Gulu:20 zitsulo
Zokhazikika:GB/T 699-1999

makhalidwe
Kulimba ndipamwamba pang'ono kuposa 15 zitsulo, kawirikawiri kuzimitsa, palibe kupsa mtima brittleness ozizira mapindikidwe plasticity mkulu general kwa mapindikira calender flanging ndi nyundo processing, monga Chipilala kuwotcherera ndi kukana kuwotcherera ntchito zabwino kuwotcherera, kuwotcherera pamene makulidwe aang'ono, maonekedwe okhwima kapena mawonekedwe a ziwalo zovuta zomwe zimakonda kusweka podula makina omwe amakokedwa kapena kuzizira bwino zomwe zimagwiritsidwa ntchito popanga mphamvu si zazikulu komanso zolimba kwambiri.
Chitsulo ndi apamwamba otsika mpweya mpweya zitsulo, ozizira extrusion carburized kuumitsa zitsulo, zitsulo ali otsika mphamvu, toughness wabwino, plasticity ndi weldability, kumakoka mphamvu ya 355-500mpa, elongation mlingo wa 24%
Normalizing imatha kulimbikitsa spheroidization yachitsulo, kuyeretsa chipika chachikulu cha proeutectoid ferrite, ndikuwongolera magwiridwe antchito osafunikira osakwana 160HBS.
Njira yaukadaulo yaukadaulozitsulokufa mbali ndi: ndi kuponyera forging kufa opanda kanthu annealing makina akhakula Machining ozizira extrusion akamaumba recrystallization annealing makina abwino machining carburizing kuzimitsa kutentha akupera kupukuta msonkhano

mankhwala opangidwa
C: 0.17% ~ 0.24%
Kuchuluka: 0.17% ~ 0.37%
Mwa: 0.35% ~ 0.65%
S: 0.035%
P: 0.035%
Kulemera: 0.25%
Kuchuluka: 0.25%
kukula: 0.25
makina katundu
Kulimba kwamphamvu B (MPa): ≥410(42)
Mphamvu zokolola S (MPa) : ≥245(25)
Elongation 5 (%) : ≥25
Kuchepetsa kwa ma bits (%) : 55 kapena kuposa
Kuuma: osati kutentha, ≤156HB
Kukula kwachitsanzo: Kukula kwachitsanzo: 25mm

zambiri

Kutentha kwamankhwala: normalizing, 910 ℃, kuzirala kwa mpweya.

Mapangidwe a Metallographic: ferrite + pearlite.
Kutentha mankhwalazachitsulo 20 ndi kuzimitsa kuuma kwachitsulo No.20:
Kutentha kwazitsulo 20: Pazitsulo za 20, ndizotheka kukwaniritsa kuuma kwa 30-35HRC.
1. Pambuyo pa makina okhwima, chogwiritsira ntchito chimazimitsidwa chonse ndi chithandizo cha kutentha (920 ℃ quenched brine), ndiyeno kukonzedwa. ndi kunja kwa bwalo lagalimoto, konzani njira.
2. Mofananamo akhakula Machining, mkati dzenje pamwamba quenching kapena tebulo quenching keyway (malingana ndi kukula kwa workpiece), ndipo potsiriza kumaliza.
3. Carburizing ndi kuzimitsa, akupera dzenje lamkati ndi keyway.
Kuthamanga kwa ndondomekoyi ndi yachiwiri, yachitatu komanso yambiri.
● Nthawi yobweretsera: kubereka popanda chithandizo cha kutentha kapena kutentha kwa kutentha (annealing, normalizing kapena high tempering) Kupereka mu chikhalidwe cha kutentha kutentha kudzasonyezedwa mu mgwirizano.Ngati sichinawonetsedwe, kutumiza kudzapangidwa popandakutentha mankhwala.