Cov hlau, suav nrog cov khoom siv hlau, raug kuaj kom zoo nyob rau hauv ntau txoj hauv kev, suav nrog kev sim tensile, khoov qaug zog, kev sim compression / dabtsi yog khoov thiab kuaj corrosion kuj.Cov ntaub ntawv thiab cov khoom muaj feem xyuam tuaj yeem tsim thiab tsim nyob rau hauv lub sijhawm tiag tiag kom taug qab cov khoom lag luam zoo, uas tuaj yeem zam kev rov qab los ntawm kev ua haujlwm zoo thiab pov tseg ntawm cov khoom siv raw.
Muaj ntau ntau hom hlau.
Carbon Steel
Carbon steel, tseem hu ua carbon steel, yog cov hlau-carbon alloy nrog cov ntsiab lus carbon (wc) tsawg dua 2%.Ntxiv nrog rau carbon, carbon hlau feem ntau muaj me me ntawm silicon, manganese, sulfur thiab phosphorus.
Cov pa roj carbon steel tuaj yeem muab faib ua peb pawg: carbon steel qauv, cov cuab yeej carbon steel thiab dawb-txiav cov qauv hlau.Carbon structural steel tseem tuaj yeem muab faib ua ob hom qauv hlau rau kev tsim kho thiab tshuab tsim.
Raws li cov ntsiab lus carbon tuaj yeem muab faib ua cov pa roj carbon tsawg (wc ≤ 0.25%), carbon steel (wc 0.25% ~ 0.6%) thiab carbon steel siab (wc> 0.6%).Raws li phosphorus, sulfur cov ntsiab lus tuaj yeem muab faib ua cov pa roj carbon zoo tib yam (muaj phosphorus, sulfur siab dua), cov pa roj carbon zoo (muaj phosphorus, sulfur qis) thiab cov hlau zoo siab (muaj phosphorus, sulfur qis).
Qhov siab dua cov ntsiab lus ntawm cov pa roj carbon steel, qhov siab dua qhov hardness thiab lub zog, tab sis cov yas yog txo.
Cov khoom siv carbon steel
Hom hlau no feem ntau los xyuas kom meej cov khoom siv kho tshuab, yog li nws qib qhia txog nws cov khoom siv kho tshuab, nrog Q + tus lej, qhov "Q" rau qhov taw qhia tawm "Qu" tus cwj pwm ntawm Hanyu Pinyin thawj zaug, tus lej qhia tus nqi taw tes, Piv txwv li, Q275 hais tias cov ntsiab lus tawm ntawm 275MPa.Yog tias qib tau cim nrog cov ntawv A, B, C, D, nws txhais tau hais tias cov qib steel zoo sib txawv, muaj cov nyiaj S, P txhawm rau txo cov hlau zoo kom txhim kho.Yog tias tsab ntawv "F" raug cim tom qab qib, nws yog cov hlau npau npau, cim "b" rau cov hlau ib nrab, tsis yog "F" lossis "b" rau cov hlau tsis muaj zog.Piv txwv li, Q235-AF txhais tau tias A-qib boiling hlau nrog ib tug yield point ntawm 235 MPa, thiab Q235-c txhais tau tias c-qib quiescent hlau nrog ib tug yield point ntawm 235 MPa.
Carbon structural steels feem ntau yog siv tsis muaj kev kho cua sov thiab nyob rau hauv cov khoom siv ncaj qha.Feem ntau Q195, Q215 thiab Q235 steels muaj ib feem ntawm cov pa roj carbon tsawg, cov khoom siv vuam zoo, zoo plasticity thiab toughness, muaj qee lub zog, thiab feem ntau dov rau hauv nyias daim hlau, tuav, welded steel kav, thiab lwm yam., siv nyob rau hauv txuas hniav, cov tsev thiab lwm cov qauv thiab hauv kev tsim cov rivets, screws, txiv ntseej thiab lwm yam.Q255 thiab Q275 steels muaj cov pa roj carbon ntau dua me ntsis, lub zog ntau dua, zoo dua plasticity thiab toughness, tuaj yeem welded, thiab feem ntau dov Lawv feem ntau dov rau hauv ntu, tuav thiab daim hlau rau cov khoom siv thiab tsim cov khoom siv tshuab yooj yim. xws li txuas rods, gears, couplings thiab pins.
Post lub sij hawm: Jan-31-2023