Tus hualloy steel yeeb nkabyog ntxiv qee cov ntsiab lus alloy ntawm lub hauv paus ntawm cov hlau, xws li Si, Mn, W, V, Ti, Cr, Ni, Mo, thiab lwm yam, uas tuaj yeem txhim kho lub zog, toughness, hardenability, weldability, thiab lwm yam. hlau.kev ua tau zoo.Alloy steel tuaj yeem raug cais raws li cov ntsiab lus ntawm cov ntsiab lus alloy, thiab hauv kev tsim khoom thiab lub neej, alloy steel yuav raug siv rau hauv kev lag luam tshwj xeeb, thiab nws kuj yog ib qho kev faib raws li lub hom phiaj.
Classification raws li cov ntsiab lus ntawm alloying ntsiab
Cov hlau tsis tshua muaj hlau: tag nrho cov hlau alloy yog tsawg dua 5%;
Nruab nrab alloy steel: tag nrho cov nyiaj alloy yog 5 ~ 10%;
High alloy steel: tag nrho cov alloy yog siab tshaj 10%.
Kev faib tawm los ntawm lub hom phiaj
Alloy structural steel: low alloy structural steel (tseem hu ua cov hlau tsis tshua muaj hlau);alloy carburizing steel, alloy quenched thiab tempered steel, alloy caij nplooj ntoos hlav steel;pob bearing steel
Alloy cuab yeej steel: alloy txiav cuab yeej hlau (xws li cov hlau tsis tshua muaj hlau txiav, cov hlau ceev ceev);alloy tuag steel (xws li txias tuag steel, kub tuag steel);steel rau ntsuas cov cuab yeej
Kev ua haujlwm tshwj xeeb steel: stainless hlau, hlau-resistant, hnav-resistant steel, thiab lwm yam.
Alloy hlau tooj
Tsawg alloy siab zog structural steel
Nws lub npe hom yog teem rau hauv kev txiav txim los ntawm peb qhov chaw: Suav pinyin tsab ntawv (Q) sawv cev rau qhov taw tes tawm los, tus nqi txwv tsis pub dhau, thiab cov cim qib zoo (A, B, C, D, E).Piv txwv li, Q390A txhais tau tias qis-alloy high-strength structural steel nrog yield zog σs = 390N / mm2 thiab zoo qib A.
Alloy structural hlau
Nws lub npe muaj peb ntu: "ob tus lej, kaum lub cim cim + tus lej".Thawj ob tus lej sawv cev rau 10,000 npaug ntawm qhov nruab nrab ntawm cov pa roj carbon ntau hauv cov hlau, lub cim cim qhia cov ntsiab lus alloying muaj nyob hauv cov hlau, thiab cov lej tom qab lub cim cim qhia txog 100 npaug ntawm qhov nruab nrab pawg ntawm cov khoom.Thaum qhov nruab nrab loj feem ntawm cov ntsiab lus alloying tsawg dua 1.5%, feem ntau tsuas yog cov ntsiab lus qhia tab sis tsis yog tus lej;Thaum qhov nruab nrab pawg feem ntau yog ≥1.5%, ≥2.5%, ≥3.5%, ..., 2 thiab 3 yog sib npaug cim tom qab cov alloying ntsiab, 4, ...Piv txwv li, 40Cr muaj qhov nruab nrab carbon loj feem Wc = 0.4%, thiab qhov nruab nrab chromium pawg feem WCr <1.5%.Yog tias nws yog qib high-zoo steel, ntxiv "A" tom kawg ntawm qib.Piv txwv li, 38CrMoAlA steel belongs rau qib high-zoo alloy structural steel.
Rolling bearing hlau
Ntxiv "G" (thawj tsab ntawv ntawm Suav pinyin ntawm lo lus "yob") nyob rau hauv pem hauv ntej ntawm lub npe hom, thiab tus naj npawb tom qab nws qhia tau hais tias ib txhiab lub sij hawm qhov loj feem ntawm chromium, thiab cov loj feem ntawm carbon tsis cim. .Piv txwv li, GCr15 steel yog dov bearing steel nrog qhov nruab nrab loj feem ntawm chromium WCr = 1.5%.Yog hais tias chromium bearing steel muaj alloying cov ntsiab lus uas tsis yog chromium, txoj kev qhia ntawm cov ntsiab lus no yog tib yam li cov qauv hlau dav dav.Rolling bearing steels yog tag nrho cov qib high-zoo steels, tab sis "A" tsis ntxiv tom qab qib.
Alloy cuab yeej steel
Qhov sib txawv ntawm tus naj npawb ntawm cov hlau no thiab cov hlau hlau alloy yog tias thaum Wc <1%, ib tus lej siv los qhia txog txhiab npaug ntawm qhov loj ntawm cov pa roj carbon;thaum qhov loj feem ntawm carbon yog ≥1%, nws tsis yog cim.Piv txwv li, Cr12MoV steel muaj qhov nruab nrab carbon loj feem ntawm Wc = 1.45% ~ 1.70%, yog li nws tsis raug cim; qhov nruab nrab loj feem ntawm Cr yog 12%, thiab qhov loj feem ntawm Mo thiab V yog ob qho tib si tsawg dua 1.5% .Lwm qhov piv txwv yog 9SiCr steel, nws qhov nruab nrab Wc = 0.9%, thiab qhov nruab nrab WCr yog <1.5%. Txawm li cas los xij, cov cuab yeej siv siab ceev hlau yog qhov tshwj xeeb, thiab nws qhov nruab nrab cov pa roj carbon loj feem tsis raug cim txawm tias nws yog pes tsawg. alloy cuab yeej steel thiab high-speed tool steel yog qib high-zoo steel, tsis tas yuav tsum tau kos "A" tom qab nws qib.
Stainless hlau thiab kub-resistant steel
Tus lej nyob rau hauv pem hauv ntej ntawm hom hlau qib no qhia txog ib txhiab npaug ntawm cov pa roj carbon ntau.Piv txwv li, 3Crl3 steel txhais tau hais tias qhov nruab nrab pawg pawg Wc = 0.3%, thiab qhov nruab nrab pawg pawg WCr = 13%. "0" nyob rau hauv pem hauv ntej ntawm lub hom, xws li 00Cr17Ni14Mo2, 0Cr19Ni9 steel, thiab lwm yam.
Post lub sij hawm: Mar-13-2023