Carbon steel qauv
Qib:Piv txwv li: Q235B
Qib annotation:Q yog yield zog, A yog qib zoo (muaj plaub qib, ABCD), thiab F yog boiling hlau.
Nta:Tus nqi qis, kev ua haujlwm zoo heev (xws li weldability thiab txias formability).
Daim ntawv thov:General engineering cov qauv thiab cov khoom siv tshuab zoo tib yam. Piv txwv li, Q235 tuaj yeem siv los ua bolts, txiv ntseej, pins, hooks thiab tsis tshua muaj qhov tseem ceeb ntawm cov khoom siv, nrog rau cov hlau threaded, steel seem, thiab steel tuav hauv lub tsev.
High-zoo carbon structural steel
Qib:Piv txwv li 45, 65Mn, 08F.
Qib annotation:ncaj qha qhia txog kaum txhiab ntawm cov hlau carbon cov ntsiab lus.
Daim ntawv thov:Cov hlau tsis yog hlau siv los tsim cov khoom siv tshuab tseem ceeb feem ntau yog siv tom qab kev kho cua sov.
Common steel qib thiab siv:
08F, cov pa roj carbon tsawg tsawg, zoo plasticity, tsis tshua muaj zog, siv rau stamping qhov chaw xws li tsheb thiab ntsuas vaj tse;
20, zoo plasticity thiab weldability, siv rau cov khoom uas tsis muaj zog yuav tsum tau thiab carburized qhov chaw, xws li hoods, welded ntim, me shafts, ceev, washers thiab carburized zog;
45, 40Mn, zoo tag nrho cov khoom siv tom qab quenching thiab tempering, siv rau cov khoom siv nrog cov rog loj, xws li lub zog, txuas rods, tshuab cuab yeej spindles, thiab lwm yam .;
60, 65Mn steel muaj lub zog siab; siv los tsim ntau yam springs, locomotive log rims, thiab low-speed wheels.
Cov pa roj carbon steel
Qib:Piv txwv li, T12 steel sawv cev rau cov cuab yeej steel nrog Wc=1.2%.
Qib annotation:T ntxiv rau txhiab ntawm cov hlau carbon ntsiab lus.
Nta:Nws belongs rau eutectoid steel thiab hypereutectoid steel, muaj zog thiab hardness, zoo hnav tsis kam, thiab yog tsim rau kev tsim ntau yam tsawg-ceev txiav cov cuab yeej.
Common steel qib thiab siv:
T7, T8: rau ua qhov chaw uas yuav tsum tau toughness thiab tiv taus tej yam cuam tshuam. Xws li sledgehammers, punches, chisels, woodworking tools, txiab.
T9, T10, T11: rau kev ua cov cuab yeej uas yuav tsum tau muaj zog hardness thiab siab hnav tsis kam nrog tsawg cuam tshuam. Xws li cov kais dej, xyaum me me, tuag, tes pom cov hniav.
T12, T13: rau kev tsim cov cuab yeej uas tsis raug cuam tshuam. Xws li cov ntaub ntawv, scrapers, rab chais, thiab cov cuab yeej ntsuas.
Cam khwb cia hlau
Qib:Piv txwv li, ZG200-400, uas txhais tau tias cam khwb cia hlau nrog σs=200MPa thiab σb=400MPa.
Kev ua tau zoo:Qhov kev ua tau zoo ntawm kev ua haujlwm yog qhov phem dua li cov hlau cam khwb cia, tab sis cov khoom siv kho tshuab zoo dua li cov hlau cam khwb cia.
Daim ntawv thov:Feem ntau yog siv los tsim cov khoom siv hluav taws xob tseem ceeb nrog cov duab nyuaj, cov cuab yeej siv siab, thiab nyuaj rau tsim los ntawm forging thiab lwm txoj hauv kev, xws li tsheb gearbox vaj tse, locomotive tsheb couplers thiab couplings, thiab lwm yam.
