Khoom Description
Nyob rau hauv lub tshav pob ntawm cov roj cia thiab kev thauj mus los, huab cua siab txhais tau hais tias muaj kev ruaj ntseg ntau dua thiab cov khoom siv nruj dua. HP345, siab -lub zog tshwj xeeb steel tsim tshwj xeeb rau siab - siab welded gas cylinders, ua tiav qhov sib npaug zoo ntawm lub zog siab thiab siab tawv los ntawm kev tsim cov qauv tsim, kev tswj cov txheej txheem siab heev, thiab kev ua haujlwm zoo sib xws, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau nruab nrab - thiab siab - 6 cylindrical.
HP345 Kub Rolled Steel Pate Coils rau Welded Gas Lub tog raj kheej
HP345 is a high-pressure grade welded cylinder steel conforming to GB 6653-2008 "Steel Plates and Strips for Welded Gas Cylinders". With a yield strength of ≥345 MPa and a tensile strength of ≥510 MPa as its core indicators, it is specifically designed for medium- and high-pressure gas cylinders with working pressures >3.0MPa siab. Nws ua tiav cov nplej ua kom zoo thiab txhim kho lub zog los ntawm microalloying thiab tswj dov thiab txias (TMCP) thaum tuav cov formability zoo thiab weldability, ua tiav lub hom phiaj engineering ntawm "siab zog yam tsis muaj kev nyab xeeb".
Khoom Description
| Yam khoom | Txuj Kev Cai | Tus nqi | Core tseem ceeb |
|---|---|---|---|
| Yield zog (σₛ) | Ntau dua lossis sib npaug li 345 MPa | 360-400 MPa | Resistant yas deformation thiab txiav txim siab yam tsawg kawg nkaus phab ntsa thickness |
| Tensile zog (sᵦ) | Ntau dua lossis sib npaug li 510 MPa | 530-600 MPa | Muab burst Safety margin |
| Elongation (δ₅) | Ntau dua lossis sib npaug li 20% | 22–26% | Xyuas kom sib sib zog nqus nqus thiab dov formability |
| 180℃Txias Khoov | d=2a | Tsis muaj kab nrib pleb | Txheeb xyuas qhov formability thiab toughness |
| Impact Zog (Akv) | Ntau dua lossis sib npaug li 27 J | 35–45 J | Ua kom muaj kev nyab xeeb nyob rau hauv qis kub thiab dynamic load |
| Yield Ratio | Tsawg dua lossis sib npaug li 0.80 | 0.72–0.76 | Sib npaug lub zog thiab ductility los tiv thaiv brittle puas |
Yuav ua li cas kom tau txais "High Strength + High Toughness"?
1. Chemical Composition Design (Mass Fraction, %)
Ib tug optimized system ntawmlow-carbon manganese-raws li + trace vanadium thiab titaniumyog saws los tswj cov impurities nruj me ntsis thaum ua kom muaj zog:
|
Element |
C |
Si |
Mn |
P |
S |
Als |
V |
Ti |
|---|---|---|---|---|---|---|---|---|
|
Standard Upper Limit |
Tsawg dua los yog sib npaug li 0.20 |
Tsawg dua los yog sib npaug li 0.35 |
Tsawg dua lossis sib npaug li 1.50 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Ntau dua lossis sib npaug rau 0.015 |
Tsawg dua lossis sib npaug li 0.025 |
Tsawg dua lossis sib npaug li 0.025 |
|
Hom Kev Tswj |
0.14–0.18 |
0.20–0.30 |
1.30–1.45 |
Tsawg dua los yog sib npaug rau 0.018 |
Tsawg dua lossis sib npaug li 0.003 |
0.030–0.040 |
0.010–0.020 |
0.005–0.015 |
Tsawg-Carbon Design: C Tsawg dua lossis sib npaug li 0.20% txo qis qhov nyiam ntawm cov kab nrib pleb thiab ua kom muaj kev ntseeg tau ntawm vuam.
Manganese thiab Microalloy: Mn txhim kho lub zog; V thiab Ti refine cov nplej thiab ua kom muaj zog tawg thaum tuav cov yas zoo.
Ultra-Low Impurities: nruj me ntsis tswj P thiab S mus rau kev lag luam qib qis, txhim kho purity thiab qis-kub toughness.
Advanced Process Control (TMCP)
Kev ua tau zoo leap yog tiav los ntawmhuv steel smelting + tswj dov thiab tswj cua txias:
- Smelting: KR desulfurization → converter smelting → LF/RH refining kom ua tiav ultra- tsis tshua muaj cov ntsiab lus thiab roj.
- Rolling: Uniform siab - kub cua sov → siab - siab dej descaling → kev sib koom ua ke deformation ntawm ntxhib thiab tiav dov → ncej- theem txias kom txo tau qhov yield piv rau qis dua 0.76.
- Structure: Tau txais cov qauv ferrite + pearlite qauv nrog cov nplej ua kom zoo rau qib 7-9, ua tiav qhov zoo sib xws ntawm lub zog thiab tawv.
Qhov tseem ceeb ntawm kev ua haujlwm tau lees paub nyob rau hauv siab heev
Lub zog thiab kev nyab xeeb Margin
Tsim nyog Yield Strength: Ntau dua los yog sib npaug rau 345 MPa, uas tuaj yeem txo cov phab ntsa tuab raws li qhov kev nyab xeeb zoo ib yam, paub txog lub teeb yuag thiab tus nqi optimization ntawm lub tog raj kheej roj.
High Tensile Strength: Ntau dua los yog sib npaug rau 510 MPa, ua ke nrog cov dej ntsuas ntsuas siab ntawm Ntau dua lossis sib npaug rau 1.5 npaug (piv txwv li, 4.5 MPa), muab kev nyab xeeb tawg txaus.
Tsawg Yield Ratio: Tswj ntawm 0.72–0.76, zam kev tawg sai sai nyob rau hauv kev kub siab thiab ua kom muaj kev nyab xeeb ntawm "deformation ua ntej tawg".
Formability thiab Weldability
Zoo heev Formability: Elongation ntau dua los yog sib npaug li 22%, tsis muaj kab nrib pleb nyob rau hauv txias dabtsi yog khoov nrog d=2a, haum rau complex txheej txheem xws li sib sib zog nqus nqus, dov thiab caj dab, txo cov seem seem.
Txhim khu kev Weldability: Tsawg- carbon thiab qis- impurity tsim, haum rau phau ntawv arc vuam, submerged arc vuam thiab roj hlau arc vuam. Lub tshav kub- cuam tshuam cheeb tsam (HAZ) muaj qhov tawv tawv zoo, ua tau raws li qhov yuav tsum tau muaj ntawm vuam tsis yog-kev kuaj kev puas tsuaj (xws li X-ray flaw detection).
Environmental Adaptability
Kev siv dav dav dav dav: Raws li kev ua haujlwm ntawm -40℃txog 60 degree, qhov cuam tshuam lub zog yog siab dua lossis sib npaug li 27 J, zam qhov kub ntawm qhov tsis ua haujlwm.
Medium Corrosion Resistance: Txhim kho corrosion kuj rau cov xov xwm xws li kua ammonia, liquefied petroleum gas (LPG) thiab heptafluoropropane los ntawm kev muaj pes tsawg leeg thiab cov txheej txheem tswj.
HP345 Gas Lub tog raj kheej Steel
Hom Daim Ntawv Thov Scenarios
HP345 yog dav siv nyob rau hauv cov teb uas tsis tshua muaj siab xav tau rau siab thiab kev nyab xeeb:
- Industrial Gas Lub tog raj kheej: Nruab nrab-kev kub siab welded gas cylinders rau kua ammonia (ua haujlwm siab 2.5–3.0 MPa), oxygen, nitrogen, carbon dioxide, thiab lwm yam.
- Hluav taws kub-Kev sib ntaus sib tua thiab lub tog raj kheej tshwj xeeb: Heptafluoropropane hluav taws- sib ntaus sib tua lub tog raj kheej (ua haujlwm siab 4.2 MPa), tsheb- mounted natural gas (CNG) cylinders (20–30 MPa).
- Kev lag luam tshuaj thiab hluav taws xob: Siab- cov thawv ntim roj siab hauv kev lag luam petrochemical thiab lub zog tshiab khaws cia thiab kev thauj mus los, yuav tsum tau ntev - lub sijhawm ruaj khov thiab kev nyab xeeb siab.
Kev xaiv sib piv nrog lwm cov Welded Lub tog raj kheej Steels
|
Qib |
Yield zog (MPa) |
Tensile zog (MPa) |
Daim ntawv thov |
Core txawv |
|---|---|---|---|---|
|
HP 265 |
Ntau dua lossis sib npaug rau 265 |
Ntau dua lossis sib npaug rau 410 |
Lub tog raj kheej LPG hauv tsev, qis- lub tog raj kheej siab acetylene |
Tus nqi- zoo, nyiam rau qhov tsawg- cov xwm txheej siab |
|
HP 295 |
Ntau dua lossis sib npaug li 295 |
Ntau dua lossis sib npaug rau 440 |
Nruab nrab -siab, me me thiab nruab nrab- lub tog raj kheej roj muaj peev xwm |
Tus nqi sib npaug -kev ua tau zoo, qhov nruab nrab dav dav- kev xaiv siab |
|
HP 345 |
Ntau dua lossis sib npaug rau 345 |
Ntau dua lossis sib npaug rau 510 |
Nruab nrab-siab siab, loj-muaj peev xwm, siab-kev nyab xeeb yuav tsum tau muaj roj thooj voos kheej kheej |
Siab zog + siab toughness, nyiam rau huab cua siab |
|
HP 365 |
Ntau dua lossis sib npaug rau 365 |
Ntau dua lossis sib npaug li 540 |
Ultra-siab siab, lub tog raj kheej roj tshwj xeeb |
Qhov kawg lub zog, mob siab rau kev ua haujlwm hnyav |
Npaj txhij los txhawb koj cov khoom zoo? Hu rau GNEE hnub no kom tau txais cov lus qhia tus kheej thiab kev sib tham!Peb pab pawg kws tshaj lij tau sawv los los muab qhov siab -Kev ua tau zoo HP345 Lub tog raj kheej Steel koj qhov project tsim nyog.
Cov ntsiab lus
Nrog rau cov qauv tsim ntawm low-carbon manganese-raws li + microalloying thiab cov txheej txheem siab heev ntawm kev tswj dov thiab tswj kom txias, HP345 tau ua tiav kev ua tau zoo ntawm "siab zog, siab tawv, ua haujlwm yooj yim thiab kev ntseeg siab". Nws ua tau raws li qhov xav tau ntawm qhov siab tshaj plaws ntawm nruab nrab - lub tog raj kheej siab siab, ua kom pom qhov sib sib zog nqus thiab tus nqi kom zoo thaum ua kom muaj kev ruaj ntseg rov ua dua, thiab yog qhov kev xaiv zoo tshaj plaws rau kev daws qhov kub siab hauv kev cia thiab kev thauj mus los.
Post-weld kub kho qhov kub ntawm HP345 yog dab tsi?
Cov ncej-weld stress-relieving annealing kub feem ntau yog 600–645 degree, nrog rau qhov tshwj xeeb kub txiav txim raws li cov txheej txheem vuam tsim nyog.
Lub sij hawm tuav rau kev tshaj tawm -weld kub kho ntawm HP345 yog dab tsi?
Lub sijhawm tuav yog feem ntau 5-10 feeb (hloov raws li tuab). Lub sijhawm tuav yuav tsum raug ncua kom haum rau cov tuab tuab.
HP345 yuav tsum tau txias li cas tom qab xa-welding cua sov kho?
Nws yuav tsum tau maj mam txias kom txias rau chav sov hauv qhov cub. Cua txias los yog dej txias tom qab tshem tawm ntawm lub cub tawg yog nruj me ntsis txwv tsis pub, vim qhov no yuav ua rau cov thermal stress tshiab.
Dab tsi yog qhov tshwm sim ntawm qhov siab dhau heev lawm -weld kub kho kub?
Temperatures exceeding the upper limit (>650 degree) tuaj yeem ua rau cov nplej ntxhib, txo lub zog, thiab txawm tias cov txheej txheem overheated.
Dab tsi yog qhov tshwm sim ntawm kev xa ntawv tsis txaus -weld heat treatment time?
Lub sij hawm tuav tsis txaus yuav ua rau tsis txaus tshem tawm ntawm qhov seem vuam kev nyuaj siab, ua rau muaj kev pheej hmoo ntawm kev tawg qeeb
