Technical
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Technical Study on surface Quality and Non -uniformity of Eutectic Carbides of Cr12MoV Steel Forging
Abstract: By means of controlling chemical compositions, adjusting pouring process, appropriately decreasing forging temperature, controlling forging rates and forging reduction and adopting light -weight -light forging method, Cr12MoV forging surface quality has been improved and non-uniformity of eutectic carbide can be met the technical requirements ..... [View Details] [File Download] -
Argon Oxygen Decarburization (AOD) Process
Argon oxygen decarburization (AOD) is a process primarily used in production of stainless steel and other high grade alloys such as silicon steels, tool steels, nickel-base alloys and cobalt-base alloys with oxidizable elements such as chromium and aluminum. AOD was invented in 1954 by the Lindé division of The Union Carbide Corporation, which became Praxair in 1992. An AOD converter is shown in Fig 1. [View Details] [File Download] -
Rerserach on Microstructure and Properties of Cr12MoV after Heat Treatment
After spheroidizing annealing / quenching and tempering treatment as preheat treatment and the same vacuum heat treatment as final heat treatment, the microstructure, hardness, impact toughness, bending strength and wear resistance of Cr12MoV / X12MΦ steel were studied. The results indicate that the quenching and tempering treatment as preheat treatment, instead of spheroidizing annealing, has more benefits for the variation of carbide morphology, size and distribution [View Details] [File Download] -
The research of improving the smelting quality of D2 steel
[Abstract] The effect of forging ratio and ingot size on the eutectic carbide inhomogeneity of D2 forged bars and the effect of refining process and the surface state of electrode on the oxygen content have been studied. Results show that the forging ratio and ingot size have significant influence on eutectic carbide inhomogeneity of D2, namely the grade of eutectic carbide inhomogeneity of D2 forged bars made by Ø 1100mm ESR ingot decreases ... [View Details] [File Download] - Gear steel is a general term for steel that can be used for producing gears. The existence of oxides and sulfides in the steel, harmful elements such as nitrogen, hydrogen, oxygen etc will reduce the mechanical properties and performance of steel, thus produce bad affecting the service life of automobile carburized gears. [View Details] [File Download]
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Gear materials and Heat treatment
It’s essential to select proper material and heat treatments in accordance with the intended application of the gear. Here we lay out few common gear materials for your reference. [View Details] [File Download] -
How to Choose Mold Steel Rolling Plate and Forging Die Blocks Reasonably
The most famous imported grades e.g., 1.2738, 1.2311, 1.2312, SP300, SP350.. They are pre-hardened forging die blocks. While, what’s the difference between die blocks and rolled plates ? You will be clear at a glance through its production process. [View Details] [File Download] -
Extending Service Life Of H13 Hot Extrusion Dies For Aluminum Alloy By Transverse Forging Technology
It’s found that experimented transverse forging technology to forge H13 hot extrusion dies for aluminum alloy, and succeeded in extending its service life of 1-1.5 times by changing fiber direction and adopting new heat treatment process. [View Details] [File Download] -
The harmful effects of non metallic inclusions and its influence on Metal Properties
Due to the existence of non-metallic inclusion in steel, the metallic continuity will be damaged : mechanical character, physical properties, chemical properties and process performance will be decreased. For example, the non-metallic inclusion could lead to stress raisers,... [View Details] [File Download] - The venerable mold steel isn’t the only choice for successful injection mold materials...but it’s a stable, solid foundation for a good mold. Ask any mold maker most anywhere what’s the most commonly used mold steel and he or she will probably say, “P20” without hesitation... [View Details] [File Download]
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