Dab tsi yog 440C stainless hlau
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Dab tsi yog 440C stainless hlau
Qib 440C stainless hlau yog cov pa roj carbon siab uas, tom qab kev kho cua sov, tuaj yeem ua tiav qhov siab tshaj plaws, hnav tsis kam thiab lub zog ntawm txhua qib stainless hlau. Cov yam ntxwv no ua rau qib tsim nyog rau kev siv xws li lub rooj sib txoos valve thiab pob bearings. Ntawm qhov tod tes, qib 440A thiab 440B stainless hlau muaj cov khoom zoo sib xws - tshwj tsis yog tias feem pua ntawm cov pa roj carbon monoxide hauv qib 440A qis dua me ntsis.
Tag nrho peb hom ntawm 440 steel feem ntau yog siv. Txawm li cas los xij, qib 440C yooj yim dua kom tau txais ntau dua li lwm qib. Qib 440F yog ib qho yooj yim rau txheej txheem ntawm Qib 440 series thiab tseem muaj cov ntsiab lus zoo sib xws li qib 440C. Martensitic steel yog cov hlau hardness siab uas feem ntau yog tsim los ntawm cov txheej txheem uas yuav tsum tau quenching thiab tempering kho.
Cov qib no muaj kev tiv thaiv corrosion tsawg dua li lwm cov qib austenitic. Daim ntawv thov ntawm martensitic steel yog txwv los ntawm kev poob ntawm lub zog vim yog tempering ntau dhau ntawm qhov kub thiab txias thiab poob ntawm ductility ntawm kub hauv qab xoom.
Tshuaj muaj pes tsawg leeg:
Cov pa roj carbon: 0.95 ~ 1.20
Silicon: Tsawg dua lossis sib npaug rau 1.00
Manganese: Tsawg dua lossis sib npaug rau 1.00
S: Tsawg dua lossis sib npaug rau 0.030
Phosphorus: Tsawg dua lossis sib npaug rau 0.035
Chrome: 16.00 ~ 18.00
Nickel: Tsawg dua lossis sib npaug rau 0.60
Mechanical zog:
Internal kev nyuaj siab (250 N / mm2)
Tensile zog (560 N / mm2)
EL(18%) HB(250)
Hardness: Annealed, Tsawg dua los yog sib npaug rau 269HB;
Tempered, Ntau dua lossis sib npaug rau 58HRC
Kev kho cua sov txheej txheem:
Annealing, 800 ~ 920 degree qeeb txias;
quenching, 1010 ~ 1070 degree roj txias;
Tempering, 100 ~ 180 degree ceev txias.
Preheating kub, 649 degree -816 degree .
Daim ntawv thov:
Nws yog tsuas yog siv los tsim cov kabmob uas ua haujlwm nyob rau hauv ib puag ncig corrosive thiab muaj zog oxidizing huab cua yam tsis muaj lubrication. 440 muaj qhov zoo ntawm qhov ruaj khov ntawm qhov kub thiab txias, yog li nws tuaj yeem siv los ua corrosion resistant siab kub bearing steel. Tsis tas li ntawd, nws tseem tuaj yeem siv los tsim cov cuab yeej txiav zoo, xws li kev kho mob scalpels, txiab, nozzles, bearings, thiab lwm yam. 440F: Nws yog qib steel uas txhim kho qhov kev txiav dawb ntawm 440C steel. Nws yog siv rau cov tshuab dhos tsis siv neeg thiab cov hlau zoo tib yam. Nws muaj cov yam ntxwv ntawm quenching thiab hardening. Yog li ntawd, ntau yam khoom siv sib txawv tuaj yeem tau txais los ntawm kev xaiv cov qib thiab kev kho cua sov. Lub 440C muaj peev xwm tsis tshua muaj peev xwm tiv taus dynamic loads.
