Cold-drawn seamless yeeb nkab yog ib hom steel qauv hauv GB hauv kuv lub tebchaws. 40Cr steel yog ib qho ntawm cov hlau siv dav tshaj plaws hauv kev lag luam machining. Tom qab kev kho cua sov, nws muaj cov khoom zoo ntawm lub cev, zoo heev ultra-low kub tawg toughness thiab tsis tshua muaj qhov sib txawv. 40cr seamless steel yeeb nkab muaj kev ua tau zoo heev, nws tuaj yeem hardened rau Ф28-60 hli thaum dej quenched, thiab tuaj yeem hardened rau Ф15-40 hli thaum roj quenched. Ntxiv nrog rau kev kho cua sov, hom hlau no kuj tsim nyog rau cyanidation thiab induction hardening. Kev ua haujlwm tau zoo. Thaum lub zog yog 174-229HB, tus txheeb ze drilling txheej txheem kev ua tau zoo yog 60 feem pua. Cov hlau no yog tsim los ua cov pwm me me thiab nruab nrab.
40cr seamless steel yeeb nkab muaj pes tsawg leeg
C:{{0}}.37~0.44 Si:0.17~0.37 Mn:{{10}} .50~0.8{{20}} Cr: 0.80~1.10 Ni: Tsawg dua lossis sib npaug 0.30 P: Tsawg dua lossis sib npaug rau 0.035 S: Tsawg dua los yog sib npaug rau 0.035 Cu: Tsawg dua los yog sib npaug rau 0.30
Mo: Tsawg dua lossis sib npaug rau 0.10
Lub cev muaj zog
Specimen blank specification (mm): 25
Tempering kev kho mob:
Thawj qhov kev kho cua sov cua sov (degree): 850; coolant: yog '
Qhov thib ob cua sov kho cua sov kub (degree): -
quenching cua kub (degree): 520; Compressive zog (σb / MPa): Ntau dua los yog sib npaug rau 810 (thaum lub zog tshwj xeeb yog 25HRC) Cov khoom txwv (σs / MPa): Ntau dua lossis sib npaug rau 785 Kev sib tsoo elongation (δ5 / feem pua): Ntau dua lossis sib npaug rau 9 Nqe Shrinkage tus nqi (ψ / feem pua): Ntau dua lossis sib npaug rau 45 Kev cuam tshuam kev zom zaub mov thiab kev nqus dej (Aku2 / J): Ntau dua lossis sib npaug rau 47
Brinell hardness (100/3000HBW) (quenching lossis kub quenching): Tsawg dua lossis sib npaug rau 207
