Phakathi kweendidi ezahlukeneyo zokuphosa i-alloys, intsimbi enganyangekiyo yokuphosa yintsimbi esetyenziswa ngokubanzi. Ukunxiba-resistant cast intsimbi ikakhulu iphucula ukumelana ukunxibaiintsimbi zentsimbingokudibanisa imixholo eyahlukeneyo yezinto ezixutyiweyo, ezifana nemanganese, ichromium, ikhabhoni, njl., kwialloyi. Kwangaxeshanye, ukuxhathisa ukunxitywa kwentsimbi enganyangekiyo kwintsimbi kuxhomekeke kwindlela yonyango lobushushu esetyenziswa yiisisekokunye nesakhiwo sokubunjwa.
Ngokweempawu ezahlukeneyo zokunxiba, ukunxitywa kweentsimbi zentsimbi kunokohlulwa kube kukunxitywa kwe-abrasive, ukuncamathelisa okuncamathelayo, ukudinwa, ukunxitywa kwe-corrosion kunye nokunxiba okukhathazayo. Iintsimbi zentsimbi ezinganxibiyo zisetyenziswa kakhuluamasimi amashishiniezineemeko ezinzima zokusebenza kunye neemfuno eziphezulu zokusebenza koomatshini, njengemigodi, isinyithi,ukwakhiwa, amandla, i-petrochemical, ukugcinwa kwamanzi,ezolimokunye namashishini ezothutho. Ukulahlwa kwentsimbi ekwaziyo ukunxiba kusetyenziswa kakhulu kwiimeko zokuqhawuka kunye nomthwalo othile wempembelelo, njengezixhobo zokusila, ii-excavators, izityum, iitrektara, njl.
Kwishishini le-Foundry, iintlobo ezixhaphakileyo zentsimbi ekhatywayo engagugiyo ziquka intsimbi engagugiyo yemanganese, intsimbi yechromium engagugiyo, intsimbi edityanisiweyo ephantsi yealloyi ephantsi kunye nentsimbi yekhabhoni ekwaziyo ukunxiba. Kwi-RMC Foundry, intsimbi enganyangekiyo yokuphosa inokuphoswa ngeenkqubo ezininzi zokuphosa ezibandakanyaukugalela isanti eluhlaza, ukugaywa kwesanti egqunywe ngentlaka, ukungabhaki ukubunjwa, utyalo-mali, ukuphosa ugwebu kunyeukugalela ngevacuum.
1) Intsimbi yeManganese eNganyangekiyo
Ngokomxholo wemanganese eyahlukileyo, intsimbi enganyangekiyo yemanganese yokugalela yahlulwe ikakhulu kwintsimbi ephantsi yemanganese engagungqiyo, intsimbi ephakathi yemanganese ekwaziyo ukunxiba kunye nentsimbi ephezulu enganyangekiyo. Intsimbi yemanganese ekwaziyo ukunxiba inokuqina okuphezulu kwaye akukho lula ukuyiqhawula ngexesha lokusetyenziswa. Kwangaxeshanye, inomsebenzi ogqwesileyo wokuqiniswa kweempawu, ngoko ke intsimbi ye-manganese ekwaziyo ukunxiba ifanelekile kwiimeko zokunxitywa kwe-abrasive.
Amabanga aqhelekileyo asetyenziswayo entsimbi ye-manganese enganyangekiyo yokugalela ngala: M13 (Hadfield Steel), Mn5, Mn6, Mn7, Mn8, Mn17 ZG120Mn7Mo1, ZG120Mn13, ZG120Mn13Cr2, J9119, J911130, J911349, J91149, J91149, J91149, J91149, J91139
2) Intsimbi ye-Chrome engaguqukiyo
Intsimbi ye-chromium engaguqukiyo yokuphosa ilungelelanisa ukuqina kunye nokumelana nokunxiba kwentsimbi etyhidiweyo ngokongeza inani elifanelekileyo lechromium kwintsimbi yealloy. Ukwandisa umxholo we-chromium kwintsimbi yekhabhoni ephakathi kunokuphucula ukuqina kwentsimbi kunye nokuphucula ukuqina kwentsimbi. Ukongeza inani elincinci le-molybdenum kunokuphucula ngakumbi ukuqina kwentsimbi. Indlela yonyango lobushushu yentsimbi ye-chromium ekwaziyo ukunxiba iqhelekile ukucima ubushushu obuphezulu + ubushushu obuphantsi. Kufuneka kuqatshelwe ukuba njengoko umxholo wekhabhoni yentsimbi ye-chromium engaguqukiyo inyuka nangaliphi na ixesha, ubunzima bentsimbi yensimbi buya kunyuka, kodwa ukuqina kwayo kuya kuncipha.
Amabanga aqhelekileyo asetyenziswayo kwintsimbi ye-chromium enganyangekiyo yokugalela ngala: ZG30CrMo, ZG35CrMo, ZG40Cr, ZG40CrMo, ZG42CrMo, ZG50CrMo, njl.
3) Nxiba-Resistant Low-alloy Cast Steel
Insimbi ye-alloy ephantsi ibhekisela kwintsimbi ye-alloy kunye nomxholo we-alloying element engaphantsi kwe-5%. Ekubeni ukuqina kunye nokuqina kwentsimbi ephantsi ye-alloy cast inokulungelelaniswa kuluhlu olukhulu kakhulu, intsimbi enganyangekiyo ephantsi kwe-alloy cast isetyenziswa ngokubanzi nangaphezulu. Xa ukhetha isinyithi sokugalela kunye nendlela yonyango lobushushu, kuyimfuneko ukuqwalasela ngokubanzi amandla, amandla empembelelo kunye nokumelana nokunxiba kwentsimbi ephantsi yealloyi yokunxiba-resistant ukuphumeza eyona mpembelelo ifanelekileyo. Izinto eziqhelekileyo ze-alloying kwi-low-alloy wear-resistant cast cast steel ziquka i-molybdenum, i-chromium, i-manganese, i-nickel, kunye ne-silicon.
Amanqanaba aqhelekileyo asetyenziswayo kwintsimbi ephantsi ye-alloy-resistant-resistant for casting are: ZG30Mn2Si, ZG30Mn2SiCr, ZG30CrMnSiMo, ZG30CrNiMo, ZG40CrNiMo, njl.
I-4) Intsimbi yeCarbon eNgqobileyo
Ukumelana nokunxiba kwe-carbon steel ifumaneka ikakhulu ngokuqiniswa komphezulu we-castings yensimbi. Xa umxholo wekhabhoni ungaphezu kwe-0.35%, ukuqina kwe-surface induction ngokuqhelekileyo kusetyenziswa phezu kwendawo yokuphosa insimbi. Xa umxholo wekhabhoni ungaphantsi kwe-0.35%, i-carbon steel castings ingaba yi-carburized, i-nitrided okanye i-carbonitrided ukuphucula ukuxhatshazwa kwayo.
Ixesha lokuposa: Feb-02-2021