Cov yeeb nkab hlau tsis muaj seamless rau kev tsim kho (GB/T8162-2008) yog siv rau cov qauv dav dav thiab cov qauv kho tshuab ntawm cov yeeb nkab hlau tsis sib xws.

Siv rau kev tsim cov kav hlau tsis muaj seamless rau cov kav dej, cov hlab ntsha, cov khoom siv, cov khoom siv thiab cov qauv kho tshuab

Kev Tsim Kho: qauv tsev, lub trestle hiav txwv, qauv tshav dav hlau, chaw nres nkoj, lub qhov rooj kev nyab xeeb, qhov rooj tsev rau tsheb, cov qhov rooj hlau thiab qhov rais uas muaj zog, phab ntsa faib sab hauv tsev, cov qauv choj cable thiab cov neeg saib xyuas kev ruaj ntseg ntawm txoj kev loj, cov ntaiv, kho kom zoo nkauj, cov kav dej kho kom zoo nkauj

Cov khoom siv hauv tsheb: kev tsim tsheb thiab tsheb npav, cov cuab yeej thauj mus los

Ua Liaj Ua Teb: Cov khoom siv ua liaj ua teb

Kev Lag Luam: Tshuab, Kev txhawb nqa lub hnub ci, thaj chaw roj av hauv hiav txwv, cov khoom siv khawb av, cov khoom siv kho tshuab thiab hluav taws xob, Kev tsim kho, kev khawb av, hnyav thiab cov peev txheej, Kev tsim kho txheej txheem, kev ua cov khoom siv, cov khoom siv kho tshuab

Kev Thauj Mus Los: cov ntaiv neeg taug kev, cov ntaiv thaiv, cov qauv plaub fab, cov paib, cov khoom siv kev, cov laj kab

Kev khaws cia khoom siv: cov txee loj, rooj tog, khoom siv hauv tsev kawm ntawv

Qib tseem ceeb ntawm cov yeeb nkab hlau

Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B

Qhov loj ntawm cov yeeb nkab hlau tsis muaj qhov sib txawv thiab qhov kev hloov pauv uas tso cai

Cov yeeb nkab hlau carbon (GB/8162-2008)

Cov yeeb nkab hlau no feem ntau yog smelted los ntawm converter lossis qhib qhov cub, nws cov khoom siv tseem ceeb yog hlau molten thiab hlau seem, cov ntsiab lus ntawm sulfur thiab phosphorus hauv hlau yog siab dua li ntawm cov yeeb nkab hlau carbon zoo, feem ntau sulfur ≤0.050%, phosphorus ≤0.045%. Cov ntsiab lus ntawm lwm cov khoom sib xyaw, xws li chromium, nickel thiab tooj liab, coj mus rau hauv cov hlau los ntawm cov khoom siv raw feem ntau tsis ntau tshaj 0.30%. Raws li cov khoom sib xyaw thiab kev ua tau zoo, qib ntawm cov yeeb nkab hlau no yog qhia los ntawm qib hlau Q195, Q215A, B, Q235A, B, C, D, Q255A, B, Q275 thiab lwm yam.

Lus Cim: "Q" yog cov ntawv suab Suav ntawm cov qoob loo "qu", ua raws li qhov tsawg kawg nkaus ntawm cov qoob loo (σ S) ntawm qib, ua raws li lub cim raws li cov ntsiab lus tsis huv (sulfur, phosphorus) los ntawm siab mus rau qis nrog kev hloov pauv ntawm cov ntsiab lus carbon thiab manganese, faib ua plaub qib A, B, C, D.

Cov yeeb nkab hlau no yog cov yeeb nkab loj tshaj plaws, siv tau dav heev, dov tau ntau yam, xws li phaj, profile (puag ncig, square, tiaj tus, ua haujlwm, groove, lub kaum sab xis, thiab lwm yam) thiab profile thiab tsim cov yeeb nkab hlau vuam. Feem ntau siv rau hauv chaw ua haujlwm, choj, nkoj thiab lwm yam kev tsim kho thiab cov kav dej thauj dej dav dav. Cov hlau no feem ntau siv ncaj qha yam tsis tau kho cua sov.

Cov yeeb nkab hlau tsis tshua muaj zog thiab muaj zog (GB/T8162-2008)

Ntxiv rau qee qhov silicon lossis manganese, cov kav hlau muaj lwm yam khoom siv uas haum rau Tuam Tshoj cov peev txheej. Xws li vanadium (V), niobium (Nb), titanium (Ti), txhuas (Al), molybdenum (Mo), nitrogen (N), thiab cov khoom tsis tshua muaj av (RE). Raws li cov tshuaj lom neeg muaj pes tsawg leeg thiab kev ua tau zoo, nws qib yog sawv cev los ntawm Q295A, B, Q345A, B, C, D, E, Q390A, B, C, D, E, Q420A, B, C, D, E, Q460C, D, E thiab lwm yam qib hlau, thiab nws lub ntsiab lus zoo ib yam li cov kav hlau carbon.

Ntxiv rau cov hlau qib A thiab B, cov hlau qib C, QIB D thiab Qib E yuav tsum muaj tsawg kawg ib qho ntawm cov khoom siv noob zoo xws li V, Nb, Ti thiab Al. Txhawm rau txhim kho kev ua tau zoo ntawm cov hlau, A, B qib hlau kuj tseem tuaj yeem ntxiv rau ib qho ntawm lawv. Tsis tas li ntawd, cov ntsiab lus seem ntawm Cr, Ni thiab Cu yog tsawg dua 0.30%. Q345A, B, C, D, E yog cov qib sawv cev ntawm hom hlau no, ntawm cov hlau qib A, B feem ntau hu ua 16Mn; Ntau tshaj ib qho khoom siv noob yuav tsum tau ntxiv rau qib C thiab saum cov yeeb nkab hlau, thiab ib qho khoom siv cuam tshuam kub qis yuav tsum tau ntxiv rau nws cov khoom siv kho tshuab.

Qhov piv ntawm cov yeeb nkab hlau no rau cov hlau carbon. Nws muaj qhov zoo ntawm lub zog siab, kev ua haujlwm zoo, lub neej ntev, ntau yam kev siv thiab kev txuag nyiaj piv rau lwm yam. Nws yog siv dav hauv Choj, nkoj, boilers, tsheb thiab cov qauv tseem ceeb.