1. Cov khoom txhais thiab cov khoom tseem ceeb
Q: Dab tsi yog ovm 519 4118 cov yeeb nkab?
A:
4118 STEEL YEES yog ib qho chromatic chromium-molybdenum alloy steel yeeb nkab (unson g41180) teev nyob rau hauv Astm A519 tus qauv. Nws cov tub ntxhais muaj pes tsawg leeg yog: 0.17% -0.23% carbon, 0.70% -0.90% chromium, thiab 0.08% -0.15% molybdenum. Cov khoom siv no, synergistically ntxiv nrog chromium thiab molybdenum, sib txuas ua ke rau cov khoom siv hluav taws xob zoo tshaj plaws rau cov khoom siv hauv nruab nrab. Nws yog tus cwj pwm los ntawm kev ua tiav cov tawv nqaij tawv ntawm 25mm tus ntoo khaub lig nyob rau hauv cov roj quenching. Tom qab carburizing, nws tuaj yeem ua tiav qhov kev tawv tawv ntawm HRC 58-62 thaum tswj cov tawv zoo hauv cov tub ntxhais (HRC 28-32).
2. Cov Khoom Siv Cov Neeg Kho Tshuab thiab Cov Lus Qhia
Q: Qhov kev ua tau zoo ntawm 4118 steel yeeb nkab? A:
Hauv lub xeev quenched thiab tempered (880℃roj quenching {} Nws cov kev siv rog tsawg (10⁷ mus) yog kwv yees li 50% ntawm kev ua tau zoo, thiab nws lub zog siab tsawg dua li 8% -10% ntawm 250 degree. Tom qab carburizing thiab quenching, nws nto kev sib chwv qaug zog lub neej yog 3-5 zaug ntev dua li cov carbon steel.
3. Raug ntawv thov cov xwm txheej
Q: Cov ntaub ntawv ntawm 4118 steel hlau yog dab tsi?
A:
Kev sib kis tsheb kho tsheb: kis tau tus mob lub zog, cov pob zeb plantary planetary
Kev Siv Machinery: HYDRAULIC TSAV MATORS CAARTS, EXCAVATOR SWWING LUB RING
Cov Khoom Siv Hluav Taws Xob: Cua Turbine Yaw Reducer Zog, Roj Laum Collars
Cheebtsam dav dav: Kev kub zog Bolts, Carburized sib txuas cov pas nrig
4. Kev kho cua sov thiab ua cov ntsiab lus tseem ceeb
Q: Kuv tuaj yeem ua kom zoo dua kev kho cua sov thiab kev ua haujlwm ntawm 4118 cov yeeb nkab steel?
A:
Cov txheej txheem pom zoo yog "qis lub siab carburizing + cov roj siab roj Quenching": carburizing ntawm 930 degree-kub npau npau ntawm 180℃rau 4 teev. Cov txheej txheem no tuaj yeem ua tiav cov ntaub ntawv carburized qhov tob ntawm 0.8-1.2 mm thiab deformation ntawm tsawg dua 0.05%. Cov kev txiav txim siab ua: Vuam yuav tsum tau Er80s-B2 hlau preheated txog 250 degree. Tig tau yuav tsum alcrn-coated cuab yeej (txiav ceev 90-110 m / min). Kev sib tw spheriding (720℃rau 6 teev) yog qhov yuav tsum tau ua ntej kev ua kom txias.
5. Piv nrog cov ntaub ntawv zoo sib xws
Q: Dab tsi yog qhov sib txawv ntawm 4118 thiab 8620 thiab 4320 steel kav?
A:
vs . 8620}: 4118 muaj cov ntsiab lus chromium ntau dua (0.70% - 0.50% vs {% - (0.50 %%% tus nqi siab dua.
VS . 4320}: 4118 muaj tsis muaj npib tsib thiab muaj tsawg dua qis dua hluav taws xob ntawm -20 degree), tab sis kev ua kom cov degrogen hydrogen qeeg
Cov ntawv thov tsis yooj yim: Nws tsis tuaj yeem hloov 9310 rau kev ua kom dav dav ntawm aviation, tsis yog kom nws pom zoo li hloov pauv rau 4340 rau cov kabmob loj, thauj khoom loj, cov kabmob.
