Self-lubricating
bearings have a wide temperature range, sufficient solid lubricant content, uniform release, good self-lubricating properties and occlusion, which can effectively protect the journal and achieve long-lasting use. It is suitable for operation in high temperature, low speed, heavy load, large dust, water shower and impact vibration. It can be widely used in the rolling of mining machinery, metallurgy, petroleum, chemical, food, textile, paper, printing and dyeing machinery and equipment. And sliding bearing parts.
The aluminum liquid produced by the aluminum electrolysis cell is sucked out by vacuum lifting and then poured into the mixing furnace. After the proportioning and slag removal, it flows into the aluminum ingot casting machine for casting, and the formed solid is called aluminum ingot, and the produced aluminum is produced. The ingots are stacked by a stacker. In order to improve production efficiency, the aluminum ingot must be cooled with a large amount of cooling water before molding, and the huge heat of the aluminum liquid is released into the cooling water during the cooling process to generate hot water vapor.
v Casting machine bearings are in high temperature and water vapor environment. Many bearings are greased. The added grease will be melted and overflowed due to high temperature in a short time. It is difficult to maintain and maintain, and the surface of the equipment is difficult to wipe. Further, the steel structure bearing is easy to corrode and rust in a hot and humid environment, the failure rate is very high, the equipment maintenance cost is high, and the equipment operation is often troubled by the following two problems.
It is difficult to realize high-temperature continuous operation of the oil supply operation. The ingot, ingot, ingot, and ingot are installed in the unit casing. Each rotating bearing is designed with a grease fitting that periodically injects grease. Remove the housing and use a grease gun to pressurize the grease. And the whole machine has more than 30 oil injection points. The long-term operation and maintenance can not achieve this cumbersome oil filling operation. It is only necessary to hold the thin oil pot and pour it on the outside of the running bearing sleeve. It is difficult for the lubricating oil to enter the friction pair of the bearing. Some of the bearings are in a frictional state.
High ambient temperature, grease lubrication is not suitable for the current casting machine rolling
bearing used in the molybdenum disulfide grease is considered to be resistant to high temperature grease, we know that its base oil is a petroleum product, add a small amount of high temperature resistant molybdenum disulfide additive, its temperature limit That is 120 ° C. According to the test, the working temperature of the casting machine bearing can reach 200 °C, which has far exceeded the temperature limit of grease.
Under such high temperature conditions, the base oil in the grease will become thinner and gradually evaporate, and the remaining carbon residue, molybdenum disulfide and dust will be mixed into a solid block to solidify on the cage of the rolling bearing, which not only loses its lubricating effect, It also hinders the normal operation of the rolling bearing and wears out quickly. It takes up to 2 weeks to stop, and removes the bearing to clean the grease.
