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heated to 870℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. The 34CrMo4 alloy steel will get MAX 250 HB. First quenching heated slowly to 880℃, Then after adequate soaking at this temperature quench in oi
A588GrA is an American standard weathering steel, which also has good weather resistance and excellent toughness, welding and other performance, and has a broad market prospect. In order to further optimize the variety structure and improve the market com
A ST52 steel products have precise dimensions and uniform thickness, and can obtain coils that fully meet the requirements of high-precision tolerances. Good performance, many varieties and wide uses. With the heat treatment process, it can produce A ST52
As we all know, due to the process characteristics of "three highs and one low", hot rolling technology will cause certain defects in rolled steel sheets. The main disadvantage is that the iron oxide scale produced during high temperature rolling (800 ℃
Based on the principle of controlled rolling and controlled cooling, this paper studies the effect of rolling process parameters on SPA-H, formulates a reasonable rolling process for weathering steel SPA-H, and successfully develops a new steel grade SPA-
According to the theory of controlled rolling and controlled cooling, by reasonably formulating process parameters such as temperature, speed and reduction, the controlled rolling and controlled cold rolling process of SPA-H weathering steel is formulated
In recent years, S355J2W weathering steel has been widely used in high-speed rail bogies. Stress relief annealing is usually required after bogie welding, but there are few literatures on its heat treatment process. The annealing temperature control range
Weathering steel plate, which is a natural weathering steel plate, has atmospheric corrosion resistance of steel with characteristic corrosion and oxidation, and is continuously obtained in many fields. Common basic properties and states of various weathe
S355J2G3 low-alloy steel is produced in accordance with European standards, which is slightly higher than the Q345 series steel plate in domestic GB/T1591-1994, and is widely used in the railway vehicle manufacturing industry. The chemical composition of
S355J2G3 steel is a European standard steel with the composition of C ≤0.20, Si≤0.55, Mn ≤1.60, P≤0.035, S≤0.035.
S355J2G3 is a low-alloy high-strength structural steel, and S355J2G3 is roughly equivalent to GB's Q345D. S355J2G3, J2G3 means that the del