党爱国, 崔娟, 李永超, 等. 连铸-开坯生产流程325 mm x 280 mm轴承钢铸坯温度变化的数值模拟[J]. 特殊钢, 2015,36(2):17-20.
党爱国, 崔娟, 李永超, et al. Numerical Simulation on Temperature Change of 325 mm x 280 mm Bloom of Bearing Steel during Casting-Breakdown Process Flowsheet[J]. Special Steel, 2015, 36(2): 17-20.
党爱国, 崔娟, 李永超, 等. 连铸-开坯生产流程325 mm x 280 mm轴承钢铸坯温度变化的数值模拟[J]. 特殊钢, 2015,36(2):17-20.DOI:
党爱国, 崔娟, 李永超, et al. Numerical Simulation on Temperature Change of 325 mm x 280 mm Bloom of Bearing Steel during Casting-Breakdown Process Flowsheet[J]. Special Steel, 2015, 36(2): 17-20.DOI:
The temperature change of 325 mm X 280 mm casting bloom of bearing steel GCr15 during process including casting
holding conveying
stacking cooling and heating in heating furnace has been studied by using numerical simulation method and temperature-measuring in situ. Results show that with bloom out of withdrawal and straightening device during conveying process by single roller way
the difference of cooling rate at different parts of casting bloom is larger i. e. the cooling rate at comer 10 ℃/min
surface 7.1 ℃/min and core of bloom 4.6 ℃/min
while the difference of cooling rate at different parts of casting bloom is smaller during conveying process with holding pot ( comer 4 °C /min
surface 2.9 ℃/min and core 1.67 ℃/min) and during stacking cooling period
therefore to shorten the remaining time at tail of caster is available to avoid tiny cracks caused by uneven cooling. As compared by cold charging
the heating time of bloom shall be decreased by 20 min by hot charging process.