Common Low-Fold Defects In Rails

Rails are usually divided into light steel rail and heavy steel rail. Low magnification defects of rails usually refer to metallurgical defects exposed in the whole section of rail specimens after acid corrosion through naked eyes (or low magnifying glass).
1. Hydrogen cracking. Hydrogen cracking refers to the appearance of a rail that appears in its section (usually on the head) after acid corrosion. This kind of spot is mostly white in its longitudinal section, so it is also called "white point". The white point is due to poor degassing during smelting or casting, and as the temperature decreases, the solubility of hydrogen in the steel becomes smaller and then precipitates into tiny pores.
2. Shrinkage holes. Shrinkage is a visible crack in the center of the waist or scattered in the waist after acid corrosion. It is caused by the insufficient length of the cutting head after the rail rolling, and it remains on the rail. When the smelting is not normal, the steel ingot or billet is condensed, and the shrinkage hole is too large to invade the body.
3. Subcutaneous air bubbles. Subcutaneous air bubbles refer to needle-like voids similar to ant nests in the area near the surface of the section after acid corrosion. This defect occurs mostly at a certain distance from the surface of the rail head and bottom.
4. Segregation. Segregation refers to the dark color segregation line appearing in the cross section of the rail after acid corrosion. The segregation line mainly has two forms, one is scattered segregation near the center line of the rail, and the other is mainly distributed in The center of the waist is called center segregation.
5. Texture. Texture refers to the dark stripes that appear on the quality control surface of the third section of the rail after acid corrosion. These streaks often appear in the head, leg or waist of the rail.
We are railway baseplate wholesaler. If you have any questions, please contact us. 
12Kg Light Steel Rail

评论

发表评论

此博客中的热门博文

Steelmaking Process (2)

图片
8. Refining period: The process of steelmaking is carried out by slagging and other methods to remove some elements and compounds that are harmful to the quality of steel by chemical reaction into the gas phase or discharged into the slag to remove it from the molten steel. period. 9. Reduction period: In the ordinary power electric arc furnace steelmaking operation, the time from the completion of the slag slag to the tapping is usually called the reduction period. 10. Furnace refining: The steelmaking process of refining the molten steel in the steelmaking furnace (converter, electric furnace, etc.) to another vessel for refining, also called secondary metallurgy. The steelmaking process is therefore divided into two steps: primary refining and refining. 11. Steel liquid agitation: Stirring of molten steel through refining beyond the furnace. It homogenizes the molten steel composition and temperature and boosts metallurgical reactions. Most metallurgical reaction procedures a
阅读全文

What Are the Different Types of Steel Rails?

图片
Steel rails are an essential component of railway tracks, providing the necessary support for the movement of trains. These rails are manufactured from a variety of steel alloys and are designed to meet specific requirements of the railway track, such as durability, strength, and resistance to wear and tear. In this article, we will discuss the different  types of steel rails  used in railway tracks.   Carbon steel rails Carbon steel rails are the most common type of steel rails used in railway tracks. They are made from a combination of iron and carbon, with the latter content typically ranging from 0.7% to 1.5%. Carbon steel rails are affordable and can be easily manufactured in large quantities. However, they have a low resistance to wear and tear, which means that they need to be replaced frequently.   High-carbon steel rails High-carbon steel rails have a higher carbon content than standard carbon steel rails, typically ranging from 0.8% to 1.1%. This makes them harder and more re
阅读全文

Crane rail installation - Standards and procedures

图片
   Introduction to crane track installation With the rapid development of modern logistics, greater demands are being placed on the logistics management of machinery and equipment. This is not just about transporting bits. Once heavy machinery or equipment has arrived at a facility, it also needs to be picked up, moved and set up appropriately. For these purposes, cranes come in very handy. As cranes play an important role, crane track installation also plays an important role in these industries.  Crane track installation Techniques and standards The accurate installation of crane rails is a primary requirement for this type of heavy machinery and related industries. Selecting the most suitable track and securing it is a key issue in ensuring the integrity and longevity of the crane track system. At Yongyang , we have a reliable, skilled and experienced team to help you find the more suitable crane rails. But more on that later. Now let's talk more about crane rail installation s
阅读全文