Anti-rust grease used for bolts of track board of intercity high speed railway

The characteristics of railway routes in China are the large temperature difference between the north and the south; North long time high volatility; Long-term humidity and humidity in the south; High salinity in coastal and central salt lake areas; At the present stage, similar anti-rust fats in China have the following problems: poor anti-rust effect of low-end fats and short application cycle time. Generally, salt spray tests of oils and fats will produce serious corrosion within three to seven days, and the corrosion degree of steel sheets reaches level 5.

"Anti-rust Grease for Bolts of Track plate of intercity high speed Railway" Technical characteristics

At present, there are dozens of types of antirust grease in China. This kind of anti-rust grease key with stone wax or fatty acid soap thickener, with sulfonate and other rare metal desulfurizer, usually used for a variety of mechanical parts packaging, preservation, high and ultra-low temperature performance is weak. The code of anti-rust grease for engineering construction is currently the largest national standard of quality level in China, which stipulates that the corrosion of steel sheet within 30 days shall be 2 (B) level. And according to our grasp and part of the sample of the experiment, really is completely achieve the standard provisions of only some models.

The anticorrosion problem of nylon sheet tube bolt embedded in intercity railway is a new research subject which is clearly proposed with the basic construction of intercity high-speed railway. Its anticorrosion grease should not only have all kinds of properties stipulated by the anticorrosion of bolts of existing line, but also meet the special requirements of high-speed railway. For example, it is not possible to carry out anti-rust engineering construction every year like the existing cable, and the antirust grease has a longer safety protection time. Therefore, on the basis of the special type of anti-rust grease for railway bolts, the anti-rust working capacity is improved, the anti-rust cycle time is increased, and the "anti-rust grease for inter-city high-speed rail plate bolts" is issued. In the salt spray test, the corrosion degree of 14-day steel sheet was raised from grade 2 to grade 0(A) for 40-day steel sheet. Can achieve anti-rust grease and bolts, waterproof casing with the same service life, once the pavement weekdays without anti-rust maintenance. At the same time, all kinds of index values have reached the technical standard of "Special Type safety Protective grease for Railway Bolts" issued jointly by transportation Bureau and Planning Department of Railway Ministry.