Olee otú iji melite n'ibu Njirimara nke nkedo isi awọ iron?
Igwe ntụ ntụ bụ iron-carbon alloy nke akụkụ ya na-acha ntụ. Site na njikwa nke ihe mejupụtara na usoro mmezi ahụ, carbon na-apụtakarị n'ụdị flake graphite. Igwe ihe eji eme ihe na agba ocha nke nwere isi ocha bu nke mejuputara flake graphite, matriks na metal na eutectic.
Ọnụnọ nke flake graphite na isi awọ na-ebibi mbibi nke igwe ahụ ma mee ka isi awọ kpụọ ihe na-emebi emebi. Ma, ihe nkedo na-acha ntụ ntụ bụ otu n’ime ihe ndị e ji ígwè rụọ na mbụ. Iron cast nwere ọtụtụ ihe. N'ihi ogologo oge, na mmepụta omume, anyị achikota ụfọdụ nkịtị jikoro ka mma ike ọdụdọ nke isi awọ ígwè. N'okpuru ụfọdụ ọnọdụ, anyị nwekwara ike melite ịcha arụmọrụ, eyi eguzogide na ujo absorption arụmọrụ nke isi awọ igba ígwè.
Na mmepụta ihe nkedo, ọnụ ọgụgụ ka ukwuu nke ígwè na-acha ntụ bụ hypoeutectic. Ya mere, iji meziwanye ike ike ya, ekwesiri ime ihe ndi a dika o kwere mee:
1) Kwe nkwa na isi awọ nwere iron na - etolite etolite mbu austenite dendrites n’oge nkwusi
2) Belata ego nke graphite eutectic ma mee ka kesaa ya nke ọma na ụdị graphite A
3) Mee ka ọnụ ọgụgụ nke ụyọkọ eutectic dịkwuo elu
4) N'oge mgbanwe eutectoid nke austenite, ihe niile gbanwere na matriki pearlite mara mma
Na mmepụta nke nkedo nkedo isi awọ, anyị na-ejikarị usoro ndị a iji nweta nsonaazụ ndị dị n'elu:
1) Họrọ ihe mejupụtara kemịkal nwere ezi uche
2) Gbanwee mejupụtara nke ebubo ahụ
3) Okpomoku a wụrụ awụ ígwè
4) Inoculation ọgwụgwọ
5) Chọpụta ma ọ bụ obere alloying
6) Ọgwụgwọ ọgwụgwọ
7) Mee ka obi jụrụ oyi n'oge mgbanwe eutectoid
Specifickpụrụ ndị a ga-ewere dabere n'ụdị nkedo isi awọ, ihe ndị achọrọ na ọnọdụ imepụta akọwapụtara. Otú ọ dị, ọ na-adịkarị mkpa ịme ihe abụọ ma ọ bụ karịa iji nweta arụmọrụ a chọrọ nke ígwè nkedo.
Post oge: Dec-28-2020