特殊钢
特殊鋼
특수강
SPECIAL STEEL
2015年
3期
34-37
,共4页
唐郑磊%许少普%陆岳璋%李忠波%高照海%杨阳
唐鄭磊%許少普%陸嶽璋%李忠波%高照海%楊暘
당정뢰%허소보%륙악장%리충파%고조해%양양
S500Q-Z35钢%245 mm特厚板%亚温淬火%力学性能
S500Q-Z35鋼%245 mm特厚闆%亞溫淬火%力學性能
S500Q-Z35강%245 mm특후판%아온쉬화%역학성능
S500Q-Z35钢(％:0.13C,0.25Si,0.007P,0.001S,0.010A1,0.39Cr,0.92Ni,0.44Mn,0.02Nb,0.01Ti,0.54Ceq)245 mm板由KR脱硫铁水-120 t转炉-LF-VD-42 t模铸-牟制-热处理工艺生产.根据控制钢的晶粒长大原理,测定的CCT曲线和临界厚度,以及工艺试验,得出S500Q-Z35钢245 mm特厚板经快速升温至930℃,保温2.0min/mm,快冷至670℃的预淬火,快速升温至880℃,保温2.4 min/mm,循环水+气体搅拌冷至室温的亚温淬火,620 ～630℃,保温4 min/mm,空冷至400℃压平的回火处理,钢板表面组织为索氏体,其他部位为回火贝氏体+铁素体,具有良好的综合机械性能,钢板Z向性能良好.
S500Q-Z35鋼(％:0.13C,0.25Si,0.007P,0.001S,0.010A1,0.39Cr,0.92Ni,0.44Mn,0.02Nb,0.01Ti,0.54Ceq)245 mm闆由KR脫硫鐵水-120 t轉爐-LF-VD-42 t模鑄-牟製-熱處理工藝生產.根據控製鋼的晶粒長大原理,測定的CCT麯線和臨界厚度,以及工藝試驗,得齣S500Q-Z35鋼245 mm特厚闆經快速升溫至930℃,保溫2.0min/mm,快冷至670℃的預淬火,快速升溫至880℃,保溫2.4 min/mm,循環水+氣體攪拌冷至室溫的亞溫淬火,620 ～630℃,保溫4 min/mm,空冷至400℃壓平的迴火處理,鋼闆錶麵組織為索氏體,其他部位為迴火貝氏體+鐵素體,具有良好的綜閤機械性能,鋼闆Z嚮性能良好.
S500Q-Z35강(％:0.13C,0.25Si,0.007P,0.001S,0.010A1,0.39Cr,0.92Ni,0.44Mn,0.02Nb,0.01Ti,0.54Ceq)245 mm판유KR탈류철수-120 t전로-LF-VD-42 t모주-모제-열처리공예생산.근거공제강적정립장대원리,측정적CCT곡선화림계후도,이급공예시험,득출S500Q-Z35강245 mm특후판경쾌속승온지930℃,보온2.0min/mm,쾌랭지670℃적예쉬화,쾌속승온지880℃,보온2.4 min/mm,순배수+기체교반랭지실온적아온쉬화,620 ～630℃,보온4 min/mm,공랭지400℃압평적회화처리,강판표면조직위색씨체,기타부위위회화패씨체+철소체,구유량호적종합궤계성능,강판Z향성능량호.
