1 厚大球墨铸铁件的生产技术 g12131g3775g12197g19148g17908g7460g7021g1025g3281g7389g19492g1856g2508 g19484g4388g2338 g6700g16213g726g7424g7003g1183g13473g1114g2414g3835g10711g3708g19148g19093g1226g10995g1147g17819g12255g1025g4493g7143g1147g10995g11352g13582g19531,g1866g11352g5430g6116g2419g3252g2656g6523g2058g6526g7057g727g2010g7524g1114g2414g3835g10711g19093g1226g11352g4393g13958g10317g9869g5194g18337g9869g6524g14628g1114g4557g10995g1147g2414g3835g10711g3708g19148g19093g1226g10995g1147g7509g1038g7389g11422g11352g20056g3800g10714g6228g7427g2656g9921g2010g7524g6228g7427g712g4600g1866g7171g9921g2010g7524g6228g7427g11352g1998g10628g2656g5224g11004g712g1038g2414g3835g10711g3708g19148g19093g1226g1047g14279g6164g7389g19148g1226g11352g10995g1147g6564g1391g1114g7389g6940g11352g12197g4410g11352g6363g4560g452 Abstract: This paper introduced the main types of defects in the production of the heavy sectioned and big ductile iron casting, analyzed the formation reason for these defects and pointed out the way to prevent them; it also analyzed the characters of the inoculation for this kind of casting and especially recommended two very beneficial and effective technologies : preconditioning process and ITACA thermal analysis technology .the coming and application of ITACA thermal analysis tool supply a most scientific and effective guidance for the manufacturing of the heavy sectioned ductile iron casting and even for all the kinds of castings. 1g451g8022g17860 g17829g5192g7481,g19555g11540g10711g3708g19148g19093g1226g10995g1147g6228g7427g11352g17839g8505g2656g7044g11352g5224g11004g20058g3507g11352g993g7041g1998g10628,g2414g3835g10711g3708g19148g19093g1226g11352g10995g1147g1998g10628g1114g15040g2199g11352g2469g4649,g1375g3926,g19555g11540g20130g2159g2469g11017g11352g5567g17907g2469g4649,g20130g2159g2469g11017g16786g3803g1025g11352g17730g8598g451g3534g5243g12573g2414g3835g19148g1226g3355g18331g11004g10711g3708g19148g19093g17839g15904g10995g1147g727g19555g11540g1002g11040g14551g3272g1881g11352g17908g14349g1006g11352g1889g8437g1864g17227g712g3835g3423g14349g14346g7624g8845g7438g11352g2469g2172g7438g13580g1319g451g13580g11434g1075g17246g7481g17246g3822g11352g18331g11004g10711g3708g19148g19093g1226g17839g15904g10995g1147g452 g4557g1122g2414g3835g10711g3708g19148g19093g1226g712g6117g1216g16860g16782g11352g5468g3822g712g1306g980g11464g1209g7481g18129g8821g7389g980g1022g4462g1053g712g980g14336g13792g16340g712g16213g1052g7171g1866g3733g2414g5468g2414g3835g708g3835g1122100mmg709g712g16213g1052g7171g1866g18337g18339g17751g18337g708g2345g1226g18337g18339g3835g11223g2556g709g712g6122g13785g7171g1016g13785g1872g13792g7389g1055g712g10628g3324g11352g2414g3835g10711g3708g19148g19093g1226g712g3822g7171g1209g990g1016g13785g1872g13792g7389g1055g712g3926g20130g2159g2469g11017g1025g11352g17730g8598g712g19555g11540g20130g11017g2163g10587g11352g993g2528g712g1866g18337g18339g33243g25215g2556g1055g19400g712g2414g3835g18108g2010g11352g3733g2414g1075g3822g3324100mmg1209g990g712g3835g3423g14349g14346g7624g8845g7438g11352g13580g1319g712g1866g18337g18339g1075g33244-40g2556g712g2414g3835g18108g2010g11352g3733g2414g1075g17810160mmg1209g990g452g1866g1861g2528g9869g7171g19148g1226g3733g2414g2414g3835g451g18337g18339g18337g451g1931g2376g17907g5242g5942g2656g1969g3278g7114g19400g19283g452 g1288g19555g11540g10995g1147g6228g7427g11352g17839g8505g2656g2469g4649g1209g2462g19148g1226g7393g20545g7477g1226g11352g2476g2282g712g4557g2414g3835g10711g3708g19148g19093g1226g11352g16213g8726g1075g17246g7481g17246g20652g712g3926g4557g1122g20130g2159g2469g11017g11352g17730g8598g12573g19148g1226g712g3252g1038g1866g5049g1328g10627g3671g11352g5706g2167g708g7389g7114g5049g1328g3324-2g19g263g10990g14279g7368g1314g709g2656g13512g1474g6116g7424g11352g20652g7126g712g4557g1122g17837g12879g19148g1226g11352g16213g8726g19762g5132g1055g20652g712g16277g159321g726 g159321 g7389g1314g9213g1926g1999g16213g8726g11352QT400-18g7438g7812g5627g14033g16213g8726 g5627g14033 g16213g8726 g6251g6301g5390g5242g708MPag709 400 g4636g7393g5390g5242g708MPag709 240 g5322g1292g10587 g708%g709 18 g5079g8675g11840g5242g708HBg709 160-170 12g708g989g1022g16809g7691g11352g5191g3355g1552g709 g1926g1999g1552g708Jg709-2g19g263 9g708g2345g1022g16809g7691g11352g7380g1314g1552g709 g13792g16213g17810g2052g1209g990g16213g8726g712g1866g3534g1319g3534g7424g990g7171g19093g13044g1319g708g10676g1821g1319g1314g112210%g709g712g10711g2282g10587g332490%g1209g990g712g2345g1313g19766g12227g11352g11719g3708g10711g6980g3324100-300g1022g712g8821g7389g3853g7446g2656g7186g5506g13565g7506g712g2528g7114g19148g1226g11352g13468g11801g18339g33241.8-2.4%,g2554g2029g5468g19602g17810g2052g1209g990g16213g8726.g13792g16213g17810g2052g1209g990g16213g8726,g11468g4557g1122g17902g5132g3733g2414g2656g18337g18339g11352g19148g1226g13792g16340,g10995g1147g19602g5242g16213g3835g11352g3822g712g1866g4557g2419g7460g7021g11352g16213g8726g451g10711g2282g4393g13958g5049g14414g3355g7389g5468g3835g11352g993g2528g452 2g714g2414g3835g10711g3708g19148g19093g1226g10995g11