Ibanga:20 Steel
Okujwayelekile:GB / T 699-1999

izici
Ukuqina kuphakeme kancane kunensimbi engu-15, akuvamisile ukucima, akukho qhwa eliqhakazile elibandayo elibandayo elikhungathekile, ukubukeka kwe-arch arC ubulukhuni
Insimbi ingeyakwekhwalithi ephezulu ye-carbon carbon, insimbi yokuqothula ebandayo, i-steelness inamandla aphansi, ubulukhuni obuhle, ukufudumala kanye nokushaywa kwe-weldurall, isilinganiso se-355-500, isilinganiso sama-24%
Ukwenza okujwayelekile kungakhuthaza ukuguquguquka kwensimbi, lungisa i-proeutectoid enkulu ye-block proeutetectoid, futhi uthuthukise ukusebenza kwezikhala ngaphansi kwama-160hbs
Indlela yezobuchwepheshe yeinsimbiIzingxenye zokufa ngukuthi: Ukuphoqelela Ukuphoqelelwa Ukufa Okungenalutho Kwemishini Ukuvusa Imishini Ebandayo Ukubumba Ukubumba Ukubumba Ukubumba kabusha Imishini Emishini Yokuqothula Imishini yokugaya

Ukwakheka kwamakhemikhali
C: 0.17% ~ 0.24%
SI: 0.17% ~ 0.37%
MN: 0.35% ~ 0.65%
S: 0.035%
P: 0.035%
CR: 0.25%
NI: 0.25%
CU: 0.25
impahla yemishini
Amandla we-Tensile B (MPA): ≥410 (42)
Ukukhiqiza amandla s (MPA): ≥245 (25)
I-Elongation 5 (%): ≥25
Ukuncishiswa kwe-area bits (%): 55 noma ngaphezulu
Ubulukhuni: Hhayi Ukushisa Kwelashwa, ≤156HB
Usayizi wesampula: Usayizi wesampula: 25mm

Olunye Ulwazi

Ukucaciswa Kokwelashwa Okushisa: Ukujwayelekile, 910 ℃, ukupholisa komoya.

Isakhiwo seMetallographic: Ferrite + Pearlite.
Ukwelashwa okushisayensimbi 20 futhi ucime kanzima in thren yensimbi cha. 20:
Ukwelashwa kokushisa kwensimbi engama-20: ngensimbi engu-20, kungenzeka ukufeza ubulukhuni obujwayelekile bokucimaka okungu-30-35hrc.nges Ukushisa okushisa kuphezulu, ukuguqulwa okuqediwe kukhulu:
1. Ngemuva kwemishini evuthayo, i-workpiece yacishwayo icinywe yi-Brine yokwelashwa okushisa (920 ℃ yacishwa i-brine), bese icubungula izidingo zobulukhuni ze-30-35hrc, zonke izinqubo kufanele zikwazi ukucubungula, akukho lutho olungaphandle kwendilinga.
2. Imishini efanayo emishini, indawo yangaphakathi ye-hole eqeda noma itafula elicijile kuphela ukhiye (kuya ngosayizi womsebenzi wokusebenza), futhi ekugcineni uqede.
3. Ukuzikhandla nokucisha, ukugaya umgodi wangaphakathi nokhiye.
Ukugeleza kwenqubo kungokwesibili, okwesithathu kanye nokuningi.
● Ukulethwa Kwezwe: Ukulethwa esimweni sokungabikho ukwelashwa okushisa noma ukwelashwa okushisa (okuvuselelayo, okujwayelekile noma okushisa okuphezulu noma ukulethwa esimweni sokwelashwa okushisa kuzokhonjiswa kwinkontileka. Uma kungabonisiwe, ukulethwa kuzokwenziwa ngaphandleukwelashwa okushisa.