2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Kev siv cov hlau tau ntev tau siv dav hauv peb lub neej thiab tsis muaj leej twg tsis ntseeg nws qhov kev tsim nyog. Txawm li cas los xij, peb yuav tsum tsis txhob hnov qab tias steels txawv. Niaj hnub no, ntau hom khoom siv no txawv:
- Structural steel.
- Tshooj steel.
- Kev cai-lub hom phiaj steel nrog cov khoom tshwj xeeb.
Cia peb tham hnub no txog cov qauv hlau. Qhov no yog lub npe ntawm txhua yam uas tau siv rau hauv kev tsim cov qauv tsim, nrog rau qhov chaw ntawm cov tshuab thiab cov tshuab.
Cov khoom siv
Cov qauv hlau tau muab faib ua ob pawg loj:
- Quality structural alloy.
- Quality structural carbon steel.
Tag nrho cov hom no yog siv rau hauv ib cheeb tsam ntawm kev tsim khoom, ua cov haujlwm uas tau muab rau lawv.
Cov qauv hlau alloys
Ntau zaus, ntau lub ntsiab lus tau ntxiv rau cov hlau los txhim kho thev naus laus zis, physico-chemical, lub zog muaj zog,
uas yog, dope nws. Yeej, rau cov hom phiaj no yog sivchrome, npib tsib xee, manganese. Cov qauv zoo steels yuav muaj ib lossis ntau dua ntawm cov ntsiab lus no. Hauv qhov no, sawv tawm:
- Low-alloyed (tus naj npawb ntawm additives tsis ntau tshaj 2.5%).
- Medium-alloyed (tus duab tuaj yeem nce mus txog 10%).
- Highly alloyed (ntau dua 10% ntawm cov khoom ntxiv).
Yuav kom nkag siab tias cov khoom siv ntxiv ua haujlwm li cas, koj yuav tsum nkag siab txog qhov muaj pes tsawg leeg ntawm cov khoom. Nws yog raws li ferrite (kwv yees li 90% ntawm qhov ntim). Alloying ntsiab yog yaj nyob rau hauv ferrite, yog li ua kom nws lub zog. Silicon, nickel thiab manganese yog tshwj xeeb tshaj yog zoo nyob rau hauv no hais txog. Tab sis chromium, tungsten thiab molybdenum muaj cov nyhuv tsis muaj zog.
Nws yuav tsum tau muab sau tseg tias alloyed structural steel yog characterized los ntawm tsawg weldability. Qhov no yog vim lub hardening ntawm ze-weld cheeb tsam thiab tsim ntawm brittle lug nyob rau hauv nws muaj pes tsawg leeg. Yog li ntawd, cov thev naus laus zis tshwj xeeb yog siv rau hauv cov txheej txheem vuam, tsim ib tus zuj zus rau hom hlau no.
Steel low-alloy tsim yog dav siv rau kev tsim cov locomotives, wagons, ua liaj ua teb machinery. Tag nrho cov khoom no yog qhov txawv los ntawm lawv lub peev xwm los tiv thaiv cov khoom sib txawv. Weldability parameters ntawm cov hlau no tsis muaj kev txwv.
High-alloy steel yog siv los tsim cov turbine hniav thiab rotors, reactors, chav kav thiab headers.
qauv carbon steel
Qhov thib ob kuj nthuav tawmntau yam, xws li:
- Engineering. Cov qauv hlau ntawm hom no yog siv los tsim cov tsheb.
- Automatic. Nws yog los ntawm cov hlau no uas muaj ntau yam fasteners tau ua. Nws tsis yog qhov tsim nyog rau vuam, txhua qhov chaw yog machined.
- chav boiler. Indispensable thaum nws los txog rau kev tsim cov boilers thiab cov hlab ntsha uas yuav tsum tau tiv taus kub. Cov hlau no tau zoo weldability.
Cov qauv hlau yog cov khoom siv yam tsis muaj kev tsim khoom ntawm qee yam qauv thiab qhov chaw ua tsis tau.
Pom zoo:
Muag cov nuj nqis rau cov neeg sau. Daim ntawv cog lus rau kev muag cov nuj nqis ntawm cov koom haum raug cai thiab cov tib neeg los ntawm cov tsev txhab nyiaj rau cov neeg sau: qauv
Yog tias koj txaus siab rau lub ntsiab lus no, feem ntau koj yuav dhau qhov qiv nyiaj thiab tib yam tshwm sim rau koj ib yam li nrog cov nuj nqis feem ntau - muag ntawm cov nuj nqis. Ua ntej tshaj plaws, qhov no txhais tau hais tias thaum thov qiv nyiaj, koj, sim coj cov nyiaj hauv koj txhais tes kom sai li sai tau, tsis xav txog nws yuav tsum ua tib zoo kawm daim ntawv cog lus
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Cov lus hais txog qib ntawm cov zaub mov qib stainless hlau. Nyeem yuav ua li cas paub qhov txawv cov zaub mov stainless hlau los ntawm kev
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