Astm A350 Nws

ASTM A350 yog ib qho kev qhia tshwj xeeb uas npog cov pa roj carbon thiab cov hlau tsis tshua muaj hlau forgings, yuav tsum muaj kev ntsuas qhov hnyav rau cov kav dej. Qhov kev qhia tshwj xeeb no tau muab faib ua ob peb qib, txhua qhov qhia txog cov khoom sib txawv thiab cov kev pabcuam npaj. Khoom siv: ASTM ...

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Khoom siv:

ASTM A350 npog carbon thiab low-alloy steel forgings npaj rau siv nyob rau hauv qhov kev pab cuam uas tsis muaj kub. Cov kev cai tshwj xeeb ntawm cov tshuaj muaj pes tsawg leeg sib txawv nyob ntawm qib uas tau teev tseg hauv tus qauv.

Element	Kev sib xyaw, wt % Qib
Element	LF1	LF 2	LF3	LF5	LF 6	LF 9	lwv 787
C	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.20	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.22	Tsawg dua lossis sib npaug rau 0.20	Tsawg dua lossis sib npaug rau 0.07
Mn	0.60-1.35	0.60-1.35	Tsawg dua lossis sib npaug rau 0.90	0.60-1.35	1.15–1.50	0.40–1.06	0.40–0.70
P	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.025	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.025
S	Tsawg dua lossis sib npaug rau 0.040	Tsawg dua lossis sib npaug rau 0.040	Tsawg dua lossis sib npaug rau 0.040	Tsawg dua lossis sib npaug rau 0.040	Tsawg dua lossis sib npaug rau 0.025	Tsawg dua lossis sib npaug rau 0.040	Tsawg dua lossis sib npaug rau 0.025
Si	0.15-0.30	0.15-0.30	0.20-0.35	0.20-0.35	0.15-0.30	...	Tsawg dua lossis sib npaug rau 0.40
Ni	Tsawg dua lossis sib npaug rau 0.40	Tsawg dua lossis sib npaug rau 0.40	3.30-3.70	1.00-2.00	Tsawg dua lossis sib npaug rau 0.40	1.60-2.24	0.70–1.00
Cr	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	Tsawg dua lossis sib npaug rau 0.30	0.60–0.90
Mo	Tsawg dua lossis sib npaug rau 0.12	Tsawg dua lossis sib npaug rau 0.12	Tsawg dua lossis sib npaug rau 0.12	Tsawg dua lossis sib npaug rau 0.12	Tsawg dua lossis sib npaug rau 0.12	Tsawg dua lossis sib npaug rau 0.12	0.15-0.25
Cu	Tsawg dua lossis sib npaug rau 0.40	Tsawg dua lossis sib npaug rau 0.40	Tsawg dua lossis sib npaug rau 0.40	Tsawg dua lossis sib npaug rau 0.40	Tsawg dua lossis sib npaug rau 0.40	0.75–1.25	1.00-1.30
Cb	Tsawg dua lossis sib npaug rau 0.02	Tsawg dua lossis sib npaug rau 0.02	Tsawg dua lossis sib npaug rau 0.02	Tsawg dua lossis sib npaug rau 0.02	Tsawg dua lossis sib npaug rau 0.02	Tsawg dua lossis sib npaug rau 0.02	Ntau dua lossis sib npaug rau 0.02
V	Tsawg dua lossis sib npaug rau 0.08	Tsawg dua lossis sib npaug rau 0.08	Tsawg dua lossis sib npaug rau 0.03	Tsawg dua lossis sib npaug rau 0.03	0.04-0.11	Tsawg dua lossis sib npaug rau 0.03	Tsawg dua lossis sib npaug rau 0.03
N	...	...	...	...	0.01–0.030	...	...

*1. Thaum lub tshuab nqus tsev carbon-deoxidation xav tau, cov ntsiab lus silicon yuav tsum yog 0.12% siab tshaj.
*2. Rau qib LF1, LF2 & LF6, qhov suav ntawm Cu, Ni, Cr, V thiab Mo yuav tsum tsis pub tshaj 1.00 % ntawm kev ntsuas kub.
*3. Rau txhua qib tshwj tsis yog qib LF787, qhov sib npaug ntawm Cr thiab Mo yuav tsum tsis pub tshaj 0.32% ntawm kev ntsuas kub.
*4. Rau qib LF1 & LF2, qhov txwv rau Cb tuaj yeem nce mus txog 0.05 % ntawm kev ntsuas cua sov thiab 0.06 % ntawm kev tshuaj xyuas cov khoom.
*5. Cov pa roj carbon sib npaug CE=[C + Mn / 6 + (Cr + Mo + V)/5 + (Ni + Cu)/15] yuav tsum tsis pub tshaj 0.45 %.

Qib:

ASTM A350 muab faib ua ntau qib, suav nrog:

Qib LF1: Forgings rau qhov kev pabcuam kub qis qis mus rau -50 degree F [-46 degree].

Qib LF2: Forgings rau qhov kev pabcuam kub qis qis mus rau -150 degree F [-101 degree].

Qib LF3: Forgings rau qis-kub qhov kev pab mus rau -150 degree F [-101 degree] nrog rau qhov ntsuas toughness.

Qib LF5: Forgings rau qis-kub qhov kev pab mus rau -50 degree F [-46 degree].

Qib LF6: Forgings rau qis-kub qhov kev pab mus rau -50 degree F [-46 degree] nrog rau qhov ntsuas toughness.

Qib LF9: Forgings rau qis-kub qhov kev pab mus rau -150 degree F [-101 degree] nrog rau qhov ntsuas toughness.

Qib LF787: Forgings rau qis-kub qhov kev pab mus rau -150 degree F [-101 degree] nrog rau qhov ntsuas toughness.

Qib LF8M: Stainless hlau forgings rau qis-kub qhov kev pab mus rau -325 degree F [-198 degree] nrog rau qhov ntsuas toughness.

ASTM A350 Mechanical Properties

Qib/Class	Tensile zog		Yield zog, min.		Elongation, min.	Hardness, max.
Qib/Class	ksi ua	MPa	ksi ua	MPa	%	HBW
LF1 CL1	60-85	415–585	30	205	25	197
LF5 CL1	60-85	415–585	30	205	25	197
LF2 CL1	70–95	485–655	36	250	22	197
LF2 CL2	70–95	485–655	36	250	22	197
LF3 CL1	70–95	485–655	37.5	260	22	197
LF3 CL2	70–95	485–655	37.5	260	22	197
LF5 CL2	70–95	485–655	37.5	260	22	197
LF6 CL1	66–91	455–630	52	360	22	197
LF6 CL2	75–100	515–690	60	415	20	197
LF6 CL3	75–100	515–690	60	415	20	197
LF 9	63–88	435–605	46	315	25	197
SWB 787 CL2	65-85	450-585	55	380	20	197
TIAB SA 787 CL3	75-95	515-655	65	450	20	197

*1. Cov txiaj ntsig elongation yog nyob ntawm tus qauv puag ncig cov qauv, lossis cov qauv me me, min % hauv 4D ntsuas qhov ntev.
*2. Lub zog tawm los yuav tsum txiav txim siab los ntawm 0.2 % offset txoj kev lossis 0.5 % txuas ntxiv raws li txoj kev thauj khoom.

Kev Ntsuas Toughness:

Qee qib ntawm ASTM A350 yuav tsum tau ntsuas qhov kev sib tw toughness los xyuas kom meej txaus toughness thiab tsis kam mus nkig tawg ntawm qhov kub thiab txias. Cov kev ntsuam xyuas no yog qhov tseem ceeb rau cov ntawv thov uas cov khoom raug rau qhov kub thiab txias los yog lwm qhov chaw kub kub.

Kev kho cua sov & Vuam txheej txheem

Raws li tau teev tseg los ntawm ASTM A350, tom qab ua haujlwm kub thiab ua ntej rov ua kom sov rau kev kho cua sov, lub forging yuav tsum tau tso cai kom txias ntau hauv qab qhov kev hloov pauv. Forgings ntawm qib uas tsis yog Qib LF787 yuav tsum tau muab nyob rau hauv lub normalized, los yog normalized thiab tempered, los yog quenched thiab tempered mob. Tag nrho cov quenched forgings yuav tsum tau tempered ntawm 1100 degree F [590 degree], yam tsawg kawg nkaus, tuav ntawm qhov kub ntawm qhov tsawg kawg nkaus ntawm 30 min / in. [30 min / 25 mm] ntawm qhov siab tshaj plaws, tab sis tsis muaj tsawg dua 30 min. Qib LF787 forgings yuav tsum tau muab tso rau hauv qhov zoo li qub-thiab- nag lossis daus los kho cua sov los yog nyob rau hauv quenched-thiab- nag lossis daus kub kho mob.

Rau Qib LF1 thiab LF2 forgings, cov hlau vuam yuav tsum muab tso rau hauv cov hlau electrodes E 7015, E 7016, lossis E 7018, ua raws li AWS A 5.1. Rau Qib LF2 forgings, cov hlau vuam yuav tsum muab tso rau hauv cov hlau tsis tshua muaj hlau electrodes E 7015-A1; E 7016-A1, or E 7018-A1 ua raws AWS 5.5; rau Qib LF3 forgings, cov hlau vuam yuav tsum muab tso rau hauv cov hlau tsis tshua muaj hlau electrodes E 8016-C2 lossis E 8018-C2 ua raws AWS A 5.5; rau Qib LF5, LF9, thiab LF787 forgings, cov hlau vuam yuav tsum muab tso rau hauv cov hlau tsis tshua muaj hlau electrodes E 8016-C1 lossis E 8018-C1 ua raws AWS A 5.5. Rau Qib LF6, cov electrodes yuav tsum tsis tshua muaj hydrogen, E-XX15, E-XX16, lossis E-XX18 ua raws AWS A 5.1 lossis A 5.5, raws li muaj.

Daim ntawv thov:

ASTM A350 forgings feem ntau yog siv rau hauv ntau yam lag luam, suav nrog roj thiab roj, petrochemical, tshuaj ua haujlwm, tsim hluav taws xob, thiab kev siv dej hiav txwv. Lawv yog siv los tsim cov kav dej xws li flanges, fittings, li qub, thiab cov hlab ntsha siab uas tsim los rau cov kev pabcuam kub qis.

Standards Ua raws li:

ASTM A350 forgings yuav tsum ua raws li cov kev cai uas tau teev tseg hauv ASTM A350 / A350M Standard Specification rau Carbon thiab Low-Alloy Steel Forgings, Yuav Tsum Tau Qhov Ntsuas Toughness Test rau Piping Cheebtsam. Tsis tas li ntawd, lawv yuav tsum ua kom tau raws li lwm cov qauv kev lag luam thiab cov kev qhia tshwj xeeb, xws li ASME B16.5, ASME B16.34, ASME B16.11, thiab API 6A, nyob ntawm daim ntawv thov thiab xav siv.

Cov Qauv Khoom & Dimensional Standards

Tus Qauv Dimensional rau ASTM A350 Forgings
ASME B16.5	Hlau yeeb nkab Flanges thiab Flanged Fittings
ASME B16.9	Factory-MadeWroughtSteelButt-WeldingFittings
ASME B16.11	Forged Steel Fittings, Socket-Vuam thiab Threaded 4
ASME B16.34	Valves-Flanged, Threaded, thiab Vuam kawg
ASME B16.47	Loj Diameter Steel Flanges
API 600	Steel Gate Valves nrog Flanged lossis Butt-Vuam xaus
API 602	Compact Design Carbon Steel Gate Valves rau Refinery Siv
API 605	Loj Diameter Carbon Steel Flanges

Cim npe nrov: Tuam Tshoj astm a350 manufacturers, lwm tus neeg

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