Hnav tsim yam tseem ceeb slurry twj tso kua mis chaw tsim tshuaj paus 's Ntau yam coj tsim yam slurry twj tso kua mis chaw tsim tshuaj paus , thiab txawv qhov chaw thiab txawv qhov chaw ntawm lub hnav mechanisms tsis zoo ib yam, tab sis nyob rau hauv feem ntau yuav muab sau tseg nyob rau hauv peb pawg:
1 Erosion: Nyob rau hauv lub slurry twj tso kua mis chaw tsim tshuaj paus thaum lub sij hawm ua hauj lwm, cov kua rau cov khoom uas nqa nyob rau hauv ib tug txaus tus nqi nyob rau hauv lub nto ntawm tus neeg cuam tshuam, ua rau cov khoom poob.Raws li kev soj ntsuam ntawm qhov tsis ua hauj lwm ntawm cov khoom siv nto yaig tuaj yeem muab faib ua kev hnav thiab deformation hnav thiab qaug zog hnav ntawm kev txiav + kev sib xyaw deformation.
2 cavitation kev puas tsuaj: Thaum lub sij hawm ua hauj lwm ntawm lub twj tso kua mis, lub ntws Cheebtsam nyob rau hauv lub zos cheeb tsam (feem ntau yog nyob rau hauv lub impeller inlet tom qab), rau ib co yog vim li cas, cov kua twj tso kua mis mus rau hauv lub sij hawm thaum lub siab siab poob mus rau lub vapor siab ntawm qhov kub thiab txias. cov kua pib vaporized los tsim cov pa, tsim cov npuas.Cov npuas no nrog cov kua ntws mus rau pem hauv ntej, mus txog qhov siab dua, cov npuas dej poob qis heev txawm tias.Meanwhile nyob rau hauv lub npuas condensation, kua hais ntawm kev kub ceev filling voids, thiab muaj ib tug muaj zog cuam tshuam rau cov hlau nto.Qhov no hlau nto spalling vim muaj kev cuam tshuam ntawm qaug zog, ua rau cov khoom poob, hnyav hlau nto qhia honeycomb.Qhov chaw ntawm cavitation feem ntau tshwm sim nyob rau hauv lub impeller qhov hluav taws xob thiab volute inlet .
3 corrosive hnav: Thaum qhov nruab nrab kis tau tus mob pH,slurry twj manufacturersCov khoom ntws yuav tshwm sim corrosive hnav, uas yog qhov poob ntawm cov khoom tshwm sim tshwm sim nyob rau hauv kev sib koom tes ntawm corrosion thiab hnav.
Corrosion tuaj yeem muab faib ua tshuaj corrosion thiab electrochemical corrosion.Tshuaj corrosion ntawm hlau thiab kua xov xwm ncaj qha teb tawm ntawm cov hlau poob, electrochemical corrosion nyob rau hauv kua nruab nrab yog lub luag hauj lwm ntawm cov hlau nto los tsim micro- roj teeb tawm hauv cov khoom poob.Txij li thaum siv cov khoom siv hlau tiag tiag yog cov khoom siv polycrystalline multiphase, yog li ntawd, ib qho tseem ceeb corrosion, electrochemical corrosion, tshwj xeeb tshaj yog siv lead ua ciam teb corrosion, intergranular tawg yog tsim hlau nto, thiab cais cov theem nyuaj nplej los yog, poob kev txhawb nqa, yog li nws yuav tawm los. nyob rau hauv erosion tshwm sim khoom particles;Thaum scouring cov khoom hais, thiab cov hlau nto corrosion vim cov passivation txheej yog rubbed los tsim kua nruab nrab nyob rau hauv kev sib cuag nrog cov hlau nto kom nce tshiab corrosion.Slurry twj tso kua mis chaw tsim tshuaj paus nyob rau hauv tsis ua hauj lwm tsom xam ntawm lub hav zoov ntawm lub phenomenon tau pom tias muaj corrosion.
Post lub sij hawm: Lub Xya hli ntuj-13-2021