Advantages of Controlled Rolling for HP325
Controlled rolling is an important means to improve the strength and toughness of HP325 steel. It is widely used in industrial production because it has 7 advantages.
Welding method of SG255 steel
There are many welding methods for gas cylinders, commonly used are electrode arc welding, submerged arc welding, argon tungsten arc welding, and melt inert-gas welding. This article mainly writes about the latter two welding methods.
Points of Purity For SG255 steel
In the manufacturing process, controlling the inclusions and gas content in SG255 steel is the key to welding steel cylinders, and the purity of SG255 molten steel can be improved by taking the three steps.
Cooling process of SG255
Those two-stage cooling process can effectively inhibit the continued growth of ferrite, and can also promote the pearlite phase transformation process of austenite with high carbon concentration, so as to obtain high-quality SG255 steel.
Prospect and application of SM490YB steel plate
SM490YB belongs to a low-alloy high-strength steel, which has the characteristics of good weldability, good plasticity, strong cold and hot deformation ability. Due to its high strength and tensile strength between 490~610MPa, SM490YB steel can be used in
Production process of SM490YB steel plate
The production process of SM490YB steel plate generally include 8 steps.
Cutting process of SM490YA steel
Steel plate cutting generally refers to the process of mixing industrial gas and oxygen to reach the cutting temperature, melting, blowing slag and dividing the steel structure. The technologies currently used include flame cutting, water cutting, plasma
Welding Points of Q355GNH steel
Some points for attention can effectively improve the welding quality and weld strength of Q355GNH weathering steel.
Features of Q355GNH weathering steel
Q355GNH weathering steel has good corrosion resistance, heat resistance and oxidation resistance, as well as good toughness and aesthetics.
Continuous Casting Technology of Q355GNH
The continuous casting process is fully protected, and steel plate mold slag for container steel is added to the crystallizer.Q355GNH steel is prone to breakout accidents during the casting process. The reason is that Q355GNH steel contains Cu, and the bi
Application of FH32 steel plate
The material of FH32 steel plate conforms to the international classification society regulations, and has good welding performance and cold forming performance. H32 steel plates are mainly used in the fields of ships and ocean engineering, including the
About cracks generated during quenching of 42CrMo4 steel
After the quenching and tempering treatment of 42CrMo4 steel, the inspectors found several small crack defects when visually inspecting the surface quality of 42CrMo4 steel. Within the range of 10 mm ~ 20 mm from the outer circular surface. The cracks are
The difference between 42CrMo and 42CrMo4
In production and manufacturing, we often encounter the material 42CrMo4 mentioned in the drawings of European countries, it looks similar to 42CrMo. Whether these two grades are common, what is the difference, and what are the characteristics of each, le
Thermal processing of 42CrMo4 Steel
Corresponding to the smelting and casting process, the 42CrMo4 steel ingot produced by EAL+LF+VD is mainly used for hot forging, including free forging and die forging.The 42CrMo4 steel billet produced by the converter + continuous casting process is usua
Casting Technology of 42CrMo4 Steel
There are two mainstream methods for 42CrMo4 smelting and casting, one is electric arc furnace smelting, secondary refining and vacuum degassing, and the other is converter steelmaking and continuous casting technology adopted by large steel mills.The dif