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目前显示的是 二月, 2023的博文

What Criteria Should I Base When Buying Railroad Steel

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Railroad track  is an important part of railroad construction and transportation. The function of the rail is to guide the wheels of the rolling stock forward, to withstand the tremendous pressure of the wheels, and to transmit it to the rail sleepers. To ensure the safety and speed of trains, the purchase of railroad track needs to be carefully considered at all times. Especially when you are a new buyer, you may have some confusion, such as what kind of rail should I buy? Which manufacturer to choose? Let's discuss these items one by one. Different application areas Railway rails have quite a wide range of application areas, such as high speed railroads, general railroads, heavy duty rails, gantries, etc. The rails used in these areas are different from each other. The main material of high speed rail is U75V, UIC700, UIC900A/1100, U71Mn. The strength of high speed rail reaches 800-880Mpa, which is extremely tough and sturdy. Heavy-duty rails mainly use rails with increased hardn...

Why Are Steel Round Bars Popular in the Industry?

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There are many types of steel bars available for use and manufacture in the industry and in the market. High yield strength deformed bars, thermomechanically treated bars, TMX bars, corrosion resistant bars and super ductile bars.   Round bars   are the most popular, they are round and cylindrical bars used in train tracks and construction sites. They have a plain and rounded appearance and are available in different sizes, so you can use them to meet your specific requirements. They are used in the production of different components such as pump shafts, machine tools, surgical parts, pins, etc. Round bars are ideal for use as they can be cut and bent without accidentally breaking or suffering any physical damage. There are also different types of round bars available - Aluminum round bars  Aluminum round bars are used in heavy industrial applications, for various places such as construction applications, automobiles, and also in aviation. Cold rolled bars Cold rolled bar...

Heat Treat Testing for Train Rail Steel with Different Carbon Rate

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Not all   steel rails  are of exactly the same grade. This is especially true for older tracks. Now that better, more standardized manufacturing methods are available, any track that is only a few decades old could be 1084 or at least very similar.  Until then, though, it's probably anyone's guess. 200 years ago, they would have made tracks out of wood. It's been a steady upgrade from there. Steels with different carbon contents Steel is used to make tracks for railway lines. This steel must be wear-resistant and friction-resistant. These properties of steel depend on the proportion of carbon and manganese it contains. A maximum of 0.82% carbon and a maximum of 1.7% manganese are required to produce a hard, wear-resistant steel. Low carbon steel Contains less than about 0.25 weight percent carbon (low carbon steel) relatively soft Outstanding ductility and toughness High machinability and weldability Used for beams, channels, nuts, bolts, wire tin cans, etc. China standar...

What Grade of Steel Are Rails? Why Doesn't it Rust?

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Heavy railroad  tracks are very strong pieces of steel. Rail steel is usually 1084 or the equivalent hot rolled steel. This is a medium carbon steel containing 0.7% to 0.8% carbon and 0.7% to 1% manganese. This steel is well suited for heat treatment. It is tough, hardenable and forgeable. Let's review the properties of this metal, some effective ways to use it, and some good applications for this grade. Properties of Train Track Steel One of the distinguishing characteristics of this steel is its high manganese content. This is a requirement for good reason - it allows for a more intensive heat treatment. For rail to perform well over time, the steel needs to have two very important qualities: high wear resistance and fracture resistance. A deeper heat treatment gives the steel higher strength properties. Basically, surface cracks are less likely to occur over time. As you can imagine, trains are heavy and put tremendous pressure on whatever is underneath them. Depending on the si...

Ballastless Track Design and Advantages and Disadvantages

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Since the opening of the railroad, the requirements for track systems have changed considerably. This applies not only to parameters such as axle weight and speed, but also to less obvious factors such as train length and frequency.   Steel Rail supplier  shows you. In addition to the classic design of the track grid floating in ballast, other unconventional designs have been developed with varying degrees of success. The average service life of a railroad permanent way is between 30 and 60 years. Due to the large financial investments required, innovations in the rail infrastructure sector can only slowly gain acceptance. Ballast was originally chosen as the basis for railroad infrastructure because of its ready availability and good maintenance options. However, it is this component that currently limits the service life of the entire system. The replacement of the entire system was previously affected by the wear and tear of the rail sleepers and rails, but now it is the ba...