ASTM A387 yog cov qauv kev tshawb fawb los ntawm Asmeskas haiv neeg rau kev sim thiab cov khoom siv (ASTM) uas npogchromium - molybdenum (cr - mo) Alloy Hlau Daim HlauNpaj rau Welded Siab Hlab Hlais thiab High - kev pab kub. Cov alloys tau muaj nuj nqis rau lawv zoo heev - kub ua rau muaj kev lag luam, thiab siv hluav taws xob, tshwj xeeb yog lub zog thiab kev ua haujlwm.

 

Hauv qab no yog cov ncauj lus kom ntxaws ntawm cov qhab nia siv feem ntau nyob hauv ASTM A387:Qeb 5, 9, 11, 12, 22, thiab 91.

Cov yam ntxwv tseem ceeb ntawm Astm A387 Alloys

Txhua qib nyob rau hauv ASTM A387 yog tsim los rau siab- qhov kev pab kub (feem ntau ib sab 300℃f) thiab qhia cov khoom tseem ceeb:

 

Lub zog siab thiab tawm lub zog kub.

Kuj yog qhov nkag mus (qeeb deformation nyob rau hauv kev thauj khoom ntawm kev kub siab).

Zoo weldability thiab formability (nrog kom tsim nyog ua ntej / tshaj tawm - weld kev kho cua sov).

Kuj rau hydrogen nres thiab oxidation nyob rau hauv cov chaw hnyav (piv txwv li, hydrogen - kev nplua nuj lossis cov txheej txheem xeb).

Cov ncauj lus kom ntxaws ntawm txhua qib

1. Astm A387 Qib 5

Alloy muaj pes tsawg leeg (raug): 5% CR, 0.5% MO (Tshuav Fe (Tshuav Fe, Nrog Cov Ntsiab Lus Me Zoo li C, MN, P, S).

Cov Khoom Siv Tseem Ceeb:

Lub zog tensile: 415-585 mpa (60-85 ksi).

Tos lub zog: ntau dua los yog sib npaug rau 205 MPa (30 KSI).

Cov Ntsiab Lus Chromium Cov Ntsiab LusTxhim kho cov oxidation tsis kam, ua rau nws haum rau kev muaj mob siab - qhov chaw ib puag ncig.

Kev Kho Cua Sov: Neverized thiab tempered (feem ntau 650-700℃/ 1200-1290℃f).

Cov Ntawv Thov:

Siab nkoj hauv kev ua yeeb yam (tswj kev txhim kho corrosive lossis oxidizing media).

Kev sib xyaw ua kom sov thiab cua sov sib pauv ua haujlwm ntawm 400-500℃(752-932 Qib F).

 

 

 

 

 

2. Astm A387 Qib 9

Alloy muaj pes tsawg leeg (raug): 9% cr, 1% mo (nrog kab ntawv zoo li C, MN, SI).

Cov Khoom Siv Tseem Ceeb:

Lub zog tensile: 515-690 MPA (75-100 KSI).

Tos lub zog: ntau dua los yog sib luag rau 275 MPa (40 KSI).

Txhim kho siab - lub zog sib piv tau piv rau cov qib qis; Zoo oxidation tsis kam tshaj qib 11 lossis 12.

Kev Kho Cua Sov: Nonomized (900-980 Qib / 1652-1796 Degree F) + Tempered (730-780 Qib / 1346-1436 Degree F).

Cov Ntawv Thov:

High - kub boilers thiab chav kav hauv cov nroj tsuag fais fab.

Cov hlab ntsha siab rau cov txheej txheem petrochemical nrog kub siab (txog 600℃/ 1112℃f).

 

 

 

 

 

Vim li cas thiaj xaiv peb?
Peb zoo siab rau peb lub peev xwm muab cov kev daws teeb meem rau peb cov neeg siv khoom xav tau.
Peb tshawb xyuas thiab muab cov khoom siv dhau los thiab cov txheej txheem txheej txheem tam sim no ntawm peb cov}}}}}}}} {1, 91 alloy steel phaj thiab cov txheej txheem.
Peb cov neeg muas zaub ntseeg peb kom xa cov siab -}} rolled steel khoom raws sijhawm thiab ntawm pob nyiaj.
Peb nruj me ntsis siv cov cua sov thiab txawj xav tom qab {{0} Kev pabcuam muag khoom, ua raws li kev coj ua zoo.
Peb muab ntau yam txias - rolled steel khoom kom tau raws li cov neeg yuav khoom sib txawv.
Peb ua raws li cov qhua tuaj noj mov - centric thiab hom - Cov khoom lag luam uas ntseeg tau thiab cov kev pabcuam zoo.
Peb lub Hoobkas tau cog lus los txhawb cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab kev ua tau zoo.
Txhua tus neeg ua haujlwm ntawm peb lub tuam txhab thiab txhua lub tsev ua haujlwm ua haujlwm ua ke los ua haujlwm ua lag luam, kev kawm txuj ci thiab kev kawm paub tseeb.
Peb txias - rolled steel khoom yog paub rau lawv cov kav ntev thiab kev ntseeg tau.
Cia siab rau cov kev mob siab tshaj thiab muaj zog ntawm cov pawg ntau lawm, peb muaj peev xwm ua tau raws li cov kev xav tau ntawm peb cov neeg siv khoom.

 

 

 

Cim npe nrov: ASTM A387 gr . 5}}}}}}}}}}}}}}}}}}}}}}}}}} {, 91 ali1 Alloy Steel Phaj Tuam Tshoj, Hoobkas