Tlhaloso
Thephekolo ea mochesots'ebetso ea tšepe e bua ka mekhahlelo e khethehileng ea ho futhumatsa, ho pata le ho pholisa ea tšepe nakong ea phekolo ea mocheso, e entsoeng ho latela molao oa phetoho ea sebopeho sa tšepe nakong ea ho futhumatsa le ho pholile.
Karolelano
Ho latela mekhoa ea ho futhumatsa le ho pholisa le meaho le thepa e fapaneng e fumanoeng, ts'ebetso ea kalafo ea mocheso ea tšepe e ka aroloa ka:
(1) Phekolo e tloaelehileng ea mocheso (ho kopanya, ho tloaeleha, ho tima le ho futhumatsa)
(2) Phekolo ea mocheso o holim'a metsi (ho tima sefahleho le kalafo ea mocheso oa lik'hemik'hale, jj.)
(3) Kalafo e khethehileng ea mocheso (phekolo ea mocheso oa deformation, phekolo ea mocheso oa magnetic field, joalo-joalo).
Ho ea ka boemo le karolo ea phekolo ea mocheso tsamaisong ea tlhahiso ea likarolo, phekolo ea mocheso e ka aroloa ka:
(1) Phekolo ea pele ea mocheso, haholo-holo annealing, normalizing, joalo-joalo.
(2) Phekolo ea ho qetela ea mocheso, haholo-holo ho tima, ho futhumatsa, joalo-joalo.
Annealing le normalizing ea tšepe
Annealing
Ts'ebetso ea kalafo ea mocheso ea ho futhumatsa tšepe e nang le sebopeho se khelohang boemo ba tekano ho ea mocheso o nepahetseng,
ho e sireletsa ka nako e itseng, ebe butle-butle ho e pholisa ho fumana sebopeho se haufi le boemo ba tekano ho bitsoa annealing.
Morero
Felisa likristale tse mahoashe le likristale tse equiaxed, hloekisa lithollo, fokotsa ho thatafala, ntlafatsa ts'ebetso ea ho itšeha, 'me u etse hore sebopeho se ts'oane.
Karolelano
Ho na le mefuta e mengata ea ts'ebetso ea tšepe ea tšepe, e ka aroloa ka mekhahlelo e 'meli ho latela mocheso oa mocheso:
1. Phase transformation recrystallization annealing, ho kenyelletsa le annealing e felletseng, annealing e sa phethahalang,
spheroidizing annealing le diffusion anneal.
2. Annealing ka tlaase ho mocheso oa bohlokoa, ho akarelletsa le recrystallization annealing le khatello ea maikutlo annealing.
Ho tloaeleha ho ka nkoa e le mokhoa o khethehileng oa ho pholile, 'me mokhoa oa ho pholisa ke ho pholisa moea.
1 Ts'ebetso e felletseng
Annealing e felletseng ke ts'ebetso ea kalafo ea mocheso e futhumatsang tšepe ho 30-50 ℃ kaholimo ho mocheso oa Ac3, e boloka mocheso ka nako e lekaneng, e etsa hore sebopeho se tiisehe ka botlalo, ebe se se pholisa butle ka sebōpi ho fumana ts'ebetso ea kalafo ea mocheso haufi le sebopeho sa tekano.
Sepheo ke ho hloekisa lijo-thollo, ho etsa sebopeho sa sebopeho, ho felisa khatello ea kelello ea ka hare le liphoso tse chesang tsa ho sebetsa, ho fokotsa boima, le ho ntlafatsa ts'ebetso ea ho itšeha le ts'ebetso e batang ea polasetiki ea deformation.
Sebopeho se etsoa ka recrystallization, se etsa hore lijo-thollo li hloekisitsoe, seaparo sa sebopeho, 'me sebopeho sa Widmanstätten le sebopeho sa lihlopha se felisoe. Bakeng sa li-forging le likarolo tse rollang, ho hlophisoa ka botlalo ka mor'a hore sesebelisoa sa mosebetsi se chese se chesehe 'me se chese, le pele se seha: bakeng sa likarolo tse cheselitsoeng kapa li-castings, hangata li hlophisoa ka mor'a ho tjheseletsa le ho tšela (kapa ka mor'a hore ho tšeloe annealing).
Mocheso oa ho futhumatsa le nako Mocheso ka kakaretso ke 20-30℃ ka holimo ho Ac3. Nako ea ho tšoara annealing ha e itšetlehe feela ka nako e hlokahalang bakeng sa mosebetsi oa ho chesa (ke hore, mokokotlo oa workpiece o fihla mocheso o hlokahalang), empa hape le nako e hlokahalang bakeng sa phetoho ea sebopeho. Nako e feletseng ea ho tšoara annealing e amana le lik'hemik'hale tsa tšepe, sebōpeho le boholo ba mosebetsi oa ho sebetsa, mofuta oa thepa ea ho futhumatsa, palo ea ho kenya sebōpi le mokhoa oa ho laela. Hangata nako ea ho futhumatsa e baloa ho latela boima bo sebetsang ba workpiece.
Mokhoa oa ho pholisa Ho pholisa sebōpi,lihlahisoa tsa tšepe tsa carbon<200 ℃/h, tlaselisebelisoa tsa tšepe tsa motsoako<100 ℃/h, tšepe e phahameng ea alloy <50 ℃/h. Mocheso oa sebōpi <600 ℃.
Mokhatlo:Lamellar pearlite
Anealing process of carbon steel castings le hardness ka mor'a hore annealing
Khabone (%) | Anealing Mocheso | poloko ea mocheso | Mokhoa oa ho Pholisa | Ho thatafala(HB) | |
Botenya ba lebota ba li-castings / mm | nako / hora | ||||
0.10-0.20 | 910-880 | <30 | 1 | sebōpi se bata ho fihlela ho 620 ℃——e pholile moeeng | 115-143 |
0.20-0.30 | 880-850 | <30 | 1 | sebōpi se bata ho fihla ho 620 ℃——e pholile moeeng | 133-156 |
0.30-0,40 | 850-820 | >30 | Keketseho e 'ngoe le e' ngoe ea 30 mm, eketsa hora e le 'ngoe | sebōpi se bata ho fihla ho 620 ℃——e pholile moeeng | 143-178 |
0.40-0,50 | 820-800 | >30 | Keketseho e 'ngoe le e' ngoe ea 30 mm, eketsa hora e le 'ngoe | sebōpi se bata ho fihla ho 620 ℃——e pholile moeeng | 156-217 |
0.50-0,60 | 800-780 | >30 | Keketseho e 'ngoe le e' ngoe ea 30 mm, eketsa hora e le 'ngoe | sebōpi se bata ho fihla ho 620 ℃——e pholile moeeng | 187-230 |
Nako ea poso: Dec-13-2024