Shandong Weichuan Hlau Khoom Co., Ltd.

42CrMo alloy steel yeeb nkab chaw tsim tshuaj paus kev muag khoom

Lus piav qhia luv luv:

Lub hom phiaj ntawm 42CrMo seamless steel yeeb nkab: cov hlau tshwj xeeb rau choj yog "42CrMo", tshwj xeeb hlau rau tsheb girder yog "42CrMo", thiab cov hlau tshwj xeeb rau lub nkoj siab yog "42CrMo".


Product Detail

Khoom cim npe

Kev piav qhia

Lub hom phiaj ntawm 42CrMo seamless steel yeeb nkab: cov hlau tshwj xeeb rau choj yog "42CrMo", cov hlau tshwj xeeb rau lub tsheb girder yog "42CrMo", thiab cov hlau tshwj xeeb rau lub nkoj siab yog "42CrMo". Cov hlau zoo li no txhim kho cov khoom siv ntawm cov hlau los ntawm kev kho cov ntsiab lus carbon (c). Yog li, raws li cov ntsiab lus carbon, cov hlau no tuaj yeem muab faib ua: cov pa roj carbon tsawg - cov ntsiab lus carbon feem ntau tsawg dua 0.25%, xws li 10 thiab 20 steel; Cov pa roj carbon nruab nrab - cov ntsiab lus carbon feem ntau ntawm 0.25 ~ 0.60%, xws li 35 thiab 45 steel; High carbon steel - cov ntsiab lus carbon feem ntau ntau dua 0.60%. Hom hlau no feem ntau tsis siv rau hauv kev tsim cov kav hlau. 42CrMo steel yog lub zog muaj zog ultra-siab steel nrog lub zog siab thiab tawv, zoo hardenability, tsis pom tseeb tempering brittleness, siab qaug zog txwv thiab ntau yam kev cuam tshuam tom qab quenching thiab tempering kev kho mob, thiab zoo low-temperature cuam tshuam toughness. 42CrMo steel yog tsim rau kev tsim cov yas pwm loj thiab nruab nrab uas xav tau qee lub zog thiab tawv. Hardness: annealed, 147 ~ 241hb, 42CrMo

Mechanical zog ntawm 42CrMo

Tensile zog σ b (MPa): ≥1080 (110)

Yield zog σ s (MPa): ≥930 (95)

Elongation δ 5 (%): ≥12

Txo thaj tsam ψ (%): ≥45

Impact zog Akv (J): ≥ 63

Kev cuam tshuam toughness tus nqi α kv (J / cm2): ≥78(8)

Hardness: ≤ 217hb

Txhawm rau txhim kho lub neej kev pab cuam ntawm cov tuag rau ntau tshaj 800000 zaug, txoj kev hardening ntawm quenching thiab low-temperature tempering tuaj yeem siv rau cov hlau ua ntej. Thaum lub sij hawm quenching, nws yuav tsum tau preheated ntawm 500-600 ℃ rau 2-4 teev, ces khaws cia ntawm 850-880 ℃ rau ib lub sij hawm (tsawg kawg 2 teev), txias hauv roj rau 50-100 ℃ thiab txias los ntawm huab cua. Lub hardness tom qab quenching tuaj yeem ncav cuag 50-52hrc. Txhawm rau tiv thaiv kev tawg, nws yuav tsum tau tempered ntawm 200 ℃ tam sim ntawd. Tom qab tempering, lub hardness tuaj yeem khaws cia siab tshaj 48hrc. Qhov nruab nrab ntsev da dej vanadization txheej txheem ntawm 42CrMo steel. Cov txheej txheem carbide tuaj yeem tau txais los ntawm nruab nrab ntsev da dej vanadization kho ntawm 42CrMo steel.

1. Cov pa roj carbon vanadium compound, carburized txheej muaj cov qauv zoo sib xws, zoo txuas ntxiv thiab compactness, uniform thickness, compact qauv, siab microhardness thiab siab hnav tsis kam, thiab cov tawv tawv, hnav tsis kam thiab adhesion kuj zoo heev.

2.Lub solubility ntawm VC nyob rau hauv austenite yog siab tshaj nyob rau hauv ferrite. Nrog rau qhov txo qis ntawm qhov kub thiab txias, VC precipitates los ntawm ferrite, uas ua rau cov hlau muaj zog thiab cov nplej ua kom zoo dua qub, thiab cov txheej txheem sib xyaw ua kom pom muaj zog dua. 42CrMo steel belongs rau cov pa roj carbon siab thiab siab chromium ledeburite steel, nrog cov ntsiab lus carbide siab, suav txog li 20%, thiab feem ntau faib tsis sib xws hauv txoj siv lossis network, nrog kev sib cais loj. Txawm li cas los xij, kev kho cua sov yog qhov nyuaj rau kev hloov cov carbide segregation, uas cuam tshuam rau cov khoom siv hluav taws xob ntawm cov hlau thiab kev pab cuam lub neej ntawm cov neeg tuag. Cov duab thiab qhov loj ntawm carbides kuj muaj kev cuam tshuam zoo rau cov khoom ntawm cov hlau. Hauv particular, lub kaum ntse ntse loj carbides muaj qhov sib cais zoo ntawm cov hlau matrix thiab feem ntau dhau los ua qhov ua rau qaug zog tawg. Yog li ntawd, nws yog ib qho tsim nyog yuav tau hloov kho cov forging ntawm raw dov steel, tag nrho crushed eutectic carbides kom lawv zoo thiab tusyees faib, thiab cov qauv fiber ntau faib nyob ib ncig ntawm lub kab noj hniav los yog tsis directionally, thiaj li mus txhim kho lub transverse mechanical zog ntawm steel. .

Thaum lub sij hawm forging, lub billet yuav tsum chim siab thiab kos los ntawm ntau cov lus qhia rau ntau zaus, thiab forged los ntawm "ob lub teeb thiab ib tug hnyav", uas yog, lub billet yuav tsum maj mam ntaus thaum pib ntawm forging los tiv thaiv puas. Nws tuaj yeem raug ntaus hnyav ntawm qhov nruab nrab kub ntawm 980 ~ 1020 ℃ kom ntseeg tau tias cov crushing ntawm carbides. 42CrMo steel tsis yog forged, thiab cov khoom siv tshuaj kho ob chav refining yog saws, uas yog, theem ob preheating ntawm li 500 ℃ thiab 800 ℃ thiab cov khoom tov kho ntawm 1100 ~ 1150 ℃, quenching nrog cov roj kub los yog isothermal quenching, kub tempering ntawm 750 ℃, cua sov ntawm 960 ℃ tom qab machining thiab kev kho cua sov zaum kawg tom qab cov roj txias tuaj yeem kho cov carbides, puag ncig thiab cov ces kaum thiab kho cov nplej.


  • Yav dhau los:
  • Tom ntej:

  • Yam khoom