Kev Lag Luam Mining
Kev Tshawb Fawb Txog Kev Lag Luam Keeb Kwm thiab Kev Siv Tshuab Laser Cladding
1. Kev Tshawb Fawb Txog Keeb Kwm Kev Lag Luam
1. Kev Cuam Tshuam ntawm Ib Puag Ncig Ua Haujlwm Hnyav rau Cov Khoom Siv
Cov chaw khawb thee hauv av muaj teeb meem loj heev rau kev ua haujlwm ntawm cov tshuab. Nrog rau cov av noo feem ntau tshaj 90% thiab muaj cov pa roj corrosive xws li H₂S thiab SO₂, cov khoom siv hlau raug kev xeb electrochemical sai dua. Piv txwv li, cov thooj voos kheej kheej hydraulic, uas yog qhov tseem ceeb rau kev tswj qhov av kom ruaj khov, feem ntau yuav muaj xeb ntawm qhov chaw uas ua rau kev ua haujlwm ntawm kev sib khi tsis zoo, ua rau lub kaw lus hydraulic tsis ua haujlwm. Tsis tas li ntawd, cov hmoov av thee (Mohs hardness 3-4) ua haujlwm ua cov neeg ua haujlwm abrasive, ua rau muaj kev hnav hnyav rau cov khoom sib kis xws li sprockets thiab scrapers. Cov hmoov av thee ceev ceev tuaj yeem txo lub neej ua haujlwm ntawm cov khoom no txog li 40% piv rau cov chaw huv dua.
2. Cov txheej txheem ntawm kev ua tsis tiav ntawm cov khoom
(1) Kev qaug zog hnav: Kev thauj khoom voj voog rau ntawm cov sprockets thiab scrapers ua rau muaj cov kab nrib pleb me me ntawm cov nto. Tom qab kwv yees li 1,000 teev ua haujlwm, cov kab nrib pleb no tuaj yeem nkag mus tob txog 0.5 hli, ua rau cov khoom tawg thiab ua haujlwm tsis zoo.
(2) Kev Txheej Txheem: Cov txheej txheem electroplated ib txwm muaj (piv txwv li, chrome plating nyuaj) sib txuas tsis zoo nrog cov substrates (20-30 MPa), ua rau lawv yooj yim tev tawm thaum muaj kev cuam tshuam. Qhov sib piv, laser cladding muab lub zog sib txuas ntawm 400-600 MPa, ua kom ntseeg tau tias muaj kev sib txuas ntev.
2. Cov txiaj ntsig ntawm Laser Cladding Technology
Sab Nraud Laser Cladding
Cov txheej txheem no zoo heev hauv kev npaj cov txheej tiv taus kev hnav thiab kev xeb ntawm cov khoom siv ntawm lub ncej xws li lub tog raj kheej thiab cov pas nrig piston. Cov txiaj ntsig tseem ceeb suav nrog:
● Tus Nqi Dilution Tsawg: Tsawg dua 5%, khaws cia cov khoom qub.
● Kev Hloov Pauv Tsawg Kawg Nkaus: Cov cheeb tsam uas raug cua sov feem ntau yog
● Kev Siv Khoom Zoo: Cov nqi siv hmoov ntau tshaj 90%, txo cov nqi piv rau cov plating ib txwm muaj.
● Qhov Zoo Ntawm Qhov Chaw: Ra ≤ 6.3μm tiav, tshem tawm qhov xav tau kev ua tiav tom qab hauv ntau kis.
Sab Hauv Phab Ntsa Laser Cladding
Zoo tagnrho rau cov hydraulic cylinders thiab piston rods, txoj kev no ua rau siv tau ntau yam alloy coatings (piv txwv li, stainless hlau, nickel-based alloys) nrog thicknesses xws li 0.5mm txog 3mm. Piv txwv li:
● Cov Txheej Txheem Hlau Stainless: Muab 5 zaug siab dua corrosion tsis kam dua li cov hlau liab qab hauv cov chaw acidic.
● Cov Khoom Siv Nickel Uas Muaj Cov Khoom Sib Xyaws: Txhim kho qhov nyuaj ntawm 200 HV mus rau ntau dua 600 HV, txhim kho kev hnav tsis kam.
Cov Nto Nto Laser Cladding
Tsim los rau cov qauv geometries nyuaj xws li sprockets thiab picks, cov txheej txheem no muab:
● Kev Tswj Xyuas Kev Hloov Pauv: Siv 5-axis CNC systems kom ua tiav cov txheej tuab sib npaug (± 0.1 hli) ntawm cov chaw tsis sib xws.
● Lub zog sib txuas siab: Kev sib txuas ntawm cov hlau ua kom ntseeg tau tias muaj kev tiv taus cov khoom hnyav. Piv txwv li, cov khaubncaws sab nraud povtseg ntawm cov picks tseem ruaj khov txawm tias nyob hauv qab 200 J ntawm lub zog cuam tshuam.
3. Cov Kev Ntsuas Txuj Ci thiab Cov Kev Ntsuas Kev Ua Tau Zoo
| Cov Qauv | Sab Nraud Cladding | Sab Hauv Phab Ntsa Cladding | Cov Nto Nto Nkaus |
| Lub zog laser (kW) | 2-4 | 1.5-3 | 1.2-3 |
| Kev Ceev Luam theej (hli/s) | 50-200 | 30-120 | 40-150 |
| Tus nqi pub hmoov (g / min) | 5-25 | 3-15 | 4-20 |
| Txheej Hardness (HV) | 400-1200 | 350-1000 | 450-1100 |
| Lub zog sib txuas (MPa) | >400 | >350 | >450 |
4. Kev Kawm Txog Cov Ntaub Ntawv: Kev Kho Lub Tog Raj Kheej Hydraulic Prop
Ib lub chaw khawb thee hauv xeev Shanxi tau tshaj tawm tias tus nqi hloov lub tog raj kheej tau txo qis 65% tom qab siv laser cladding. Cov txheej txheem tau kho cov tog raj kheej corroded (thawj φ140mm × 2.5m) kom rov qab zoo li qub, nrog rau txheej clad (NiCrBSi alloy, 1.2mm tuab) qhia txog:
● 86% qis dua qhov sib txhuam coefficient dua li cov hlau qub.
● Siv tau ntev dua 3 zaug hauv kev sim kev hnav khaub ncaws.
● 100% dhau tus nqi hauv kev sim sealing siab (35 MPa).
5. Cov txiaj ntsig ntawm ib puag ncig thiab kev lag luam
● Kev Txuag Khoom Siv: Laser cladding siv 70% tsawg dua alloy hmoov piv rau cov txheej txheem surfacing ib txwm muaj.
● Kev Siv Hluav Taws Xob Zoo: Txo kev siv hluav taws xob los ntawm 40% thaum lub sijhawm kho.
● Kev Txo Qhov Pa Tawm: Tshem tawm cov pa roj carbon hexavalent chromium uas cuam tshuam nrog electroplating, ua raws li cov cai ib puag ncig nruj dua.
Xaus lus, laser cladding thev naus laus zis muab kev daws teeb meem dav dav los tawm tsam kev puas tsuaj ntawm cov khoom hauv cov chaw khawb av hnyav, muab kev ua tau zoo dua thiab kev ruaj khov piv rau cov txheej txheem ib txwm muaj.
Daim Ntawv Thov Rooj Plaub
Sprocket laser cladding
Lub tog raj kheej sab hauv qhov laser cladding
Lub tog raj kheej sab nraud lub voj voog laser cladding