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The normal temperature and corrosion mechanical properties of ordinary steel and weathering steel were studied. The mechanical properties of Q235NH steel after corrosion were analyzed by atmospheric exposure test. The above studies have found that the imp
Reduce the corrosion rate of 09CuPCrNi-A weather-resistant steel plate; but Cu is easy to enrich on the surface of 09CuPCrNi-A weather-resistant steel plate, hot cracks will occur during rolling, and "copper embrittlement" occurs, and adding a small amo
With the prolongation of service time, the corrosion resistance of ASTM A588 Gr. A weathering steel plate becomes more and more significant. ASTM A588 Gr. A weathering steel plate not only has good corrosion resistance, but also has excellent mechanical,
In order to ensure that the overall weather resistance of Corten B steel is consistent and avoid the decline in local corrosion resistance, a complete set of surface protection technology for Corten B steel has been formulated, that is, it is strictly for
Because weathering elements such as Cr, Ni, and Cu are added to UNI Fe 510 D2K1 weathering steel, the carbon equivalent is high, and the weldability of UNI Fe 510 D2K1 weathering steel is worse than ordinary bridge steel, and welding cracks, pores, slag i
In recent years, China is actively promoting the construction of ASTM A588 Gr.A steel bridges. ASTM A588 Gr.A steel is used to manufacture bridges, which can be used without painting. While meeting the requirements of energy saving and environmental prote
Some coastal bridge supports need to be made of Q355GNH weathering steel plate, and the anti-corrosion requirements must meet the relevant railway standards such as TB/T 1527-2011 and GB/T 9779-2011. In this study, several surface treatment processes of Q
Ordinary carbon steel Q345B and S355JR and weathering steel Q255GNH were placed in a non-specially humid environment indoors to investigate their weathering performance. When Q345B and S355JR were placed for 1 week, rust began to appear on the surface; wh
By studying the uniformity of deformation between racks and the uniformity of laminar cooling, it is analyzed that the main reason for the poor shape of SPHC weathering steel plates is the uneven cooling of laminar flow.
The microstructure of the weld zone of S355J2W steel welded joints air-cooled is composed of coarse columnar ferrite, network ferrite, acicular ferrite and a small amount of pearlite, and the microstructure of the heat-affected zone is composed of fine an