20NiCrMo2-2 alloy steel yog cov pa roj carbon tsawg-nickel chromium molybdenum alloy hlau. Nws yog tus nqi qis hlau nrog kev ua haujlwm zoo carburizing.
Cov ntsiab lus npib tsib xee ntawm 20NiCrMo2-2 steel tsuas yog ib nrab, thiab ib qho me me ntawm molybdenum keeb tau ntxiv. DIN1.6523 steel kuj nce cov ntsiab lus ntawm manganese, yog li nws muaj zog hardenability thiab zog dua 18NiCr5-4.
20NiCrMo2-2 yog haum rau qhov chaw uas yuav tsum tau zoo toughness thiab hnav tsis kam
20NiCrMo2-2 round steel muaj siab hardenability, tsis muaj temper brittleness, weldability zoo, thiab me ntsis nyiam ua rau txias tawg. Nws muaj zoo machinability thiab txias strain plasticity. Feem ntau siv nyob rau hauv quenched thiab tempered los yog carburized quenching xeev Vim yog qhov tsim nyog nce hauv Mn cov ntsiab lus, lub hardenability ntawm cov hlau no tseem zoo heev thiab nws lub zog yog siab dua li ntawm 20CrNi hlau. Feem ntau siv rau kev tsim cov iav hauv cov cav thiab cov tshuab kis ntawm cov tsheb me thiab nruab nrab thiab cov tsheb laij teb; Manufacturing carburized thiab cyanided qhov chaw nrog high core kev ua tau zoo, xws li cov hniav thiab lub cev ntawm lub khob hliav qab xyaum siv nyob rau hauv roj av drilling thiab metallurgical qhib-qhov mines. 20NiCrMo2-2 tsis yog tsuas yog muaj cov khoom zoo xwb tab sis kuj tuaj yeem tiv taus qee qhov kub vim nws cov ntsiab lus molybdenum. Forgings rau kev sib txuas pas nrig thiab valve seem ntawm sab hauv combustion xyaw nrog iav rotors siv rau kev tsim chav turbines.
Cov tshuaj muaj pes tsawg leeg ntawm 20NiCrMo2-2 yog raws li nram no:
Cov pa roj carbon C: 0 17-0.23
Silicon Si: Tsawg dua lossis sib npaug rau 0.040
Manganese Mn: 0 65-0.85
Sulfur S: Tsawg dua lossis sib npaug rau 0.025
Phosphorus P: Tsawg dua lossis sib npaug rau 0.035
Chromium Cr: 0 35-0.70
Nickel Ni: {{0}}.40 ~ 0.70
Molybdenum Mo: {{0}}.15 ~ 0.25
20NiCrMo2-2 Mechanical Property Range Values:
yield zog σ s (MPa): Ntau dua lossis sib npaug rau 590
tensile zog σ b (MPa): Ntau dua los yog sib npaug rau 1100
elongation δ 5 (%): Ntau dua lossis sib npaug rau 9
Qhov txo qis ntawm cheeb tsam ψ (%) : Ntau dua lossis sib npaug rau 40
Lub zog cuam tshuam Akv (J): Ntau dua lossis sib npaug rau 47
Kev xa khoom hnyav: Tsawg dua lossis sib npaug rau 197
20NiCrMo2-2 txheej txheem kev kho cua sov:
quenching cua kub (degree): 850; Coolant: yog '
Tempering kub (degree): 200; Coolant:
Khoom npe: Chromium Nickel Molybdenum Steel
Cov qauv kev tswj hwm:
EN 10084-2008
EN 10263-3: 2001
EN 10297-1: 2003
