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 n'ime usoro kpo oku, iji mechaa nucleation na uto nke ọka austenitic, mgbasa nke cementite residual na homogenization nke austenitic.The ugbu quenching na kpo oku technology nke forgings na-emepụta n'okpuru nduzi nke a tiori. E jiri ya tụnyere nke ugbu a quenching usoro, "efu okpomọkụ ichekwa" quenching na-azọpụta oge nke okpomọkụ ichekwa 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 abụghị ihe karịrị 100mm, kpo oku na ikuku ọkụ, okpomọkụ nke elu na isi na-fọrọ nke nta ka erute n'otu oge ahụ, ya mere, ya edo oge nwere ike ileghara anya, ma e jiri ya tụnyere omenala mmepụta usoro (r = aD) na nnukwu kpo oku ọnụọgụ, nwere ike ịbụ. belatara ihe fọrọ nke nta ka ọ bụrụ 20% -25% na-emenyụ oge kpo oku.

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 "zero mkpuchi" kpo oku karịa omenala kpo oku nwere ike ịzọpụta oge kpo oku nke banyere 50%, ngụkọta ike ego nke 10% -15%, melite arụmọrụ nke 20% -30%, n'otu oge ahụ "efu mkpuchi" quenching usoro. na-enyere aka nụchaa ọka, mee ka ike dịkwuo mma.

(Site na: 168 net forgings)