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Rail straightening principle
Straightening of Steel Rails
Introduction
Steel rails are the most important component of the railway track. The rail profile of a track should be correctly set in order to maintain a safe and efficient railway system. The railway tracks require regular check-ups and maintenance, including the in......
24/06/2023 
1070 
Shawna
No twist control hot and cold rolled wire rod (ZBH4400-1988)
， due to the development and improvement of technology, hot rolling mill has become a very important part in industrial production of steel. In recent years, the use of hot rolling mill has been increasing, as more and more applications come up. For example, hot rolled plates and sheets are widely ......
Three techniques for rail straightening
Introduction
Steel rail straightening is an important process in railway construction. It is a method used to cut and shape steel rails to the correct profile and correct bent sections. Various straightening techniques are available from manual to automated, depending on the size, shape and compl......
Metallographic diagram of 40Cr (1100℃×20min+500℃×4s water cooling)
The microstructure of AISI 40Cr steel after being heat treated at 1100°C for 20 min followed by oil quenching is relatively complex. The structure consists of upper and lower layers of martensite, a bainite/pearlite band in between them, carbide precipitation on the ferrite/austenite grain bounda......
Brief introduction of metallographic structure of carbon-free bainite
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Carbonless BESizing Microscopy
Carbonless BESizing microscopy is a type of electron microscopy that is used to image the internal structure of materials. It is unique because it eliminates the need for carbon foils, which are traditionally used in conventional transmission electron microscopy, ......
Application of Interference Microscope in Metallographic Analysis
Interference Microscopy for Metallographic Analysis
Metallographic analysis is an important procedure for quality assurance and failure analysis of metal components. It is used to assess the integrity of a metallic specimen, measure metal phase composition, quantify various mechanical or corrosio......
Properties and metallographic features of inclusions in steel
The presence of non-metallic inclusions in steels greatly affects the comprehensive mechanical and physical properties of materials. Even if the content of inclusions is very low, it can reduce the fatigue strength of steel and cause a series of performance problems. The main components of non-met......
Profile Flattening Bending Test
Stress bending test is characteristic for its geometrical properties and requires special laboratory equipment and methods for its realization. Results obtained from this type of testing allow us to determine the stiffness of materials when subjected to bending forces.
The purpose of stress bendi......
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