1, tsis tshua muaj alloy siab zog steel qauv

Siv nyob rau hauv cov tsev, Choj, nkoj, tsheb, lub nkoj siab thiab lwm yam qauv, cov ntsiab lus carbon (melting tsom xam) feem ntau tsis ntau tshaj 0.20%, tag nrho cov ntsiab lus alloying feem ntau tsis ntau tshaj 2.5%, lub zog tawm los tsis tsawg. tshaj 295MPa, muaj kev cuam tshuam zoo toughness thiab vuam cov khoom ntawm cov hlau tsis tshua muaj hlau.

2, carbon steel qauv

Cov pa roj carbon steel siv nyob rau hauv cov tsev, Choj, nkoj, tsheb thiab lwm yam qauv, uas yuav tsum muaj ib tug tej yam lub zog, tej yam ntuj tso khoom thiab vuam khoom thaum tsim nyog.

3. Hlau rau cov qauv tsim

Hlau siv hauv kev tsim cov tsev siab thiab cov qauv tseem ceeb.Nws yuav tsum muaj kev cuam tshuam loj heev, lub zog txaus, kev ua haujlwm zoo vuam, ib qho kev sib piv ntawm lub zog flexural, thiab kev ua haujlwm thickness thaum tsim nyog.

4. Hlau rau Choj

Hlau siv nyob rau hauv lub tsev railway thiab txoj kev loj choj.Nws yuav tsum muaj lub zog siab thiab txaus toughness, tsis tshua muaj siab rhiab heev, tsis tshua muaj kub toughness, laus rhiab heev, qaug zog tsis kam thiab vuam kev ua tau zoo.Lub ntsiab steel yog Q345q, Q370q, Q420q thiab lwm yam uas tsis muaj alloy siab zog steel.

5. Hnyav hlau

Kev vuam zoo thiab lwm yam khoom, tsim nyog rau kev kho lub ntsiab qauv ntawm lub nkoj thiab nkoj hull steel.Lub nkoj steel yuav tsum muaj lub zog ntau dua, zoo dua toughness, khob tsis kam thiab dej sib sib zog nqus.

6. Hlau rau cov hlab ntsha siab

Hlau siv nyob rau hauv kev tsim cov hlab ntsha siab rau petrochemical, roj sib cais thiab roj cia thiab cov khoom siv thauj mus los.Nws yuav tsum muaj zog txaus thiab toughness, zoo vuam kev ua tau zoo thiab txias thiab kub ua muaj peev xwm.Cov hlau feem ntau siv yog cov hlau tsis tshua muaj siab zog steel thiab carbon steel.

7, tsis tshua muaj steel hlau

Rau kev tsim cov cuab yeej siv siab thiab cov qauv siv hauv qab -20 ℃, cov hlau tsis muaj qhov kub thiab txias thiab cov khoom siv vuam yuav tsum tau ua.Raws li qhov sib txawv ntawm qhov kub thiab txias, cov hlau tseem ceeb yog cov hlau tsis tshua muaj siab zog hlau, npib tsib xee hlau thiab austenitic stainless hlau.

8, boiler hlau

Hlau siv nyob rau hauv kev tsim cov superheater, lub ntsiab chav yeeb nkab, dej phab ntsa yeeb nkab thiab boiler nruas.Nws yuav tsum muaj cov cuab yeej zoo ntawm chav tsev kub thiab kub, oxidation thiab alkaline corrosion kuj, muaj zog ruaj khov thiab ruaj khov elasticity.Lub ntsiab steel yog pearlite kub resistant steel (chromium-molybdenum steel), austenitic tshav kub resistant steel (chromium-nickel steel), zoo carbon steel (20 steel) thiab tsawg alloy siab zog steel.

9. Cov yeeb nkab steel

Hlau rau cov roj thiab cov roj ntuj ntev lub sijhawm sib cais cov yeeb nkab kab.Nws yog cov hlau tsis tshua muaj siab zog steel nrog lub zog siab, siab toughness, zoo heev machinability, weldability thiab corrosion kuj.

10, ultra siab zog steel yield zog thiab tensile zog ntawm ntau tshaj 1200MPa thiab 1400MPa feem.Nws cov yam ntxwv tseem ceeb yog lub zog siab heev, muaj zog txaus, tuaj yeem tiv taus ntau qhov kev ntxhov siab, tib lub sijhawm muaj ntau lub zog tshwj xeeb, kom cov qauv ntau npaum li qhov ua tau kom txo qhov hnyav.

11. Piv nrog cov pa roj carbon monoxide zoo tib yam, cov pa roj carbon zoo steel muaj cov ntsiab lus qis ntawm sulfur, phosphorus thiab non-metallic inclusions.Raws li cov ntsiab lus carbon thiab kev siv sib txawv, nws tau muab faib ua cov pa roj carbon tsawg, cov pa roj carbon nruab nrab thiab cov pa roj carbon siab, thiab lwm yam, feem ntau yog siv rau kev tsim cov khoom siv thiab cov khoom siv.

12. Alloy qauv hlau

Nyob rau hauv lub hauv paus ntawm carbon structural steel nrog tsim nyog alloying ntsiab, nws yog tsuas yog siv los tsim cov hlau ntawm mechanical qhov chaw nrog cov seem loj.Nws muaj qhov tsim nyog hardenability, muaj zog dua, toughness thiab qaug zog lub zog thiab txo qis kev hloov pauv kub tom qab kev kho cua sov.Hom hlau no feem ntau suav nrog hardening thiab tempering steel, nto hardening steel thiab txias yas sib sau steel.

13. Thaum tshav kub kub-resistant steel

Alloy steel nrog lub zog siab thiab tshuaj lom neeg ruaj khov ntawm qhov kub thiab txias.Xws li oxidation - resistant steel (los yog hu ua tshav kub - resistant steel) thiab kub - muaj zog steel ob pawg.Oxidation resistant steel feem ntau xav tau kev ruaj ntseg zoo dua, tab sis bears qis dua.Thermal zog steel yuav tsum tau kub lub zog thiab oxidation tsis kam.

14, huab cua steel (atmospheric corrosion resistant steel)

Ntxiv tooj liab, phosphorus, chromium, nickel thiab lwm yam khoom los txhim kho atmospheric corrosion kuj ntawm hlau.Hom hlau no tau muab faib ua cov huab cua siab steels thiab vuam qauv weathering steels.