Ngwongwo arụrụ arụ nke igwe nkedo Ductile

Ihe nkedo nke olulu, nke a na-akpọkwa ígwè nodular ma ọ bụ spheroidal graphite (SG) nkedo ígwè, abụghị otu ihe kama ọ bụ akụkụ nke otu ihe nwere ike ịmepụta ka ọ nwee ọtụtụ ihe onwunwe site na njikwa nke microstructure. Ngwongwo nkedo nodular na-enweta graphite nodular site na spheroidization na ọgwụgwọ inoculation, nke na-eme ka ihe eji arụ ọrụ nke ígwè nkedo dịkwuo mma, karịsịa plasticity na ike siri ike, iji nweta ike dị elu karịa carbon ígwè. Igwe nkedo nodular bụ ihe nkedo dị elu. Njirimara ya zuru oke dị nso na ígwè. Dabere na njirimara ya magburu onwe ya, ejirila ígwè ductile mee ihe nke ọma maka ịwepụta ihe ndị dị mgbagwoju anya, ike, ike na nkwụsị iyi. Igwe nkedo nodular etolitela ngwa ngwa ka ọ bụrụ ihe nkedo nke abụọ na nke nkedo isi awọ ma jiri ya mee ihe. Ihe a na-akpọ "ígwè nọchiri anya ígwè" na-ezo aka na ígwè ductile. A na-ejikarị ígwè eme ihe na-emepụta akụkụ maka crankshafts na camshafts maka ụgbọ ala, traktọ, na engine combustion n'ime, yana valves nrụgide maka igwe n'ozuzu.

Ihe a na-akọwakarị nke nkedo ductile bụ ọdịdị nke graphite. Na ductile ígwè, graphite dị n'ụdị nodules kama flakes dị ka ọ dị na isi awọ ígwè. Ọdịdị dị nkọ nke flakes nke graphite na-emepụta ihe mgbakasị nchekasị n'ime metal matrix na ọdịdị gburugburu nke nodules na-erughị ya, si otú a na-egbochi mmepụta nke cracks na inye ductility emelitere nke na-enye alloy aha ya. A na-enweta nhazi nke nodules site na mgbakwunye nke ihe nodulizing, nke a na-ejikarị magnesium (mara magnesium na-esi na 1100 Celsius C na ígwè na-agbaze na 1500 ° C) na, obere oge ugbu a, cerium (na-emekarị n'ụdị Mischmetal). A na-ejikwa Tellurium mee ihe. A mụọkwara Yttrium, nke na-abụkarị akụkụ nke Misch metal, dị ka ihe nwere ike ime nodulizer.