1. Cov khoom txhais thiab cov khoom tseem ceeb
Q: Dab tsi yog ovm 519 4337 cov yeeb nkab?
A:
4337 cov yeeb nkab steel yog cov npib tsib xee-molybdenum-vanadium alloy steel seamless yeeb (uns g43370) teev nyob rau hauv astm ATTM A519 tus qauv. Nws cov tub ntxhais muaj pes tsawg leeg yog: 0.35% -0.40% cov pa roj carbon, 1.65% npib, 0.20% Molybdenum, thiab 0.05% -0.10% Vanadium. Cov ntaub ntawv no zoo tshaj plaws ntawm ultra-siab lub zog (tensile lub zog loj dua los yog sib sib zog nqus cov pa roj carbon monoxide Nws cov yam ntxwv tshwj xeeb suav nrog kev kho mob ua ntej ntawm ASTM qib kev kho mob (cuam tshuam rau kev ua kom zoo dua qub
2. Cov Khoom Siv Cov Neeg Kho Tshuab thiab Cov Lus Qhia
Q: Cov yam ntxwv kev ua tau zoo ntawm 4337 yeeb nkab steel?
A:
Hauv lub xeev quenched thiab tempered (860℃roj quenching+ 580 deg℃tempering):
Lub zog: Tensile Lub Zog 1100-1300 MPa, Tshaj Tawm Lub Zog 950-1150 MPA
Kev nyuaj: elongation ntau dua los yog sib npaug rau 14%, txo thaj chaw ntau dua los yog sib npaug rau 50j rau ntawm 40j ntawm--60 degree
Cov Khoom Tshwj Xeeb: Cov pob txha xwm tshwj xeeb nyuaj tau ntau dua los yog sib npaug ntawm 120 mpath / ², tig los yog 52% -55% ntawm lub zog tensile.
Tom qab kev kho mob thermomechanical, qaug zog lub neej tuaj yeem nce ntxiv los ntawm 30%, thiab lub zog siab dua (tawm los ntawm 80% ntawm 400 degree).
3. Raug ntawv thov cov xwm txheej
Q: Cov ntaub ntawv thov ntawm 4337 cov yeeb nkab?
A:
Cov Khoom Siv Hluav Taws Xob Cov Khoom Siv Hluav Taws Xob: 10,000-tuj HYDRAULIC XOVXWM PASSE, REAVO BOSCTATOR SHAFTS RAU LUB CAIJ NTUJ
Lub zog hluav taws xob muaj zog: 4-tiam nuclear lub zog tseem ceeb lub kav dej, cov nplhaib txhawb nqa rau lub tshuab nqus dej hauv cov khoom siv fusion
Cov Tub Rog Cov Tub Rog: Cov dav hlau cable
Cov Pwm Tshwj Xeeb: Titanium Alloy OreotMal Forging Tuag, Composite Autoclave Moulds (Pre-Hardened rau HRC 40-44)
4. Cov ntsiab lus tseem ceeb rau kev kho cua sov thiab kev ua
Q: Yuav ua li cas thiaj zoo kho kom sov thiab kev ua haujlwm ntawm 4337 cov yeeb nkab steel?
A:
Cov txheej txheem siab tshaj ntawm "ultrafine grain pretreativing + sub-kub deformation quenching" yuav tsum ua haujlwm:
Cyclic Austenitization (930℃× 1h → Degree × 2H, rov ua dua ob zaug) kom ua tiav Astm Qib 10-12 ultrafine nplej.
Sov rolling hauv thaj av ob-theem (780 degree) mus rau 30% -40% deform raws nraim los ntawm cov roj ua kom ncaj nraim.
Ntau qhov tempering (350℃× 2h → 550℃× 4h → 620℃× 2h).
Cov chaw txwv tsis pub muaj:
Vuam yuav tsum tau ernicrmo-3 vuam hlau thiab preheating rau 350 degree.
Tig tau yog txwv rau sialon cov cuab yeej ceramic (txiav ceev 50-70m / min).
Kub Forging Qhov Kub Ntxhiv Yuav Tsum Tau Ua nruj me ntsis hauv 1150-900 Qib Siab Ntauwd.
5. Piv nrog cov ntaub ntawv zoo sib xws
Q: Dab tsi yog qhov sib txawv ntawm 4337, 4340, thiab 300M steel yeeb nkab? A:
vs {. 4340}: 4337 Ntxiv rau cov ntsiab lus vagadium thiab nce qib 40% kev txhim kho hauv 40% nce ntxiv kom muaj zog kub.
vs {. 300 m: 4337 muaj cov ntsiab lus silicon (tsawg dua lossis sib npaug
Cov cai hlau ntawm cov tsis-hloov chaw:
▶ nruj dua los ntawm kev hloov inconel 718 hauv kev ua kom thaj chaw thaj chaw saum toj no 650 degree.
▶ Txwv tsis pub hloov cov nyiaj phev ntawm kev hloov ANCET 100 HAUV LUB NPE-BORDERATE cov khoom siv ntawm cov chaw muaj pob zeb av uas tsaws iav.
