Kev tshuaj xyuas daim ntawv thov ntawm laser cladding remanufacturing technology rau cov khoom siv tsis ua haujlwm hauv cov mines

Hauv kev ua haujlwm ntawm cov tshuab mining, qhov xwm txheej ua haujlwm hnyav tseem yog qhov teeb meem tseem ceeb uas ua rau cov khoom siv tsis ruaj khov. Cov chaw ua haujlwm hauv av hauv av raug kaw thiab nqaim, nrog rau cov hmoov av uas muaj ntau heev ua rau cov khoom siv puas tsuaj tas li. Thaum lub sijhawm rho cov thee sib txuas, kev sib tsoo ntau zaus ntawm cov hniav txiav thiab cov pob zeb thee tawv, ua ke nrog kev sib txhuam hnyav ntawm cov khoom siv scraper thiab cov ntaub ntawv, ua rau cov khoom siv hnav sai dua. Lub caij no, qhov chaw muaj mineralization siab thiab noo noo hauv cov dej hauv av ua rau muaj kev xeb hluav taws xob hnyav. Qhov no ua rau muaj teeb meem tsis ua haujlwm dav dav xws li kev hnav ntau dhau, kev xeb ua rau muaj qhov, thiab khawb ntawm cov khoom tseem ceeb suav nrog cov hniav txiav thee, cov kab txhawb nqa hydraulic ntawm cov tshuab mining tag nrho, thiab cov khoom siv scraper. Kev ua tsis tiav ua ntej ntawm cov khoom no tsis yog tsuas yog ua rau lub sijhawm tsis ua haujlwm ntawm cov khoom siv xwb tab sis kuj ua rau cov nqi kho thiab kev pheej hmoo kev nyab xeeb hauv kev ua haujlwm mining nce ntxiv.

Txhawm rau daws qhov teeb meem tseem ceeb no, kev koom ua ke ntawm cov thev naus laus zis laser muaj zog siab nrog cov hmoov hlau uas yaj tau thiab tiv taus hnav tau hloov pauv cov kev daws teeb meem rov tsim dua rau cov khoom siv hauv kev tsuas. Los ntawm kev siv cov teeb laser muaj zog siab ua cov khoom siv thermal, txoj hauv kev tshiab no tso cov hmoov hlau rau ntawm cov chaw kho. Hauv qab laser irradiation, cov khoom sib xyaw ua ke yaj thiab khov sai nrog cov substrate, tsim cov txheej txheem hlau sib txuas. Cov txheej txheem sib xyaw no txawv ntawm cov khoom siv lub cev ib txwm muaj xws li electroplating thiab tshuaj tsuag, tshem tawm kev pheej hmoo ntawm kev sib cais thaum tsim cov hauv paus rau kev ua haujlwm zoo dua ntawm cov khoom.

Tus qauv tsim ntawm cov hmoov hlau tshwj xeeb uas tsis yooj yim hnav yog ib qho ntawm cov hauv paus tseem ceeb. Feem ntau siv cov hlau nickel, hlau, lossis cobalt ua cov matrices, cov hmoov no faib cov khoom me me xws li WC, Cr₃C₂, thiab TiC. Los ntawm kev ntxiv cov ntsiab lus xws li Cr, Mo, thiab Si, cov hlau ua kom tawv thiab tiv taus corrosion zoo tshaj plaws. Cov khoom me me tuaj yeem ua rau lub tsho tawv dua rau HRC55-65, tiv taus cov pob zeb thee thiab cov khoom sib txhuam. Lub caij no, lub matrix tawv txo cov khoom hnyav, tiv thaiv kev tawg ntawm cov txheej thiab ua tiav qhov sib npaug ntawm kev ua tau zoo "tawv tab sis tsis tawg".​

Hauv cov ntawv thov rov ua dua tshiab, cov thev naus laus zis no qhia tau tias muaj qhov tshwj xeeb thiab ua haujlwm tau zoo heev. Rau cov tshuab khawb thee thiab cov tshuab txiav qhov av, qhov kawg ntawm lub conical ua haujlwm ua thaj chaw tseem ceeb uas ncaj qha kov cov thee-pob zeb. Cov thev naus laus zis laser cladding tuaj yeem tsim cov txheej txheem 3-5 hli tuab ntawm qhov chaw cone. Cov khoom tawv hauv cov txheej txheem ua haujlwm zoo li "armor" los tiv thaiv kev hnav ntawm kev txiav pob zeb thee, thaum lub matrix tawv nqus cov zog cuam tshuam, ntev lub neej kev pabcuam los ntawm 2-3 zaug piv rau cov khoom tshiab hauv qab cov xwm txheej geological nyuaj. Rau cov khoom siv scraper conveyors hnav-yooj yim xws li cov troughs hauv nruab nrab thiab cov troughs hloov pauv, cov txheej txheem laser-clad hnav-yooj yim txo qhov hnav abrasive thaum lub sijhawm thauj khoom. Cov troughs hauv nruab nrab thawj zaug xav tau hloov txhua 3-6 lub hlis tam sim no kav ntev 12-24 lub hlis tom qab rov ua dua tshiab. Rau cov kab hlau stainless hauv cov tshuab ua haujlwm tag nrho cov kev txhawb nqa hydraulic uas kav ntev thiab muaj plua plav, cov txheej txheem chrome-plating ib txwm muaj kev xeb los ntawm kev khawb tuaj yeem hloov pauv. Cov txheej txheem sib xyaw ua ke uas tiv taus xeb thiab hnav-resistant uas siv laser tsis yog tsuas yog cais cov khoom siv corrosive xwb tab sis kuj tseem tiv taus kev puas tsuaj thaum lub sijhawm nthuav dav / kev sib cog lus ntawm kem, ua rau lub voj voog txij nkawm ntev dua plaub zaug. Rau cov iav thiab cov khoom vaj khoom tsev uas tsis ua haujlwm hauv cov kab ke sib kis iav, cov thev naus laus zis laser cladding rov qab kho qhov tseeb ntawm qhov ntev los ntawm cov txheej txheem thaum ua kom zoo dua cov khoom siv los txhim kho kev tiv thaiv kev qaug zog, ua kom ntseeg tau tias kev sib kis ruaj khov. Teeb nws kom khiav.

Piv rau cov txheej txheem hloov khoom ib txwm muaj, kev siv tshuab laser los tsim cov khoom siv rov ua dua tshiab tsis yog tsuas yog ua rau lub neej ua haujlwm ntawm cov khoom tseem ceeb ntev dua 2-4 zaug xwb tab sis kuj ua rau muaj kev siv cov khoom qub rov qab tau zoo, txo qhov kev thov rau cov khoom tshiab hauv kev ua haujlwm hauv kev khawb av. Cov ntaub ntawv qhia tau tias cov thev naus laus zis no txo ​​cov sijhawm tsis ua haujlwm ntawm cov tshuab los ntawm ntau dua 60% thiab txiav cov nqi kho txhua xyoo los ntawm 30% -50%. Thaum tswj kev tsim khoom tas mus li, nws ua rau muaj kev lag luam zoo dua thiab kev ruaj khov ntawm ib puag ncig hauv kev ua haujlwm hauv kev khawb av. Tus qauv tsim khoom dua tshiab "kho dua-hloov, txhim kho kev ua tau zoo" no tab tom dhau los ua tus tsav tsheb thev naus laus zis tseem ceeb rau kev txhawb nqa kev ua haujlwm ntsuab thiab ua haujlwm tau zoo ntawm cov khoom siv khawb av.