Thaum nws los txog rau kev xuab zeb, cov kws tshaj lij hauv daim teb no paub tias nws yog "txoj haujlwm tseeb" hauv kev kho qhov chaw. Tshwj xeeb tshaj yog thaum sivdawb fused aluminaRaws li cov khoom siv abrasive, nws xav tau ob qho kev txawj thiab kev paub dhau los. Tau ntau xyoo, ua haujlwm hauv lub hoobkas, kuv tau pom ntau tus neeg ua haujlwm tshiab uas muaj teeb meem nrog cov txheej txheem, uas ua rau kuv paub tias peb txoj kev lag luam xav tau cov txheej txheem ua haujlwm zoo. Hnub no, kuv yuav qhia kuv cov kev paub dhau los ntau xyoo thiab tham txog qhov nyuaj ntawm kev siv alumina dawb fused sandblasting.
I. Kev Npaj: Ua kom lub hmuv ntse ua ntej txiav ntoo
Kev npaj zoo ua rau cov txheej txheem xuab zeb yooj yim dua. Dawb fused alumina yog cov khoom siv tawv thiab tawv, tab sis nws tsis tuaj yeem siv tsis muaj kev txwv. Ua ntej, cov khoom siv yuav tsum tau kuaj xyuas kom zoo. Qhib lub hnab ntim khoom thiab siv ib txhais tes los kuaj xyuas. Cov khoom siv dawb fused alumina zoo yuav tsum sib xws, nrog rau xim dawb, me ntsis pob tshab, thiab tsis muaj cov khoom tsis huv. Yog tias xim yog greyish lossis qhov loj me ntawm cov khoom tsis sib xws, muaj teeb meem nrog cov khoom siv ntawd. Kev tshuaj xyuas cov khoom siv kuj tseem ceeb heev. Lub tshuab cua compressor siab ntsuas yuav tsum nyob hauv 0.6-0.8 MPa ntau yam. Kev siab tsis ruaj khov yuav ua rau muaj kev tawg tsis sib xws, zoo li tes tshee thaum pleev xim. Lub nozzle tsuag xav tau kev saib xyuas tshwj xeeb; nrog cov khoom siv tawv xws li dawb fused alumina, nozzle hnav sai dua li lwm cov ntaub ntawv. Kuv feem ntau pom zoo kom kuaj xyuas nws txhua 40 teev ntawm kev ua haujlwm, thiab hloov nws yog tias hnav tshaj ib feem kaum ntawm lub cheeb sab hauv.
Cov kev tiv thaiv yog qhov tseem ceeb rau kev nyab xeeb, tsis yog tsuas yog ua kom pom xwb. Ib txheej khaub ncaws tiv thaiv tag nrho, tsom iav tiv thaiv, thiab lub npog ntsej muag plua plav yog qhov tseem ceeb heev. Kuv tau pom cov neeg ua haujlwm hluas sim txuag lub sijhawm los ntawm kev tsis hnav tsom iav tiv thaiv, thiab ib qho xuab zeb uas rov qab los yuav luag ntaus lawv lub qhov muag. Ib qho xwm txheej zoo li no yog ib qho ntau dhau lawm.
II. Cov Txheej Txheem Ua Haujlwm: Kev Ua Kom Tseeb Hauv Txhua Kauj Ruam
Kev teeb tsa parameter yog "lub hnub qub coj" ntawm sandblasting. Kev xaiv ntawmpob zeb dawb corundumQhov loj nyob ntawm seb qhov xav tau tshwj xeeb ntawm cov khoom ua haujlwm - cov xuab zeb ntxhib (20-40 mesh) yog qhov tsim nyog rau kev tshem tawm cov oxide tuab, cov xuab zeb nruab nrab (60-80 mesh) yog qhov tsim nyog rau kev kho qhov chaw dav dav, thiab cov xuab zeb zoo (100 mesh thiab siab dua) yog rau cov khoom ua haujlwm raug. Lub kaum sab xis thiab qhov deb kuj tseem ceeb: lub phom tsuag thiab qhov chaw ua haujlwm yuav tsum nyob ntawm lub kaum sab xis 60-80 degree, thiab qhov deb yuav tsum nyob nruab nrab ntawm 150-300 millimeters. Yog tias qhov deb no tsis raug tswj kom zoo, qhov ua haujlwm zoo yuav qis, lossis qhov chaw ua haujlwm yuav puas tsuaj.
Cov txheej txheem xuab zeb tsuas yog nyob ntawm kev txawj xwb. Thaum kuv qhia kuv cov tub ntxhais kawm, kuv feem ntau hais tias, "Ua kom koj lub dab teg yoog tau thiab txav mus los sib npaug." Lub phom tsuag yuav tsum tsis txhob nyob hauv ib qho chaw; nws yuav tsum tau txav mus los sib npaug, zoo li pleev xim. Qhov chaw sib tshooj yuav tsum tau tswj kom txog li ib feem peb kom tsis txhob muaj "kab txaij" tsis sib npaug. Rau cov khoom ua haujlwm nyuaj, koj yuav tsum xub kho cov npoo, cov qhov, thiab lwm qhov chaw nyuaj, thiab tom qab ntawd kho cov chaw tiaj tiaj loj. Yog tias qhov kev txiav txim no raug thim rov qab, qhov cuam tshuam ntawm kev kho rau ntawm cov npoo yuav raug cuam tshuam. Kev tswj hwm zoo nyob ntawm kev soj ntsuam thiab kev paub dhau los. Kev tua ntau npaum li cas txaus? Qhov no nyob ntawm cov khoom siv ua haujlwm thiab cov kev xav tau kev kho. Rau kev tshem tawm xeb ntawm cov qauv hlau dav dav, koj yuav tsum pom cov hlau liab qab; yog tias nws yog kom nce kev nplaum ntawm txheej, qhov sib npaug ntawm qhov chaw yog txaus. Kuv muaj ib txoj kev yooj yim: tom qab tua, kov qhov chaw nrog koj txhais tes. Yog tias nws zoo li qhov tiav matte sib npaug yam tsis muaj qhov ntxhib lossis du, ces txoj haujlwm raug suav hais tias tsim nyog.
III. Kev Ceev Faj: Cov Lus Qhia Tseem Ceeb Raws Li Kev Paub Dhau Los
Muaj ntau qhov chaw uas muaj teeb meem tshwj xeeb tshaj yog tshwm sim nrogdawb corundum xuab zeb, thiab kuv yuav tsum hais txog lawv. Ua ntej yog kev tswj cov plua plav. Cov plua plav uas tsim los ntawm cov corundum dawb yog qhov zoo heev thiab tseem nyob ntev. Lub tshuab cua hauv chaw ua haujlwm yuav tsum zoo, thiab cov khoom siv sau plua plav yuav tsum ua haujlwm kom zoo. Kuv tau pom qee lub Hoobkas me me uas tig lawv cov tshuab sau plua plav rau thiab tawm kom txuag hluav taws xob, uas ua rau muaj kev pheej hmoo ntawm cov neeg ua haujlwm mob pneumoconiosis ntau heev. Qhov no txuag tau nyiaj me ntsis tab sis raug nqi lub neej. Qhov thib ob, kev siv cov khoom siv rov ua dua tshiab. Cov corundum dawb tsis pheej yig, yog li rov ua dua tshiab ntau li ntau tau. Txawm li cas los xij, nco ntsoov tias cov corundum dawb rov ua dua tshiab yuav tsum tau sieved kom tshem tawm cov hmoov zoo thiab cov khoom tsis huv, thiab tom qab ntawd sib xyaw nrog cov khoom siv tshiab hauv qhov sib piv tsim nyog. Kev siv cov khoom siv rov ua dua tshiab tsuas yog tsis ua rau muaj txiaj ntsig zoo, thaum siv cov khoom siv tshiab tsuas yog kim heev. Qhov sib piv ntawm kwv yees li 3: 7 (cov khoom siv tshiab rau cov khoom siv qub) feem ntau suav tias yog qhov zoo tagnrho.
Kev saib xyuas cov khoom siv feem ntau raug saib tsis taus. Tom qab ua haujlwm txhua hnub, cov khoom siv abrasive uas tseem tshuav hauv lub tshuab xuab zeb yuav tsum tau muab nchuav tawm, tshwj xeeb tshaj yog thaum huab cua noo, vim tias cov corundum dawb feem ntau sib sau ua ke. Cov kav dej yuav tsum tau kuaj xyuas tsis tu ncua rau kev hnav thiab xau. Kev tsis quav ntsej cov ntsiab lus me me no tuaj yeem ua rau muaj teeb meem loj rau cov khoom siv, ua rau kev ncua sijhawm tsim khoom thiab cov nqi kho siab.
IV. Kuv Cov Kev Nkag Siab
Tom qab ntau xyoo ntawm kev siv xuab zeb tua, kuv ntseeg tias kev ua kom raws li tus qauv tsis yog hais txog kev hloov tib neeg mus ua tshuab, tab sis yog hais txog kev xa cov kev paub dhau los. Txhua tus neeg ua haujlwm paub dhau los muaj lawv tus kheej cov tswv yim me me. Piv txwv li, thaum siv xuab zeb tua tshwj xeeb tshaj yog cov ntawv nyias nyias, kuv txo qhov siab los ntawm 0.1 MPa; thaum ua haujlwm nrog cov hlau txhuas, kuv khaws rab phom tsuag me ntsis deb. Cov ntsiab lus no yuav tsis tau sau meej meej hauv cov txheej txheem ua haujlwm, tab sis lawv tseem ceeb heev rau kev ua kom zoo.
Cov tub ntxhais hluas uas kawm cov txuj ci no yuav tsum tsis txhob tsuas yog nyeem phau ntawv qhia thiab nco ntsoov cov txheej txheem xwb; lawv yuav tsum tau ntxuav tes thiab saib xyuas kom zoo. Kuv feem ntau hais rau kuv cov tub ntxhais kawm tias: "Hauv kev siv xuab zeb, koj xav tau qhov muag ntse, tes ruaj khov, thiab lub siab xav ua tib zoo." Kev saib xyuas qhov kev hloov pauv ntawm qhov chaw uas raug xuab zeb thiab hnov qhov kev co ntawm rab phom txau - cov no yog cov khoom uas xav tau sijhawm los khaws cia.
Thaum kawg, qhov kev ua kom tus qauv ntawmdawb corundumCov txheej txheem xuab zeb yog xav kom txhim kho cov khoom zoo thiab xyuas kom cov neeg ua haujlwm muaj kev nyab xeeb. Tab sis cov qauv yog nruj, thaum tib neeg hloov tau. Hauv kev xyaum, peb yuav tsum ua raws li cov lus qhia thaum tseem hloov tau yooj yim. Kuv vam tias cov kev paub no yuav pab tau txhua tus, thiab kuv txais tos cov kws tshaj lij los sib pauv tswv yim thiab pab ua kom peb txoj haujlwm muaj kev tshaj lij ntxiv.