Kutentha kochepacarbon steel pipendi mpweya structural zitsulo, otsika kutentha mpweya zitsulo chitoliro ntchito mu chikhalidwe otsika kutentha, amene angathe kupirira ena otsika kutentha zimakhudza, makina ntchito bwino, ndipo mtengo ndi otsika, gwero lonse, choncho ankagwiritsa ntchito.Kufooka kwake kwakukulu ndi kuuma kocheperako, kukula kwa gawo ku Japan zofunikira za workpiece siziyenera kugwiritsidwa ntchito.
Low kutentha mpweya zitsulo chitoliro quenching kutentha mu A3 + (30 ~ 50) ℃, mu kuchita, nthawi zambiri anapereka malire chapamwamba.Kutentha kwakukulu kozimitsa kutentha kwa chitoliro kumatha kupanga liwiro lotsika, kuchepetsa makutidwe ndi okosijeni pamwamba, ndikuwongolera magwiridwe antchito.The workpiece ndi yunifolomu austenite, adzafunika okwanira kugwira nthawi.Ngati ng'anjo yeniyeni yoyikapo, iyenera kukhala yoyenera kuwonjezera nthawi yogwira.Apo ayi, pangakhale kuuma kosakwanira chifukwa cha kutentha kosiyana komwe kumachitika chifukwa cha chodabwitsacho.Komabe, nthawi yogwira ndi yayitali kwambiri, idzawonekanso mbewu zowoneka bwino, oxidation ndi decarbonization zovuta zomwe zimakhudza kuzima.Tikukhulupirira kuti ngati anaika ng'anjo ndi wamkulu kuposa ndondomeko zikalata, Kutentha akugwira nthawi anawonjezera 1/5.Otsika kutentha mpweya zitsulo chitoliro chifukwa otsika hardability, ayenera kutengera lalikulu kuzirala mlingo 10% mchere.Workpiece m'madzi, ayenera kuumitsa, koma osati ozizira, ngati 45 # mwatsatanetsatane zitsulo chilled mu brine, n`zotheka akulimbana workpiece, ndi chifukwa pamene workpiece utakhazikika pafupifupi 180 ℃, ndi austenite mofulumira n'kusanduka kavalo s thupi. minofu chifukwa cha kupsyinjika kwakukulu.Choncho, pamene chitsulo chozimitsira ndi kutentha chikazizira mofulumira mpaka kutentha kumeneku, njirayo iyenera kutengedwa kuti muchepetse kuzizira.Monga momwe kutentha kwamadzi kumakhala kovuta kumvetsetsa, kuyankhapo pakugwira ntchito, madzi akasiya kuyika zinthu zakale, mutha kuthirira utakhazikika (mwachitsanzo, choziziritsa mafuta chingakhale bwino).Komanso, workpiece m'madzi, zoyenera kuchita ayenera kukhala mogwirizana ndi geometry ya workpiece, monga thupi wokhazikika.Sing'anga yozizira komanso yoyima, zomwe zimapangitsa kulimba kosafanana, kupsinjika kosafanana ndikusiya kupunduka kwakukulu kwa chogwiriracho, ngakhale kusweka.
Otsika kutentha mpweya zitsulo chitoliro membala kuzimitsa kuuma pambuyo kuzimitsa ayenera kufika HRC56 ~ 59, kuthekera lalikulu mtanda gawo m'munsi, koma osachepera HRC48, apo ayi, izo zikusonyeza workpiece sanaumitsidwe kwathunthu, bungwe akhoza kukhala ferrite kapena sorbite. minofu, mabungwe oterowo ndi kutentha, amasungidwabe mu masanjidwewo, omwe sanazimitsidwe zolinga.Low mpweya zitsulo chitoliro kutentha pambuyo kuzimitsa, kutentha Kutentha nthawi zambiri 560 ~ 600 ℃, kuuma ndi HRC22 ~ 34. Chifukwa cholinga ndi kuzimitsidwa mawotchi katundu, kotero ndi osiyanasiyana kuuma.Koma kujambula zofunika kuuma, m`pofunika kusintha tempering kutentha malinga ndi zojambula kuonetsetsa kuuma.Monga zitsulo zina zozizira zachitsulo zimafuna mphamvu zambiri, kuuma kumakhala kwakukulu;pamene ena zida keyway kutsinde mbali, chifukwa ngakhale mphero kuzimitsidwa, amaika processing, kuuma zofunika m'munsi.About Tempering nthawi, malinga ndi kuuma ndi kukula kwa workpiece, timakhulupirira, zimadalira kuuma pambuyo tempering kutentha ndi tempering nthawi pang'ono, koma ayenera kubwezedwa kudzera ambiri nthawizonse ntchito Tempering Time ola limodzi kapena kuposa.