JIS G3445 yog cov kev qhia txuj ci rau cov pa roj hmab rau cov khoom siv tshuab rau tshuab cov qauv siv tsis pub dhau tus qauv Japanese. Nws cov ntsiab lus txhais thiab cov ntsiab lus thov yog raws li hauv qab no:
Cov Qauv Cov Khoom thiab Cov Qauv Ntawm Daim Ntawv Thov
Txheem Npe: Cov leeg roj carbon monoxes rau tshuab cov hom phiaj.
Version: 2010 tsab (JIS G3445: 2010), superseding 2006 tsab thiab ua ntej.
Cov Kev Siv: Siv lub tshuab siv tsheb, cov kauj vab tsheb kauj vab, cov khoom siv rooj tog, cov khoom siv dav dav, thiab lwm yam siab mecha tshuab cov qauv.
Tsis suav nrog: Siab {- Thiab qis {{- kev thauj khoom siab (rau cov kev xav tau, xa mus rau JIS G3454 lossis JIS G3462).
Cov Khoom Siv Cov Qib thiab Cov Khoom Siv
1. Qib Cov Txheej Txheem
Muab faib ua plaub tus tsiaj ntawv loj, daim ntawv qhia tau qhia tias lub xeev kho cua sov:
Stkm11a: Qhov pib qis-} cov hlau carbon, anealed.
Stkm12 (A / B / c): Nruab nrab- lub zog, suav nrog txias - ua haujlwm thiab ua haujlwm tiav.
Stkm13 (A / B / c): Nruab nrab - {{2} Lub zog siab, txhim kho nrog manganese cov ntsiab lus.
Stkm14 (A / B / c): High - lub zog qib, nrog lub zog tensile nce mus txog 550 MPa.
2. Cov ntsiab lus tseem ceeb
| Teem nqi | Lub zog tensile(MPa) | Yield zog (mpa) | Elongation (%) | Nta |
|---|---|---|---|---|
| Stkm11a | Ntau dua los yog sib npaug rau 295 | - | Ntau dua los yog sib npaug rau 35 | Kev sib luag siab, yooj yim rau daim ntawv |
| Stkm12c | Ntau dua los yog sib npaug rau 470 | Ntau dua los yog sib npaug rau 355 | Ntau dua los yog sib npaug rau 20 | Txias Drawn, Nruab Nrab Nruab Nrab Nruab Nrab |
| Stkm13c | Ntau dua los yog sib npaug rau 510 | Ntau dua los yog sib npaug rau 380 | Ntau dua los yog sib npaug rau 15 | Tsim Kho Kom Zoo |
| Stkm14C | Ntau dua los yog sib npaug rau 550 | Ntau dua los yog sib npaug rau 410 | Ntau dua los yog sib npaug rau 15 | High - thauj - cov kabmob qauv txheej txheem |
3. Tshuaj lom neeg cov khoom siv
Cov qauv siv carbon tsawg: carbon (c) tsawg dua lossis sib npaug nrog 0.30%, phosphorus (s) tsawg dua lossis sib npaug rau 0.040%.
Manganese cov ntsiab lus Gradient: Los ntawm tsawg dua lossis sib npaug rau 0.60% rau STKM11A rau 0.30-1.00% (rau kev txhim kho lub zog) rau Stkm14C.
️ Kev Tsim thiab Tshuaj Xyuas Kev Ntsuam Xyuas
Cov txheej txheem hom: Kub Rolling (HR), txias kos duab (CW), annealing (a), thiab kev ntxhov siab (sr).
Yuav tsum tau kuaj sim: Hydrostatic kuaj lossis tsis nco qab kev sim siab (Eddy tam sim no / Ultrasonic).
Qhov seem tsis zoo ua rau JIS General Cov Khoom Siv Hluav Taws Xob Cov Yeeb Nkab.