Malleable Cast Iron

Choncho, mapangidwe ake ndi ofanana ndi chitsulo choyera, chokhala ndi carbon ndi silicon yambiri. Chitsulo chosungunuka chimakhala ndi tinthu tating'onoting'ono ta graphite tomwe timakhala tozungulira ngati tili mu chitsulo cha ductile chifukwa amapangidwa kuchokera ku chithandizo cha kutentha m'malo mozizira kuchokera kusungunuka. Chitsulo chosasunthika chimapangidwa poyamba kuponya chitsulo choyera kuti ma flakes a graphite apewedwe, ndipo kaboni yonse yosasungunuka imakhala ngati iron carbide. Chitsulo chosungunuka chimayamba ngati chitsulo choyera chomwe chimatenthedwa kwa tsiku limodzi kapena awiri pa 950 °C (1,740 °F) kenako chimazizira kwa tsiku limodzi kapena awiri. Zotsatira zake, mpweya mu iron carbide umasintha kukhala ma graphite nodule ozunguliridwa ndi matrix a ferrite kapena pearlite, kutengera kuzirala. Kuchita pang'onopang'ono kumapangitsa kuti kugwedezeka kwapansi kupange ma graphite nodules osati ma flakes. Chitsulo chosungunuka, monga chitsulo cha ductile, chimakhala ndi ductility kwambiri ndi kulimba chifukwa chimaphatikiza nodular graphite ndi low carbon metallic matrix. Monga chitsulo cha ductile, chitsulo chosasunthika chimawonetsanso kukana kwambiri ku dzimbiri komanso machinability. Kuchuluka kwachitsulo chosungunuka ndi mphamvu ya kutopa ndizothandizanso pakugwira ntchito kwanthawi yayitali m'malo opsinjika kwambiri. Pali mitundu iwiri ya chitsulo chosungunuka cha ferritic: blackheart ndi whiteheart.

Nthawi zambiri amagwiritsidwa ntchito popanga zing'onozing'ono zomwe zimafuna mphamvu zolimba komanso kutha kusinthasintha popanda kusweka (ductility). Kuyika kwa chitsulo chosungunuka kumaphatikizapo mbali zambiri zamagalimoto zofunika monga zonyamulira zosiyanitsira, masitayilo osiyanitsira, zipewa zonyamulira, ndi nyumba zowongolera. Ntchito zina ndi monga zida zamanja, mabulaketi, zida zamakina, zoyikamo magetsi, zoyikapo mapaipi, zida zaulimi, ndi zida zamigodi.