1, kwindawo eqhelekileyo ye-austenitic isothermal transition diagram, oko kukuthi, malunga ne-500-600 ℃, amanzi akwinqanaba lefilimu yomphunga, kwaye isantya sokupholisa asikhawulezi ngokwaneleyo, esihlala sikhokelela "kwindawo ethambileyo" eyenziwe ngu. Ukupholisa okungalinganiyo kunye nesantya esinganelanga sokupholisa sokwenza. Kwinkqubo yenguqu ye-martensitic, oko kukuthi, malunga ne-300-100 ℃, amanzi akwindawo ebilisayo. nqanaba, isantya sokupholisa sikhawuleza kakhulu, kulula ukwenza isantya senguqu ye-martensitic sikhawuleza kakhulu kwaye sivelise isixa esikhulu soxinzelelo lwangaphakathi, okubangela ukuguqulwa kokubunjwa okanye ukuqhekeka.

I-2, ubushushu bamanzi bunempembelelo enkulu kumthamo wokupholisa, ngoko ke bunovakalelo kutshintsho lobushushu bendawo. Njengoko ubushushu bamanzi bukhula, umthamo wokupholisa uyancipha kakhulu, kwaye uluhlu lobushushu bomgangatho ophezulu wokupholisa lufudukela kwiqondo eliphantsi. kukhokelela ekubunjweni ukuba kungabi lukhuni, kodwa kunempembelelo encinci kwisantya sokupholisa kuluhlu lwenguqu ye-martensite.Xa ubushushu bamanzi buphakanyiswa ukuya ku-60 ℃, ukupholisa ireyithi iya kuhla malunga nama-50%.

3, xa amanzi equlethe igesi eninzi (njengamanzi amatsha), okanye amanzi axutywe nokungcola okunganyibilikiyo, okufana neoli, isepha, udaka, njl.
Ngokweempawu zokupholisa zamanzi, amanzi H angasetyenziselwa ukucima kunye nokupholisa i-carbon steel forgings kunye nobukhulu becandelo elincinci kunye ne-shape.Quenching elula, kufuneka uqaphele: gcina ubushushu bamanzi ngaphantsi kwe-40 ℃, eyona nto ingcono phakathi kwe-15 ukuya kwi-30 ℃ , kwaye ugcine ukujikelezwa kwamanzi okanye ulwelo, ukutshabalalisa inwebu yokubunjwa komphezulu womphunga, unokusebenzisa ujingi wokusebenza ngexesha lokucima (okanye wenze i-workpiece inyuka isihla) indlela. ukuphazamisa inwebu yomphunga, ukwandisa iqondo lokupholisa phakathi kwe-500-650 ℃, iimeko zokupholisa, ukuphepha ukuvelisa indawo ethambileyo.

Ukusuka:168 forgings net