DIN EN877 Nkedo ígwè ọkpọkọ na ihe ndozi, ọrụ ngwaahịa igwe isi awọ, ụlọ ọrụ izizi nke China

Ihe nkedo isi awọ na-ezo aka na nkedo nke nwere flake graphite, nke a na-akpọ ígwè nkedo isi awọ n'ihi na mgbaji ahụ na-agbaji isi awọ mgbe agbajiri agbaji. Ihe ndị mejupụtara ya bụ ígwè, carbon, silicon, manganese, sọlfọ, na phosphorus. Ọ bụ ígwè nkedo a na-ejikarị eme ihe na mmepụta ya na-ewe ihe karịrị 80% nke mkpokọta ihe nkedo. Igwe nkedo isi awọ nwere ihe nkedo dị mma na ịkpụcha ihe yana ezigbo nguzogide eyi. A na-eji emepụta racks, cabinets, wdg. graphite dị na nkedo isi awọ dị n'ụdị flakes, ebe a na-emepụta ihe dị irè dị ntakịrị, na graphite n'ọnụ na-adịkarị mfe itinye uche, ya mere ike, plasticity, na siri ike nke isi awọ. igwe nkedo dị ala karịa igwe nkedo ndị ọzọ. Mana ọ nwere oke ịma jijiji mara mma, enweghị mmetụta dị ala, yana oke iyi uwe.

Igwe nkedo isi awọ nwere ọdịnaya carbon dị elu dịtụ elu (2.7% ruo 4.0%), nke enwere ike were dị ka matriks nke carbon steel yana flake graphite. Dị ka usoro matrix dị iche iche si dị, a na-ekewa ígwè nkedo isi awọ ụzọ atọ: ferrite matrix gray cast iron; pearlite-ferrite matrix nkedo isi awọ; pearlite matrix nkedo isi awọ

Ka ọ dị ugbu a, igwe nkedo isi awọ anyị na-abụkarị nkedo igwe na-agbapụta ọkpọkọ.