1. Dab tsi yog astm A519 MT1010 yeeb nkab hlau?
Teb: ASTM A519 yog tus qauv tsim los ntawm Asmeskas haiv neeg rau kev sim thiab cov ntaub ntawv (Astm) rau seamless carbon ua ke tubing. MT1010 yog ib qho ntawm cov qib, sawv cev rau cov roj carbon alroupbon hlau. Nws muab lub zog siab (tensile muaj zog kwv yees li 965 mpa) thiab zoo machinisity, ua rau nws feem ntau siv nyob rau hauv cov khoom siv kho tshuab zoo li hydraulic thiab tes.
2. Dab tsi yog cov tshuaj lom neeg muaj pes tsawg leeg rau cov yeeb nkab steel? A: Cov tshuaj lom neeg muaj pes tsawg leeg (phaus feem pua) ntawm MT1010 yog raws li hauv qab no:
Cov pa roj carbon (c): 0.08% -0.13%
Manganese (MN): 0.30% -0.60%
Phosphorus (p) tsawg dua lossis sib npaug rau 0.035%, leej faj (s) tsawg dua los yog sib npaug rau 0.040%
Chromium (CR): 0.80% -1.10%
Molybdenum (MO): 0.15% -0.25%
NCO TSEG: Cov kev txwv tshwj xeeb yog cov ntsiab lus tshaj tawm ntawm ASTM A519. Qeb cov nqi ntawm lwm cov khoom siv qub yuav nyob.
3. Dab tsi yog nws cov khoom siv neeg?
A: Cov khoom tseem ceeb xws li muaj:
Tensile lub zog: ntau dua los yog sib npaug rau 965 mpa
Paib muaj zog: ntau dua los yog sib npaug rau 865 mpa mpa mpa
Elongation: ntau dua los yog sib npaug rau 12% (gauge ntev 50mm)
Hardness: kwv yees li HRC 28-32 (xav tau kev kho kom sov).
Cov Lus Qhia Thov: Haum rau cov ntawv thov kom muaj lub zog siab thiab coj kev siv tshuab hluav taws xob, xws li cov kav dej tsis sib xws (xws li cov kav dej txawv txawv (xws li lwm cov kav dej dub (xws li lwm cov kav dej txawv (xws li cov kav dej tshiab 4140)?
Kev sib piv Kev sib piv: MT1010 muaj cov cim sib xyaw zoo sib xws rau AISI 4140, tab sis nrog me ntsis qis dua cov ntsiab lus chromium thiab molybdenum cov ntsiab lus, ua rau tus nqi qis.
Kev Ua Ntej Txawv: 4140 muaj lub zog siab dua tom qab quenching thiab tempering (tensile muaj zog tshaj 1000 mt1010 tsom mus rau ntawm cov khoom txias.
Cov qauv sib txawv: AISI 4140 yog tus qauv sae, thaum Astm A519 MT1010 yog tus qauv mob siab rau cov kav hlau.
5. Qhov kev pom zoo kom sov cov txheej txheem rau cov yeeb nkab steel no?
A: Cov qauv kev kho cua sov muaj xws li:
Li cas los xij: txhim kho microstructure kev sib xws, ua tiav lub hardness ntawm kwv yees li ntawm HRC 22-26.
Quenching + Templing: Cov txheej txheem pom zoo yog 850℃roj quenching ua raws li 540℃templeing, uas ua tiav lub zog zoo-kev sib xyaw ua ke-kev sib xyaw ua ke.
Annaling: txo kev nyuaj rau machining (hardness tsawg dua los yog sib luag rau HB 200)
