16MnDR試制總結(jié).doc

第23頁 總23頁 低溫容器鋼16MnDR試制總結(jié) 低溫容器鋼16MnDR試制總結(jié) 根據(jù)低溫容器鋼品種開發(fā)專業(yè)會的計劃安排，2008年3月14日煉鋼廠完成了16MnDR品種的冶煉及鑄坯共計4爐41片；5月9日中厚板廠對該品種進行了軋制。從整體的軋制工藝情況看，基本符合前期制定的軋鋼工藝要點要求，從取樣的性能上看效果非常好，其中鋼板的強度、塑性、低溫韌性、時效沖擊指標都比較理想，其中強度、低溫沖擊指標且有較大的富余量。下面就16MnDR品種整體試制情況總結(jié)如下，以便為今后該品種投入大生產(chǎn)提供工藝準備。一、工藝流程1、工藝流程鐵水轉(zhuǎn)爐LF爐(VD) 連鑄堆冷板坯檢驗加熱高壓水除鱗粗軋精軋ACC冷卻熱矯精整探傷正火鋼板取樣、檢驗入庫。2、原料及成品尺寸2.1、原料：H*B*L=25021002350 mm2.2、成品：3024006000上mm（雙倍）、40240010000上mm（單倍）、5024008000上mm（單倍）二、化學成分設計1、內(nèi)控成分：牌號標 準化 學 成 分，%CSiMnPSNbVAlt16MnDRGB3531-19960.200.200.501.201.600.0300.020-0.02內(nèi)控0.120.160.200.401.301.500.0150.0100.100.200.100.200.020.05目標0.140.301.400.0150.0100.0150.0150.0302、熔煉成分分析：爐 號鋼 種成 品 成 分 ( )CSiMnPSAltNbV280269516MnDR-10.164 0.397 1.445 0.014 0.005 0.0267 0.0193 0.0200 280269616MnDR-10.1680.4621.4540.0120.0050.03970.01880.0192280269816MnDR-20.1440.3541.4810.0110.0030.03550.01430.0123280270016MnDR-20.1310.2921.5190.0110.0050.03610.01420.0142備注：16MnDR-1過VD, 16MnDR-2不過VD。三、軋鋼工藝1、加熱 工藝要求加熱時間33.5小時，由于試驗料前有待溫料以及試驗料在軋制中進行工藝調(diào)整等因素的影響，板坯實際加熱時間在5：017：17，板坯出爐溫度為11721246，板坯在加熱爐各段加熱溫度符合工藝要求。2、軋制本次試驗為了對工藝及性能進行比較優(yōu)化，分別采用了AR、TMCP兩種軋制方式，其中采用AR軋制了3塊（30mm、40mm、50mm厚各1塊），其余全部采用TMCP。TMCP工藝參數(shù)鋼 種16MnDR16MnDR16MnDR成品厚度50mm40mm30mm待溫厚度145mm110mm90mm精軋開軋溫度880900890910920940終軋溫度860880860890900920ACC開冷830850840870870900ACC終冷680700680700680700冷卻速度5/s6/s8/sACC參考參數(shù)水管組數(shù)1315組；開16，8，10，12，14，1720水管組數(shù)911組14，6，8，10，1416水管組數(shù)79組14，7，9，1315上下水量100/100*2.7、輥道速度1.0m/s2.1、壓下制度（壓下規(guī)程）采用熱軋的30mm、40mm、50mm 3塊鋼板壓下規(guī)程采用計算機二級自動生成，中間坯厚度分別為150mm、145mm、145mm。采用TMCP軋制的30mm、40mm、50mm中間坯厚度分別為85mm、100mm、120（140）mm,在試驗中為了保證成品板型，增加了板型平整道次效果較好，下面為試驗的壓下規(guī)程。板號爐號鋼號軋制規(guī)格軋制方式粗精R1R2R3R4R5R6R7中間坯F1F2F3F4F5F6F7128280269616MnDR-130AR5-7230.9210.4178.7147.4151.8150117.791.270.855.243.534.929.51292802696-116MnDR-140AR5-5229.8208.6175.3142.3146.8145112.383.86348.139.11302802696-216MnDR-150AR5-7(手動操作，無記錄）1451312802696-316MnDR-150TMCP5-7229.8208.1172.7137.5141.8140102.674.754.748.813250TMCP5-7229.5207.8172.5137.3141.8140120.2102.387.374.363.354.449.1軋廢280269516MnDR-150TMCP5-7229.3207.6172.3137.2141.8140113.7150TMCP7-7229.4207.5184.3161.2138.1117.4121.8120100.686.975.464.855.748.3平整2280269816MnDR-250TMCP7-7229.4207.7184.4161.3138.1117.3121.8120104.590.979.469.360.753.548.8350TMCP7-7229.3207.5184.2161.1138117.2121.8120100.686.975.464.855.748.353.64280270016MnDR-250TMCP7-7229.2207.4184.1161137.9117.2121.8120100.787.175.56555.948.553.7550TMCP7-7229.5207.7184.4161.3138.2117.4121.8120100.962802696-416MnDR-140TMCP7-7229.5207.6181.7156130.3107.2111.811093.780.168.358.349.842.938.5740TMCP7-7229.1207.3178.8150.4122.296.7101.810083.97160.751.84437.943.682802695-116MnDR-140TMCP7-7229.2207.3178.8150.4122.396.8101.810083.971.361.152.144.438.443.8940TMCP7-7229.8207.9179.1150.9122.697.1101.810084.171.861.552.644.838.743.81040TMCP7-7229.5207.7179150.8122.697101.810083.971.3615244.238.143.61140TMCP7-7229.3207.4178.7150.5122.296.7101.810083.971.3615244.238.243.6122802698-116MnDR-240TMCP7-7229207.3178.5150.5122.196.8101.81008471.561.352.444.638.543.61340TMCP7-7229.9208.1179.3151122.697.3101.81007261.652.74538.943.61440TMCP7-7229.8208179.3151122.897.2101.810083.971.361.152.144.438.243.61540TMCP7-7229.2207.4178.8150.6122.4101.810083.971.3615244.338.243.6162802700-116MnDR-240TMCP7-7229.1207.3178.7150.6122.296.9101.810083.971.3615244.338.243.61740TMCP7-7229.7208179.5151.1122.697.2101.810084.271.861.552.644.838.743.61840TMCP7-7229.8207.8179.3150.9122.597.2101.81008471.461.152.144.438.343.61940TMCP7-7229.1207.1178.7150.4122.297.3101.810083.971.3615244.338.243.6202802696-516MnDR-130TMCP7-7228.9207174.8142.8110.881.886.88571.360.851.643.837.332.128.82130TMCP7-7229.6207.7175.4143.5111.18286.98567.757.947.939.733.128.433.62230TMCP7-72330TMCP7-7242802695-216MnDR-130TMCP7-7229.1207.1174.8142.9110.881.786.98571.158.147.739.53328.233.62530TMCP7-7229.8208175.2143.4111.382.186.98571.258.748.24033.428.533.62630TMCP7-7229.6207.7175.4143.11118286.98570.658.848.440.133.628.633.62730TMCP7-7229.2207.4175142.9110.881.586.88571.158.247.639.43328.133.6282802698-216MnDR-230TMCP7-7229.3207.4175.1142.9110.781.886.98571.158.247.839.633.228.333.62930TMCP7-7229.9208175.6143.5111.28286.98571.258.647.939.833.328.533.53030TMCP7-7229.7207.9175.6143.4111.282.186.88571.158.44839.833.428.533.73130TMCP7-7228.9207.1174.8142.7110.681.586.98571.258.44839.933.428.533.7322802700-216MnDR-230TMCP7-7228.9207.2174.9142.7110.781.786.88571.258.548.139.933.428.633.83330TMCP7-7229.9175.7143.3111.282.186.88571.258.54839.933.428.533.73430TMCP7-7229.6207.8175.4143.3111.181.986.88571.358.648.24033.628.633.73530TMCP7-7229.1207.3174.9142.9110.781.786.88571.358.748.24033.628.733.72.2、溫度制度爐號鋼號板號規(guī)格軋制方式粗-精R開R終中間坯待溫時間F開F終ACC開ACC終返紅冷卻速度集管開啟組數(shù)上下水量輥速280269616MnDR-112830AR5-711511087150010971082102997810251.94100/2801002802696-116MnDR-112940AR5-511491085145010981064103497510272.24100/2801002802696-216MnDR-113050AR5-7118399514501024989939965990-1.07100/2801002802696-316MnDR-113150TMCP5-7118611091408848328601.214100/2706016MnDR-113250TMCP5-7116411001405:269809709608238723.014100/27060280269516MnDR-1軋廢50TMCP5-71161107714010:588970.016MnDR-1150TMCP7-7116710911209:109058898707588152.514100/27060280269816MnDR-2250TMCP7-7116810791208:029018848646907713.914120/3246016MnDR-2350TMCP7-7117310501209:298998778677247583.214120/32460280270016MnDR-2450TMCP7-7116710571208:149038888870.016MnDR-2550TMCP7-7118510961200.02802696-416MnDR-1640TMCP7-7115210581108:259058817087267520.016MnDR-1740TMCP7-71108918748080.02802695-116MnDR-1840TMCP7-7116410491007:159088868617347592.810120/3246016MnDR-1940TMCP7-7118510891006:489309078807387793.210120/3246016MnDR-11040TMCP7-7119910981007:499098898776127405.910120/3246016MnDR-11140TMCP7-711651007:209188968686177125.610120/324602802698-116MnDR-21240TMCP7-7114510751006:369289108856747504.710120/3246016MnDR-21340TMCP7-7120610891005:349809598957107664.110120/3246016MnDR-21440TMCP7-7119010891008:359138948686307385.310120/3246016MnDR-21540TMCP7-7116710891008:019088878646447294.910120/324602802700-116MnDR-21640TMCP7-7115010641007:419108888607037543.510120/3246016MnDR-21740TMCP7-7120611231006:429539368817307703.410120/3246016MnDR-21840TMCP7-7119111121008:179039028736247075.510120/3246016MnDR-21940TMCP7-7117210971007；519168928586907523.710120/324602802696-516MnDR-12030TMCP7-711601092855:059589437606206803.19120/3246016MnDR-12130TMCP7-711901085856:339439208806907404.29120/3246016MnDR-12230TMCP7-711851118855:569319128706937323.99120/3246016MnDR-12330TMCP7-711731086855:309389288606587084.59120/324602802695-216MnDR-12430TMCP7-711741095855:259439238756697204.69120/3246016MnDR-12530TMCP7-711941097854:279869468767077263.89120/3246016MnDR-12630TMCP7-71193111485未待溫10089738606567234.59120/3246016MnDR-12730TMCP7-711711097856:049399108806677034.79120/324602802698-216MnDR-22830TMCP7-711691085859349108706607114.79120/3246016MnDR-22930TMCP7-712001110859629308486907143.59120/3246016MnDR-23030TMCP7-711761116859329118606047125.79120/3246016MnDR-23130TMCP7-711381107859389178546607194.39120/324602802700-216MnDR-23230TMCP7-711451097859529248106487123.69120/3246016MnDR-23330TMCP7-711891105859429078306807283.39120/3246016MnDR-23430TMCP7-711711108859459378086697153.19120/3246016MnDR-23530TMCP7-711701105859609318226807143.29120/324602.3、鋼板熱檢情況：本次軋制的30mm鋼板由于在層流冷卻中由于側(cè)噴未開（設備問題）以及上水量偏大造成鋼板上下冷卻不對稱，在冷卻到室溫后出現(xiàn)9塊鋼板瓢曲（板型向下扣），對于今后軋制該規(guī)格應開啟側(cè)噴且調(diào)整上下水量比列。16MnDR 30mm鋼板瓢曲情況序號爐號鋼號板號規(guī)格瓢曲表象最大撓度（mm）12802696-516MnDR-121-230上表面凸起3522802696-516MnDR-122-230上表面凸起9032802698-216MnDR-228-130上表面凸起12042802698-216MnDR-228-230上表面凸起7052802698-216MnDR-230-130上表面凸起3562802698-216MnDR-230-230上表面凸起7072802695-216MnDR-127-130上表面凸起不明顯82802695-216MnDR-127-230上表面凸起12092802695-216MnDR-124-230上表面凸起較嚴重因上述鋼板瓢曲嚴重，無法進入常化爐正火，目前待判。四、正火工藝正火處理溫度為910930。在爐內(nèi)時間t=(1.51.8)(min/mm) 板厚（mm）,在910930的保溫時間不低于1520分鐘。五、超聲波探傷根據(jù)低溫壓力容器用低合金鋼鋼板（GB3531-1996）要求，厚度大于20mm鋼板必須進行超聲波探傷，本次對試軋的32塊鋼板（未探傷的鋼板包括1塊甩廢、1塊非規(guī)格和因瓢曲無法探傷）全部進行了在線超聲波探傷，探傷標準采用GB2970(級)，探傷結(jié)果全部不合格，其中鋼種16MnDR-1(走VD)、16MnDR-2(不走VD)從探傷結(jié)果看區(qū)別不明顯。六、力學性能和工藝性能16MnDR力學性能國標：牌號鋼板厚度mm屈服強度Mpa抗拉強度Mpa伸長率%冷彎試驗b=2a 180沖擊試驗溫度沖擊功Akv（橫向）J16MnDR61631549062021d=2a-40271636295470600d=3a3660275450580-3027601002554505806.1、鋼板強度、伸長、冷彎性能試驗取樣15組序號鋼種規(guī)格mm爐號板號交貨狀態(tài)RelN/mm2RmN/mm2A%冷彎=180d=3a備注116MnDR-1302802696128AR+N38054032.5合格縱向39054031.5合格橫向216MnDR-1402802696-1129AR+N37554032.0合格縱向38055032.5合格橫向316MnDR-1502802696-2130AR+N37052531.0合格縱向37052530.5合格橫向416MnDR-1502802696-3132TMCP+N36553032.0合格縱向36553030.0合格橫向516MnDRMCP+N37053528.0合格縱向38055025.0合格橫向616MnDR-25028026983TMCP+N32547529.5合格縱向32047029.5合格橫向716MnDR-25028027004TMCP+N34549531.5合格縱向34549028.0合格橫向816MnDR-1402802696-47TMCP+N36552530.0合格縱向37553026.5合格橫向916MnDR-1402802695-111TMCP+N36053029.5合格縱向38554530.0合格橫向1016MnDR-2402802698-115TMCP+N36554029.5合格縱向35554528.5合格橫向1116MnDR-2402802700-119TMCP+N32548528.0合格縱向34049027.5合格橫向1216MnDR-1302802696-523TMCP+N33551030.5合格縱向32552028.5合格橫向1316MnDR-1302802695-227TMCP48561525.5合格縱向45559022.0合格橫向1416MnDR-2302802698-231TMCP+N37552531.0合格縱向37553033.0合格橫向1516MnDR-2302802700-235TMCP+N34550034.0合格縱向34050033.0合格橫向注：板號27由于冷卻后瓢曲無法正火，其中縱向抗拉強度達到615 N/mm2 超標。6.2、鋼板強度、伸長、性能分析6.3、鋼板低溫沖擊、時效沖擊16MnDR沖擊性能（15組）序號鋼種規(guī)格 mm爐號板號Akv J備注116MnDR-1302802696128260250250縱0250220210縱-20205195225縱-401007090縱-60250255260橫0165180195橫-20185165185橫-4012010090橫-60230200230時效0180200180時效-20140150160時效-40216MnDR-1402802696-1129275270265縱0260220250縱-20220220235縱-40205200215縱-60220190180橫0195180185橫-20145135170橫-40150155155橫-60190260260時效013013540時效-205520105時效-40316MnDR-1502802696-2130215220245縱0220210245縱-20210195180縱-409011090縱-60270260275橫0240205215橫-20180190200橫-40120130140橫-60190260245時效0185200185時效-20170190140時效-40416MnDR-1502802696-3132270250240縱0200225220縱-20190185200縱-40110100100縱-60250260255橫0195205215橫-20200200205橫-40120110100橫-60200180210時效0155160245時效-20155160170時效-40516MnDR-15028026951270295290縱0240250255縱-20275210270縱-40215195185縱-60265220255橫0170170195橫-20195205175橫-40190190155橫-60280230260時效0250195155時效-20170145210時效-40616MnDR-25028026983295280300縱0305240260縱-20200230215縱-40135150155縱-60280305310橫0210220230橫-20155165155橫-40155165180橫-60280300275時效0260300310時效-206017090時效-40716MnDR-25028027004155290300縱0285295300縱-20230240260縱-40235250265縱-60245270265橫0290250270橫-20220185215橫-40165180160橫-60260295280時效0270250285時效-20215220200時效-40816MnDR-1402802696-47295285280縱0245275255縱-20285225280縱-40210200215縱-60200235230橫0185195185橫-20240210160橫-40170160190橫-60235250260時效0205195210時效-20145165160時效-40916MnDR-1402802695-111220230255縱0210205210縱-2017090200縱-40150185190縱-60280270270橫0220235270橫-20215235195橫-40205210195橫-60230220225時效0200190155時效-20180135160時效-401016MnDR-2402802698-115290280260縱0280260290縱-20280220195縱-40210290285縱-60240240285橫0210225210橫-20150170165橫-40185165190橫-60270280260時效0275230170時效-20135130260時效-401116MnDR-2402802700-119135140155縱0130150145縱-20145130110縱-40100115125縱-60120140135橫0150100130橫-209595100橫-40908590橫-60120115105時效0120100115時效-209510585時效-401216MnDR-1302802696-523190165225縱0200190210縱-20100130120縱-4013590110縱-60160195160橫0185165220橫-20135120110橫-4011510080橫-60140160210時效0453540時效-20403025時效-401316MnDR-1302802695-227225200180縱0185160155縱-20150165155縱-40100145155縱-60150155160橫0140135120橫-2010011070橫-40100100140橫-60210200190時效0160185180時效-20705560時效-401416MnDR-2302802698-231305295300縱0300290315縱-20160160170縱-405180180縱-60250250250橫0250250270橫-20155160165橫-40165155150橫-60270225265時效0330300310時效-2013516510時效-401516MnDR-2302802700-235340330340縱0325340350縱-20265275240縱-40220260270縱-60325340320橫0300310320橫-20235255265橫-40130280275橫-60325330295時效0350245325時效-20305265210時效-40從上述圖示分析來看，采用AR+N、TMCP+N三種規(guī)格的強度、塑性、低溫沖擊都能滿足國標要求，其中強度、低溫沖擊指標富余量較大，低溫時效沖擊指標也很理想，AR+N、TMCP+N兩種工藝區(qū)別不明顯，總體上TMCP+N工藝各項指標比較穩(wěn)定，且低溫韌性比AR+N較好。七、金相組織分析金