ASTM A691 Qib 1 CR Alloy Steel Yeeb Nkab

ASTM A691 Qib 1 CR yog hluav taws xob -fusion-welded (EFW) alloy steel yeeb nkab ua los ntawm ASTM A387 Qib 12 siab- nkoj phaj. Lub hauv paus phaj yog 1Cr-0.5Mo steel - kwv yees li 1% chromium thiab 0.5% molybdenum - uas muab cov yeeb nkab tiav zoo creep zog thiab oxidation tsis kam ntawm qhov kub thiab txias. Vim tias nws yog welded los ntawm phaj es tsis yog kos raws li lub raj seamless, A691 tuaj yeem muab tau rau hauv cov phab ntsa hnyav thiab cov kab loj loj uas yuav nyuaj lossis kim ua lwm txoj hauv kev.

 

"Qib 1 CR" txhais li cas

Hauv ASTM A691, lub npe qib qhia koj tias lub siab twg - lub nkoj phaj cov yeeb nkab yog welded los ntawm. Qib 1 CR siv ASTM A387 / A387M Qib 12 phaj, 1.25Cr-0.5Mo-Si steel. Qhov no tsis yog 9% chromium qib - uas yuav yog A691 Qib 9 CR, uas siv A387 Qib 9 phaj thiab belongs rau chav kawm alloy ntau dua.

A691 kuj muab ib chav kawm uas tswj kev kho cua sov thiab ntsuas tensile:

Chav Kawm 11- A387 Gr 12 Chav Kawm 1, raws li -rolled/annealed

Chav Kawm 12- A387 Gr 12 Chav Kawm 1, normalized & tempered

Chav Kawm 21- A387 Gr 12 Chav Kawm 2, normalized & tempered

Chav Kawm 22- A387 Gr 12 Chav Kawm 2, quenched & tempered

Yog tias daim ntawv xaj xaj tsuas yog hais tias "Qib 1 CR" yam tsis muaj chav kawm, nug tus neeg muag khoom rau cov chav kawm thiab cov khoom siv sib txuam. Txoj cai tsim feem ntau txiav txim siab qhov no.

 

Specifications

Parameter	Hom kab mob
Txuj	ASTM A691 Cov Lus Qhia Tshwj Xeeb
Txheej txheem	Hluav taws xob fusion welded (EFW) los ntawm A387 Gr 12 phaj
Qib	Qib 1 CR
Cov chav kawm	11, 12, 21, 22
Sab nraud txoj kab uas hla	1/2 "- 48" (DN15-DN1200); loj dua ntawm kev thov
Phab ntsa thickness	SCH 10 to SCH 160/XXS
Ntev	Ib qho random, ob chav random, tsau 5.8 m / 6 m / 12 m
Xaus	Plain, bevelled, los yog threaded nrog couplings
Sib npaug phaj qib	ASTM A387 Gr 12, EN 10028-2 13CrMo4-5, DIN 17175 13CrMo44

 

A691 Qib 1Cr Tshuaj Ntsuam Xyuas:

Lub npe	C	Mn	P	S	Si	Cr	Mo
ASTM A 691 1Cr	0.05-0.17	0.40- 0.65	Tsawg dua lossis sib npaug li 0.035	Tsawg dua lossis sib npaug li 0.035	0.15–0.40	0.80–1.15	0.45-0.65

 

A691 Qib 1Cr Lub cev muaj zog:

Lub npe	Tensile zog Ksi [MPa]	Yield zog, min Ksi [MPa]	Elongation hauv 8 nti. [200mm], min %
ASTM A691 Qib 1 Cr	65 - 85ksi [450 - 585MPa]	40 ksi [275 MPa]	22

 

 

Vim li cas 1Cr-0.5Mo?

Chromium tsim ib txheej oxide ruaj khov uas ua rau qeeb qeeb ntawm qhov kub uas cov hlau yuav oxidize sai. Molybdenum ntxiv lub zog ntawm cov kub thiab txhim kho kev nkag siab, yog li cov yeeb nkab ua kom nws cov duab nyob rau hauv ntev - lub sij hawm thauj khoom siab tshaj cov pa roj carbon - hlau txwv. Ua ke lawv ua rau Qib 1 CR qhov kev xaiv zoo rau cov kav dej siab thiab boiler circuits ua haujlwm siab tshaj li 400 degree, tab sis hauv qab qhov ntau uas koj yuav nce mus txog 2.25Cr-1Mo lossis 9Cr-1Mo.

 

Tej kev siv

Fais fab nroj tsuag boiler thiab superheater piping

Refinery catalytic transformer thiab hydrotreater kab

Petrochemical rhaub tubes thiab hloov kab

Kub exchanger plhaub thiab channel npog

High -kub txheej txheem piping hauv tshuaj nroj tsuag

Chav faib headers

 

Kev kuaj thiab tshuaj xyuas

ASTM A691 yeeb nkab raug kuaj kom phim cov kev pabcuam nws yuav pom. Standard xeem muaj xws li:

Tshuaj ntsuam xyuas ntawm lub hauv paus phaj

Chav - ntsuas kub tensile

Transverse coj-kev sim khoov ntawm qhov vuam

Radiographic los yog ultrasonic kuaj ntawm vuam (yuav tsum tau rau tej chav kawm)

Hydrostatic test los ua pov thawj kom nruj

Optional Charpy impact testing for low -temperature service

Thaum cov yeeb nkab nkag mus rau hauv lub siab- lub nkoj lossis lub zog- txoj haujlwm cog qoob loo, xyuas kom cov ntawv pov thawj kuaj pom cov chav kawm A691 thiab qhov kev ntsuam xyuas weld haum rau cov chav kawm.

 

A691 Alloy Steel Yeeb Nkab Hoobkas

Hu rau tam sim no rau A691 welded yeeb nkab

 

FAQ

Q: CR sawv cev rau qib 1 CR li cas?

A: CR stands rau Chromium. Qib 1 CR yog qib 1Cr-0.5Mo ua los ntawm A387 Qib 12 phaj.

 

Q: Puas yog Qib 1 CR zoo ib yam li Qib 9 CR?

A: Tsis yog. Qib 1 CR muaj li ntawm 1% chromium; Qib 9 CR muaj li ntawm 9% chromium thiab siv A387 Qib 9 phaj. Lawv yog cov sib txawv alloy cov chav kawm thiab tsis interchangeable.

 

Q: Qhov twg A691 chav kawm kuv yuav tsum xaj?

A: Chav 11/12 sib haum rau A387 Qib 12 Chav Kawm 1; Chav kawm 21/22 sib haum rau Chav Kawm 2 thiab muaj zog dua. Koj lub siab- lub nkoj lossis cov kav dej ib txwm qhia cov chav kawm.

 

Q: Qib 1 CR ua haujlwm li cas?

A: Nws yog feem ntau siv txog li 540-565 degree, nyob ntawm qhov tsim kev ntxhov siab thiab cov cai siv tau. Tshaj li qhov ntau koj feem ntau txav mus rau qib siab dua Cr-Mo.

 

Q: Lub sij hawm xa tuaj yog dab tsi?

A: Normalized thiab tempered lossis annealed, nyob ntawm chav kawm A691 xaj.

 

Q: Koj cov khoom loj npaum li cas?

A: Feem ntau cov Tshuag npog NPS 1/2 "rau 48" (DN15-DN1200), teem caij los ntawm SCH 10 txog XXS. Cov kab loj dua thiab cov phab ntsa hnyav dua yog ua kom xaj.

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