Qhov sib txawv tseem ceeb ntawm cov hlau tsis tshua muaj hlau thiab cov hlau alloy siab yog cov hlau tsis tshua muaj hlau tsis tshua muaj qis dua 0.2% alloying caij, whereas high alloy steels muaj ntau tshaj 5% alloying caij.
Ib qho hlau yog sib xyaw ntawm ob lossis ntau lub ntsiab lus. Nws yog tsim los ntawm kev sib xyaw hlau nrog lwm cov ntsiab lus (hlau lossis nonmetals lossis ob qho tib si) kom tau txais cov khoom siv uas muaj cov khoom zoo dua qub piv rau cov hlau qub. Tsawg alloy thiab siab alloy steel yog ob hom hlau alloys.
Dab tsi yog Alloy Steel?
Cov hlau tsis tshua muaj hlau yog ib hom hlau hlau uas nws cov khoom tau kho kom zoo dua piv rau cov hlau. Piv txwv li, cov hlau no muaj cov khoom siv zoo dua qub thiab muaj zog corrosion ntau dua li cov hlau. Cov ntsiab lus carbon ntawm cov hlau tsis tshua muaj hlau yog tsawg dua 0.2%. Alloying yam uas tsis yog carbon muaj xws li Ni, Cr, Mo, V, B, W thiab Cu.
Daim duab 01: Hlau
Feem ntau, cov txheej txheem tsim cov hlau alloy no suav nrog kev kho cua sov thiab tempering (rau normalizing). Tab sis tam sim no, nws nyiam suav nrog quenching thiab tempering. Tsis tas li ntawd, yuav luag tag nrho cov khoom siv hlau tsis tshua muaj hlau yog weldable. Txawm li cas los xij, cov khoom siv qee zaum yuav tsum tau kho ua ntej lossis tom qab vuam (kom tsis txhob tawg).
Qee qhov zoo ntawm cov hlau tsis tshua muaj xws li cov hauv qab no:
- Yield zog
- Oxidation kuj
- Hydrogen resistance
- Kub-kub ductility, thiab lwm yam.
Tsis tas li ntawd, cov khoom siv no muaj txiaj ntsig zoo hauv kev lag luam, tab sis ntawm qhov kub qis dua 580 ° C. Yog tias qhov kub siab tshaj qhov ntawd, cov khoom siv no tsis tsim nyog lawm vim tias tsis muaj oxidation txaus los tiv thaiv qhov kub thiab txias.
High Alloy Steel yog dab tsi?
High alloy steel yog hom hlau alloy uas muaj ntau tshaj 5% ntawm cov hlau alloying. Tsis zoo li cov hlau tsis tshua muaj hlau, cov hlau alloying rau cov hlau alloy siab yog chromium thiab npib tsib xee. Ib qho piv txwv zoo ntawm cov khoom siv no yog stainless hlau.
Daim duab 02: Ib txoj hlua ua los ntawm Stainless Hlau
Chromium muab cov hlau nrog nyias oxide txheej ntawm cov hlau nto. Peb hu nws lub latent txheej vim hais tias txheej no ncua lub corrosion ntawm cov hlau. Ntxiv mus, cov tuam ntxhab feem ntau ntxiv cov pa roj carbon ntau thiab manganese txhawm rau muab qhov austenitic rau cov hlau. Ntxiv mus, cov khoom no yog kim tshaj li cov hlau tsis tshua muaj hlau.
Dab tsi yog qhov sib txawv ntawm Cov Hlau Txhuas Txhuas thiab Cov Hlau Hlau Siab?
Ob qho tib si qis thiab siab alloy steel muaj cov khoom zoo dua li carbon steel. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm cov hlau tsis tshua muaj hlau thiab cov hlau alloy siab yog tias cov hlau tsis tshua muaj hlau tsis tshua muaj qis dua 0.2% cov hlau alloying, thaum cov hlau alloy siab muaj ntau tshaj 5% alloying. Thaum xav txog cov tshuaj muaj pes tsawg leeg, cov hlau tsis muaj hlau muaj hlau, carbon (tsawg dua 0.2%), thiab lwm yam alloying ntsiab xws li Ni, Cr, Mo, V, B, W thiab Cu, thaum cov hlau alloy siab muaj hlau chromium, npib tsib xee, carbon, manganese, thiab lwm yam.
Cov lus qhia hauv qab no muab cov ntaub ntawv ntxiv hais txog qhov sib txawv ntawm cov hlau tsis tshua muaj hlau thiab cov hlau alloy siab.
Summary – Low Alloy Steel vs High Alloy Steel
Ob qho tib si qis thiab siab alloy steel muaj cov khoom zoo dua li cov hlau. Qhov sib txawv tseem ceeb ntawm cov hlau tsis tshua muaj hlau thiab cov hlau alloy siab yog cov hlau tsis tshua muaj hlau tsis tshua muaj qis dua 0.2% cov hlau alloying thaum cov hlau alloy siab muaj ntau tshaj 5% alloying.
