ASTM-SA516Gr60Z35 steel phaj qhov tsis xws luag nrhiav tau:
1. SA516Gr60 tus qauv ua haujlwm: American ASTM, ASME cov qauv
2. SA516Gr60 yog cov khoom siv kub tsawg nrog cov phaj carbon
3. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm SA516Gr60
C≤0.30, Mn: 0.79-1.30, P≤0.035, S: ≤0.035, Si: 0.13-0.45.
4. Cov khoom siv kho tshuab ntawm SA516Gr60
SA516Gr60 lub zog tensile ntawm 70 txhiab phaus / square inch, cov ntsiab lus tseem ceeb yog C Mn Si ps tswj txiav txim siab nws qhov kev ua tau zoo. Lwm cov ntsiab lus tsawg dua. Asme Standard Specification rau carbon steel phaj rau nruab nrab thiab qis kub siab hlab ntsha.
5. Kev xa khoom ntawm SA516Gr60
SA516Gr60 steel phaj feem ntau yog muab rau hauv lub xeev dov, steel phaj kuj tseem tuaj yeem ua kom zoo li qub lossis txo kev ntxhov siab, lossis ua kom zoo li qub ntxiv rau kev txiav txim siab txo kev ntxhov siab.
SA516Gr60 tuab> 40mm hlau phaj yuav tsum tau normalized.
Tshwj tsis yog tias tus neeg thov kev pab tau teev tseg lwm yam, qhov tuab ntawm cov hlau phaj ≤1.5in, (40mm), thaum muaj cov kev cai nruj, yuav tsum tau ua kom zoo li qub.
6. SA516Gr60 yog siv los tsim cov thawv vuam ib txheej, ntau txheej kub kub, ntau txheej hnav khaub ncaws, thiab lwm yam ob thiab peb hom thawv thiab cov thawv kub qis. Siv dav hauv roj av, kev lag luam tshuaj lom neeg, chaw tsim hluav taws xob, boiler thiab lwm yam haujlwm, siv rau kev tsim cov reactors, cov khoom hloov pauv cua sov, cov khoom sib cais, cov thoob khib nyiab kheej kheej, cov thoob khib nyiab roj thiab roj, cov thoob khib nyiab roj liquefied, lub nruas boiler, cov thoob khib nyiab roj liquefied, cov kav dej siab siab ntawm chaw tsim hluav taws xob hydropower, cov turbine volute thiab lwm yam khoom siv thiab cov khoom.
7. Thaum lub austenite txias qeeb qeeb (sib npaug rau lub cub tawg txias, raws li pom hauv daim duab 2 V1), cov khoom hloov pauv ze rau qhov sib npaug ntawm cov qauv, uas yog pearlite thiab ferrite. Nrog rau qhov nce ntawm qhov txias, uas yog, thaum V3> V2> V1, qhov tsis txias ntawm austenite maj mam nce, thiab qhov ntau ntawm cov ferrite precipitated ua tsawg dua thiab tsawg dua, thaum qhov ntau ntawm pearlite maj mam nce, thiab cov qauv ua finer. Lub sijhawm no, me me ntawm cov ferrite precipitated feem ntau yog faib rau ntawm ciam teb noob.
8. Yog li ntawd, cov qauv ntawm v1 yog ferrite + pearlite; Cov qauv ntawm v2 yog ferrite + sorbite; Lub microstructure ntawm v3 yog ferrite + troostite.
9. Thaum tus nqi txias yog v4, ib qho me me ntawm network ferrite thiab troostite (qee zaum me me ntawm bainite tuaj yeem pom) tau precipitated, thiab cov austenite feem ntau hloov mus rau hauv martensite thiab troostite; Thaum tus nqi txias v5 tshaj qhov tseem ceeb ntawm tus nqi txias, cov hlau tau hloov mus rau hauv martensite tag nrho.
10. Kev hloov pauv ntawm cov hlau hypereutectoid zoo ib yam li cov hlau hypoeutectoid, nrog rau qhov sib txawv uas ferrite precipitates ua ntej hauv qhov kawg thiab cementite precipitates ua ntej hauv qhov qub.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-14-2022
