Tus qauv Suav teb ncaj qha (GB) sib npaug rau European steel qib S500QL yog: Q500D lossis Q500E (nrog cov xwm txheej tseem ceeb tau teev tseg), feem ntau tswj hwm los ntawm tus qauv GB / T 16270-2018《High lub zog structural steel daim hlau nthuav qhia.
Txawm li cas los xij, kev ua tiav qhov sib npaug tiag tiag yuav tsum tau ua tib zoo saib xyuas, vim tias Suav cov qhab nia tsis muaj qhov cuam tshuam ncaj qha rau "Quenched thiab Tempered" (QL) hauv nws qib qeb. Qhov sib npaug yog tsim los ntawm kev sib piv cov khoom siv kho tshuab thiab cov khoom xa tuaj.
Nov yog cov ncauj lus kom ntxaws:
1. Qhov sib npaug kom raug: Q500D / Q500E hauv qab GB / T 16270
Qib: Q500
Q= Yield zog (Qufu hao)
500= Yam tsawg kawg nkaus tawm lub zog hauv MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli).
Qib Qib (Toughness):D los E
D= Impact toughness kuaj ntawm -20℃.
E= Impact toughness kuaj ntawm -40℃.
Tseem ceeb:S500QL xav tau 27J ntawm -40 degree. Yog li, Q500E yog qhov sib tw ze rau tus qauv S500QL. Q500D yuav raug txiav txim siab yog tias tus qauv tsim kub siab dua, tab sis nws yog qhov txo qis hauv qhov hnyav.
Primary Standard: GB/T 16270-2018. Cov qauv no suav nrog siab - lub zog cov qauv hlau nrog cov txiaj ntsig zoo ntawm 460 MPa txog 960 MPa thiab suav nrog cov kev cai rau kev xa khoom.
2. Qhov tseem ceeb, Tsis yog -Tshaj tawm Specification
Tsuas yog xaj "Q500E" tsis txaus. Koj yuav tsum qhia meej meej txog qhov kev xa khoom kom haum rau "QL" (Quenched thiab Tempered) xeev ntawm S500QL.
Koj yuav tsum qhia meej:"Q500E hauv Quenched thiab Tempered (Q + T) mob" lossis "Q500E, kev xa khoom: quenching thiab tempering".
Vim li cas qhov no tseem ceeb:GB / T 16270 tso cai rau kev xa khoom sib txawv (thermomechanical dov / TMCP, quenching thiab tempering / Q + T). Lub "QL" hauv S500QL tsis yog ib qho kev xaiv tom qab; nws txhais tau tias tag nrho cov txheej txheem kho cua sov uas muab cov hlau nws cov khoom tseem ceeb (siab zog nrog zoo heev toughness nyob rau hauv tuab seem). Yog tias koj tsis qhia Q + T, koj tuaj yeem tau txais TMCP steel, uas, thaum siab - lub zog, tsis muaj qhov zoo ib yam los ntawm - thickness microstructure uniformity thiab tempering cov txiaj ntsig raws li qhov tseeb Q + T steel, muaj feem cuam tshuam rau weldability, HAZ zog, thiab tawg toughness.
3. Sib piv Table: S500QL vs. GB sib npaug
| Feature | S500QL (EN 10025-6) | Sib npaug Suav Qib (GB) |
|---|---|---|
| Txuj | TS EN 10025-6 | GB/T 16270-2018 |
| Qib Qib | S500 QL | Q500E (rau -40℃cuam tshuam) |
| Min. Yield zog | Ntau dua lossis sib npaug li 500 MPa (t Tsawg dua lossis sib npaug li 16 hli) | Ntau dua lossis sib npaug li 500 MPa (t Tsawg dua lossis sib npaug li 16 hli) |
| Tensile zog | 590 - 770 MPa | 610 - 770 MPa (Zoo sib xws) |
| Impact Toughness | 27J @ -40 degree | Ntau dua lossis sib npaug rau 47J @ -40℃(Q500E)Nco tseg: GB xav tau ntau dua. |
| Kev Xa Khoom | Quenched & Tempered (QL) | Yuav tsum tau teev tseg: Quenched & Tempered (Q + T) |
| Daim ntawv thov tseem ceeb | cranes, offshore, hnyav machinery | Ib yam: cranes, cov khoom siv mining, cov qauv siab heev |
4. Cov Lus Pom Zoo thiab Kev Pom Zoo
Txhawm rau kom ntseeg tau tias koj tau txais cov khoom raug, koj daim ntawv xaj lossis kev cog lus yuav tsum suav nrog cov lus xws li:
"Cov ntaub ntawv: Q500E raws li GB / T 16270-2018, nyob rau hauv quenched thiab Tempered (Q + T) tus me nyuam lub sij hawm. Impact toughness yuav tsum tau raws li ntau tshaj los yog sib npaug rau 47J ntawm -40 degree. Cov ntaub ntawv pov thawj yuav tsum qhia meej meej txog Q + T txheej txheem kho cua sov."
5. Lwm Cov Qauv Muaj Peev Xwm (Cov ntsiab lus-nyob ntawm)
Rau qee qhov kev siv tshuab engineering, koj kuj tuaj yeem pom cov kev qhia tshwj xeeb hauv kev lag luam - cov qauv tshwj xeeb, tab sis lawv feem ntau yuav hla - hais txog cov khoom siv hauv paus ntawm GB / T 16270.
Rau choj hlau, muaj ib qho kev sib cais GB / T 714, tab sis nws qib siab tshaj plaws yog Q500qE, uas yog rau quenched thiab tempered choj hlau. Qhov no yog qhov sib npaug tshwj xeeb thiab tuaj yeem siv tau yog tias qhov project tshwj xeeb rau kev tsim kho choj.
Cov ntsiab lus
Suav sib npaug ntawm S500QL yog: Q500E (rau -40℃cuam tshuam) lossis Q500D (rau -20℃cuam tshuam, yog tias tsim nyog), muab rau hauv Quenched thiab Tempered mob raws li GB / T 16270-2018.
Qhov tseem ceeb ntawm kev tshem tawm: Qib Q500E phim lub zog thiab qis -kub toughness. Txawm li cas los xij, qhov sib npaug "QL" tsuas yog ua tiav los ntawm kev yuam kom "Quenched thiab Tempered" kev xa khoom hauv daim ntawv cog lus. Kev tsis lees paub qhov xwm txheej no yog qhov yuam kev loj tshaj plaws thiab tseem ceeb hauv kev hla - qauv hloov khoom siv.