Cov nyhuv ntawmspheroidizer(nodularizer)ntawm cam khwb cia hlau yog ob npaug:

1, Tsis tshua muaj lub ntiaj teb raws li nodulating tus neeg sawv cev yaj nyob rau hauv molten hlau muaj ib tug muaj zog cov nyhuv ntawm kev tsim carbide.Nws yog ib tug antigraphitized keeb. Txawm li cas los, ntxiv ib tug me me npaum li cas ntawm lub ntiaj teb tsis tshua muaj nyob rau hauv magnesium-based spheroidizer tuaj yeem ua rau kom lub melting nqi ntawm cam khwb cia. Hlau.Txo; Yog tias qhov sib ntxiv yog qhov loj, qhov nyiam ntawm cam khwb cia hlau yuav raug txhim kho.Qhov no zoo li tsis sib haum xeeb tshwm sim tsis yog qhov tseeb contradictory.Qhov ntawd yog vim tsis tshua muaj lub ntiaj teb muaj peev xwm ua ke nrog cov sulfur thiab oxygen.

2, Thaum twgspheroidizerMuaj cov ntsiab lus tsis tshua muaj hauv ntiaj teb, nws cov sulfide thiab oxides ruaj khov heev, me me particle loj, nws nyuaj rau ntab hauv cov hlau molten. Tsis tas li ntawd, qhov tsis sib haum xeeb ntawm cov tebchaw thiab cov graphite lattice yog qhov me me thiab tuaj yeem siv los ua heterogeneous precipitates. graphite nuclei.Magnesium oxide MgO yog ib tug spheroidizing tus neeg sawv cev nrog siab melting point, zoo stability thiab tsis muaj solubility nyob rau hauv molten hlau, tab sis thaum lub particle loj me ntsis, nws yuav ntab mus rau saum npoo los ua scum, los yog tej zaum yuav muaj kev koom tes nyob rau hauv lub molten hlau. casting ntawm slag suav nrog.

Nodulizer(ReMgSiFe), yog ib qho ntxiv uas tuaj yeem txhawb kev tsim cov spheroidal graphite los ntawm graphite pieces hauv cov txheej txheem ntau lawm.Nws tuaj yeem txhawb nqa spheroidal graphites thiab nce tus naj npawb ntawm spheroidal graphites kom lawv cov khoom siv kho kom zoo tuaj.Yog li ntawd, ductility thiab toughness ntawm cov khoom tau raug txhim kho kom lawv lub zog thiab kev ua haujlwm tau zoo heev.

Qhov hnyav tsawg-lub ntiaj tebnodulizerstxaus siab rau lub peev xwm muaj zog nrog kev tiv thaiv kev lag luam, tiv thaiv kev cuam tshuam thiab kev cuam tshuam hauv kev tsim khoom.Nws cov magnesia yeej tswj tau li ntawm 0.6%.Nrog ruaj khov thawj molten hlau thiab matured nodulizing tshuab, cov seem magnesium tuaj yeem tswj tau ruaj khov.