1. Cov khoom siv kho tshuab ntawm cov hlau stainless
Yuav tsum muaj neeg kho tshuab cov khoom yog ib txwm muab hauv kev yuav cov lus qhia tshwj xeeb rau cov hlau stainless. Yam tsawg kawg cov khoom siv neeg kho tshuab kuj tseem tau muab los ntawm cov qauv muaj feem xyuam rau cov khoom siv thiab cov khoom lag luam. Ntsib cov txheej txheem txheem cov khoom siv no qhia tau tias cov khoom siv tau tsim los tsim cov txheej txheem tsim nyog. Cov kws ua engineers tuaj yeem muab kev ntseeg siab thov kom siv cov khoom hauv cov qauv uas tau sib ntsib kev nyab xeeb ua haujlwm ntawm kev ua haujlwm thauj thiab ntsuas.
Cov khoom siv neeg kho tshuab tau teev tseg rau cov khoom pua uas muaj zog tensile muaj zog, tawm tsam kev ntxhov siab (lossis kev ntxhov siab thiab brongwell hardness. Cov khoom yuav tsum rau bar, raj, yeeb nkab thiab fittings feem ntau lub zog lub zog thiab tawm tsam kev ntxhov siab.
2. Sawv cev lub zog ntawm stainless hlau
Tsis zoo li cov hlau me me, lub zog muaj zog ntawm annealed Austenitic stainless hlau yog lub zog qis heev ntawm lub zog tensile. Cov hlau me me tawm lub zog yog feem ntau yog 65-70% ntawm lub zog tensile. Daim duab no zoo li tsuas yog 40-45% nyob rau hauv cov avustenitic stainless tsev neeg.
Mob khaub thuas ua haujlwm sai thiab zoo nce ntxiv cov txiaj ntsig lub zog. Qee hom ntawm stainless hlau, zoo li lub caij nplooj ntoo hlav txias, tuaj yeem ua haujlwm txias kom nqa lub zog los rau 80-95% ntawm lub zog tensile.
3. Qiv ntawm cov hlau stainless
Kev sib xyaw ua ke ntawm cov siab ua haujlwm hnyav thiab muaj kev loj hlob / ductility ua rau stainless hlau yooj yim heev rau fabricate. Nrog cov khoom ntiag tug sib xyaw ua ke, stainless hlau tuaj yeem ua rau muaj kev cuam tshuam loj heev hauv kev ua haujlwm zoo li kev kos duab sib sib sib zog nqus.
Lub zog yog ib txwm ntsuas raws li kev txheeb xyuas% ua ntej kev sim ua ntu zus thaum lub sij hawm kuaj. Annealed Austenitic stainless hlau muaj tshwj xeeb elongations. Cov nuj nqis yog 60-70%.
4. Hardness ntawm stainless hlau
Hardness yog qhov tsis kam mus rau kev nkag mus ntawm cov khoom saum npoo. Cov tub rog Hardness ntsuas qhov tob uas nyuaj indenter tuaj yeem thawb mus rau saum npoo ntawm cov khoom. Brinell, rockwell thiab vickers machine siv. Txhua ntawm cov no muaj cov qauv sib txawv thiab cov qauv ntawm kev thov lub zog quab yuam. Kev hloov pauv ntawm cov nplai sib txawv yog vim li no tsuas yog kwv yees.
Martensitic thiab nag ntsis los nag qib yuav ua tau tawv los ntawm kev kho cua sov. Lwm qib yuav tuaj yeem ua haujlwm txias.
5. Lub zog tensile ntawm stainless hlau
Lub zog tensile feem ntau tsuas yog cov cuab yeej siv rau cov khoom siv tau los txhais cov khoom lag luam bar thiab cov khoom hlau. Cov khoom siv zoo ib yam yuav siv tau ntawm ntau qhov chaw ua kom muaj zog rau kev sib txawv. Cov khoom siv tensile lub zog ntawm bar thiab hlau cov khoom ncaj qha cuam tshuam nrog kev siv zaum kawg tom qab kev siv hluav taws xob.
Caij nplooj ntoos hlav hlau nyhav kom muaj lub zog tshaj plaws hauv lub zog tom qab cov kab. Lub zog siab yog muab los ntawm kev ua haujlwm txias ua coiled springs. Yog tsis muaj lub zog loj no lub zog hlau yuav tsis ua haujlwm zoo raws li lub caij nplooj ntoo hlav.
Xws li lub zog siab tshaj plaws tsis tas yuav tsum tau rau cov hlau siv hauv kev sib sau lossis tab tom hlab. Hlau los yog bar siv los ua cov khoom siv rau lub ntsej muag, zoo li cov ntsia hlau thiab cov ntsia hlau, yuav tsum tau tsim kom muaj tab sis tseem muaj zog txaus los ua kev pabcuam.
Cov tsev neeg sib txawv ntawm cov hlau stainless zoo li muaj lub kaum tensile sib txawv thiab tawm kom muaj zog. Cov no siv zog tau rau annealed cov ntaub ntawv tau teev hauv Table 1.
Rooj 1. Lub zog zoo rau annealed stainless hlau los ntawm cov tsev neeg sib txawv
| Lub zog tensile | Paib lub zog | |
| AUSTENITIC | 600 | 250 |
| Duplex | 700 | 450 |
| Ferritic | 500 | 280 |
| Tus ntaus rog | 650 | 350 |
| Nag lossis daus tawv tawv | 1100 | 1000 |
6. Lub cev cov khoom ntawm stainless hlau
● Cov corrosion
● Cov cua kub siab thiab qis dua
● Yooj yim ntawm kev fabrication
● Muaj zog siab
● Kev thov kom zoo nkauj
● Kev tu cev thiab yooj yim ntawm kev tu
● Lub neej ntev lub neej
● Siv rov tau
● Tsawg sib nqus permeability
7. Corrosion tsis kam ntawm cov hlau stainless
Zoo corrosion tsis kam yog ib qho tshwj xeeb ntawm txhua tus hlau tsis muaj. Tsawg alloff qeb tuaj yeem tiv taus corrosion nyob rau hauv ib txwm muaj. Ntau dua Alloys tiv thaiv corrosion los ntawm cov feem ntau cov kua qaub, alkaline cov kev daws teeb meem thiab chloride ib puag ncig.
Lub corrosion tsis kam ntawm stainless hlau yog vim lawv cov ntsiab lus chromium. Feem ntau, stainless hlau muaj qhov tsawg kawg nkaus ntawm ib ncig ntawm 10.5% chromium. Lub chromium hauv cov ntaub ntawv alloy ua rau nws tus kheej kho cov roj oxide uas tau ua rau huab cua. Tus kheej kho qhov ntawm Oxide txheej txhais tau tias cov xeb tsis kam ua haujlwm tseem muaj kev tsis hais txog fabrication txoj kev. Txawm hais tias cov khoom tog yog txiav lossis puas, nws yuav kho tus kheej thiab corrosion tsis zoo yuav raug tswj xyuas.
8. Kev kub siab heev
Qee lub stainless hlau qib tuaj yeem tawm tsam ntsuas thiab khaws lub zog siab ntawm qhov kub heev. Lwm qib kawm kom muaj cov khoom siv muaj cov neeg kho tshuab ntawm cryogenic kub.
Siab zog ntawm stainless hlau
Cov qauv tsim thiab cov qauv kev tsim kho hluav taws xob tuaj yeem hloov kho kom tau txais txiaj ntsig ntawm cov hlau ua haujlwm uas tsis muaj zog thaum lawv txias. Cov txiaj ntsig siab muaj peev xwm tuaj yeem tso cai siv cov khoom siv thinner, ua rau hnyav dua thiab cov nqi.
Jindalai Steel Group yog ib qho chaw tsim khoom & cov khoom lag luam ntawm cov hlau stainless hlau chev roj / ntawv / tawv / strip / yeeb nkab. Kev paub ntau tshaj 20 xyoo ntawm kev txhim kho thoob ntiaj teb kev lag luam thiab tam sim no muaj lub peev xwm 2,000 tons lawm. Yog tias koj xav tau cov ntaub ntawv ntau ntxiv txog cov ntaub ntawv hlau stainless, txais tos hu rau peb hnub no lossis thov cov lus hais.
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Lub Sijhawm Post: Dec-19-2022