This paper studies the structure and mechanical properties of welding joints and repaired layers by using bainitic electrode for bainitic frog steel without preheating.

Cracking reason of a transverse cracking bainite steel frog was analyzed by macro examination, microstructure analysis and hardness test.

Susceptibility to hydrogen embrittlement and dehydrogenation annealing process of bainite steel used for crossing;

The changed of micostrure of 20Mn2SiVB bainite steel at constart temperature;

Effects of rare earth on microstructure and mechanical properties of GDL-1 bainite steel;

Present status and innovation of bainitic steel welded frog;

Research and Production on Medium and Heavy Plate of HQ590DB Ultra-Low Carbon Bainitic Steel;

The toughening effect on Zn for bainitic steel;

Rigidity Trend Prediction for Bainitic Steels with Grey Gradient Optimization Model;

The impact property of four air cooled bainitic steels containing carbon 0.

The advantages of bainitic steels (BSs) in technology,important significance in national economics,applying condition in China at the present and developing prospective in the future have been presented in this pape