Cov txheej txheem:

Cov hlau siv li cas hauv lub neej txhua hnub?
Cov hlau siv li cas hauv lub neej txhua hnub?

Video: Cov hlau siv li cas hauv lub neej txhua hnub?

Video: Cov hlau siv li cas hauv lub neej txhua hnub?
Video: zoo nyob tag npaum no xoom ceev2 kom phev los tso mam saib seb yog leej twg 2024, Kaum ib hlis
Anonim

Qee qhov kev siv ntawm Hlau hauv peb lub neej txhua hnub yog: Khoom noj thiab tshuaj- Hlau Hauv cov qe ntshav liab muaj hemoglobin. Hauv kev kho mob, ntau hom ntawm hlau yog siv hauv kev ua tshuaj xws li ferrous sulfate, ferrousfumarate, thiab lwm yam. Hlau yog ib qho tseem ceeb ntawm cov nroj tsuag.

Hais txog qhov no, dab tsi yog qhov tseem ceeb ntawm kev siv hlau?

Kev siv hlau

  • Nws yog siv los tsim cov hlau thiab tseem siv hauv kev tsim vaj tse xws li cov pob zeb ua kom muaj zog, girders thiab lwm yam.
  • Hlau yog siv los ua alloy steels zoo li carbon steels nrog additives xws li npib tsib xee, chromium, vanadium, tungsten, thiab manganese.

Ib sab saum toj no, dab tsi yog ua los ntawm hlau? Nov yog 10 yam uas koj siv txhua hnub uas tsis muaj hlau thiab hlau:

  • Tsheb - tsheb, tsheb thauj khoom, SUVs, semis, RVs, tsheb npav, tsheb ciav hlau.
  • Cov khoom siv - tub yees, tshuab ntxhua khaub ncaws, tshuab ntxhua khaub ncaws, qhov cub, tshuab ntxhua khaub ncaws.
  • Khoom siv - diav rawg, diav, riam thiab lwm yam.
  • Kev kho mob - phais stainless hlau, implantabledevices.

Nyob rau hauv no txoj kev, siv hlau li cas niaj hnub no?

Hlau yog ib qho enigma - nws rusts yooj yim, tsis tau itis qhov tseem ceeb tshaj plaws ntawm tag nrho cov hlau. 90% ntawm tag nrho cov hlau uas yog refined hnub no yog hlau . Feem ntau yog siv tsim steel, siv hauv engineering engineering (reinforcedconcrete, girders thiab lwm yam) thiab hauv kev tsim khoom.

Puas yog hlau ntshiab xeb?

Tiag tiag, hlau ntshiab tsis txawm xeb tag nrho ntau - nyob rau hauv sib piv rau carbon steel. Ntawm ntug qhov twg hlau thiab nws cov oxide ua tau raws li cov cementite, mechanical thiab "chemical" stress yog tsim tawm uas muaj cov ntsiab lus ntawm kev tawm tsam rau oxygen thiab dej molecules los ntawm huab cua.

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