What kind of lubricant is good for steel wire rope lubrication and maintenance? Current status of wire rope lubrication and maintenance Wire ropes are generally working in the open air, and the environment is relatively harsh, and rust and corrosion often occur. People generally regard steel wire rope as an industrial material, but in fact it is composed of several moving elements (steel wire, strand rope, lining core, etc.). When the steel wire rope is stretched, bent and twisted, each steel wire and the lining core have friction and wear between each and each other. The traditional method of lubricating steel wire ropes is generally manual. Use a brush or other water absorbing tool to apply grease (oil) to the steel wire rope. It is difficult for the grease (oil) to enter the steel wire rope, and the effect is not good.
1. Current status of wire rope lubrication and maintenance Wire ropes are generally working in the open air, and the environment is relatively harsh, and rust and corrosion often occur. People generally regard steel wire rope as an industrial material, but in fact it is composed of several moving elements (steel wire, strand rope, lining core, etc.). When the steel wire rope is stretched, bent and twisted, each steel wire and the lining core have friction and wear between each and each other. The traditional method of lubricating steel wire ropes is generally manual. Use a brush or other water absorbing tool to apply grease (oil) to the steel wire rope. It is difficult for the grease (oil) to enter the steel wire rope, and the effect is not good. 2. Lubrication and maintenance (1) Filling method of lubricating oil. Infiltration method, when infiltration, the dirt, dust, sludge, etc. in the gaps of the strands of the wire rope are cleaned up with superheated steam or compressed air and a steel brush, and then placed in an oil bath for immersion. The oil used should be heated to 50°C Left and right to infiltrate. The infiltration interval is once every 3 months under normal temperature conditions. You can also use a portable oiler with an oil brush or a special oiler to refuel. The former is used for short steel wire ropes. The lubrication interval is about once every 5 days, and once every 3 days under dusty sand, high temperature or open air conditions.
(2) How to add grease. The ideal way to add lubricant is to add the lubricant to the place where the rope strands tend to open when the wire rope passes through the sheave or coiler. Lubricant can be added manually or mechanically.
Three, the selection of commonly used lubricants The primary function of wire rope lubricants is lubrication. To maintain the lubricity of steel wire for as long as possible in use, the grease must have a certain high and low temperature performance. The measurement of high-temperature performance is the dropping point, and the measurement of low-temperature performance is the low-temperature brittleness point, to ensure that the high temperature does not drip, and the low temperature is not brittle. The second is that the lubricant has good adhesion under the working environment, especially in the specific temperature and high-speed twitching to maintain its adhesion, and will not be thrown off. The second property of wire rope lubricants is rust resistance. The current standard GB/T2361-1980 warm test method for anti-rust grease and petrochemical industry standard SH/T 0081-1991 "Salt spray test method for anti-rust grease" are recognized as more appropriate testing methods in the industry, which can meet the requirements of steel wire rope for lubricating grease Performance requirements. In practical applications, the grease often loses or falls off in a short period of time due to the poor adhesion of the grease, failing to prevent rust. Port machinery users and petroleum enterprise users require steel rope grease to have good adhesion to prevent the rope grease from falling off and polluting the environment. The friction-increasing performance of wire rope lubricants. The mining friction wheel hoist must rely on the friction of the wheel, the liner and the rope to transmit power to achieve the purpose of lifting. The coal mine safety regulations put forward mandatory requirements for this. When visiting large coal mines, managers also pointed out that the use of inferior grease will lead to wire rope slippage, and the removal of grease will result in a decrease in lifting performance. It is eagerly hoped that the wire rope grease will have a better friction-increasing effect. In addition, elevator ropes also have requirements for increasing friction. Environmental protection performance of wire rope lubricants. Wire ropes used in elevators, ropeways, etc., are used by manufacturers to put forward environmental protection requirements. For port machinery ropes and petroleum wire ropes, customers all hope that the wire ropes will not pollute the working environment. The steel wire ropes for elevators and ropeways require the chemical composition of the grease to be free of mineral resins to prevent environmental pollution and facilitate cleaning. In the process of using the steel wire rope, the steel wire rope cannot be heated and oiled like the steel wire rope manufacturer, but the surface can only be oiled and immersed. Therefore, the grease must have easy construction and good permeability at room temperature.
