I. Cov ntsiab lus tseem ceeb
S275Joh yog ib qho qis alloy-zog qauv hlau txheej txheem, choj thiab siv ntau dua lossis sib luag ntawm 275mpa) thiab kev ua haujlwm vuas tau zoo.
Ii. Naming cov cai thiab kev ua tiav Indexes
Naming lub ntsiab lus:
S: Sawv rau 'qauv hlau' (cov hlau qauv qauv);
275: Qhia tias tsawg kawg yog lub zog zog ntawm 275MPA;
Joh: qhia nws cov kev cuam tshuam tshwj xeeb thiab ua cov khoom ('j' rau qhov ntsuas kub ib txwm muaj tseeb, 'o'). Joh: Qhia nws raws li muaj qee qhov kev cuam tshuam tshwj xeeb cov kev cuam tshuam thiab kev cuam tshuam rau qhov kub thiab siv tau, thiab 'yuav qhia txog kev sib tw kub lossis ib qho kev ua tau zoo tshwj xeeb).
Cov Khoom Siv Neeg Kho Tshuab:
Paib lub zog: ntau dua los yog sib luag rau 275 mpa;
Tensile lub zog: {430-580 mpa;
Elongation: ntau dua los yog sib npaug rau 18% (xav txog kev ductility ntawm cov khoom siv).
Thib peb, cov tshuaj lom neeg
Cov tshuaj lom neeg muaj kuab lom ntawm S275Joh yog kev tswj hwm nruj me ntsis, thiab cov ntau ntawm cov ntsiab lus tseem ceeb yog raws li hauv qab no (loj rau ib xees):
Cov pa roj carbon (c): tsawg dua lossis sib npaug rau 0. 20%;
Manganese (mn): tsawg dua lossis sib npaug rau 1.50%;
Silicon (si), phosphorus (p), leej faj (xws li tswj tau nyob rau ntawm qib qis (xws li sib luag rau 0.035%) kom ntseeg tau tias VeDability thiab corrosion tsis kam.
Plaub, daim teb ntawm daim ntawv thov
Tsev qauv:
Load-cov kabmob sib xws xws li Choj txhawb nqa, kev ua kom siab tshaj plaws lub tsev, thiab lwm yam.
Machinery Raug:
Kev siv cov tshuab mach tshuab
Cov yeeb yaj kiab tshwj xeeb:
Txoj kev ib puag ncig nyuaj (xws li cov av noo, corrosive media) nyob rau hauv kev tawm tsam nkees, corrosion-resistant txheej txheem.
V. Txoj Kev Kawm thiab Qauv
Kev ua tiav cov qauv: en 10025 (European Txheej txheem hlau qauv hlau), npog cov dov kub thiab dov thiab lwm yam kev cai.
Kev xa tawm cov xwm txheej: Feem ntau muab rau hauv kub dov lossis tswj dov lub zog, thiab tuaj yeem raug welded, txiav lossis ua kom txias.
VI. Qhov sib txawv nrog cov ntaub ntawv zoo sib xws
Kev sib piv ntawm S275JR:
S275Joh muaj cov kev cuam tshuam zoo dua ('Joh' cim) thiab yog tsim nyog rau ntau cov qauv thauj khoom siv hluav taws xob zoo nkauj, tsom mus rau lub zog yooj yim.
Kev sib piv nrog Q355B (GB):
S275Joh muaj me ntsis qis zog zog zog zog dua Q355B (355 MPa), tab sis qhov kub zoo dua vuam thiab qis kub.
Lub ntsiab
S275Joh yog European tus qauv qis alloy lub zog qauv kev ua tau zoo, zoo heev vuas lub zog zoo li nws cov laj thawj zoo, dav siv hauv kev tsim kho, txuas hniav thiab tshuab ua lag luam teb thiab machinery manufacturing teb. Qhov 'Joh' kev tsim qauv nyob rau hauv nws cov qauv qhia txog kev xav tau rau kev cuam tshuam kov thiab kev sib txawv ntawm cov qauv hlau xws li S275JR.
