Khoom Taw Qhia

GGG70 pob hauv av cam khwb cia hlau poob ciab peev casting

Nyob rau hauv cov khoom precision ntawm ductile hlau castings, grey hlau castings, imported ductile hlau castings, siab kub kuj ductile hlau castings, siab zog ductile hlau castings, high precision ductile hlau castings, siab hardness ductile hlau castings. Northwest Tuam Tshoj tus loj tshaj plaws ductile hlau foundry, muaj zog technical force, kev ncaj ncees qhauj, manufacturers "ductile hlau qws quote", "ductile hlau qws manufacturers" ncaj muag, "ductile hlau qws manufacturers" / tus neeg muag khoom ntawm ntau lub ntiaj teb nto moo vuam cov ntaub ntawv, lub tuam txhab specializes nyob rau hauv ntau lawm thiab muag khoom ntawm ntau yam qauv thiab specifications tshwj xeeb welding rods, khoom ntau yam yog tiav, txhim khu kev qha zoo, Nws yog dav siv nyob rau hauv petrochemical kev lag luam, hlau thiab hlau metallurgy, machinery manufacturing, railway choj, roj thiab roj pipelines, tsheb thiab ships. , boiler hlab ntsha, hluav taws xob fais fab thiab dej txuag, aerospace, mining siv thiab ntau lwm yam. Nodular castings quotes ", "Nodular castings manufacturers" ncaj qha muag "nodular castings manufacturers" / Ntxiv tus nqi nce txij li thaum lub Peb Hlis Ntuj kawg thiab kev poob qis hauv cov tuam txhab hlau tsis ntev los no yuav hloov lub zog ntawm kev rov qab los, thiab kev poob qis hauv Suav steel tuam ntxhab pib. kom dhau mus rau cov teb chaws tsim kho European steel kev lag luam cov nyiaj tau los nyob rau hauv ib nrab xyoo tas los yuav tsum tsis txhob rov ua dua thiab kev nce siab ntawm cov khoom siv raw khoom yuav tsum nyob nruab nrab ntawm lub sijhawm nruab nrab, nws tus thawj coj tau hais tias Kev lag luam steel hauv Europe thiab cov Tebchaws Asmeskas tau rov qab los ntawm kev poob qis hauv ib nrab xyoo tas los, thiab ArcelorMittal, lub ntiaj teb cov tuam txhab hlau loj tshaj plaws, tau kwv yees ua ntej lub hlis no tias cov nyiaj tau los ntawm peb lub hlis thib ob yuav ua rau muaj kev kub ntxhov siab.

Nws tau hais tias tus nqi ntawm kev xa tawm steel los ntawm Tuam Tshoj mus rau Tebchaws Europe suav txog ntau dua 10% ntawm cov khoom lag luam, thiab cov txiaj ntsig kev lag luam ntawm kev lag luam feem ntau yog kwv yees li 5%. Qhov no tseem ceeb tshaj qhov xwm txheej hauv Tebchaws Europe. "Eighty feem pua ​​​​ntawm cov teb chaws Europe ua tau zoo," nws hais. Qhov no qhia tau hais tias qhov txaus ntshai ntawm cov qauv kev poob qis hauv ib nrab ntawm lub xyoo yog qhov txwv heev, "nws hais. European cov khoom lag luam tseem raug tswj hwm." Peb muaj tsawg tshaj li tsib lub lis piam 'tus nqi ntawm cov khoom muag muaj. Cov khoom muag txhua xyoo ntawm cov teb chaws Europe tsis tau tshaj li ib txwm muaj. , Nodular cam khwb cia hlau castings quote "," Nodular cam khwb cia hlau castings tuam ntxhab " muag ncaj qha " nodular cam khwb cia hlau castings tuam ntxhab " / Qee lub teb chaws txawm qis dua li ib txwm muaj. Cov nroj tsuag tej zaum yuav raug kev kub ntxhov nyob rau lub caij ntuj sov, uas yog ib txwm muaj rau kev lag luam steel, tab sis txij lub Cuaj Hli ntawm qhov tseeb lawv yuav tsum tau nce, Eder tau hais. "Lub xyoo no zoo li yuav txawv ntawm xyoo tas los. Lub caij ntuj sov xyoo tas los, thiab kev poob qis txuas ntxiv mus txog rau lub Kaum Ib Hlis Kuv xav tias txoj hauv kev ntawm qhov tshwm sim no tsawg heev "Ductile hlau bar quote" Eder kuj tau hais tias nws tsis muaj kev txhawj xeeb txog kev lag luam hauv Tebchaws Europe, txawm tias qee lub tebchaws tau txais nyiaj pab. tab sis Tebchaws Meskas muaj kev txhawj xeeb me ntsis. " Yog tias Tebchaws Meskas tsis rov qab los rau lub sijhawm luv luv, nws yuav muaj kev cuam tshuam loj rau kev lag luam thoob ntiaj teb. Nyob rau hauv lub sij hawm ntev, Eder ntseeg hais tias tam sim no raw khoom tsim, tshwj xeeb tshaj yog hlau ore producers, tsis muaj kev ruaj ntseg muab qhov kev cia siab ntawm steel zus tau tej cov kev loj hlob nyob rau hauv Tuam Tshoj thiab qhov tseeb hais tias ntau hlau ore ntau lawm yog los ntawm kwj. " Nyob rau hauv 2012 los yog thaum ntxov 2013. (hlau ore) cov neeg tsim khoom yuav tsum poob qis, "nws hais. Tuam Tshoj Hlau Bar Manufacturers

Nyob rau hauv lub precision mov ntawm ductile hlau, grey hlau

Nodular cam khwb cia hlau

Lub ntsiab lus dav dav rau cov alloys feem ntau yog hlau, carbon, thiab silicon. Nyob rau hauv cov alloys, cov ntsiab lus carbon ntau tshaj qhov uas yuav khaws cia rau hauv cov khoom austenitic ntawm eutectic kub. Cam khwb cia hlau yog ib lo lus dav dav rau cov hlau uas muaj feem ntau ntawm cov hlau, carbon, thiab silicon. Nyob rau hauv cov alloys, cov ntsiab lus carbon ntau tshaj qhov uas yuav khaws cia rau hauv cov khoom austenitic ntawm eutectic kub.

Hlau-carbon alloys muaj ntau tshaj 2% carbon. Muaj cam khwb cia hlau feem ntau muaj 2% mus rau 4% carbon. Carbon muaj nyob rau hauv cam khwb cia hlau feem ntau nyob rau hauv daim ntawv ntawm graphite, thiab tej zaum nyob rau hauv daim ntawv ntawm cementite. Ntxiv rau carbon, cam khwb cia hlau tseem muaj 1% mus rau 3% silicon, nrog rau manganese, phosphorus, sulfur thiab lwm yam khoom. Alloy cam khwb cia hlau kuj muaj nickel, chromium, molybdenum, txhuas, tooj liab, boron, vanadium thiab lwm yam khoom. Carbon thiab silicon yog cov ntsiab lus tseem ceeb uas cuam tshuam rau microstructure thiab cov khoom ntawm cam khwb cia hlau.

Cam khwb cia hlau tuaj yeem muab faib ua

① Grey cam khwb cia hlau. Cov ntsiab lus carbon yog siab (2.7% ~ 4.0%), cov pa roj carbon feem ntau muaj nyob rau hauv daim ntawv ntawm flake graphite, qhov tawg yog grey, hu ua grey hlau. Tsawg melting point (1145 ~ 1250 degree), me me shrinkage thaum lub sij hawm solidification, compressive zog thiab hardness ze rau carbon steel, zoo poob siab absorbing. Siv los tsim cov cuab yeej siv lub txaj, lub tog raj kheej, lub thawv thiab lwm yam khoom siv.

② Dawb cam khwb cia hlau. Cov ntsiab lus ntawm carbon thiab silicon yog tsawg, cov pa roj carbon feem ntau muaj nyob rau hauv daim ntawv ntawm cementite, thiab cov pob txha yog nyiaj-dawb. Shrinkage thaum solidification yog loj, uas yog ib qho yooj yim los tsim shrinkage qhov thiab tawg. High hardness, brittleness, tsis tuaj yeem tiv taus qhov cuam tshuam. Nws feem ntau yog siv los ua ib qho dawb paug rau malleable cam khwb cia hlau thiab ua rau hnav-resistant qhov chaw.

③ malleable cam khwb cia hlau. Tau los ntawm cov hlau cam khwb cia dawb tom qab kho annealing, cov graphite tau muab faib ua pawg thiab flocculation, hu ua hlau tawv. Nws muaj cov qauv microstructure, puas ua haujlwm, zoo plasticity thiab toughness. Nws yog siv los tsim cov khoom nrog cov duab nyuaj uas tuaj yeem tiv taus cov khoom muaj zog dynamic.

④ Nodular hlau. Grey cam khwb cia hlau molten hlau yog tau los ntawm spheroidizing kev kho mob, thiab cov precipitated graphite yog spherical, hu ua ductile hlau. Piv nrog cov grey cam khwb cia hlau zoo tib yam, nws muaj zog dua, zoo dua toughness thiab plasticity. Siv nyob rau hauv kev tsim cov combustion engine, nws pib qhov chaw thiab ua liaj ua teb machinery.

⑤ vermicular graphite cam khwb cia hlau. Cov graphite precipitated los ntawm grey cam khwb cia hlau molten hlau yog worm-zoo li. Cov khoom siv kho tshuab zoo ib yam li nodular cam khwb cia hlau, thiab cov khoom pov thawj yog nruab nrab ntawm grey cam khwb cia hlau thiab nodular cam khwb cia hlau. Siv los ua qhov chaw rau tsheb.

⑥ Alloy cam khwb cia hlau. Ordinary cam khwb cia hlau yog tau los ntawm kev ntxiv cov alloying tsim nyog (xws li silicon, manganese, phosphorus, npib tsib xee, chromium, molybdenum, tooj liab, txhuas, boron, vanadium, tin, thiab lwm yam). Alloying cov ntsiab lus ua rau cov qauv matrix ntawm cam khwb cia hlau hloov, kom nws muaj qhov sib xws thaum tshav kub kub, hnav tsis kam, corrosion kuj, kub tsis kam los yog tsis muaj cov khoom sib nqus. Siv nyob rau hauv kev tsim cov mining, tshuaj machinery thiab cov twj paj nruag, twj paj nruag thiab lwm yam.

Classification ntawm cam khwb cia hlau

Classification Method Kev piav qhia ntawm lub npe kev faib tawm

Muab faib los ntawm cov xim tawg

(1) Feem ntau los yog tag nrho cov pa roj carbon monoxide nyob rau hauv no cam khwb cia hlau yog nyob rau hauv daim ntawv ntawm ib tug dawb lub xeev ntawm flake graphite, nws puas yog tsaus grey, muaj ib tug tej yam txhua yam khoom thiab zoo txiav kev ua tau zoo, lug siv nyob rau hauv kev lag luam.

(2) Dawb cam khwb cia hlau dawb cam khwb cia hlau yog cov hlau-carbon alloy uas tsis muaj lossis yuav luag tsis muaj graphite hauv lub koom haum, nws cov pob txha yog dawb thiab ci, tawv thiab nkig, tsis tuaj yeem txiav, thiab tsis tshua siv ncaj qha rau hauv kev lag luam. ua mechanical qhov chaw. Vim nws qhov siab tawv thiab hnav tsis kam, nws tseem hu ua chilled cam khwb cia hlau lossis chilled cam khwb cia hlau

(3) pitted cam khwb cia hlau pitted cam khwb cia hlau yog ib hom cam khwb cia hlau ntawm dawb cam khwb cia hlau thiab grey cam khwb cia hlau, nws puas yog grey thiab dawb dotted, tsis zoo, tsis tshua muaj siv.

Los ntawm tshuaj muaj pes tsawg leeg

(1) Ordinary cam khwb cia hlau yog hais txog cam khwb cia hlau uas tsis muaj cov ntsiab lus alloying, xws li grey cam khwb cia hlau, malleable cam khwb cia hlau, ductile cam khwb cia hlau, thiab lwm yam

(2) Alloy cam khwb cia hlau yog qib siab cam khwb cia hlau npaj los ntawm kev ntxiv qee cov ntsiab lus alloying rau cov cam khwb cia zoo tib yam los txhim kho qee cov khoom tshwj xeeb. Xws li ntau yam corrosion kuj, tshav kub tsis kam, hnav tsis kam ntawm cov khoom tshwj xeeb ntawm cam khwb cia hlau

Raws li txoj kev tsim khoom thiab kev ua haujlwm ntawm lub koom haum

(1) Ib txwm grey cam khwb cia hlau saib "grey cam khwb cia hlau"

(2) Inoculation cam khwb cia hlau Qhov no yog nyob rau hauv lub hauv paus ntawm grey cam khwb cia hlau, siv "metamorphic kev kho mob", kuj hu ua metamorphic cam khwb cia hlau. Nws lub zog, plasticity thiab toughness yog zoo dua li cov hlau cam khwb cia hlau dav dav, thiab lub koom haum zoo sib xws. Nws yog tsuas yog siv nyob rau hauv kev tsim cov loj castings nrog high mechanical zog thiab loj cross-section loj hloov

(3) Malleable cam khwb cia hlau Malleable cam khwb cia hlau yog ua los ntawm ib tug tej yam muaj pes tsawg leeg ntawm dawb cam khwb cia hlau los ntawm graphitization annealing, muaj siab toughness dua grey cam khwb cia hlau, los yog ductile cam khwb cia hlau. Nws tsis tuaj yeem raug forged thiab feem ntau yog siv los ua cov castings uas tiv taus qhov cuam tshuam

(4) nodular hlau hu ua ductile hlau. Nws yog tau los ntawm kev ntxiv ib qho nyiaj ntawm spheroidizing tus neeg sawv cev thiab inking tus neeg sawv cev rau cov kua hlau ua ntej casting los txhawb cov crystallization ntawm spheroidal graphite. Piv nrog rau cov hlau, ntxiv rau plasticity, toughness yog me ntsis qis, lwm yam khoom yog nyob ze, yog ib qho khoom zoo heev nrog rau qhov zoo ntawm cov hlau thiab cam khwb cia hlau, dav siv hauv mechanical engineering.

(5) Kev ua tau zoo tshwj xeeb cam khwb cia hlau Qhov no yog ib hom cam khwb cia hlau nrog qee yam ntxwv, raws li kev siv sib txawv, tuaj yeem muab faib ua cov hlau cam khwb cia hlau, kub-resistant cam khwb cia hlau, corrosion resistant cam khwb cia hlau thiab lwm yam. Feem ntau ntawm lawv yog cov hlau cam khwb cia hlau, uas yog dav siv nyob rau hauv mechanical manufacturing

Cam khwb cia hlau - txheej txheem kev kho cua sov

1. Kev nyuaj siab nyem annealing Duemus rau qhov tsis sib xws ntawm phab ntsa thickness ntawm lub casting, nyob rau hauv cov txheej txheem ntawm cua sov, txias thiab theem hloov, yuav muaj ib tug nyhuv quab yuam thiab lub koom haum kev nyuaj siab. Tsis tas li ntawd, qhov loj me kuj tseem ua rau muaj kev ntxhov siab nyob tom qab machining, thiab tag nrho cov kev ntxhov siab sab hauv yuav tsum raug tshem tawm. Cov cua sov li niaj zaus ntawm kev ntxhov siab annealing yog 500 ~ 550 degree, lub sij hawm tuav yog 2 ~ 8h, thiab tom qab ntawd rauv cua txias (grey hlau) lossis cua txias (cov hlau nplaum). Kev siv cov txheej txheem no tuaj yeem tshem tawm 90 mus rau 95% ntawm cov kev ntxhov siab sab hauv ntawm cov casting, tab sis cov qauv cam khwb cia hlau tsis hloov. Yog tias qhov kub siab tshaj 550 ° C lossis lub sijhawm tuav ntev dhau lawm, nws yuav ua rau graphitization, txo lub zog thiab hardness ntawm casting.

2. Tshem tawm qhov kub siab graphitization annealing ntawm cam khwb cia hlau dawb npoo

Thaum lub casting yog txias, qhov saum npoo thiab nyias ntu feem ntau tsim cov qhov dawb. Cov ntaub so ntswg dawb tawv thiab nkig, ua haujlwm tsis zoo, yooj yim rau flake. Yog li ntawd, txoj kev annealing (los yog normalizing) yuav tsum tau siv los tshem tawm cov ntaub so ntswg dawb. Cov txheej txheem annealing yog: cua sov rau 550-950 degree C rau 2 mus rau 5 h, thiab tom qab ntawd txias rau 500-550 degree C thiab tom qab ntawd cua txias. Thaum lub sij hawm kub kub tuav, lub hypercementite thiab eutectic cementite decompose rau hauv graphite thiab A, thiab nyob rau hauv lub tom ntej txias txheej txheem, lub thib ob cementite thiab eutectoid cementite kuj decompose thiab graphitization tshwm sim. Vim lub decomposition ntawm cementite, hardness txo, yog li txhim kho lub machinability.

3. Normalizing ntawm ductile hlau

Lub hom phiaj ntawm ductile hlau normalizing yog kom tau pearlite matrix qauv, thiab refine grain, uniform qauv, nyob rau hauv thiaj li yuav txhim kho lub mechanical zog ntawm castings. Qee lub sij hawm normalizing kuj yog qhov kev npaj ntawm ductile hlau nto quenching ntawm tus qauv, normalizing kub normalizing thiab tsis kub normalizing. Lub siab kub normalizing kub feem ntau tsis ntau tshaj 950 ~ 980 degree, thiab qhov kub tsis tshua muaj normalizing yog feem ntau rhuab mus rau lub co-folding kub ntau ntawm 820 ~ 860 degree . Tom qab normalizing, nws yog feem ntau yuav tsum tau ua plaub-tus neeg kev kho mob kom tshem tawm cov kev ntxhov siab nyob rau hauv lub sij hawm normalizing.

4. quenching thiab tempering ntawm ductile hlau

Txhawm rau txhim kho cov khoom siv hluav taws xob ntawm cov khoom siv hlau, qhov dav dav casting yog rhuab mus rau 30 ~ 50 degree C saum toj no Afc1 (Afc1 sawv cev rau qhov kawg kub tsim los ntawm A thaum cua sov), thiab quenched rau hauv cov roj tom qab tshav kub preservation kom tau martensitic qauv. . Txhawm rau kom txo qis cov kev ntxhov siab seem tom qab quenching, qhov dav dav quenching yuav tsum tau tempered, thiab qhov kub tsis tshua muaj tempering qauv yog tempered martensite ntxiv rau cov seem bainite thiab kheej kheej graphite. Cov qauv no muaj qhov hnav tsis zoo thiab yog siv rau cov khoom uas yuav tsum tau hnav tsis kam thiab siab zog. Lub tempering kub yog 350-500 degree, thiab cov qauv tempered yog tempered trootenite thiab kheej kheej graphite, uas yog haum rau tuab qhov chaw uas yuav tsum tau zoo hnav kuj thiab muaj tej yam zoo stability thiab elasticity. Lub tuam txhab Boyang - cov txuj ci muaj feem cuam tshuam ntau dua hauv cov hlau thiab hlau txuj ci network. Qhov kub-kub kub kub yog 500-60D degree, tempered qauv yog tempered Soxlet rau kheej kheej graphite, thiab cov qauv tempered yog tempered Soxlet rau kheej kheej graphite nrog zoo toughness thiab lub zog ua ke yog 500-60D degree , thiab cov qauv tempered yog tempered Soxlet rau spherical graphite, uas muaj ib tug zoo ua ke ntawm toughness thiab lub zog, yog li nws yog dav siv nyob rau hauv ntau lawm.

5. Multi-kub quenching ntawm ductile hlau

Cov hlau nplaum tuaj yeem tau txais lub zog siab tom qab isothermal quenching, thiab muaj cov yas zoo thiab tawv. Kev xaiv ntawm ntau qhov ntsuas kub quenching cua sov yog tsuas yog ua kom cov qauv qub tag nrho A, tsis muaj qhov seem F, tab sis kuj kom tsis txhob muaj kev loj hlob ntawm A grain. Cov cua kub cua sov feem ntau yog 30 ~ 50 degree saum toj no Afc1, thiab cov isothermal kho kub yog 0 ~ 350 degree kom paub meej tias cov qauv bainite qis nrog cov khoom siv kho kom zoo. Tom qab isothermal quenching, σb=1200 ~ 1400MPa, k=3 ~ 3.6J/cm2, HRC=47 ~ 51. Txawm li cas los xij, yuav tsum tau them nyiaj rau kev ntxiv cov txheej txheem tempering tom qab isothermal quenching.

6. Nto hardening

Txhawm rau txhim kho qhov tawv tawv, hnav tsis kam thiab qaug zog ntawm qee qhov castings, qhov tawv tawv tuaj yeem siv. Grey cam khwb cia hlau thiab ductile hlau castings yuav nto quenched. High (medium) zaus induction cua sov nto quenching thiab hluav taws xob tiv tauj nto quenching feem ntau yog siv.

7. Kev kho cua sov

Rau cov castings uas yuav tsum tau hnav tsis kam los yog oxidation tsis kam thiab corrosion kuj, tshuaj kho cua sov txheej txheem zoo ib yam li hlau yuav siv tau, xws li roj chlorination, chlorination, boriding, sulfurizing thiab lwm yam kev kho mob.

Grey cam khwb cia hlau

GB Tuam Tshoj HT100 HT150 HT200 HT250 HT300 HT350

JIS Japanese FC100 FC150 FC200 FC250 FC300 FC350

KS Kauslim GC100 GC150 GC200 GC250 GC300 GC350

AWS USA NO.20 NO.25 NO.30 NO.35 NO.40 NO.45

50 Nr. 55 Nr. 60

UNS F11401 F11701 F12101 F12801 F13101 F14101 USA

Nodular cam khwb cia hlau

GB Tuam Tshoj QT400-18 QT400-15 QT450-10 QT500-7 QT600-3 QT700-2 QT800-2 QT900-2

JIS Nyiv FCD350-22 FCD400-18 FCD400-15 FCD450-10 FCD500-7 FCD600-3 FCD700-2 FCD800-2

KS Kauslim GCD370 GCD400 GCD450 GCD500 GCD600 GCD700 GCD800

AWS American 40-60-18, 65-45-12 80-55-06, 100-70-03, 120-90-02

UNS F32800 F33100 F33800 F34800 F36200 USA

Nta: Ua kom tiav cov khoom specifications, nyiam tus nqi, ntim tsis zoo, ntshiab tooj liab, zoo ncaj, cov khoom loj, tuaj yeem muab cov ntaub ntawv pov thawj thiab SGS daim ntawv tshaj tawm.

Specifications tuaj yeem kho tau, rau lub tuam txhab txais tos koj hu, peb yuav ua tsaug rau koj.

Zhongwei Precision muaj cov kev pabcuam hauv qab no

Detection Systems

Copper Silica Sol Investment Casting

Peb yog cov chaw tsim khoom ntawm "GGG70 pob milled hlau castings", yog tias koj xav tau cov ntaub ntawv ntxiv thov hu rau peb!