Steel Rail Accessories Function is to guide

Basics of rail.

The first is the use of rail, rail is doing what? Where is it? How long is it? Then look down.

The rail is the main component of the railway track. Its function is to guide the wheels of the locomotive forward, bear the enormous pressure of the wheel, and passed to the sleeper. The rails must provide a continuous, smooth and resistant rolling surface for the wheels. In the electrified railway or automatic block section, the rail can also be used as a track circuit. The rails are made of carbonized steel from flat furnace and oxygen converter smelting. Its use is to withstand the operating pressure of the locomotive and the impact load.

We introduce the use of rail and let you introduce the length of the rail.

China's rail standard length of 12.5m and 25.0m two. Heavy duty, heavy rail with 25.0m standard length rail, other types of track can be used 12.5m25.0m standard length rail.

"250km / h passenger line 60kg / m rail temporary technical conditions" provides, 250km / h passenger line (both cargo) rail standard rail length of 100m.

Curve shortening the length of the track than the 12.5m standard rail short 40,80,120 mm of the three, 25.0m standard rail shorter than 40,80,160 mm three.

There are some customers are said to rail, the specific model is not clear. It is some people light rail, heavy rail, lifting rail do not know what kind of. In turn, Xiao Bian is wrong. You want to rail do not know light rail, heavy rail, lifting rail also asked us to quote, do not offer or our fault. For this kind of customer I can only say that right, thank you long look good to consult our home rail prices.

Well, then the first to introduce you to the next type of rail.

The type of rail is expressed in grams per kilometer of steel mass. There are several kinds of rails on the railway of our country, such as 75kg / m, 60kg / m, 50kg / m, 43kg / m and 38kg / m.

The cross-sectional shape of the rail is made of the I-shaped cross section with the best bending resistance, the track head, the waist and the bottom of the rail. In order to make the rails better from all aspects of the force to ensure the necessary strength conditions, the rail should have sufficient height, the head and bottom should have sufficient area and height, the waist and the bottom should not be too thin.

Of the above types of rails, the 38kg / m rail is now discontinued and the 60kg / m and 50kg / m rails are laid on the main trunk line. The station and special line are generally laid in 43kg / m rail. For heavy-duty railways and particularly busy sections of the railway, the laying of 75kg / m rail. In addition, in order to meet the needs of the structure such as turnout, mega-bridge and seamless circuit, the railway of our country also uses the special section (asymmetrical I-shaped) with the central axis. Now use more for the low special section rail, referred to as AT rail.