Raws li cov cuab yeej siv tseem ceeb hauv qhov ntsuas qhov tseeb, granite slabs ' hnav tsis kam ncaj qha txiav txim siab lawv lub neej kev pab cuam, ntsuas qhov tseeb, thiab kev ruaj ntseg mus ntev. Cov hauv qab no piav qhia txog cov ntsiab lus tseem ceeb ntawm lawv cov kev hnav tsis kam los ntawm kev xav ntawm cov khoom siv, hnav mechanisms, kev ua tau zoo, kev cuam tshuam, thiab cov tswv yim tu.
1. Cov Khoom Siv Khoom Siv thiab Cov Txheej Txheem Hnav Ua Haujlwm
Zoo Hardness thiab Dense Structure
Granite slabs feem ntau yog tsim los ntawm pyroxene, plagioclase, thiab ib qho me me ntawm biotite. Los ntawm kev laus mus ntev, lawv tsim cov qauv zoo, ua tiav Mohs hardness ntawm 6-7, Shore hardness tshaj HS70, thiab compressive zog ntawm 2290-3750 kg / cm².
Qhov no ntom microstructure (kev nqus dej <0.25%) ua kom pom cov hlau sib txuas, uas muaj lub hardness ntawm tsuas yog HRC 30-40).
Natural Aging thiab Internal Stress Release
Granite slabs yog tsim los ntawm cov pob zeb zoo hauv av. Tom qab ntau lab xyoo laus, tag nrho cov kev ntxhov siab sab hauv tau raug tso tawm, ua rau zoo, ntov cov muaju thiab muaj kev sib dhos. Qhov kev ruaj ntseg no ua rau nws tsis tshua muaj kev cuam tshuam rau microcracks lossis deformation vim kev ntxhov siab hloov pauv thaum siv mus ntev, yog li tswj hwm nws cov hnav tsis kam dhau sijhawm.
II. Hnav Mechanisms thiab Performance
Main Wear Forms
Abrasive Hnav: Micro-txiav los ntawm cov khoom tawv zawv zawg lossis dov ntawm qhov chaw. Granite lub siab hardness (sib npaug rau HRC> 51) ua rau nws 2-3 zaug ntau resistant rau abrasive hais dua cam khwb cia hlau, txo qhov tob ntawm nto khawb.
Adhesive Wear: Cov ntaub ntawv hloov pauv tshwm sim ntawm qhov chaw sib cuag hauv qhov siab. Granite cov khoom tsis yog xim hlau (tsis yog hlau nplaum thiab tsis yog yas deformation) tiv thaiv hlau-rau-hlau adhesion, uas ua rau qhov zero hnav tus nqi.
Fatigue Hnav: Nto tev tawm los ntawm kev ntxhov siab cyclic. Granite lub siab elastic modulus (1.3-1.5 × 10⁶kg / cm²) thiab tsis tshua muaj dej nqus (<0.13%) muab kev qaug zog zoo heev, tso cai rau saum npoo kom tswj tau daim iav zoo li gloss txawm tias tom qab siv mus ntev.
Cov ntaub ntawv ua tau zoo
Kev ntsuam xyuas qhia tau hais tias granite slabs tsuas yog 1/5-1/3 hnav ntawm cam khwb cia hlau slabs nyob rau hauv tib yam kev ua haujlwm.
Qhov saum npoo roughness Ra tus nqi tseem nyob ruaj khov nyob rau hauv 0.05-0.1μm ntau lub sijhawm ntev, ua tau raws li Chav Kawm 000 qhov yuav tsum tau ua kom raug (flatness kam rau ua ≤ 1 × (1 + d / 1000)μm, qhov twg d yog kab pheeb ces kaum ntev).
III. Core Advantages of Wear Resistance
Tsawg Friction Coefficient thiab Self-Lubrication
Granite lub ntsej muag du, nrog cov coefficient ntawm kev sib txhuam ntawm tsuas yog 0.1-0.15, muab kev tiv thaiv tsawg heev thaum ntsuas cov cuab yeej swb hla nws, txo tus nqi hnav.
Granite cov roj tsis muaj xwm txheej tshem tawm cov khoom siv thib ob uas tshwm sim los ntawm cov plua plav adsorbed los ntawm cov roj nplua nyeem, ua rau cov nqi kho mob qis dua li cov cam khwb cia hlau slabs (uas yuav tsum tau siv cov roj los tiv thaiv xeb).
Resistant rau chemical Corrosion thiab xeb
Kev ua tau zoo heev (tsis muaj corrosion nyob rau hauv pH ntau ntawm 0-14), haum rau siv nyob rau hauv cov av noo thiab tshuaj ib puag ncig.
Rust-resistant zog tshem tawm qhov roughening los ntawm hlau corrosion, uas ua rau lub flatness hloov ntawm <0.005mm / xyoo tom qab siv mus ntev.
IV. Yam tseem ceeb cuam tshuam rau kev hnav tsis kam
Ambient Kub thiab Humidity
Qhov kub thiab txias (> ± 5 ° C) tuaj yeem ua rau thermal expansion thiab contraction, inducing microcracks. Qhov chaw ua haujlwm tau pom zoo yog qhov ntsuas kub ntawm 20 ± 2 ° C thiab av noo ntawm 40-60%.
High humidity (> 70%) accelerates noo noo nkag mus. Txawm hais tias granite muaj qhov nqus dej tsawg, qhov ntev ntawm cov av noo tuaj yeem txo qhov tawv tawv.
Load thiab tiv tauj kev nyuaj siab
Tshaj qhov ntsuas load (feem ntau 1/10 ntawm lub zog compressive) tuaj yeem ua rau hauv zos crushing. Piv txwv li, ib qho qauv ntawm granite slab muaj qhov ntsuas ntawm 500kg / cm². Hauv kev siv tiag tiag, kev cuam tshuam tsis ntev los no yuav tsum tau zam kom tsis txhob muaj kev cuam tshuam ntau tshaj qhov nqi no.
Kev sib cuag tsis sib xws kev ntxhov siab cuam tshuam nrawm rau hnav. Ib qho kev txhawb nqa peb-taw tes lossis cov qauv kev faib tawm sib npaug yog pom zoo.
Kev tu thiab tu
Tsis txhob siv cov txhuam hniav lossis cov cuab yeej tawv thaum ntxuav. Siv daim ntaub tsis muaj plua plav dampened nrog isopropyl cawv kom tsis txhob khawb qhov chaw.
Tsis tu ncua xyuas qhov roughness ntawm qhov chaw. Yog tias tus nqi Ra tshaj 0.2μm, yuav tsum tau rov ua dua thiab kho dua.
V. Cov tswv yim kho thiab txhim kho kev hnav tsis kam
Kev siv thiab khaws cia zoo
Tsis txhob cuam tshuam hnyav lossis poob. Kev cuam tshuam lub zog siab tshaj 10J tuaj yeem ua rau poob qoob loo.
Siv ib qho kev txhawb nqa thaum khaws cia thiab npog lub ntsej muag nrog cov ntaub ntawv pov thawj plua plav kom tsis txhob muaj plua plav tawm hauv micropores.
Ua raws li Precision Calibration
Txheeb xyuas qhov flatness nrog qib hluav taws xob txhua rau lub hlis. Yog tias qhov kev ua yuam kev dhau qhov kev zam dhau (piv txwv li, qhov kev tso cai yuam kev rau 00-qib phaj yog ≤2 × (1 + d / 1000) μm), rov qab mus rau lub Hoobkas kom zoo-tuning.
Siv cov wax tiv thaiv ua ntej lub sij hawm ntev cia kom txo tau ib puag ncig corrosion.
Kho thiab Remanufacturing Techniques
Nto hnav <0.1mm tuaj yeem kho hauv zos nrog pob zeb diamond abrasive muab tshuaj kom rov qab ua daim iav tiav ntawm Ra ≤0.1μm.
Sib sib zog nqus coj (> 0.3mm) yuav tsum tau rov qab mus rau lub Hoobkas rau rov sib tsoo, tab sis qhov no yuav txo tau tag nrho cov thickness ntawm lub phaj (ib zaug sib tsoo nrug ≤0.5mm).
Kev hnav tsis kam ntawm granite slabs stems los ntawm kev sib koom ua ke ntawm lawv cov khoom ntxhia ntuj thiab precision machining. Los ntawm kev ua kom zoo rau kev siv ib puag ncig, ua qauv txheej txheem kev saib xyuas thiab siv cov thev naus laus zis kho, nws tuaj yeem ua kom pom nws qhov zoo ntawm qhov raug zoo thiab lub neej ntev hauv qhov ntsuas qhov tseeb, dhau los ua cov cuab yeej ntsuas hauv kev tsim khoom.
Lub sij hawm xa tuaj: Sep-10-2025