ASTM Q235 Q345 carbon steel phaj

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Dab tsi yog cov khoom ntawm carbon steel phaj:Nws yog ib hom hlau uas muaj cov ntsiab lus carbon tsawg dua 2.11% thiab tsis txhob txwm tshaj tawm cov ntsiab lus hlau.Nws tuaj yeem raug hu ua cov pa roj carbon steel lossis carbon hlau.Ntxiv nrog rau cov pa roj carbon, nws tseem muaj me me ntawm silicon, manganese, sulfur, phosphorus thiab lwm yam khoom.Qhov siab dua cov ntsiab lus carbon, qhov zoo dua qhov hardness thiab lub zog, tab sis cov yas yuav phem dua

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Khoom zoo

Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm carbon steel phaj.

Nws qhov zoo yog:

1. Tom qab kev kho cua sov, qhov hardness thiab hnav tsis kam tuaj yeem txhim kho.

2. Lub hardness yog tsim nyog thaum lub sij hawm annealing, thiab lub machinability yog zoo.

3. Nws cov khoom siv raw yog ntau heev, yog li nws yooj yim mus nrhiav, yog li tus nqi tsim khoom tsis siab.

Nws qhov tsis zoo yog:

1. Nws thermal hardness tsis zoo.Thaum nws siv los ua cov khoom siv, qhov kub thiab txias tshaj 200 degrees, thiab hardness thiab hnav tsis kam yuav deteriorate.

2. Nws hardenability tsis zoo.Thaum nws yog dej quenched, nws txoj kab uas hla feem ntau yog khaws cia ntawm 15 mus rau 18 hli, thaum nws tsis quenched, nws txoj kab uas hla thiab thickness feem ntau yog 6 hli, yog li nws yog feem ntau deformation los yog tawg.