Zida Zamagetsi za Ductile Cast Iron Mechanical

Ductile cast iron, yomwe imatchedwanso nodular iron kapena spheroidal graphite (SG) cast iron, si chinthu chimodzi koma ndi gawo la gulu la zipangizo zomwe zingathe kupangidwa kuti zikhale ndi katundu wambiri pogwiritsa ntchito microstructure. Nodular kuponyedwa chitsulo amapeza nodular graphite kudzera spheroidization ndi inoculation mankhwala, amene bwino bwino makina katundu wa chitsulo chotayidwa, makamaka plasticity ndi kulimba, kuti apeze mphamvu apamwamba kuposa mpweya zitsulo. Nodular cast iron ndi chitsulo champhamvu champhamvu kwambiri. Makhalidwe ake onse ali pafupi ndi chitsulo. Kutengera ndi zinthu zake zabwino kwambiri, chitsulo cha ductile chagwiritsidwa ntchito bwino poponya zigawo zamphamvu zovuta, mphamvu, kulimba komanso kukana kuvala. Nodular cast iron yakula mwachangu kukhala chitsulo choponyedwa chachiwiri ku chitsulo chotuwira ndipo chimagwiritsidwa ntchito kwambiri. Zomwe zimatchedwa "chitsulo cholowa m'malo mwachitsulo" makamaka zimatanthawuza chitsulo cha ductile. Chitsulo chachitsulo nthawi zambiri chimagwiritsidwa ntchito popanga zida za crankshafts ndi camshafts zamagalimoto, mathirakitala, ndi injini zoyatsira mkati, komanso ma valve opanikizika apakati pamakina ambiri.

Chikhalidwe chodziwika bwino cha chitsulo cha ductile cast ndi mawonekedwe a graphite. Muzitsulo za ductile, graphite ili mu mawonekedwe a nodule osati ma flakes monga momwe ili mu chitsulo chotuwa. Maonekedwe akuthwa a ma flakes a graphite amapangitsa kuti pakhale kupsinjika kwachitsulo mkati mwazitsulo zachitsulo komanso mawonekedwe ozungulira a tinthu tating'onoting'ono tochepa, motero amalepheretsa kupanga ming'alu ndikupereka ductility yowonjezera yomwe imapatsa aloyi dzina lake. Mapangidwe a tinthu tinatake tozungulira amatheka ndi kuwonjezera nodulizing zinthu, makamaka magnesium (onani magnesium zithupsa pa 1100 ° C ndi chitsulo amasungunuka pa 1500 ° C) ndipo, mocheperapo tsopano, cerium (nthawi zambiri mu mawonekedwe a Mischmetal). Tellurium imagwiritsidwanso ntchito. Yttrium, yomwe nthawi zambiri imakhala chigawo cha Misch zitsulo, idaphunziridwanso ngati nodulizer yotheka.