杨咏阶. Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging[J]. Special Steel, 2015, 36(6): 13-15.
杨咏阶. Process Practice to Control of Precipitation of TiN in ER70S-G Welding Wire Steel Containing Titanium and Prevent Nozzle Clogging[J]. Special Steel, 2015, 36(6): 13-15.DOI:
The production flowsheet of ER70S-G welding wire steel containing titanium (/% : 0. 07 C
0. 82Si
1. 49Mn
0. 012P
0. 010S
0. 19Ti
0.0062N) is 80 t top and bottom combined blown converter-LF-150 mm x 150 mm billet casting- coil rolling process. The results of thermodynamic calculation and production practice show that with control of liquid casting temperature ≥1560 °C
[N
]
≤78. 6 x 10
-6
[Ti/%
]
[N/%
]
≤0.00149 and casting speed 2.0 -2.5 m/min
it is available to avoid the precipitation of TiN during casting process and the nozzle clogging.