Elevator wire ropes are not uniform in domestic use of grease, and various steel rope manufacturers use a variety of greases according to the requirements of the elevator factory and their own experience. According to our understanding with elevator companies and steel rope factories, the following factors affect the selection of elevator steel rope grease: the service life of elevator steel rope is high; the traction wheel has the coefficient of friction for steel rope; the investment of each elevator factory is different. The country, the knowledge and habits of oil are not the same; and the elevator speed and elevator structure are different, there will be different requirements.
The current status of oil selection is as follows:
1. Anti-friction oil, which exhibits high adhesion and high viscosity, and has a large friction coefficient. Applicable to medium and high speed elevator steel ropes, which are used by elevator factories in Europe and the United States. At present, it mainly applies to NYROSTENN113Compound, but it also has disadvantages: if the friction coefficient is too large, it will cause the protection device to fail. The steel rope is sticky and sticky when it is divided and loaded, and the dealers object. IRIS-400C is a friction-increasing elevator rope grease. It has taken into account the user's opinion and has reduced the excessive friction from 0.32 to 0.25, which increases the lubrication performance, prolongs its life and overcomes the excessive friction coefficient. The negative impact.
2, high lubricity grease, suitable for low-speed elevators, Japanese elevator companies prefer the oil, a small amount of domestic use, the use of such oils in Japan (price 29,000 yuan / ton) for elevators with slightly higher speed, afraid of insufficient friction coefficient. IRIS-655 applies to such user requirements.
3, domestic elevator special grease, the characteristics are high viscosity, used in low-speed elevators and domestic elevators, but the domestic supply of grease, steel rope fatigue life rarely reaches 1 million times, the advantage is low price. IRIS-418 elevator special grease, the measured life of more than 1.2 million times, overcoming the problem of insufficient lubricity of other manufacturers, and good adhesion, the price is lower than their 15% to 20%.
4, elevator rope hemp core grease selection, the current domestic use of low-viscosity, low drop point grease, it will cause the core quickly dry up, pollution of surface grease problems, has not yet caused the attention of steel rope manufacturers, domestic joint ventures The steel wire factory uses grease with a dropping point of 75 ° C. This problem does not exist. IRIS-420 can be used in hemp core to achieve the same effect as foreign oils.
5, elevator maintenance oil, the current domestic useful butter, 20 # engine oil, ET elevator oil, Da Gaolu, product use is not good, there are steel rope slip, rust, broken wire and so on. IRIS-400D integrates lubrication, friction enhancement and rust prevention into one, and has been on the market for more than a year. It has quickly occupied the elevator maintenance oil market and customers have a good response.
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