Kōeke:20 maitai
Paerewa:GB/T 699-1999

āhuatanga
He iti ake te kaha ki runga ake i te 15 rino, he uaua te tinei, kaore he riri maekee te matao deformation plasticity tiketike whānui mo te piko maramataka flanging me te tukatuka hama, pērā i te whao arc fehokotaki'anga me te ātete fehokotaki'anga pai mahi fehokotaki'anga, fehokotaki'anga ka he iti te matotoru, tino ahua ranei te ahua o nga waahanga uaua ka pakaru i runga i te tapahi miihini te ahua o te maeke kua toia, te ahua whakaraerae ranei i te ahua o te reera pai i te nuinga o te waa ki te hanga i te kaha ehara i te mea nui me te tino uaua.
Ko te maitai no te kounga teitei o te waro waro waro pai, te tohanga matao carburized maitai whakapakeke, he iti te kaha o te maitai, he pai te uaua, he kirihou me te weldability, te kaha tensile o 355-500mpa, reeti elongation o 24%
Ka taea e te whakatikatika te whakatairanga i te spheroidization o te maitai, te whakamahine i te poraka nui proeutectoid ferrite, me te whakapai ake i te mahi tapahi o nga waahi iti iho i te 160HBS
Ko te huarahi hangarau o temaitaiKo nga wahanga mate ko: ko te whakarewanga o te whakarewanga o te miihini whakapoipoi mate parakore te miihini taratara te whakakoi i te matao te whakakorikori whakakoi i te miihini whakahiato miihini pai te miihini whakakao tiina te whakakorikori i te miihini whakakorikori hui.

hanganga matū
C: 0.17% ~ 0.24%
Si: 0.17% ~ 0.37%
Mn: 0.35% ~ 0.65%
S: 0.035%
P: 0.035%
Kr: 0.25%
Ni: 0.25%
Cu: 0.25
taonga miihini
Te kaha matara B (MPa) : ≥410(42)
Kaha tuku S (MPa) : ≥245(25)
Whakaroa 5 (%) : ≥25
He whakahekenga o nga paraka horahanga (%) : 55 neke atu ranei
Te pakeke: kaore i te wera, ≤156HB
Rahi tauira: Rahi tauira: 25mm

etahi atu korero

Te whakamaarama maimoatanga wera: te whakarite, 910 ℃, te whakamahana hau.

Hanganga Metallographic: ferrite + pearlite.
Te maimoatanga werao te maitai 20 me te tinei pakeke o te maitai No. 20:
Te maimoatanga wera o te 20 maitai: Mo te 20 maitai, ka taea te whakatutuki i te pakeke o te tineia o te 30-35HRC.Na te mea he teitei ake te wera o te whakamahana, he nui ake te rerekee.Tirohia:
1. I muri i te miihini taratara, ka tineia te katoa o te mahi ma te maimoatanga wera (920 ℃ te tote kua whakakorehia), ka tukatukahia.Na nga whakaritenga pakeke o te 30-35HRC, me kaha nga tukanga katoa ki te tukatuka, kaore he mea pai ake i roto. me waho o te porowhita o te motuka, whakatikahia te ara matua.
2. He rite tonu te mahi machining taratara, te tiini mata o roto o te kohao, te arai tiini tepu anake ranei (i runga i te rahi o te taputapu mahi), ka mutu.
3. Carburizing me te tinei, huri i te poka o roto me te ara matua.
Ko te rere o te tukanga ko te tuarua, tuatoru me te nuinga.
● Te ahua o te tuku: te tuku i roto i te ahua kaore he maimoatanga wera, he maimoatanga wera ranei (te whakapouri, te whakamohoatanga, te wera nui ranei o te wera). Mena kaore i tohuhia, ka tukuna te tuku ki wahomaimoatanga wera.