Gnee Hlau (Tianjin) Co., Ltd
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Tus nqi sib tw
Peb cov nqi sib tw, thiab peb muab cov nqi hloov pauv hloov pauv thiab txo nqi kom ntseeg tau tias peb cov neeg siv khoom txaus siab.
Pab neeg muaj kev paub
Peb pab pawg muaj cov kws tshaj lij nrog cov kws tshaj lij uas xav tau los ua kom tau raws li cov kev xav tau tshwj xeeb ntawm peb cov neeg siv khoom.
Ntiaj teb no muaj nyob
Peb muaj kev muaj zog thoob ntiaj teb, nrog cov chaw ua haujlwm hauv ntau qhov chaw, ua rau peb muab peb cov kev pabcuam rau cov neeg siv khoom thoob ntiaj teb.
Kev Loj Hlob
Peb tau cog lus los txhawb kev txhim kho kom ruaj khov los ntawm kev ua haujlwm nrog cov tuam ntxhab thiab cov muag khoom uas ua tau raws li peb cov qauv kev coj ua thiab ib puag ncig.
Alloy steel yog ib hom hlau uas muaj cov ntsiab lus uas tsis yog carbon, xws li npib tsib xee, chromium, thiab manganese, los txhim kho nws cov yam ntxwv. Cov ntsiab lus ntxiv no ua rau cov hlau muaj zog, hardness, thiab durability, ua rau nws tsim nyog rau kev siv ntau yam kev siv, nrog rau kev tsim kho, kev tsim khoom, thiab kev thauj mus los. Alloy steel tuaj yeem ua los ntawm ntau txoj hauv kev, suav nrog ntxiv cov ntsiab lus thaum lub sijhawm tsim khoom lossis los ntawm kev kho cua sov tom qab cov hlau tau tsim.
Ua kom muaj zog
Qhov sib ntxiv ntawm cov ntsiab lus alloying xws li chromium, npib tsib xee, thiab molybdenum tuaj yeem ua rau muaj zog ntawm cov hlau, ua rau nws tsim nyog rau kev siv siab.
Txhim kho toughness
Alloy steel muaj zog dua cov pa roj carbon steel vim muaj cov ntsiab lus alloying, uas ua rau nws tiv taus tawg thiab deformation.
Txhim khu kev hnav tsis kam
Alloy steel muaj siab hnav tsis kam vim muaj cov tawv tawv thiab hnav-resistant carbides, ua rau nws zoo tagnrho rau siv rau hauv cov ntawv thov uas hnav yog kev txhawj xeeb.
Nce corrosion kuj
Qhov sib ntxiv ntawm cov ntsiab lus alloying xws li chromium thiab npib tsib xee txhim kho corrosion kuj ntawm alloy hlau, ua rau nws haum rau siv nyob rau hauv hnyav ib puag ncig.
Txhim kho machinability
Alloy steel yog yooj yim dua rau tshuab piv rau lwm cov high-strength steels, ua rau nws zoo tagnrho rau siv nyob rau hauv high-precision daim ntaub ntawv.
Ntau yam
Alloy steel tuaj yeem tsim los nthuav tawm cov khoom tshwj xeeb, xws li siab hardness lossis ductility, ua rau nws haum rau ntau yam kev siv.
Nqi-zoo
Alloy steel feem ntau tsis tshua kim dua lwm cov ntaub ntawv muaj zog, xws li titanium lossis npib tsib xee alloys, thaum tseem muab cov khoom zoo sib xws.
Tsawg-Alloy Steel
Cov hlau tsis tshua muaj hlau yog cov uas muaj cov khoom sib xyaw ua kom tsawg dua 8% ntawm cov hlau sib xyaw. Cov ntsiab lus alloying no tau ntxiv los txhim kho cov khoom siv ntawm cov hlau. Piv txwv li: molybdenum txhim kho lub zog; npib tsib xee tsub kom cov hlau lub toughness, chromium ntxiv high-temperature zog, corrosion kuj, thiab hardness.
Tsawg-alloy steel yog dav siv hauv kev tsim khoom thiab kev lag luam. Feem ntau siv rau cov hlau no muaj xws li: tsheb tub rog, cov khoom siv tsim kho, nkoj, cov kav dej, cov hlab ntsha siab, cov qauv hlau, thiab cov roj drilling platforms.
High-Strength Low Alloy (HSLA) Hlau
High-strength low alloy (HSLA) steel, los yog microalloyed steel, muaj ob lub zog siab thiab zoo atmospheric corrosion kuj. Muaj 6 pawg tseem ceeb ntawm HSLA steel: weathering steel, acicular ferrite steels, pearlite-txo steels, dual-theem steels, tswj-dov steels, thiab microalloyed ferrite-pearlite steels. Feem ntau, tooj liab, chromium, phosphorus, thiab silicon yog siv los txhawb kev tiv thaiv corrosion, thaum vanadium, niobium, titanium, thiab tooj liab yog siv los ua kom muaj zog. Lub zog zoo ntawm HSLA steels tuaj yeem ua rau lawv nyuaj rau kev tsim.
HSLA tau siv dav hauv kev lag luam tsheb. Kub-dov HSLA steel tuaj yeem siv rau lub tshuab ncua kev kawm, chassis, lub log, thiab lub rooj zaum. Txawm hais tias txias-dov HSLA steels tuaj yeem siv rau kev txhawb nqa thiab lub rooj zaum.
High-Alloy hlau
High-alloy steel yog txawv los ntawm nws cov ntsiab lus siab alloy ntawm ntau tshaj 8% ntawm tag nrho cov muaj pes tsawg leeg ntawm cov hlau. Nws tuaj yeem kim los tsim cov hlau alloy siab thiab nws tuaj yeem nyuaj rau kev ua haujlwm nrog. Txawm li cas los xij, cov qib no zoo meej rau kev siv tsheb, cov khoom siv hauv tsev, kev ua tshuaj lom neeg, thiab cov khoom siv hluav taws xob tsim hluav taws xob vim lawv cov tawv tawv, corrosion resistance, thiab toughness.
Stainless hlau
Stainless hlau yog ib qho ntawm cov hlau uas muaj npe nrov tshaj plaws thiab cov corrosion-resistant tshaj plaws. Nws feem ntau muaj qee qhov sib xyaw ua ke ntawm npib tsib xee, chromium, thiab molybdenum ua cov ntsiab lus tseem ceeb, uas ua rau ib puag ncig 11-30 % ntawm cov hlau muaj pes tsawg leeg. Peb hom stainless hlau muaj nyob: austenitic, ferritic, thiab martensitic.
Austenitic steels feem ntau yog siv los muaj cov kua dej corrosive thiab tshuab rau kev lag luam mining, tshuaj, vaj tsev, lossis kev lag luam tshuaj. Muaj ntau ntau ntawm npib tsib xee (txog 35%), molybdenum, chromium (16-26%), thiab niobium muaj nyob rau hauv cov hlau austenitic, muaj txog li 0.15% carbon. Austenitic steels feem ntau muaj qhov zoo tshaj plaws corrosion kuj ntawm tag nrho cov stainless hlau. Cov hlau no kuj muaj cov qauv siab thiab lub zog thiab feem ntau xav tau rau lawv cov khoom ntawm qhov kub thiab txias.
Ferritic steel, siv nyob rau hauv kev lag luam machinery thiab tsheb, yog ib qib ntawm stainless hlau nrog tsawg dua 0.10% carbon thiab ntau tshaj 12% carbon. Qib no ntawm cov hlau tau tsim los tiv thaiv corrosion thiab oxidation, tshwj xeeb tshaj yog kev nyuaj siab tawg corrosion. Cov hlau no yog qhov tseem ceeb tsis muaj peev xwm ua kom tawv los ntawm kev kho cua sov, thiab lawv tsuas tuaj yeem ua rau me ntsis hardened los ntawm txias dov.
Martensitic steels, feem ntau siv rau cutlery, muaj cov ntsiab lus chromium ntawm 11.6 txog 18% nrog 1.2% carbon thiab npib tsib xee qee zaum ntxiv. Raws li ib pab pawg, cov ntsiab lus chromium siab tshaj plaws ntawm martensitic steels qis dua cov ntsiab lus chromium siab tshaj plaws rau ferritic thiab austenitic steels. Martensitic steels tau lees paub rau lawv qhov tshwj xeeb hardenability nrog me ntsis corrosion kuj. Qhov no ua rau lawv zoo tagnrho rau cutlery, wrenches, cov cuab yeej phais, thiab turbines.
Microalloyed hlau
High-strength low alloy (HSLA) steels feem ntau hu ua microalloyed steels.
Advanced High-Strength Steel (AHSS)
Advanced high-strength steel (AHSS) feem ntau yog siv hauv kev lag luam tsheb. Cov hlau alloy no yog ib qho tseem ceeb hauv kev txo qhov hnyav tag nrho ntawm cov tsheb. Nws muaj cov khoom tshwj xeeb, xws li: siab zog thiab optimized formability- ua rau nws zoo tagnrho rau kev siv tsheb.
Maraging Steel
Maraging steel yog ib hom tshwj xeeb ntawm cov hlau alloy nrog cov ntsiab lus qis carbon. Qhov no ultra-high-strength steel muaj superior toughness thiab zoo ductility piv rau feem ntau steel. Nyob rau hauv sib piv rau lwm cov hlau alloys, maraging steel yog hardened los ntawm nag lossis daus ntawm intermetallic tebchaw, tsis yog los ntawm lub xub ntiag ntawm carbon. Maraging steel combines siab zog thiab hardness nrog kuj siab ductility ua tsaug rau qhov tsis muaj cov pa roj carbon monoxide thiab siv intermetallic nag lossis daus. Lub ntsiab precipitate hom yog Ni3Mo, Ni3Ti, Ni3Al, thiab Fe2Mo, uas kuj tshwm sim nyob rau hauv high-volume feem. Maraging steels feem ntau yog siv hauv aerospace sector nrog rau kev tsim cov cuab yeej thiab riam phom.
Cov cuab yeej hlau
Cov cuab yeej steel yog ib lo lus siv los piav txog ntau yam ntawm cov pa roj carbon thiab alloy steels uas zoo rau kev tsim cov cuab yeej. Cov hlau no txawv ntawm lawv qhov hardness, tsis kam hnav, toughness, thiab tsis kam mus softening ntawm kub kub. Cov cuab yeej steel qhov zoo tagnrho applicatoughness, thiab tsis kam mus softening ntawm kub kub. Cov cuab yeej steel daim ntawv thov zoo tshaj plaws yog rau kev tsim cov cuab yeej, suav nrog (tab sis tsis txwv rau) tshuab tuag thiab cov cuab yeej tes.
Cov txheej txheem siv rau kev tsim cov hlau alloy muaj xws li cov uas siv cov ntsiab lus alloying xws li chromium, npib tsib xee, molybdenum, vanadium, thiab lwm yam. Nyob ntawm seb hom thiab qib ntawm cov hlau xav tau, ntau cov txheej txheem yog siv los tsim cov hlau alloy. Qee cov txheej txheem sib xws yog:
Electric arc rauv (EAF) txheej txheem
Cov khoom noj khoom haus tseem ceeb rau cov txheej txheem no yog cov hlau nplaum lossis cov hlau ncaj qha txo qis (DRI), uas yog yaj hauv lub cub hluav taws xob. Los ntawm oxygen tshuab los yog nqus degassing, cov ntsiab lus alloying tau nkag mus rau cov hlau molten thiab ua kom zoo dua. Tom qab ntawd cov hlau yog tsim rau hauv slabs, ingots, blooms, billets, los yog lwm yam duab.
Basic oxygen steelmaking (BOS) txheej txheem
Lub hauv paus feedstock rau cov txheej txheem no yog kua npua hlau los ntawm lub qhov cub tawg thiab seem hlau, thiab cov impurities yog oxidised los ntawm tshuab oxygen rau hauv lub converter. Los ntawm lub tshuab nqus tsev degassing lossis ladle metallurgy, cov ntsiab lus alloying tau qhia rau cov hlau molten ua ntej nws yuav ua kom zoo dua. Tom qab ntawd cov hlau yog tsim rau hauv slabs, ingots, blooms, billets, los yog lwm yam duab.
Hluav taws xob induction rauv (EIF) txheej txheem
Nyob rau hauv txoj kev no, cov hlau khib nyiab yog thawj cov khoom noj, thiab nws yog melted siv electromagnetic induction nyob rau hauv ib tug induction rauv. Ladle metallurgy yog siv los kho cov hlau molten tom qab cov ntsiab lus alloying tau qhia. Tom qab ntawd cov hlau yog tsim rau hauv slabs, ingots, blooms, billets, los yog lwm yam duab.
Crucible txheej txheem
Nrog charcoal li cov roj qhov chaw, cov txheej txheem no melts ferroalloys, steel seem, thiab wrought hlau nyob rau hauv ib tug airtight crucible. Cov muaj pes tsawg leeg ntawm cov khoom noj regulates tus nqi ntawm carbon thiab alloying ntsiab. Tom qab melting, cov hlau yog tsim rau hauv ingots.
Cov txheej txheem Bessemer
Npua hlau ua tus thawj feedstock rau cov txheej txheem no, thiab cov huab cua yog tshuab mus rau hauv ib tug pear-puab converter rau oxidize cov kab mob. Ib tus tuaj yeem tswj hwm cov khoom siv alloying thiab cov ntsiab lus carbon los ntawm kev ntxiv ferromanganese lossis spiegeleisen (manganese-nplua nuj npua hlau) rau cov hlau molten. Tom qab melting, cov hlau yog tsim rau hauv ingots.
Qhib hearth txheej txheem
Npua hlau thiab khib nyiab hlau yog thawj cov khoom noj uas siv rau hauv cov txheej txheem no, uas yaj lawv nyob rau hauv ib tug ntiav hearth siv roj los yog roj ua roj. Limestone, hlau ore, thiab lwm yam ntaub ntawv tuaj yeem muab ntxiv rau cov hlau molten los tswj cov alloying thiab cov ntsiab lus carbon. Tom qab melting, cov hlau yog tsim rau hauv ingots.
Tom qab casting, cov hlau alloy steel ingots, paj, billets, los yog slabs yog ntxiv ua tiav los tsim ntau yam duab thiab cov ntaub ntawv ntawm alloy steel khoom, xws li tuav, rods, xov hlau, nplooj ntawv, daim hlau, pipelines, thiab hlab. Cov txheej txheem ua haujlwm ntxiv muaj xws li kub dov, txias dov, txheej txheem forging, machining, kev kho cua sov, thiab kev kho deg.
Kev tsim kho
Cov hlau alloys tau siv dav hauv kev tsim kho vim lawv lub zog siab thiab kav ntev. Lawv siv rau cov tsev, txuas hniav, thiab lwm yam kev tsim kho vaj tse. Lawv tuaj yeem tiv taus qhov hnyav thiab kev ntxhov siab, ua rau lawv zoo tagnrho rau kev siv cov qauv. Nws kuj tseem tiv taus hluav taws thiab corrosion, ua rau lawv nyiam xaiv rau cov tsev nyob rau hauv ntug dej hiav txwv los yog cov chaw ntub dej. Tsis tas li ntawd, hlau alloys yog recyclable, ua rau lawv ib puag ncig tus phooj ywg kev xaiv rau kev tsim kho. Zuag qhia tag nrho, steel alloys yog cov khoom siv ntau yam thiab txhim khu kev qha rau kev tsim kho, thiab lawv cov khoom ua rau lawv yog ib qho tseem ceeb ntawm cov khoom siv niaj hnub no.
Automotive
Cov hlau alloys tau siv dav hauv lub ntiaj teb tsheb vim lawv lub zog siab thiab ua haujlwm ntev. Cov no tsim cov tsheb thav duab, cov khoom siv cav, lub tshuab raug tshem tawm, thiab lub cev qhov chaw. Lawv muaj kev tiv thaiv zoo heev rau corrosion, uas yog ib qho tseem ceeb hauv kev siv tsheb, qhov twg raug cov dej noo thiab txoj kev ntsev tuaj yeem ua rau xeb. Lawv kuj yog tus nqi-zoo thiab raug tsim rau hauv cov duab sib txawv thiab ntau thiab tsawg. Nyob rau hauv xyoo tas los no, cov qauv ntawm lub teeb yuag tsheb tau coj mus rau txoj kev loj hlob ntawm high-strength steel alloys, uas muaj lub zog tib yam li cov tsoos hlau alloys thaum txo qhov hnyav thiab txhim kho roj efficiency.
Aerospace
Cov hlau alloys muaj kev siv dav hauv kev lag luam aerospace vim lawv lub zog siab, toughness, thiab tsis kam mus corrosion thiab kub. Lawv yog siv nyob rau hauv kev tsim aircraft thav duab, cav qhov chaw, tsaws iav, thiab lwm yam tseem ceeb Cheebtsam. Alloys xws li stainless hlau thiab titanium yog nrov rau aerospace daim ntaub ntawv raws li lawv yog lub teeb yuag tsis tau ruaj thiab muaj peev xwm tiv taus kub thiab siab. Tsis tas li ntawd, cov hlau alloys tuaj yeem ua tiav rau cov khoom tshwj xeeb, ua rau lawv haum rau kev siv aerospace sib txawv.
Zog
Hlau alloys yog dav siv nyob rau hauv lub zog. Cov hlau alloys yog siv rau hauv cov khoom siv drilling, cov kav dej, thiab cov chaw tawm sab nrauv hauv kev lag luam roj thiab roj.
Lawv kuj tau siv hauv kev tsim hluav taws xob, suav nrog cov chaw tsim hluav taws xob nuclear rau cov hlab ntsha reactor thiab cov tshuab hluav taws xob. Tsis tas li ntawd, cov hlau alloys yog siv rau hauv cov cua turbines, hnub ci vaj huam sib luag, thiab lwm yam kev siv hluav taws xob tauj dua tshiab. Cov hlau alloys siv hauv kev lag luam hluav taws xob yuav tsum ua tau raws li kev nyab xeeb thiab kev ua haujlwm siab thiab ua raws li cov cai thiab ib puag ncig cov cai. Kev tshawb fawb tsis tu ncua thiab kev txhim kho yog tsom rau kev txhim kho kev ua tau zoo thiab kev ruaj khov ntawm cov hlau alloys hauv kev siv hluav taws xob.
Kev tsim khoom
Manufacturing industries vam khom rau cov hlau alloys rau lawv cov tshuab, cuab yeej, thiab khoom siv. Hlau lub zog, durability, thiab malleability ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim khoom. Piv txwv li, steel alloys tsim ntau yam kev lag luam 'cov cuab yeej txiav, kev siv tshuab, thiab cov khoom siv hlau. Tsis tas li ntawd, cov hlau alloys yog siv los tsim cov chaw tsim khoom, xws li cov chaw tsim khoom thiab cov chaw tsim khoom. Hlau lub zog thiab kav ntev yog qhov tseem ceeb rau kev muab kev txhawb nqa thiab kev tiv thaiv cov tshuab hnyav thiab khoom siv. Tsis tas li ntawd, siv cov hlau alloys hauv kev tsim khoom tuaj yeem txhim kho kev ua haujlwm thiab kev ua haujlwm ntev ntawm cov tshuab, pab cov lag luam txo cov nqi tu thiab ua kom cov khoom tsim tau.
Kho mob
Cov hlau alloys kuj tseem siv rau hauv cov khoom siv kho mob rau lawv lub zog zoo, ua haujlwm ntev, thiab biocompatibility. Stainless hlau feem ntau yog siv rau cov cuab yeej phais, cov cuab yeej kho hniav, thiab kev cog hniav vim nws tsis kam tiv thaiv corrosion thiab muaj peev xwm ua kom tsis muaj menyuam. Qee cov hlau alloys muaj zog, xws li cov pob txha daim hlau, cov ntsia hlau, thiab cov pas nrig, kuj yog siv rau hauv kev cog hniav orthopedic. Kev siv cov hlau alloys hauv cov khoom siv kho mob tau pab txhim kho cov neeg mob tau txais txiaj ntsig los ntawm kev muab cov cuab yeej siv tau zoo thiab siv tau ntev uas tuaj yeem tiv taus qhov hnyav ntawm cov txheej txheem kho mob.
Mechanical Properties
● Lub zog
Lub zog yog cov cuab yeej tseem ceeb ntawm cov hlau alloys thiab txhais tau tias yog lub peev xwm los tiv thaiv deformation thiab tsis ua haujlwm hauv kev ntxhov siab. Lub zog ntawm cov hlau alloy nyob ntawm nws cov muaj pes tsawg leeg, kev ua, thiab microstructure. Cov hlau alloys tuaj yeem muab faib ua ntau pawg raws li lawv lub zog, suav nrog cov hlau qis, nruab nrab, thiab siab zog steel.
● Ductility
Ductility yog lwm yam khoom tseem ceeb ntawm cov hlau alloys thiab hais txog lub peev xwm ntawm cov khoom siv los deform plastically nyob rau hauv tensile kev nyuaj siab yam tsis muaj fracturing. Nws yog ib qho cuab yeej tseem ceeb hauv cov ntawv thov uas xav tau cov khoom siv los tsim lossis zoo li. Cov hlau alloys nrog siab ductility tuaj yeem ua rau cov yas deformation tseem ceeb ua ntej tawg, thaum cov uas tsis tshua muaj kev hloov pauv yuav poob sai sai yam tsis muaj deformation ntau.
● Hardness
Hardness ntsuas cov khoom tsis kam rau indentation lossis khawb. Nws yog ib qho tseem ceeb cov cuab yeej cuab tam rau steel alloys siv nyob rau hauv cov cuab yeej thiab machinery. Kev kho cua sov tuaj yeem ua rau cov hlau tsis muaj zog, xws li quenching thiab tempering. Qhov no tuaj yeem ntsuas tau siv ntau yam kev xeem, suav nrog Rockwell thiab Vickers hardness tests.
● Toughness
Toughness yog lub peev xwm los tiv thaiv tawg nyob rau hauv kev ntxhov siab. Nyob rau hauv cov hlau alloys, toughness yog cuam tshuam los ntawm microstructural yam xws li grain loj, zoo, orientation, impurities, thiab alloying ntsiab. Qhov toughness no tuaj yeem ntsuas tau siv ntau txoj hauv kev, xws li Charpy qhov kev sim cuam tshuam thiab kev kuaj pob txha tawv. High toughness yog ntshaw rau daim ntaub ntawv uas cov khoom yuav raug rau dynamic los yog cuam tshuam loading, xws li cov yam ntxwv Cheebtsam los yog machinery qhov chaw.
Lub cev muaj zog
● Ceev
Qhov ntom ntom yog cov cuab yeej ntawm lub cev ntawm cov hlau alloys uas txiav txim siab lawv qhov hnyav ntawm ib chav tsev ntim. Cov hlau alloys muaj ntau qhov sib txawv nyob ntawm seb lawv muaj pes tsawg leeg thiab kev ua haujlwm. Qhov ntom ntom tuaj yeem ntsuas cov khoom hnyav thiab haum rau cov kev siv tshwj xeeb, xws li kev tsim cov qauv lossis tsheb.
● Thermal conductivity
Thermal conductivity yog hais txog cov khoom muaj peev xwm hloov cov cua sov. Cov hlau alloys muaj qhov nruab nrab thermal conductivity uas tuaj yeem sib txawv nyob ntawm qhov muaj pes tsawg leeg thiab microstructure ntawm cov hlau. Qhov sib ntxiv ntawm cov ntsiab lus alloying thiab impurities xws li carbon, nitrogen, thiab sulfur cuam tshuam rau thermal conductivity ntawm steel alloys. Feem ntau, qhov ntau alloying ntsiab ntxiv rau cov hlau, nws cov thermal conductivity qis dua. Tsis tas li ntawd, lub microstructure ntawm cov hlau, tshwj xeeb tshaj yog muaj cov kab lis kev cai thiab qhov tsis xws luag, tuaj yeem cuam tshuam cov thermal conductivity.
● Hluav taws xob conductivity
Hluav taws xob conductivity ntsuas cov khoom muaj peev xwm ua tau hluav taws xob tam sim no. Cov hlau alloys muaj qhov nruab nrab hluav taws xob conductivity vim lawv cov hluav taws xob siab. Cov hluav taws xob conductivity ntawm steel alloys txawv nyob ntawm seb cov alloying ntsiab thiab lawv cov concentrations. Piv txwv li, stainless hlau alloys muaj qis hluav taws xob conductivity tshaj carbon steel alloys vim muaj chromium thiab lwm yam uas txo cov ndlwg ntawm electrons.
Chemical Properties
● Corrosion Resistance
Corrosion kuj yog ib qho tseem ceeb ntawm cov hlau alloys hauv ntau daim ntawv thov. Stainless hlau, piv txwv li, paub txog lawv qhov tshwj xeeb corrosion kuj. Lwm cov ntsiab lus alloying tuaj yeem txhim kho corrosion kuj ntawm steel. Ib puag ncig yam xws li pH, kub, thiab ntsev raug tuaj yeem cuam tshuam cov hlau alloys 'kev tiv thaiv corrosion. Kev xaiv kom raug thiab kev saib xyuas ntawm cov hlau tuaj yeem ua kom muaj kev tiv thaiv corrosion mus ntev.
● Tshuaj Reactivity
Chemical reactivity yog hais txog qhov nyiam ntawm cov hlau kom hnov mob nrog cov khoom hauv nws ib puag ncig. Qee cov hlau alloys yog cov reactive heev, thaum lwm tus yog tsawg. Lub reactivity ntawm steel nyob ntawm nws muaj pes tsawg leeg thiab cov xwm txheej nws raug, xws li kub thiab noo noo.
Hlau tuaj yeem hnov mob nrog oxygen, dej, acids, thiab cov hauv paus, ntawm lwm yam khoom, uas tuaj yeem ua rau xeb lossis tshuaj lom ntawm cov khoom. Hlau cov tshuaj reactivity tuaj yeem tswj tau los ntawm kev siv cov txheej tiv thaiv los yog cov hlau uas muaj zog tiv thaiv corrosion. Nkag siab txog cov tshuaj reactivity ntawm steel yog qhov tseem ceeb rau kev xaiv cov hlau tsim nyog rau ib daim ntawv thov thiab ua kom cov khoom siv tau ntev.
Cov hlau ntshiab yog mos dhau los siv rau lub hom phiaj ntawm cov qauv, tab sis qhov sib ntxiv ntawm cov khoom me me ntawm lwm cov ntsiab lus ( piv txwv li carbon, manganese lossis silicon) ua rau nws lub zog zoo heev.
Alloys feem ntau muaj zog dua cov hlau ntshiab, txawm hais tias lawv feem ntau muab txo cov hluav taws xob thiab thermal conductivity. Lub zog yog qhov tseem ceeb tshaj plaws los ntawm kev txiav txim siab ntau yam khoom siv. Yog li ntawd, alloys yog siv rau engineering tsim. Kev sib koom ua ke ntawm cov ntsiab lus alloying thiab kev kho cua sov ua rau muaj ntau yam microstructures thiab cov khoom.
Cov pa roj carbon.Cov pa roj carbon monoxide yog cov khoom tsis yog xim hlau, uas yog ib qho tseem ceeb alloying cov khoom nyob rau hauv tag nrho cov ferrous hlau raws li cov ntaub ntawv. Carbon yeej ib txwm muaj nyob rau hauv cov hlau alloys, piv txwv li nyob rau hauv tag nrho cov qib ntawm stainless hlau thiab kub resistant alloys. Cov pa roj carbon monoxide yog qhov muaj zog austenitizer thiab ua kom lub zog ntawm cov hlau. Qhov tseeb, nws yog lub hauv paus tseem ceeb ntawm cov khoom tawv tawv thiab yog qhov tseem ceeb rau kev tsim cov cementite, Fe3C, pearlite, spheroidite, thiab hlau-carbon martensite. Ntxiv ib qho me me ntawm cov pa roj carbon monoxide rau hlau ua lag luam nws cov ductility zoo rau lub zog ntau dua. Yog tias nws tau ua ke nrog chromium raws li cov khoom sib cais (chromium carbide), nws yuav muaj kev cuam tshuam rau kev tiv thaiv corrosion los ntawm kev tshem tawm qee cov chromium los ntawm cov kua dej hauv cov hlau thiab, vim li ntawd, txo cov chromium muaj nyob rau hauv kev ua kom ntseeg tau. corrosion kuj.
Chromium.Chromium nce hardness, lub zog, thiab corrosion kuj. Kev ua kom muaj zog ntawm kev tsim cov hlau ruaj khov carbides ntawm cov ciam teb ntawm cov qoob loo thiab qhov muaj zog nce hauv corrosion kuj ua rau chromium yog ib qho tseem ceeb alloying khoom rau hlau. Qhov tsis kam ntawm cov hlau alloys rau cov tshuaj lom neeg ntawm cov neeg ua haujlwm corrosive yog raws li passivation. Rau passivation kom tshwm sim thiab nyob ruaj khov, Fe-Cr alloy yuav tsum muaj qhov tsawg kawg nkaus chromium cov ntsiab lus ntawm li 11% los ntawm qhov hnyav, saum toj no uas passivity tuaj yeem tshwm sim thiab hauv qab uas nws tsis yooj yim sua. Chromium tuaj yeem siv los ua cov khoom tawv tawv thiab feem ntau siv nrog cov khoom tawv tawv xws li npib tsib xee los tsim cov khoom zoo tshaj plaws. Ntawm qhov kub siab dua, chromium txhawb zog ntxiv. Cov cuab yeej siv ceev ceev muaj nyob nruab nrab ntawm 3 thiab 5% chromium. Nws feem ntau yog siv rau kev siv ntawm qhov xwm txheej no nrog rau molybdenum.
Nickel.Nickel yog ib qho ntawm feem ntau alloying ntsiab. Kwv yees li 65% ntawm nickel ntau lawm yog siv nyob rau hauv stainless hlau. Vim hais tias npib tsib xee tsis tsim cov carbide tebchaw nyob rau hauv steel, nws tseem nyob rau hauv cov tshuaj nyob rau hauv lub ferrite, yog li ntxiv dag zog thiab toughening lub ferrite theem. Nickel steels tau yooj yim kho cua sov vim tias nickel txo qis qhov tseem ceeb ntawm qhov txias txias. Nickel raws li alloys (xws li Fe-Cr-Ni (Mo) alloys) alloys pom zoo ductility thiab toughness, txawm nyob rau theem siab zog thiab cov khoom no tau khaws cia mus txog qhov kub thiab txias. Nickel kuj txo thermal expansion kom zoo dua qhov seem stability. Nickel yog lub hauv paus ntsiab lus rau superalloys, uas yog ib pab pawg ntawm npib tsib xee, hlau-nickel thiab cobalt alloys siv nyob rau hauv dav hlau tshuab. Cov hlau no muaj kev tiv thaiv zoo heev rau thermal creep deformation thiab khaws lawv cov tawv nqaij, lub zog, toughness thiab seem stability ntawm qhov kub thiab txias ntau dua li lwm cov khoom siv hauv aerospace.
Molybdenum.Pom nyob rau hauv me me hauv cov hlau tsis muaj steel, molybdenum nce hardenability thiab lub zog, tshwj xeeb tshaj yog thaum kub kub. Lub siab melting point ntawm molybdenum ua rau nws tseem ceeb heev rau muab lub zog rau cov hlau thiab lwm yam hlau alloys ntawm qhov kub thiab txias. Molybdenum yog qhov tshwj xeeb hauv qhov uas nws ua rau muaj qhov kub thiab txias tensile thiab creep zog ntawm hlau. Nws retards lub transformation ntawm austenite rau pearlite deb tshaj nws ua qhov transformation ntawm austenite rau bainite; Yog li, bainite tuaj yeem tsim los ntawm kev ua kom txias tas li ntawm molybdenum-muaj steels.
Vanadium.Vanadium feem ntau ntxiv rau cov hlau los tiv thaiv kev loj hlob ntawm cov qoob loo thaum kho cua sov. Hauv kev tswj cov qoob loo loj hlob, nws txhim kho ob lub zog thiab toughness ntawm hardened thiab tempered steels.
Tungsten.Tungsten tsim cov carbides ruaj khov thiab ua kom cov nplej loj kom nce hardness, tshwj xeeb tshaj yog kub. Tungsten yog siv dav hauv cov cuab yeej siv siab ceev thiab tau thov los hloov molybdenum hauv kev txo qis ferritic steels rau kev siv nuclear.
● Khaws qhov chaw ntawm cov hlau alloy kom huv si thiab qhuav txhua lub sijhawm. Cov dej noo thiab cov khoom paug tuaj yeem ua rau corrosion thiab lwm yam kev puas tsuaj.
● Lubricate txav qhov chaw tsis tu ncua kom tsis txhob hnav thiab tsim kua muag. Siv cov roj nplua nyeem zoo uas sib xws nrog cov hlau alloy.
● Tshawb xyuas cov hlau tsis tu ncua kom pom cov cim ntawm kev puas tsuaj xws li tawg, xeb, thiab pitting. Kho lossis hloov qhov puas tsuaj tam sim ntawd kom tsis txhob muaj kev puas tsuaj ntxiv.
● Siv cov txheej txheem cia kom zoo kom tsis txhob muaj xeb. Khaws cov hlau alloy hauv qhov chaw qhuav, txias, thiab qhov cua zoo. Khaws nws deb ntawm lwm cov hlau uas tuaj yeem ua rau galvanic corrosion.
● Tsis txhob tso cov hlau tsis huv rau qhov kub thiab txias, tshwj xeeb tshaj yog kub. Kev kub siab tuaj yeem ua rau cov hlau tsis muaj zog thiab ua haujlwm ntev.
● Ceev faj thaum ua haujlwm nrog cov hlau alloy, vim tias nws tuaj yeem ua rau nkig thiab ua rau tawg thaum muaj kev ntxhov siab. Siv cov cuab yeej thiab cov cuab yeej tsim nyog thiab ua raws li cov txheej txheem kev nyab xeeb kom raug.
● Ua haujlwm tsis tu ncua ntawm cov khoom siv uas muaj cov khoom siv hlau alloy. Tshawb xyuas thiab hloov cov khoom hnav lossis puas, ntxuav thiab lubricate cov khoom txav mus los, thiab ua kom cov cuab yeej ua haujlwm zoo.
Cov xim coated steel kauj yog lub teeb hauv qhov hnyav, zoo nkauj zoo nkauj, thiab muaj kev ua haujlwm zoo los tiv thaiv corrosion, thiab tuaj yeem ua tiav ncaj qha. Cov xim feem ntau muab faib ua grey, dej hiav txwv xiav, cib liab, thiab lwm yam Nws yog siv hauv kev tshaj tawm, kev tsim kho, kho kom zoo nkauj, khoom siv hauv tsev, khoom siv hluav taws xob, rooj tog kev lag luam thiab kev lag luam tsheb thauj mus los. Raws li ISO 9001, SGS certified tuam txhab, peb muaj peb lub Hoobkas npog 35000 square meters, pab ntau tshaj 500 tus neeg ua haujlwm. Muaj 30 cov kab ntau lawm, 500tons ib hnub ib kab, nrog rau txhua xyoo tso zis 5,400,000 tons. Nrog 20 xyoo ntawm kev tsim thiab xa tawm kev paub, peb tau ua haujlwm rau peb cov neeg siv khoom thiab cov haujlwm hauv South America, Southeast Asia, Central Asia, Middle East, Africa thiab North Europe lag luam.
Q: Alloy Steel yog dab tsi?
Q: Dab tsi yog qhov sib xyaw ntawm Alloy Steel?
Q: Cov pa roj carbon ntau npaum li cas hauv Alloy Steel?
Q: Alloy Steel Ua li cas?
Q: Alloy Steel siv qhov twg?
Q: Dab tsi yog cov khoom ntawm Alloy Steel?
Q: Dab tsi kub yuav tsum tau rau Harden Alloy Steel?
Q: Ntev npaum li cas yog alloy steel?
Q: Lub hom phiaj ntawm alloy steel yog dab tsi?
Q: Puas yog alloy steel khoov tau yooj yim?
Q: Dab tsi yog qhov zoo ntawm cov hlau alloy?
Q: Qhov feem pua ntawm steel yog alloy?
Q: Dab tsi qib yog alloy steel?
Q: Dab tsi yog cov yam ntxwv ntawm cov hlau alloy?
Q: Dab tsi yog ob lub ntsiab lus tseem ceeb hauv cov hlau alloy?
Q: Koj puas paub cov hlau alloys li cas?
Q: Dab tsi yog qhov sib txawv ntawm cov hlau thiab hlau alloy?
Q: Lub zog tensile ntawm alloy steel yog dab tsi?
Q: Dab tsi yog xim hlau alloy?
Raws li ib qho ntawm cov kws tshaj lij alloy steel tuam ntxhab thiab cov muag khoom hauv Suav teb, peb tau tshwj xeeb los ntawm cov kev pabcuam zoo thiab cov nqi sib tw. Thov so assured mus yuav cov khoom zoo siab alloy steel rau muag ntawm no los ntawm peb lub hoobkas. Tiv tauj peb rau pricelist thiab dawb qauv.
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