Q550D yog ib hom ntawm lub zog siab steel phaj, uas yog dav siv nyob rau hauv ntau yam engineering thiab manufacturing teb. Ntawm no yog cov ncauj lus kom ntxaws txog Q550D.
Q550D muaj pes tsawg leeg thiab qauv:
Cov tshuaj muaj pes tsawg leeg ntawm Q550D feem ntau suav nrog carbon, silicon, manganese, phosphorus, sulfur thiab lwm yam. Ntawm lawv, cov pa roj carbon monoxide yog ib qho tseem ceeb tshaj plaws hauv cov hlau, uas tuaj yeem ua kom lub zog thiab hardness ntawm hlau. Silicon thiab manganese kuj tseem siv cov alloying ntsiab lus, thiab lawv tuaj yeem ua kom lub zog thiab tawv ntawm cov hlau. Phosphorus thiab sulfur yog impurity hais nyob rau hauv steel, thiab lawv txo cov toughness thiab weldability ntawm hlau.
Lub microstructure ntawm Q550D feem ntau yog ferrite thiab pearlite. Cov qauv no muab siab zog thiab toughness nrog zoo weldability.
Q550D Mechanical Properties:
Lub zog siab thiab hardness ntawm Q550D yog nws cov khoom tseem ceeb tshaj plaws ntawm cov cuab yeej cuab tam. Tom qab kev kho cua sov kom tsim nyog, nws lub zog tensile tuaj yeem ncav cuag tshaj 550 MPa thiab nws qhov taw tes tawm los tuaj yeem tshaj 350 MPa. Tsis tas li ntawd, nws elongation thiab cuam tshuam toughness yog qhov siab, uas tuaj yeem ua tau raws li qhov xav tau ntawm ntau yam kev siv engineering.
Q550D lub cev muaj zog:
Q550D muaj qhov ntom ntom ntawm 7.85g / cm³, nrog lub zog siab thiab hardness, nrog rau zoo toughness thiab ductility. Nws muaj cov thermal conductivity tsawg li ntawm 12 W / (mK) thiab coefficient ntawm thermal expansion ntawm txog 11 x 10^-6/K. Cov khoom no muab nws zoo seem stability ntawm qhov kub thiab txias.
