Na okpomọkụ ọgwụgwọ nke forging, n'ihi na nnukwu ike nke ikpo ọkụ ọkụ na ogologo mkpuchi oge, ike oriri bụ nnukwu na dum usoro, na a ogologo oge nke oge, otú e si azọpụta ike na okpomọkụ ọgwụgwọ nke forging kemgbe. nsogbu siri ike.

Ihe a na-akpọ "ihe mkpuchi efu" quenching, bụ na-arụtụ aka na kpo oku forging, elu ya na isi ruo quenching okpomọkụ okpomọkụ, ọ dịghị mkpuchi, ozugbo quenching jụrụ usoro. Dị ka omenala austenitic tiori, ndị forging ga-enwe ogologo oge. oge mkpuchi na usoro kpo oku, nke mere na iji mezue nucleation na uto nke ọka austenitic, mgbasa nke cementite residual na homogenization nke austenitic. A na-emepụta teknụzụ ọkụ ugbu a na ikpo ọkụ nke forgings n'okpuru nduzi nke ozizi a. ugbu a quenching usoro, "efu okpomọkụ ichekwa" quenching na-azọpụta oge nke okpomọkụ ichebe chọrọ site homogenization nke austenitic Ọdịdị, ọ bụghị naanị nwere ike ịzọpụta 20% -30% nke ume, melite mmepụta arụmọrụ 20% -30%, ma nwekwara ike ibelata. ma ọ bụ kpochapụ ntụpọ nke oxidation, decarbonization, deformation na ihe ndị ọzọ, nke na-eme ka mma nke ngwaahịa dị mma.

Mgbe carbon ígwè na obere alloy ígwè na-ekpo ọkụ na Ac1 ma ọ bụ Ac2, usoro homogenization nke austenite na mgbasa nke carbides na pearlite na-adị ngwa ngwa.Mgbe nha ígwè dị n'akụkụ akụkụ ahụ dị mkpa, ngụkọta oge okpomọkụ adịghị mkpa ka a tụlee ya. The thermal mkpuchi, ya bụ, iji nweta efu thermal mkpuchi quenching. Dị ka ihe atụ, mgbe dayameta ma ọ bụ ọkpụrụkpụ nke 45 ígwè workpiece bụ ihe karịrị 100mm, kpo oku na ikuku oku, okpomọkụ nke elu na isi fọrọ nke nta ka ruru na N'otu oge ahụ, ya mere enwere ike ileghara oge ejiji ya anya, ma e jiri ya tụnyere usoro mmepụta omenala (r=aD) nwere nnukwu ọnụọgụ ọkụ, enwere ike ibelata ihe fọrọ nke nta ka ọ bụrụ 20%-25% na-emenyụ oge okpomọkụ.

The theoretical analysis and experimental results na-egosi na ọ ga-ekwe omume ịnakwere "ihe mkpuchi efu" na-emenyụ na normalize kpo oku nke structural steel. Karịsịa, 45, 45 mn2 carbon structural steel ma ọ bụ otu element alloy structural steel, ojiji nke "efu mkpuchi" usoro nwere ike hụ na n'ibu Njirimara nke chọrọ; 45, 35CrMo, GCrl5 na ndị ọzọ structural ígwè workpiece, ojiji nke "efu mkpuchi" kpo oku karịa omenala kpo oku nwere ike ịzọpụta kpo oku oge banyere 50%, ngụkọta ike ego nke 10% - 15%.

(site na: 168 net forgings)