Koj puas tau pom?
Cua zog yog ib qhov ceev tshaj plaws - kev loj hlob ntawm lub zog tauj dua tshiab, tab sis nws lub sijhawm ntev - tau txais txiaj ntsig yog qhov nyuaj los ntawmhnav hnyav, corrosion, qaug zog, thiab siab - nqi hloov ntawm cov khoom tseem ceeb. Cov khoom xws li lub ntsiab ncej, gearbox bearings, lub ntiaj teb cov neeg nqa khoom, flanges, thiab hydraulic thooj voos kheej kheej ua haujlwm nyob rau hauv cov khoom hnyav, hloov kev ntxhov siab, tshuaj tsuag ntsev, thiab cov xwm txheej ceev sib txawv, ua rau tsis tu ncua sijhawm thiab kev saib xyuas kim. Nyob rau hauv xyoo tas los no,laser cladding thev naus laus zis tau dhau los ua tus nqi tshaj plaws - siv tau thiab txhim khu kev qha rau kev kho cua ua liaj ua teb thiab txhim kho qhov chaw.
1. Dab tsi yogLaser Cladding& Vim li cas cua fais fab xav tau nws?
Laser cladding siv lub siab- lub zog laser beam kom yaj cov hmoov hlau thiab fuse nws metallurgically rau ntawm qhov chaw ua haujlwm, ua kom tuab, qis-dilution, siab- hardness txheej nrog lub zog sib txuas (Ntau dua lossis sib npaug li 550 MPa). Tsis zoo li ib txwm siv vuam lossis thermal txau, laser cladding nta cov khoom siv hluav taws xob tsawg, cov cua sov me me- thaj chaw cuam tshuam, kev deformation tsawg, tswj cov tuab tuab (0.5-3 hli rau ib txheej), thiab kev siv hmoov siab (Ntau dua lossis sib npaug li 90%).
Nyob rau hauv lub zog cua, cov kev kho ib txwm siv feem ntau ua rau ncej dabtsi yog khoov, tawg, los yog softening ntawm lub hauv paus cov ntaub ntawv, thaum hloov cov nqi rau ib lub ntsiab ncej yuav ntau tshaj $50,000-$100,000 nrog txhuas lub sij hawm ntawm 8-12 lub lis piam. Laser cladding txo cov nqi kho rau 30-50% ntawm cov khoom tshiab thiab ua kom luv luv rau 7-10 hnub, ua rau nws zoo tagnrho rau cua ua liaj ua teb O&M.
2. Core Machine Parameters & Lawv lub ntsiab lus
Yuav kom ua tiav qhov ruaj khov, siab - zoo cladding rau cov khoom cua, koj yuav tsum nkag siab thiab ua kom zoo dua cov ntsiab lus tseem ceeb no:
Laser fais fab (3-6 kW rau cua kev lag luam) txiav txim siab melting peev xwm thiab deposition efficiency. Rau 42CrMo lub ntsiab ncej, 5,000-6,000 W yog qhov raug; tsawg dhau ua rau tsis zoo fusion, siab dhau ua rau overheating thiab deformation.
Spot Diameter (2–8 mm) Tswj lub zog ceev. Cov me me (2-4 mm) rau cov cheeb tsam precision (cov rooj tog zaum); qhov loj me (6-8 mm) rau qhov loj (flanges, vaj tse).
Scanning Ceev (10-20 mm / s) Sib npaug ntawm cov khoom siv hluav taws xob thiab txheej txheej tuab. Cua shafts feem ntau khiav ntawm 10-15 mm / s kom tsis txhob tawg thiab ua kom muaj kev sib raug zoo.
Powder Feeding Rate (15–30 g / min) Sib phim lub zog laser. Ni-raws li hmoov rau lub ntsiab ncej: 15-20 g / min; tus nqi siab dua yuav tsis muaj - cov hmoov melted.
Overlap Rate (60-80%) cuam tshuam qhov smoothness. Kev sib tshooj siab dua txo roughness; cua qhov chaw feem ntau siv 70%.
Shielding Gas (Argon, 15-25 L / min) Tiv thaiv oxidation. Argon nyiam tshaj nitrogen rau Ni/Co-raws li hmoov.
3. Cua Power Application Scenarios & Recommendations
Cov khoom sib txawv xav tau kev daws teeb meem cladding:
Main Shafts (42CrMo/34CrNiMo6) Teeb meem: phau ntawv hnav, corrosion, micro-cracks.Recommendation: 5–6 kW laser, Ni-raws li hmoov (Ni60/NiCrMo), 0.5–1 mm rau ib txheej, 10–15 mm/s ceev. Restores txoj kab uas hla kam rau ua ± 0.02 hli.
Gearbox Bearings & RacesProblem: pitting, fretting, hnav.Kev pom zoo: 3-4 kW laser, Stellite 6 los yog NiCrW hmoov, me me (2-3 hli), 70-80% sib tshooj. Hardness mus txog HRC 58-62.
Planet Carriers & Housings (QT700/ cam khwb cia hlau) Teeb meem: siab torque hnav, deformation.Cov lus pom zoo: 4–5 kW laser, Ni-raws li alloy, loj qhov chaw (6–8 mm), 15–20 mm/s. Ua ntej yuav txo qis dilution (<3%).
Hydraulic Lub tog raj kheej & Piston RodsProblem: corrosion, scoring, to.Recommendation: 3-4 kW laser, Inconel 625 los yog stainless hlau hmoov, daim iav tiav tom qab cladding. Extens lub neej kev pab cuam los ntawm 3-5 zaug.
4. Cov kev xav tsis zoo nyob rau hauv Cua Fais Fab Laser Cladding
Tswvyim 1: Lub zog laser siab dua=zoo dua qhov tseeb: Ntau lub zog ua rau hmoov vaporization, porosity, thiab deformation. Ntau cov cua ua liaj ua teb puas 42CrMo shafts los ntawm kev siv 8 kW lasers; 3-6 kW yog qhov zoo rau feem ntau cov cua tshuab.
Tswvyim 2: Txhua yam nickel hmoov ua haujlwm rau shaftsFact: Ordinary Ni hmoov muaj kev qaug zog tsis zoo. Cua shafts xav tau NiCrMo lossis Ni60 nrog Cr / Mo / W cov ntsiab lus los tiv thaiv kev ntxhov siab.
Tswvyim 3: Cladding tuaj yeem kho qhov sib sib zog nqus tawg yam tsis tau ua ntej-kev kho mobFact: Cov kab nrib pleb tob dua 2 hli xav tau kev sib tsoo + kev tshuaj xyuas ultrasonic + ua ntej- cua sov (150-200 degree) ua ntej cladding; txwv tsis pub, kab nrib pleb yuav propagated.
Tswvyim 4: Cladded yam tsis xav tau tom qab-processingFact: Cua Cheebtsam xav tau CNC tig / sib tsoo (± 0.02 hli kam rau ua) + qis- kub tempering (200–300 degree) + UT / PT tshuaj xyuas kom tau raws li cov qauv OEM.
5. Cov ntsiab lus & cov lus pom zoo
Laser cladding yog qhov txhim khu kev qha tshaj plaws thiab tus nqi- siv tshuab zoo rau kev kho cua sov tiv thaiv thiab ntxiv dag zog. Txhawm rau kom ROI ntau tshaj:
①.Match fais fab rau qhov loj me:3-4 kW rau qhov me me, 5-6 kW rau cov ncej loj thiab cov vaj tsev loj.
②.Siv cua- qib hmoov: NiCrMo rau shafts, Stellite 6 rau bearings, Inconel 625 rau lub tog raj kheej.
③.Ua raws li nruj ua ntej- thiab tom qab- kev kho mob: ntxuav qhov chaw, ua ntej- cua sov, txo kev ntxhov siab, thiab tsis yog- kuaj kev puas tsuaj.
④.Tsis txhob dhau- lub zog thiab dhau - nrawm: ua qhov tseem ceeb ntawm qhov qis qis (<3%) and minimal deformation.
Raws li cua turbines loj tuaj thiab kev pab cuam lub neej txuas ntxiv, laser cladding yuav dhau los ua cov cuab yeej siv rau kev kho cua ua liaj ua teb, pab cov neeg ua haujlwm txo nqi, nce sijhawm, thiab ua tiav cov hom phiaj ntsuab ntsuab.