the viscosity of oil, the by-product of jams mesh. When they are deposited on the moving parts such as bearings, can increase the contact pressure, damage to equipment, and even lead to stop. Oil formula, therefore, must have a good ability of sediment control. Continuity of paper machine is a big, strong mechanical equipment, under the condition of competition in the industry, for equipment operation reliability is higher, should try to reduce the abnormal downtime. As bearing, gear and other components in the equipment lubricating oil, grease, must be a good management.