Cov hlau tsis xeb muaj ntau yam xim tiav. Nws yog ib qho tseem ceeb kom paub tias cov xim tiav no yog dab tsi thiab vim li cas lawv thiaj tseem ceeb. Cov kev tsim kho tshiab hauv kev siv tshuab abrasive tuaj yeem txo cov kauj ruam ua haujlwm kom xa tau qhov tiav xav tau, suav nrog qhov ci ntsa iab uas xav tau.
Cov hlau tsis xeb yuav nyuaj rau ua haujlwm nrog, tab sis cov khoom tiav lawm muab ib qho zoo nkauj tshaj plaws thiab ua rau txhua txoj haujlwm tsim nyog nws. Feem ntau nws lees txais tias kev siv cov xuab zeb zoo dua hauv kev xuab zeb tuaj yeem tshem tawm cov qauv khawb yav dhau los thiab txhim kho qhov tiav, tab sis muaj ntau cov kauj ruam tag nrho uas yuav tsum paub txog thaum siv ntau cov xuab zeb kom ua tiav qhov tiav xav tau.
Cov hlau tsis xeb muaj ntau yam xim tiav. Nws yog ib qho tseem ceeb kom paub tias cov xim tiav no yog dab tsi thiab vim li cas lawv thiaj tseem ceeb. Cov kev tsim kho tshiab hauv kev siv tshuab abrasive tuaj yeem txo cov kauj ruam ua haujlwm kom xa tau qhov tiav xav tau, suav nrog qhov ci ntsa iab uas xav tau.
Lub Tuam Txhab Kev Lag Luam Hlau Tshwj Xeeb ntawm North America (SSINA) piav qhia txog cov qauv kev lag luam thiab qhov twg cov khoom siv cov lej tiav sib txawv.
Tus lej 1 tiav lawm. Kev kho qhov chaw no yog ua los ntawm kev dov (kub dov) stainless hlau uas tau raug cua sov ua ntej dov. Yuav tsum tau ua kom tiav me ntsis, yog vim li cas nws thiaj suav tias yog ntxhib. Cov khoom lag luam feem ntau muaj qhov chaw thib ib yog cua sov cua, lub thawv annealing, boiler baffles, ntau yam khoom siv hauv qhov cub, thiab roj turbines, yog li ntawd.
Tus lej 2B tiav lawm. Qhov chaw txias no ci ntsa iab zoo li daim iav uas muaj huab thiab tsis tas yuav ua tiav cov kauj ruam. Cov khoom uas muaj qhov tiav 2B suav nrog cov lauj kaub thoob ntiaj teb, cov khoom siv hauv chaw tsim tshuaj, cov riam, cov khoom siv hauv chaw ua ntawv thiab cov khoom siv dej.
Kuj tseem muaj qhov tiav 2D hauv qeb 2. Qhov tiav no yog qhov sib xws, matte silver grey rau cov kauj nyias nyias, qhov tuab ntawm qhov tau raug txo los ntawm kev txias dov tsawg kawg nkaus txheej txheem tiav raws li nws feem ntau siv nrog lub Hoobkas tiav. Pickling lossis descaling yog qhov yuav tsum tau tom qab kev kho cua sov kom tshem tawm chromium. Pickling tuaj yeem yog qhov kawg ntau lawm rau qhov kev kho saum npoo no. Thaum xav tau pleev xim tiav, qhov tiav 2D yog qhov nyiam ua lub substrate vim nws muab cov xim zoo heev.
Xim txhuam naj npawb 3 yog cov kab luv luv, tuab sib luag, thiab sib luag. Nws tau los ntawm kev txhuam nrog cov khoom siv txhuam me me lossis los ntawm kev hla cov kauj los ntawm cov menyuam tshwj xeeb uas nias cov qauv rau hauv qhov chaw, ua piv txwv tias zoo li hnav tsis tu ncua. Nws yog qhov tiav uas muaj kev cuam tshuam me ntsis.
Rau kev txhuam hniav siv tshuab, 50 lossis 80 grit feem ntau yog siv thaum pib, thiab 100 lossis 120 grit feem ntau yog siv rau kev txhuam hniav zaum kawg. Qhov roughness ntawm qhov chaw feem ntau muaj qhov nruab nrab roughness (Ra) ntawm 40 microinches lossis tsawg dua. Yog tias lub chaw tsim khoom xav tau fusion welds lossis lwm yam trimming, cov kab polishing tshwm sim feem ntau ntev dua li cov khoom polished los ntawm lub chaw tsim khoom lossis yob polisher. Qhov feem ntau pom hauv cov khoom siv brewery, cov khoom siv ua zaub mov, cov khoom siv hauv chav ua noj, thiab cov cuab yeej siv scientific yog No. 3 finish.
Qhov tiav No. 4 yog qhov feem ntau thiab siv rau hauv cov khoom siv thiab cov khoom noj khoom haus. Nws cov tsos yog tus cwj pwm los ntawm cov kab luv luv sib luag uas txuas ntxiv mus rau qhov ntev ntawm lub kauj. Nws tau txais los ntawm kev txhuam cov tiav No. 3 nrog cov khoom siv abrasives maj mam zoo dua. Nyob ntawm qhov yuav tsum tau ua ntawv thov, qhov tiav kawg tuaj yeem nyob qhov twg ntawm 120 thiab 320 grit. Cov grit siab dua tsim cov kab polished zoo dua thiab cov tiav ci ntsa iab dua.
Qhov roughness ntawm qhov chaw feem ntau yog Ra 25 µin.lossis tsawg dua. Qhov kev ua tiav no yog siv dav hauv cov khoom siv hauv tsev noj mov thiab chav ua noj, khw muag khoom, kev ua zaub mov thiab cov khoom siv mis nyuj. Ib yam li Finish No. 3, yog tias tus neeg teb xov tooj xav tau fuse welds lossis ua lwm yam kev kov tiav, cov kab polished tshwm sim feem ntau ntev dua li cov kab ntawm cov khoom polished los ntawm cov chaw tsim khoom lossis yob polisher. Lwm qhov chaw uas pom Finish 4 suav nrog cov tsheb thauj khoom hauv txoj kev, cov chaw kho mob thiab cov khoom siv, cov cuab yeej siv lossis cov vaj huam sib luag tswj, thiab cov chaw faib dej.
Xim txhuam naj npawb 3 yog cov kab luv luv, tuab sib luag, thiab sib luag. Nws tau los ntawm kev txhuam nrog cov khoom siv txhuam me me lossis los ntawm kev hla cov kauj los ntawm cov menyuam tshwj xeeb uas nias cov qauv rau hauv qhov chaw, ua piv txwv tias zoo li hnav tsis tu ncua. Nws yog qhov tiav uas muaj kev cuam tshuam me ntsis.
Qhov tiav No. 7 yog qhov ci ntsa iab heev thiab muaj qhov zoo li daim iav. Polished rau 320 grit thiab polished No. 7 finish feem ntau pom muaj nyob rau hauv cov hau ncej, cov khoom dai kom zoo nkauj thiab cov phab ntsa.
Muaj kev nce qib tseem ceeb hauv cov khoom siv abrasives siv los ua kom tiav cov nto tiav no, pab cov chaw tsim khoom tsim ntau qhov chaw kom muaj kev nyab xeeb, sai, thiab tsim nyog tus nqi. Cov zaub mov tshiab, cov fibers muaj zog dua thiab cov tshuaj tiv thaiv cov roj hmab pab ua kom cov txheej txheem tiav zoo tshaj plaws.
Cov khoom siv abrasives no muab kev txiav sai, lub neej ntev, thiab txo cov kauj ruam uas yuav tsum tau ua kom tiav txoj haujlwm. Piv txwv li, lub hau nrog cov kab nrib pleb me me hauv cov khoom ceramic ua rau nws lub neej ntev qeeb thiab muab qhov tiav tas li.
Ntxiv mus, cov thev naus laus zis zoo ib yam li cov khoom sib xyaw ua ke muaj cov khoom me me uas sib txuas ua ke kom txiav sai dua thiab muab qhov tiav zoo dua. Nws xav tau tsawg kauj ruam thiab tsawg dua cov khoom siv abrasive kom ua tiav txoj haujlwm, thiab feem ntau cov neeg ua haujlwm pom kev ua haujlwm zoo dua thiab txuag nqi.
Michael Radaelli is Product Manager at Norton|Saint-Gobain Abrasives, 1 New Bond St., Worcester, MA 01606, 508-795-5000, michael.a.radaelli@saint-gobain.com, www.nortonabrasives.com.
Cov chaw tsim khoom raug cov nyom kom ua kom tiav cov ces kaum thiab cov voj voog ntawm cov khoom siv hlau tsis xeb. Txhawm rau sib xyaw cov vuam thiab cov chaw tsim khoom uas nyuaj rau ncav cuag, nws muaj tsib kauj ruam uas xav tau lub log sib tsoo, ib daim ntaub plaub fab ntawm ntau cov xuab zeb, thiab lub log sib tsoo sib xws.
Ua ntej, cov neeg ua haujlwm siv lub log sib tsoo los ua kom khawb tob rau cov khoom siv hlau tsis xeb no. Cov log sib tsoo feem ntau tawv dua thiab tsis zam txim, ua rau tus neeg ua haujlwm tsis zoo thaum pib. Cov kauj ruam sib tsoo siv sijhawm ntau thiab tseem tshuav cov khawb uas yuav tsum tau tshem tawm los ntawm peb kauj ruam ntxiv ntawm cov ntaub pua plag sib txawv. Cov kauj ruam no ua raws li kev siv cov log sib xws kom ua tiav qhov chaw tiav raws li xav tau.
Los ntawm kev hloov lub log sib tsoo mus rau lub log ceramic lobe, tus neeg teb xov tooj tuaj yeem ua tiav kev txhuam hniav hauv thawj kauj ruam. Khaws cov xuab zeb zoo ib yam li hauv kauj ruam thib ob, tus neeg teb xov tooj hloov cov ntaub plaub fab nrog lub log flap, txhim kho lub sijhawm thiab kev ua tiav.
Tshem tawm lub 80-grit square pad thiab hloov nws nrog lub mandrel tsis-woven nrog cov khoom sib xyaw ua ke ua raws li 220-grit non-woven mandrel tso cai rau tus neeg teb xov tooj los tsim cov sheen xav tau thiab tag nrho cov tiav thiab tshem tawm qhov xav tau rau Cov kauj ruam kawg yog cov txheej txheem qub (siv lub log sib koom ua ke los kaw cov kauj ruam).
Ua tsaug rau kev txhim kho hauv cov log flapper thiab cov thev naus laus zis tsis yog woven, tus lej ntawm cov kauj ruam tau raug txo los ntawm tsib mus rau plaub, uas txo lub sijhawm ua tiav los ntawm 40% thiab txuag cov nqi zog thiab cov khoom lag luam.
Muaj kev nce qib tseem ceeb hauv cov khoom siv abrasives siv los ua kom tiav cov nto no, pab cov chaw tsim khoom tsim ntau qhov chaw kom muaj kev nyab xeeb, sai, thiab tsim nyog tus nqi.
WELDER, yav tas los hu ua Practical Welding Today, qhia txog cov neeg tiag tiag uas ua cov khoom uas peb siv thiab ua haujlwm nrog txhua hnub. Phau ntawv xov xwm no tau pab cov zej zog vuam hauv North America tau ntau tshaj 20 xyoo.
Tam sim no nrog kev nkag mus rau tag nrho cov ntawv digital ntawm The FABRICATOR, nkag mus tau yooj yim rau cov peev txheej muaj txiaj ntsig hauv kev lag luam.
Cov ntawv xov xwm digital ntawm The Tube & Pipe Journal tam sim no nkag tau tag nrho, muab kev nkag mus tau yooj yim rau cov peev txheej muaj txiaj ntsig hauv kev lag luam.
Txaus siab rau kev nkag mus rau tag nrho cov ntawv digital ntawm STAMPING Journal, uas muab cov kev nce qib tshiab tshaj plaws, cov kev coj ua zoo tshaj plaws thiab cov xov xwm kev lag luam rau kev lag luam hlau stamping.
Txaus siab rau kev nkag mus rau tsab ntawv digital ntawm The Additive Report kom paub txog yuav siv cov khoom siv ntxiv los txhim kho kev ua haujlwm zoo li cas thiab nce cov nyiaj tau los.
Tam sim no nrog kev nkag mus rau tag nrho cov ntawv digital ntawm The Fabricator en Español, nkag mus tau yooj yim rau cov peev txheej muaj txiaj ntsig hauv kev lag luam.