Ngwaahịa nkedo ígwè isi awọ sitere na nkedo ájá

Ihe nkedo isi awọ bụ metal ferrous nke cimentite ya na-aghọ ígwè na carbon n'ụdị graphite nke a na-akpọ graphitization cast irons ebe nnukwu pasent cementite na-emebi site na graphitization.

Arụmọrụ nke ihe nkedo igwe isi awọ:
• Ígwè isi awọ mmiri mmiri nwere ezigbo mmiri, na ụda olu ya na mbelata nke ahịrị dị ntakịrị, na mmetụta uche dị ntakịrị.
• ala keukwu n'ibu Njirimara, compressive ike bụ banyere 3 ~ 4 ugboro elu karịa tensile ike
• Mmụba ujo dị mma, mgbanye ujo nke ígwè isi awọ dị ihe dị ka okpukpu iri karịa nke ígwè nkedo.
• Ígwè isi awọ nwere obere modul nke elasticity

Njirimara nhazi nke ihe nkedo ígwè isi awọ:
• Obere ọkpụrụkpụ mgbidi na ụdị mgbagwoju anya dị
• Nchegbu fọdụrụnụ nke nkedo dị ntakịrị
• E kwesịghị iji ihe owuwu buru ibu mee ihe nkedo ígwè isi awọ, a na-ejikarị akụkụ asymmetrical na-eji ike mkpakọ ha eme ihe n'ụzọ zuru ezu.

Usoro nkedo ájána-enye mgbanwe kachasị ukwuu na ngwá ọrụ kachasị ọnụ ahịa. Ebe a na-emepụta ihe nkedo ájá anyị nwere ụlọ nyocha igwe zuru oke iji chọpụta njirimara kemịkalụ na n'ibu nke ọ bụla gbazee yana nyochaa ọnọdụ ọla nke ọla a wụrụ awụ tupu awụsa ya. A na-enyocha microsections n'okpuru microscope iji nweta ozi ikpeazụ na nkedo siri ike. Anyị na-enye 3.1 akwụkwọ maka akụkụ ọ bụla anapụtara na arịrịọ ndị ahịa. Igwe ihe nkedo bụ alloys ferrous nke nwere ọdịnaya carbon karịa 2%. Ọ bụ ezie na nkedo ígwè nwere ike ịnwe pasent carbon n'etiti 2 ruo 6.67, njedebe bara uru na-adịkarị n'etiti 2 na 4%. Ndị a dị mkpa karịsịa n'ihi àgwà nkedo ha mara mma. Ihe nkedo isi awọ na ígwè nkedo ductile (nke a na-akpọkwa ígwè nkedo nodular ma ọ bụ ígwè graphite spheroidal).

Uru anyị dị na ubi nkedo ájá:
• Ahụmahụ ọtụtụ iri afọ na nkedo ájá, nkedo ịkpụzi shei na teknụzụ igwe.
• cores ziri ezi n'ụdị maka akụkụ dị n'ime dị mgbagwoju anya.
• Nnukwu ndụmọdụ nke na-amalite na nhazi nhazi.
• njikwa mma n'oge usoro mmepụta na usoro ntụkwasị obi kachasị.

Ọkwa nke igwe isi awọ dị na RMC Sand Casting Foundry: HT150, HT200, HT250, HT300, HT350; GJL-100, GJL-150, GJL-200, GJL-250, GJL-300, GJL-350; GG10-GG40.

RMC, ụlọ ọrụ igwe nke China, na-emepụta ngwaahịa nkedo ígwè dị iche iche maka ndị ahịa si mba ofesi na USA, Australia, UK, Spain, Germany, Norway, Finland, Russia na Italy. Mmepụta dịka ụkpụrụ ASTM A48, A536; DIN 1691, 1693; ISO 185, 1083; EN 1561, 1563; DIN 1691, 1693; AS 1830, 1831; JIS, UNI, NF, BS, UNF, NBN, AS, SS, NS. Ọkwa ihe gụnyere:

ISO185: 100 150 200 250 300
ASTM A48: NO.20 NỌ.25 NỌ.30 NỌ.
DIN 1691: GG10 GG15 GG20 GG25 GG30
EN 1561: EN-GJL-100 EN-GJL-150 EN-GJL-200 EN-GJL-250 EN-GJL-300
BS 1452: 100 150 200 250 300
AS 1830: T150 T220 T260 T300

Usoro mmepụta:
Nkedo ájá, ịkpụzi akpaaka, igwe ịkpụzi, Shell Molding, Green Aja Casting, Resin Aja Casting”

Ngwa igwe isi awọ:
Ihe na-esonụ bụ ngwa a na-ahụkarị maka ogo ọ bụla nke nkedo isi awọ maka ntụaka gị.

HT100 (GG10, EN-GJL-100):
Maka obere ibu, esemokwu na eyighị ihe pụrụ iche chọrọ maka nkedo dị mkpa, dị ka mkpuchi mkpuchi, mkpuchi, mmanụ mmanụ, wiil aka, etiti, ala, hama, obere aka, wdg.

HT150 (GG15, EN-GJL-150):
N'okpuru ibu nkedo na-agafeghị oke, dị ka isi, etiti, igbe, mma, akwa, oche ebu, tebụl, wiil, mkpuchi, mgbapụta, valvụ, ọkpọkọ, flywheel, moto blocks na ndị ọzọ.

HT200 (GG20, EN-GJL-200):
Ihe ndị a chọrọ na-anagide ibu dị ukwuu yana ụfọdụ njigide ma ọ bụ nguzogide corrosion nke nkedo dị mkpa dị ka cylinder, gear, base, flywheels, bed, cylinder block,cylinder liner, piston, gia igbe, breeki wheel, njikọta efere, ọkara mgbali valvụ, wdg.

HT300(GG30, EN-GJL-300):
N'okpuru ibu dị elu, iyi na ikuku siri ike dị mkpa nkedo dị mkpa, dị ka ngwa igwe dị arọ, ịkwa akwa, akwa akwa, akwa akwa akpaaka, etiti, etiti, akụkụ hydraulic nrụgide dị elu, mgbanaka piston, ike ibu ibu, Cams, bushings, nnukwu engine crankshaft , cylinder block, cylinder liner, cylinder head, etc.