Dab tsi yog cov khoom ntawm Astm A672 D80 cov yeeb nkab
Cov ntaub ntawv piav qhia ntawm A672 D80
A672 D80 tau cais ua ib qho hluav taws xob hluav taws xob welded (EFW) cov yeeb nkab cov khoom hauv Astm A672 / A672M cov qauv nrog cov yam ntxwv hauv qab no:
1. Cov ntaub ntawv hauv kev faib tawm
Cov khoom siv hauv paus: Carbon Steel lossis cov hlau me alloy, cov khoom muaj pes tsawg leeg raug hloov kho raws li tus qauv qib.
Tus Qauv Qeb: D80 qhia tau lub tensile lub zog qib ntawm cov khoom (kwv yees li 8050 MPa) thiab cov cua sov kho mob.
2. Tshuaj lom neeg sib xyaw
Qib zoo sib xws B60 (sib raug rau SA516 GR.60) yog siv los ua kev siv:
Cov pa roj carbon (c): tsawg dua lossis sib npaug rau 0. 30%
Manganese (mn): tsawg dua lossis sib npaug nrog 1.60 feem pua
Silicon (Si): {{0}}}}. 15% ~ 0.40%
Phosphorus (p), leej faj (s): tsawg dua lossis sib npaug rau 0. 035%
3. Cov Khoom Siv Kho Tshuab
Lub zog tensile: ntau dua los yog sib npaug rau 550 MPa (D80 sib piv rau 80 ksi).
Tos lub zog: ntau dua lossis sib npaug rau 415 MPa (xa mus rau B70 qib).
Elongation: ntau dua los yog sib npaug rau 18% (tuab cuam tshuam).
4. Daim Ntawv Thov Kev Sau Npe
Siv hauv nruab nrab thiab kub (-30 degree ~ {{}} Kev Mob Siab Nplooj Ntawv thiab Roj Kho thiab siv tshuaj lom neeg.
Cov txheej txheem raug: ElectroCusion vuam, nrog ntsuas hluav taws xob lossis ultrasonic kuaj kom ntseeg tau qhov zoo ntawm Weld.
Lub ntsiab
A672 D80 yog lub siab-zog carbon hlau / Tsawg-Alloy Steel Electrers zoo ib yam li B70 thiab C60, tab sis muaj lub zog siab dua.
