1. Dab tsi yog qhov tseem ceeb tshaj plaws cov qauv ntawm ASTM A420 tus qauv?
A: Cov qauv no siv rau forged carbon hlau thiab alloy steel yeeb nkab fittings (ib txwm nyob hauv qab}} 46℃/ -50℃f). Cov qib khoom suav nrog Wpl6 thiab WPL9, thiab yog feem ntau siv nyob rau hauv cov tshuab tsawg xws liquefied nkev (lng) thiab petrochemicals.
2. Dab tsi yog cov khoom tseem ceeb uas yuav tsum tau ua nyob rau hauv cov txheej txheem yuav tsum tau ua?
A:
Tshuaj lom neeg cov khoom siv: cov ntsiab lus ntawm cov pa roj carbon, manghologe, phosphorus, thiab cov neeg mob carbon yuav tsum tsawg dua lossis sib npaug nrog 0.30% kom ntseeg tau tias tsawg heev {qhov kub.
Kev Kho Cua sov: ua haujlwm ib txwm los yog ib txwm ua thiab tempering yuav tsum tau ua kom tshem tawm kev ntxhov siab ntau dua thiab ua kom zoo qoob loo loj.
Kev Cuam Tshuam Kev Ntsuam Xyuas: Cov khoom yuav tsum tau hla lub charpy v - cov kev txwv tsis pub siv lub zog ntawm -46℃lossis qis dua).
3. Cov kev xav tau tshwj xeeb rau kev tsim khoom lag luam?
A:
Forging Txheej Txheem: Cov fittings yuav tsum tau forged; Casting yog txwv. Kev siv vuam: Kev siv vuam cov khoom siv yuav tsum phim rau cov khoom siv cua sov, thiab kev kho kom sov.
Cov kev kho deg: sab hauv thiab sab nraud yuav tsum muaj qhov tsis xws luag xws li cov kab nrib pleb thiab quav. Sib nqus me me lossis kev sim ntsuas kev sib tw yuav tsum tau ua raws li qhov tsim nyog.
4. Cov kev sib xws thiab qhov sib txawv ntawm Astm A420 thiab A960?
Teb:
Kev Txheeb Ze: A420 xa mus rau cov kev xav tau dav dav ntawm A960 (xws li qhov ntev ntev thiab cov cim), tab sis A420 yog tsim tshwj xeeb rau qis- kev pab kub.
Qhov sib txawv: A420 txuas ntxiv yuav tsum muaj tsawg- kev cuam tshuam kub, thiab cov khoom siv tawv me, thiab cov khoom siv tawv me me, yog haum rau cov kev kub.
5. Puas muaj cov txheej txheem hloov tshiab hauv qhov tseeb version (2025)?
Teb: Raws li lub Yim Hli 2025, qhov tseeb version yog Astm A420-23. Hloov tshiab muaj:
Kev tshuaj xyuas thev naus laus zis: tso cai rau kev sim ua kom muaj kev sim siab tshaj plaws (xws li ntsuas muaj array ultrasonic.
Yuav tsum muaj ib puag ncig ib puag ncig: txwv cov pa roj carbon monissions thaum kho cua sov (piv txwv li, siv lub zog kom huv).
Cov lus piav qhia ntxiv: Tus yuam sij rau tus txheej txheem no yog los xyuas kom cov anti - brittle kev ua haujlwm ntawm cov khoom siv ntawm cov khoom siv kub tsawg. Cov neeg siv yuav tsum tau xaiv cov qib tsim nyog thiab cov txheej txheem raws li cov kev ua haujlwm tshwj xeeb (xws li tsim kev ua haujlwm (xws li tsim kev ua haujlwm (xws li tsim kub thiab siab).
