1. Q: Qhov sib txawv ntawm 20Cr thiab 40Cr steel yog dab tsi?
A:Qhov sib txawv tseem ceeb yog lawv cov ntsiab lus carbon . 20Cr yog qis- carbon chromium steel (~ 0.20% C), thaum 40Cr yog nruab nrab -carbon chromium steel (~ 0.40% C). Qhov no ua rau 40Cr muaj zog thiab nyuaj tab sis tsawg dua ductile tshaj 20Cr.
2. Q: Lub luag haujlwm tseem ceeb ntawm Chromium (Cr) hauv cov hlau no yog dab tsi?
A:Chromium (cov ntsiab lus ~ 0.8-1.1%) feem ntau txhim kho hardenability (qhov tob uas cov hlau tuaj yeem hardened thaum quenching), txhim kho corrosion kuj mus rau ib qho kev kawm, thiab pab txhawb lub zog los ntawm kev tsim cov carbides.
3. Q: Tus qauv twg yog feem ntau siv rau 20Cr thiab 40Cr steel hauv Suav teb?
A:Cov qauv suav feem ntau yog GB / T 3077 "Alloy qauv steels." Cov qib no sib npaug rau cov qib zoo sib xws hauv cov qauv thoob ntiaj teb xws li AISI 5120 (20Cr) thiab AISI 5140 (40Cr).
Mechanical Properties & Performance
4. Q: Qib twg, 20Cr lossis 40Cr, muaj zog tensile thiab hardness siab dua nyob rau hauv raws li -muab lub xeev?
A:40Cr muaj zog tensile ntau dua thiab hardness vim nws cov ntsiab lus carbon ntau dua.
5. Q: Qib twg zoo dua rau vuam, thiab vim li cas?
A:20Cr yog qhov zoo dua rau vuam. Nws cov ntsiab lus qis dua txo qhov kev pheej hmoo ntawm kev tsim cov tawv tawv, nkig martensite hauv tshav kub -Kev cuam tshuam cheeb tsam (HAZ), uas tuaj yeem ua rau tawg. Ua ntej- cua sov thiab tom qab- kev kho cua sov tseem yuav tsum tau siv rau cov ntawv thov tseem ceeb.
