Kev piav qhia dav dav
SA612/SA612Myog ib tug tua carbon-manganese-silicon (C-Mn-Si) steel phaj tsim rau welded siab hlab ntsha khiav hauj lwm ntawm nruab nrab thiab qis kub.
Nws yog dav siv rau lub tank kheej kheej, tso tsheb hlau luam, thiab siab- khaws cov khoom siv hauv kev lag luam xws li roj av, tshuaj ua haujlwm, tsim hluav taws xob, boilers, metallurgy, thiab lub nroog gas systems.
Kev piav qhia
Lub npe SA612 / SA612M muaj cov ntsiab lus hauv qab no:
"SA": ASME siab nkoj steel phaj
"612": Qhia txog qib zog uas tau teev tseg hauv tus qauv
"M": Metric version ntawm lub nkoj siab phaj specification
Cov qauv siv tau thiab cov kev xav tau zoo
1 Cov qauv
SA612 / SA612M steel phaj yog ua raws li:
ASME SA612 / SA612M
ASTM A612/A612M
2 Dimensions, Shape, thiab Tolerances
Phaj qhov ntev, cov duab, zoo li, thiab tso cai kam rau ua raws li SA-20M
Thickness kam rau ua: 0 / +1.10 mm
3 Nto Zoo
Nto zoo yuav tsum tau raws li qhov yuav tsum tau ntawm SA20 / SA20M
Weld kho ntawm lub phaj nto yog tsis tso cai
Kev kuaj ultrasonic (UT)
Kev tshuaj xyuas ultrasonic tuaj yeem ua raws li:
ASTM A578 Qib A
ASTM A578 Qib B
ASTM A578 Qib C
UT tus qauv thiab qib kev lees paub yuav tsum tau teev meej meej hauv daim ntawv cog lus yuav khoom.
Kev Xa Khoom
Raws li cov neeg siv yuav tsum tau, SA612 / SA612M steel daim hlau yuav muab tau raws li hauv qab no:
Kub dov
Li qub
Tempered
Normalized + tempered
1 Tswj Rolling
Tswj dov yog ua tiav los ntawm optimizing:
Tshuaj muaj pes tsawg leeg
Kub kub
Rolling kub
Lub sij hawm deformation
Cov txheej txheem no refines lub austenite grain qauv thiab txhim kho lub zog thiab toughness.
2 normalizing
Cov hlau phaj yog rhuab saum toj no qhov kev hloov pauv kub thiab ces txias hauv huab cua mus rau:
Refine grain qauv
Txhim kho toughness
Txhim kho cov cuab yeej cuab tam uniformity
3 Tempering
Tom qab quenching, cov hlau yog reheated hauv qab quenching kub thiab txias rau:
Txo hardness me ntsis
Tseem ceeb txhim kho toughness
Stabilize microstructure
Qhov Loj
Thickness: 8-220 hli
Dav: 1,000 - 3,500 mm
Ntev: 4,000 - 17,000 mm
Chemical Composition (wt.%)
| Element | Cov ntsiab lus |
|---|---|
| C | Tsawg dua lossis sib npaug li 0.25 |
| Mn | 1.00 – 1.50 |
| P | Tsawg dua lossis sib npaug li 0.03 |
| S | Tsawg dua lossis sib npaug li 0.02 |
| Si | 0.15 – 0.50 |
| Cu | Tsawg dua los yog sib npaug li 0.35 |
| Ni | Tsawg dua lossis sib npaug li 0.25 |
| Cr | Tsawg dua lossis sib npaug li 0.25 |
| Mo | Tsawg dua lossis sib npaug li 0.08 |
| V | Tsawg dua lossis sib npaug li 0.08 |
| Nb | Tsawg dua lossis sib npaug li 0.02 * |
| Ti | Tsawg dua lossis sib npaug li 0.03 |
| Al | Ntau dua lossis sib npaug rau 0.020 |
* Nb cov ntsiab lus yuav raug nce mus rau tsawg dua lossis sib npaug li 0.05% (kev ntsuas cua sov) thiab Tsawg dua lossis sib npaug rau 0.06% (kev tshuaj xyuas khoom).
Mechanical Properties
| Khoom | Tsawg dua los yog sib npaug li 12.5 mm | 12.5-25 hli |
|---|---|---|
| Tensile zog (MPa) | 570 – 725 | 560 – 695 |
| Yield zog (MPa) | Ntau dua lossis sib npaug rau 345 | Ntau dua lossis sib npaug rau 345 |
| Elongation (200 hli),% | Ntau dua lossis sib npaug li 16 | Ntau dua lossis sib npaug li 16 |
| Elongation (50 hli),% | Ntau dua lossis sib npaug 22 | Ntau dua lossis sib npaug 22 |
| Charpy V-ntsis cuam tshuam (–40 degree, Transverse) | Avg Ntau dua lossis sib npaug rau 27 J | Avg Ntau dua lossis sib npaug rau 27 J |
Nco tseg: Qhov tseem ceeb elongation nyob ntawm seb qhov ntev ntawm qhov ntsuas tau xaiv; ib zaug ib lub ntsuas qhov ntev raug xaiv, lwm qhov tsis siv.
Kev tsim khoom thiab txiav txheej txheem
1 Cov txheej txheem tsim khoom
Thawj steelmaking → LF refining → VD lub tshuab nqus tsev degassing → Nruam casting (los yog ingot casting) → Nto tu → Cua sov thiab dov → Kev tshuaj xyuas nto → Batch ultrasonic kuaj → Thaum tshav kub kub kho → Txiav thiab sampling → Mechanical test → Warehousing
2 Txoj kev txiav
SA612 / SA612M steel daim hlau tuaj yeem ua tiav siv:
nplaim taws txiav
Plasma txiav
Laser txiav
Txiav
Hlau txiav
Ultra-siab- lub dav hlau dej siab txiav
Nplaim taws txiav yog txoj kev pheej yig tshaj plaws thiab siv tau zoo rau cov phaj tuab, thaum plasma lossis laser txiav yog nyiam rau cov phaj nyias.
3 Txiav txheej txheem xaiv
Phaj thickness Tsawg dua lossis sib npaug li 20 hli: CNC ntshav lossis CNC laser txiav nyiam dua
Phaj tuab Ntau dua lossis sib npaug li 30 hli: CNC nplaim txiav pom zoo rau kev ua haujlwm zoo dua thiab tswj tus nqi
1. Dab tsi yog SA612 steel phaj?
SA612 steel phaj yog ib tug tua carbon-manganese-silicon (C-Mn-Si) siab hlab ntsha hlau ua raws li ASME SA612 / SA612M thiab ASTM A612 / A612M cov qauv.
Nws yog tsim rau welded siab hlab ntsha ua hauj lwm nyob rau hauv nruab nrab thiab qis kub, yuav tsum tau muaj zog thiab txhim khu kev qha toughness.
2. Dab tsi yog qhov kev thov kub ntawm SA612?
SA612 steel phaj yog haum rau nruab nrab thiab qis - qhov kev pab cuam kub, thiab kev ntsuam xyuas feem ntau ua ntawm -40℃.
Qhov no ua rau SA612 tsim nyog rau cov hlab ntsha siab raug:
Lub caij ntuj sov kub
Pib- nce thiab kaw qhov cua sov caij tsheb kauj vab
Nruab nrab-siab, tsis yog{1}}cryogenic ib puag ncig
3. Dab tsi yog qhov tuab ntawm SA612 steel phaj?
Raws li ASTM A612 / A612M thiab ASME SA612 / SA612M:
Txheem siab tshaj plaws thickness: tsawg dua los yog sib npaug li 25 hli (1 nti)
Hauv kev tsim khoom, SA612 daim hlau tuaj yeem muab rau hauv:
Thickness ntau: 8-120mm (raws li kev pom zoo)
| Lwm cov hlau phaj los ntawm GNEE | ||||
| Lub npe | Khoom siv | Specification (hli) | Tos | Lus ceeb toom |
| Clad steel phaj | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm (raws li phaj), 1-50mm (Composited phaj) | / | UT, AR, TMCP.Normalized, Quenched thiab Tempered, Z Direction Test, Charpy V-Ntch impact TestThe Third Party Test, Coated or Shot Blasting and Painting. |
| Tsawg Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SAG281G, SAG281G SA387Gr22, P265, P295, P355GH, Q245R(R-HIC), Q345R(R{30}}HIC) | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| High-Plate muaj zog | WH785D/E,Q960D/E,Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav-Resistant Phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Choj Phaj | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | ||
