Decoding lub npe qib "S890QL 1" yog thawj kauj ruam kom nkag siab txog qhov siab no - steel kev ua tau zoo. Nws ua raws li European tus qauv EN 10025-6 naming convention, qhov twg txhua tus cim muaj lub ntsiab lus tshwj xeeb.
Nov yog qhov kev sib cais:
S - Cov Qauv Hlau
Qhov no qhia tau hais tias cov hlau yog npaj rau kev thauj khoom -cov kabmob kev siv hauv kev tsim kho thiab kev tsim vaj tsev (xws li cov tsev, txuas hniav, cranes, cov khoom hnyav), uas tsis yog cov cuab yeej steel, stainless hlau, thiab lwm yam.
890 - Yam tsawg kawg nkaus tawm lub zog
Qhov no yog qhov qhia txog kev ua haujlwm tseem ceeb. Nws qhia txog qhov tsawg kawg nkaus tawm lub zog (ReH) ntawm cov khoom: 890 Megapascals (MPa) ntawm chav tsev kub.
Hauv imperial units, qhov no yog kwv yees li 129 ksi (kilo-pounds ib square inch). Qhov no faib nws ua ib qho ultra-siab- lub zog steel.
Q - Quenched thiab Tempered
Qhov no txhais tau hais tias cov thermo- kho tshuab cov hlau ua kom tiav nws cov khoom.
Quenching: Cov hlau yog rhuab mus rau qhov kub siab heev (austenitized) thiab tom qab ntawd txias sai heev (feem ntau hauv dej lossis roj). Qhov no ua rau ib qho nyuaj heev tab sis brittle microstructure hu ua martensite.
Tempering: Cov hlau quenched yog reheated rau ib qho tshwj xeeb, qis kub thiab tuav. Cov txheej txheem no txo cov hardness me ntsis tab sis ua rau kom muaj zog thiab ductility, ua rau cov khoom tsim nyog rau kev thov kev siv engineering. Qhov "Q" yog qhov tseem ceeb heev - nws txhais tau hais tias muaj kev tswj hwm, siab - thev naus laus zis txheej txheem tsim khoom.
L - Kev xa khoom rau kev cuam tshuam Toughness
Tsab ntawv no qhia txog qhov ntsuas qhov ntsuas qhov tsawg kawg nkaus rau cov hlau Charpy V-Notch (CVN) cuam tshuam lub zog, uas ntsuas cov pob txha toughness.
"L" sawv cev rau "Low" ntsuas kub. Nws tso cai rau cov hlau tau txais kev lees paub muaj peev xwm nqus tau qhov tsawg kawg nkaus ntawm kev cuam tshuam lub zog ntawm sub-zero kub.
1 - Kub sub- qib
Tus lej no piav qhia ntxiv txog qhov ntsuas kub tshwj xeeb rau qhov kev ntsuas cuam tshuam uas yuav tsum tau ua los ntawm "L".
"L1" txhais tau hais tias qhov kev ntsuas cuam tshuam tau ua ntawm -60℃(-76℃F).
(Rau kev sib piv, "L" tsis muaj tus lej, lossis qee zaum "L0", feem ntau qhia txog kev ntsuas ntawm -40℃(-40℃F)).
Muab Nws tag nrho ua ke:
S 890 Q L1 txhais tau tias:
Lub quenched thiab tempered structural steel nrog ib tug guaranteed yam tsawg kawg nkaus yield zog ntawm 890 MPa, muab nrog rau kev txheeb xyuas tej yam toughness ntawm -60 degree.
Vim li cas qhov no tseem ceeb:
Cov npe no tam sim no sib txuas lus cov ntaub ntawv tseem ceeb rau engineers, designers, thiab buyers:
"890" qhia koj nws qib zog.
"Q" qhia koj txog nws cov txheej txheem tsim khoom thiab qhia txog nws cov kev sib tw weldability.
"L1" qhia koj txog nws txoj kev nyab xeeb ntawm kev puas tsuaj ntawm qhov kub thiab txias, uas yog qhov tseem ceeb rau kev siv hauv cov huab cua txias, cov qauv hauv ntug dej hiav txwv, lossis ib qho kev nyab xeeb - cov khoom tseem ceeb.
Yog li ntawd,kev qhia S890QL1 tsis yog tsuas yog xaj "cov hlau muaj zog"; nws tab tom yuav khoom nrog cov ntawv pov thawj ua ke ntawm ultra-siab zog thiab tshwj xeeb qis- kub toughness.