◦ Cov qauv siv: GB / T1222-2007.
◦ Ceev: 7.85 g / cm3.
• Tshuaj muaj pes tsawg leeg
◦ Carbon (C): 0.62% ~ 0.70%, muab lub zog yooj yim thiab hardenability.
◦ Manganese (Mn): 0.90% ~ 1.20%, txhim kho hardenability thiab txhim kho toughness.
◦ Silicon (Si): 0.17% ~ 0.37%, txhim kho kev ua haujlwm thiab ua kom cov nplej zoo dua.
◦ Phosphorus (P): ≤0.035%, sulfur (S) ≤0.035%, nruj me ntsis tswj cov ntsiab lus impurity.
◦ Chromium (Cr): ≤0.25%, npib tsib xee (Ni) ≤0.30%, tooj liab (Cu) ≤0.25%, trace alloying ntsiab, pab txhim kho kev ua haujlwm.
• Mechanical zog
◦ Lub zog siab: Lub zog tensile σb yog 825MPa ~ 925MPa, thiab qee cov ntaub ntawv siab dua 980MPa. Nws muaj peev xwm ua tau zoo heev thiab tsim nyog rau kev ntxhov siab.
◦ Zoo elasticity: Nws muaj qhov siab elastic txwv, tuaj yeem tiv taus qhov elastic deformation loj yam tsis muaj deformation mus tas li, thiab tuaj yeem khaws cia thiab tso tawm lub zog.
◦ High hardness: Tom qab kev kho cua sov, nws tuaj yeem ncav cuag HRC50 lossis siab dua, nrog kev hnav tsis kam, haum rau hnav.
◦ Zoo toughness: Thaum raug cuam tshuam cov loads, nws muaj peev xwm nqus tau ib tug npaum li cas ntawm lub zog yam tsis muaj nkig tawg, uas txhim kho kev ntseeg tau thiab kev pab lub neej nyob rau hauv complex tej yam kev mob.
• Cov yam ntxwv
◦ High hardenability: Manganese ho txhim kho hardenability, haum rau manufacturing springs thiab loj qhov chaw nrog ib txoj kab uas hla ntawm ntau tshaj 20mm.
◦ Tsis tshua muaj siab ntawm decarburization deg: Qhov saum npoo zoo yog ruaj khov thaum kho cua sov, txo qhov kev pheej hmoo ntawm kev ua tsis tiav thaum ntxov.
◦ Overheat rhiab heev thiab tempering brittleness: Lub quenching kub yuav tsum tau nruj me ntsis tswj, thiab nkig kub ntau yam yuav tsum tau zam thaum tempering.
◦ Kev ua haujlwm zoo: tuaj yeem ua rau forged thiab welded, haum rau kev tsim cov khoom zoo li qub, tab sis qhov txias deformation plasticity tsawg.
• Kev kho cua sov specifications
◦ Quenching: quenching kub 830 ℃ ± 20 ℃, roj txias.
◦ Tempering: Tempering kub 540 ℃ ± 50 ℃, ± 30 ℃ thaum xav tau tshwj xeeb.
◦ Normalizing: Kub 810 ± 10 ℃, cua txias.
• thaj chaw thov
◦ Caij nplooj ntoos hlav manufacturing: xws li tsheb nplooj springs, shock absorber springs, valve springs, clutch reeds, thiab lwm yam.
◦ Cov khoom siv tshuab: tuaj yeem siv los tsim cov khoom siv siab, kev sib txhuam siab xws li lub zog, cov kabmob, thiab cov pistons.
◦ Cov cuab yeej txiav thiab stamping tuag: siv nws cov hardness siab thiab hnav tsis kam, nws tuaj yeem siv los tsim cov cuab yeej txiav, stamping tuag, thiab lwm yam.
◦ Cov vaj tse thiab txuas hniav: tuaj yeem siv los tsim cov khoom siv uas txhim kho cov kabmob muaj peev xwm ntawm cov qauv, xws li choj bearings, kev txhawb nqa lub tsev, thiab lwm yam.
Post lub sij hawm: Lub Xya hli ntuj-18-2025