1018 Carbon Steel Round Rod, Unpolished (Mill) Finish, Cold Finished Temper, ASTM A108, 1.25″ Txoj kab uas hla, 24″ Ntev

Cov hlau puag ncig yog hais txog cov hlau ntev thiab khov kho uas muaj ntu puag ncig. Nws cov lus qhia yog qhia ua txoj kab uas hla, hauv millimeters (mm). Piv txwv li, "50mm" txhais tau tias cov hlau puag ncig uas muaj txoj kab uas hla ntawm 50mm. Kev faib tawm raws li cov tshuaj lom neeg muaj pes tsawg leeg, cov hlau carbon tuaj yeem faib ua cov hlau carbon qis, cov hlau carbon nruab nrab thiab cov hlau carbon siab raws li cov tshuaj lom neeg muaj pes tsawg leeg (piv txwv li cov ntsiab lus carbon).

1. Cov hlau tsis tshua muaj carbon

Kuj hu ua hlau tsis muaj zog, hlau uas muaj cov pa roj carbon tsawg nrog cov ntsiab lus carbon ntawm 0.10% txog 0.30% yog qhov yooj yim lees txais ntau yam kev ua tiav, xws li forging, vuam thiab txiav. Nws feem ntau siv rau hauv kev tsim cov saw hlau, rivets, bolts, shafts, thiab lwm yam.

2. Cov hlau carbon nruab nrab

Cov hlau carbon uas muaj cov pa roj carbon ntawm 0.25% ~ 0.60%. Muaj cov hlau tua, cov hlau tua ib nrab, cov hlau kub thiab lwm yam khoom. Ntxiv rau cov pa roj carbon, nws kuj tseem muaj cov manganese me me (0.70% ~ 1.20%). Raws li qhov zoo ntawm cov khoom, nws muab faib ua cov hlau carbon ib txwm thiab cov hlau carbon zoo. Kev ua haujlwm kub thiab txiav zoo, kev ua haujlwm vuam tsis zoo. Lub zog thiab qhov nyuaj yog siab dua li cov hlau carbon qis, thaum lub plasticity thiab toughness qis dua li cov hlau carbon qis. Cov ntaub ntawv kub dov thiab kos txias tuaj yeem siv ncaj qha yam tsis muaj kev kho cua sov, thiab kuj tuaj yeem siv tom qab kev kho cua sov. Cov hlau carbon nruab nrab yog siv dav tshaj plaws hauv ntau yam kev siv nrog qib zog nruab nrab. Ntxiv nrog rau kev siv ua cov ntaub ntawv tsim kho, nws kuj tseem siv dav los tsim ntau yam khoom siv kho tshuab.

3. Cov hlau carbon siab

Feem ntau hu ua cov hlau siv ua cuab yeej, nrog cov ntsiab lus carbon txij li 0.60% txog 1.70%, uas tuaj yeem ua kom tawv thiab tempered. Rauj thiab crowbar yog ua los ntawm cov hlau nrog cov ntsiab lus carbon ntawm 0.75%; cov cuab yeej txiav xws li lub laum me ntsis, kais thiab reamer yog ua los ntawm cov hlau nrog cov ntsiab lus carbon ntawm 0.90% txog 1.00%.