Tempering ke mokhoa oa ho phekola mocheso oo workpiece e timang 'me e futhumetse mocheso o ka tlase ho Ac1 (mocheso oa ho qala oa pearlite ho austenite phetoho nakong ea mocheso), o tšoaroa ka nako e itseng, ebe o pholile mocheso oa kamore.
Ho futhumatsa hangata ho lateloa ke ho tima, ka sepheo sa ho:
(a) Felisa khatello ea kelello e setseng e hlahisoang nakong ea ho tima workpiece ho thibela deformation le cracking;
(b) Fetola ho thatafala, matla, polasetiki le ho tiea ha workpiece ho fihlela litlhoko tsa ts'ebetso bakeng sa tšebeliso;
(c) Tlhophiso e tsitsitseng le boholo, ho netefatsa ho nepahala;
(d) Ntlafatsa le ho ntlafatsa ts'ebetso ea ts'ebetso. Ka hona, ho futhumatsa ke mokhoa oa ho qetela oa bohlokoa oa ho fumana ts'ebetso e hlokahalang ea workpiece. Ka ho kopanya ho tima le ho futhumatsa, lisebelisoa tse hlokahalang tsa mochine li ka fumanoa. [2]
Ho ea ka mefuta e fapaneng ea mocheso, mocheso o ka aroloa ka mocheso o tlase oa mocheso, o itekanetseng oa mocheso o mahareng, le mocheso o phahameng oa mocheso.
Ho hlophisoa ha maemo
Mocheso o fokolang oa mocheso
Ho futhumala ha workpiece ho 150-250 °
Sepheo ke ho boloka boima bo phahameng le ho roala khanyetso ea lisebelisoa tse tingoeng, ho fokotsa khatello ea maikutlo le brittleness nakong ea ho tima.
Tempered martensite e fumanoeng ka mor'a ho halefa e bolela sebopeho se senyenyane se fumanoang nakong ea mocheso o tlase oa martensite e timang. Thepa ea mochini: 58-64HRC, boima bo phahameng le ho hanyetsa ho roala.
Sebaka sa kopo: Haholo-holo e sebelisoa mefuteng e fapaneng ea lisebelisoa tsa tšepe tse phahameng tsa carbon, lisebelisoa tsa ho itšeha, lisebelisoa tsa ho lekanya, hlobo, li-bearings, carburized le likarolo tse timang holim'a metsi, joalo-joalo [1]
Mocheso o mahareng o futhumatsang
Ho futhumala ha workpiece pakeng tsa 350 le 500 ℃.
Sepheo ke ho finyella elasticity e phahameng le ntlha ea lihlahisoa, ka ho tiea ho loketseng. Kamora ho halefa, ho fumanoa troostite e halefileng, e bolelang sebopeho sa duplex sa ferrite matrix se entsoeng nakong ea mocheso oa martensite, moo li-carbide tse chitja tse nyane haholo (kapa cementite's) li ajoang ka har'a matrix.
Thepa ea mochini: 35-50HRC, moeli o phahameng oa elastic, ntlha ea tlhahiso, le boima bo itseng.
Sebaka sa kopo: haholo-holo se sebelisetsoa liliba, liliba, li-dies, lisebelisoa tse amang, joalo-joalo [1]
Mocheso o phahameng oa mocheso
Ho futhumatsa li-workpieces ka holimo ho 500 ~ 650 ℃.
Morero ke ho fumana thepa e felletseng ea mochini ka matla a matle, polasetiki le boima.
Ka mor'a ho halefa, ho fumanoa sorbite e futhumetseng, e bolelang sebopeho sa duplex sa ferrite matrix se entsoeng nakong ea martensite tempering, moo li-carbides tse nyenyane tse chitja (ho kenyeletsoa le cementite) li ajoang ka har'a matrix.
Thepa ea mochini: 25-35HRC, e nang le thepa e ntle e felletseng ea mochini.
Sebaka sa kopo: E sebelisoa haholo bakeng sa likarolo tse fapaneng tsa bohlokoa tse jarang moroalo, joalo ka lithupa tse hokelang, liboutu, likere le likarolo tsa shaft.
Mokhoa o kopantsoeng oa phekolo ea mocheso oa ho tima workpiece le mocheso o phahameng oa mocheso o bitsoa quenching le tempering. Ho tima le ho futhumatsa ho ke ke ha sebelisoa feela bakeng sa phekolo ea ho qetela ea mocheso, empa hape le bakeng sa phekolo ea pele ea mocheso ea likarolo tse ling tse nepahetseng kapa likarolo tse tingoeng tsa induction.
Lengolo-tsoibila:oiltools14@welongpost.com
Mohau Ma
Nako ea poso: Nov-03-2023
