1. Q: EN10297-1 36CrNiMo4 steel raj yog dab tsi, thiab qhov twg nws feem ntau siv?
A:
Lus txhais:Seamless precision steel raj raws li EN10297-1 tus qauv, ua los ntawm36 CrNiMo4(ib siab- zog, qis- alloy chromium-nickel- molybdenum steel).
Cov ntawv thov tseem ceeb:
Automotive Cheebtsam (piv txwv li, tsav ncej, iav).
Aerospace tsaws iav thiab hydraulic systems.
Heavy machinery (piv txwv li, crankshafts, siab- kev nyuaj siab bearings).
Qhov zoo:Zoo heev toughness, qaug zog kuj, thiab hardenability (txog HRC 55 tom qab quenching thiab tempering).
2. Q: Dab tsi yog cov khoom siv kho tshuab ntawm 36CrNiMo4 raj rau EN10297-1?
A:
Tensile zog:900-1100 MPa (nws txawv nrog kev kho cua sov).
Yield zog:Ntau dua lossis sib npaug li 650 MPa.
Elongation:Ntau dua lossis sib npaug li 12% (kom paub meej ductility).
Impact Toughness:Ntau dua lossis sib npaug li 40 J ntawm -20℃(tseem ceeb rau cov ntawv thov kub tsawg).
Hardness:270–320 HB (zoo li -txoj kev xa tuaj).
3. Q: Kev kho cua sov li cas rau 36CrNiMo4 raj, thiab yog vim li cas?
A:
Txheej txheem:
Quenching:Kub rau 850-880 degree, ces roj / dej quenched rau martensitic qauv.
Tempering:550-650℃kom sib npaug zog thiab toughness.
Lub hom phiaj:Txhim kho lub zog tseem ceeb thaum tswj qhov tawv tawv; txo cov kev ntxhov siab seem.
Ncej -Txoj Kev Kho Mob:Ua tiavHRC 50–55rau hnav- qhov chaw tiv taus.
4. Q: Dab tsi yog qhov tseem ceeb ntawm cov tshuaj muaj pes tsawg leeg rau 36CrNiMo4?
A:
Cov ntsiab lus (wt.%):
C:0.32-0.40% (siab carbon rau hardness).
Cr:0.90-1.20% (corrosion / oxidation tsis kam).
Ni:0.90-1.20% (tuaj yeem nyob rau hauv qis temps).
Mo:0.15-0.30% (tiv thaiv temper brittleness).
Si/Mn/P/S:Tswj kom tsawg dua lossis sib npaug li 0.40% / 0.60% / 0.025% / 0.035% (tsawg impurities).
5. Q: Yuav tsum kuaj thiab ntawv pov thawj dab tsi rau EN10297-1 36CrNiMo4 raj?
A:
Yuav tsum xeem:
Tsis yog -kev kuaj kev puas tsuaj (NDT):Ultrasonic (ASTM A388) lossis eddy tam sim no (EN10246-3) rau qhov tsis xws luag.
Mechanical Tests:TS EN ISO 6892-1 thiab EN 10045-1: Tensile, cuam tshuam, hardness
Metallography:Grain loj tsom xam (ASTM E112).
Cov ntawv pov thawj:Mill Test Certificate (EN 10204 3.1), ISO 9001/14001, thiab kev lag luam- kev pom zoo tshwj xeeb (xws li, tsheb IATF 16949).
