Cov neeg feem ntau yuav cov hlau tsis huv ua ntej ua tiav, uas ntxiv rau qhov nyuaj ntawm cov khoom uas cov neeg ua haujlwm yuav tsum xav txog.
Zoo li feem ntau cov ntaub ntawv, stainless hlau muaj ntau qhov zoo thiab qhov tsis zoo.Cov hlau yog suav tias yog "stainless steel" yog tias cov hlau muaj tsawg kawg yog 10.5% chromium, uas tsim cov oxide txheej ua rau nws acid thiab corrosion resistant.Qhov kev tiv thaiv corrosion no tuaj yeem txhim kho ntxiv los ntawm kev ua kom cov ntsiab lus chromium thiab ntxiv cov alloying ntxiv.
Cov khoom siv "stainless steel" khoom, kev saib xyuas tsis tshua muaj, durability thiab ntau qhov chaw tiav ua rau nws tsim nyog rau kev lag luam xws li kev tsim kho, rooj tog zaum, khoom noj khoom haus thiab dej haus, kev kho mob thiab ntau lwm yam kev siv uas yuav tsum tau muaj zog thiab corrosion kuj ntawm hlau.
Stainless hlau zoo li yuav kim dua li lwm cov hlau.Txawm li cas los xij, nws muaj cov txiaj ntsig zoo-rau-qhov hnyav los ntawm kev tso cai rau cov khoom siv thinner dua li cov qib ib txwm muaj, uas tuaj yeem ua rau txuag nqi.Vim nws cov nqi tag nrho, cov khw yuav tsum xyuas kom lawv siv cov cuab yeej zoo kom tsis txhob raug nqi khib nyiab thiab rov ua dua cov khoom siv no.
Stainless hlau feem ntau suav hais tias nyuaj rau vuam vim nws dissipates tshav kub sai thiab yuav tsum tau saib xyuas zoo thaum lub sij hawm ua tiav thiab polishing cov kauj ruam.
Ua hauj lwm nrog cov hlau tsis muaj steel feem ntau yuav tsum muaj kev paub ntau dua ntawm cov welder lossis tus neeg teb xov tooj dua li kev ua haujlwm nrog cov hlau, uas zoo li ruaj khov dua.Nws qhov dav tuaj yeem raug txo los ntawm kev qhia qee yam tsis muaj, tshwj xeeb tshaj yog thaum vuam.Vim yog tus nqi siab ntawm cov hlau tsis muaj steel, nws ua rau muaj kev nkag siab ntau dua rau cov neeg ua haujlwm paub txog siv nws.
Jonathan Douville, tus thawj coj khoom lag luam laus, R&D International, Walter Surface Technologies, Pointe-Claire, Que hais tias "Tib neeg feem ntau yuav cov hlau tsis muaj steel vim tias nws ua tiav," Jonathan Douville, tus thawj coj khoom lag luam laus, R&D International, Walter Surface Technologies, Pointe-Claire, Que hais tias "Tib neeg feem ntau yuav cov hlau tsis muaj steel vim tias nws ua tiav," «Люди обычно покупают нержавеющую сталь из-за ее отделки», — сказал Джонатан Доувилльо, старувиж местарший старший ter Surface Technologies, Pointe-Claire, Que. Jonathan Douville, Senior Product Manager, R&D International, Walter Surface Technologies, Pointe-Claire, Qu.Jonathan Douville, tus thawj coj loj ntawm kev tshawb fawb thoob ntiaj teb thiab kev txhim kho ntawm Walter Surface Technologies hauv Pointe Claire, Quebec hais tias "Cov tib neeg feem ntau yuav cov hlau tsis muaj steel rau nws qhov kawg,""Qhov no ntxiv rau cov kev txwv uas cov neeg ua haujlwm yuav tsum xav txog."
Txawm hais tias nws yog qhov loj 4 linear kev ntxhib los mos txheej los yog qhov loj 8 daim iav tiav, tus neeg teb xov tooj yuav tsum xyuas kom meej tias cov khoom yog maj mam ntawm cov khoom thiab cov txheej tsis puas thaum tuav thiab ua.Nws tseem tuaj yeem txwv kev npaj thiab ntxuav cov kev xaiv, uas yog qhov tseem ceeb rau kev tsim khoom zoo.
Rick Hathelt, PFERD Cheeb Tsam Tus Thawj Coj ntawm Canada, Ontario, Mississauga, Ontario hais tias "Thaum ua haujlwm nrog cov khoom no, thawj qhov yuav tsum ua yog xyuas kom nws huv, huv thiab huv dua,""Nws yog ib qho tseem ceeb heev kom paub tseeb tias koj muaj qhov huv si (tsis muaj cov pa roj carbon) thaum ntxuav cov hlau tsis huv kom tshem tawm cov impurities uas tuaj yeem ua rau oxidation (rusting) thiab tiv thaiv cov txheej txheem passivation los ntawm kev tsim cov txheej txheem tiv thaiv kom txo qis oxidation.”
Thaum siv cov hlau tsis muaj steel, cov khoom siv thiab ib puag ncig yuav tsum tau ntxuav.Tshem tawm cov roj thiab cov yas seem ntawm cov ntaub ntawv yog qhov pib zoo.Cov kab mob ntawm cov hlau tsis huv tuaj yeem ua rau oxidation, tab sis lawv tuaj yeem tsim teeb meem thaum vuam thiab ua rau muaj qhov tsis xws luag.Yog li ntawd, nws yog ib qho tseem ceeb kom huv si saum npoo ua ntej soldering.
Ib puag ncig ntawm lub rooj cob qhia tsis yog ib txwm ua kom huv si thiab kev sib kis tuaj yeem ua rau muaj teeb meem thaum ua haujlwm nrog cov hlau tsis muaj steel thiab carbon hlau.Feem ntau lub khw muag khoom siv ntau tus kiv cua lossis siv lub tshuab cua txias kom cov neeg ua haujlwm txias, uas tuaj yeem thawb cov kab mob mus rau hauv pem teb lossis ua rau cov dej ntws los yog cov dej sib tov los tsim cov khoom siv raw.Qhov no yog qhov nyuaj tshwj xeeb tshaj yog thaum cov pa roj carbon steel yog cua tshuab mus rau stainless hlau.Sib cais cov ntaub ntawv no thiab khaws cia rau hauv qhov chaw huv si yog qhov tseem ceeb thaum nws los txog rau kev siv vuam zoo.
Nws yog ib qho tseem ceeb kom tshem tawm cov xim tsis muaj xim kom xeb tsis tsim nyob rau lub sijhawm thiab tsis muaj zog rau tag nrho cov qauv.Nws kuj yog qhov zoo kom tshem tawm bluing kom txawm tias tawm xim ntawm qhov chaw.
Hauv tebchaws Canada, vim huab cua txias heev thiab lub caij ntuj no, nws yog ib qho tseem ceeb heev uas yuav tsum xaiv cov qib zoo ntawm stainless hlau.Douville piav qhia tias feem ntau cov khw muag khoom pib xaiv 304 vim nws tus nqi.Tab sis yog tias lub khw yuav siv cov khoom no rau sab nraud, lawv xav kom hloov mus rau 316 txawm tias nws raug nqi ob zaug ntau dua.304 yog raug rau corrosion thaum siv los yog khaws cia sab nraum zoov.Txawm hais tias qhov chaw raug ntxuav thiab tsim txheej txheej passivation, cov xwm txheej sab nraud tuaj yeem ua rau saum npoo, rhuav tshem cov txheej txheej passivation thiab nws thiaj li ua rau xeb dua.
"Kev npaj vuam yog ib qho tseem ceeb rau ntau qhov laj thawj," hais tias Gabi Miholix, Application Development Specialist, Abrasive Systems Division, 3M Canada, London, Ontario."Kev tshem tawm cov xeb, xim thiab bevels yog qhov tseem ceeb rau kev vuam zoo.Qhov chaw weld yuav tsum tsis muaj cov kab mob sib kis uas tuaj yeem ua rau cov leeg tsis muaj zog. "
Hatelt ntxiv tias kev tu thaj chaw yog qhov tsim nyog, tab sis kev npaj ua ntej vuam kuj tseem muaj xws li chamfering cov khoom kom ntseeg tau tias muaj kev adhesion thiab lub zog ntawm weld.
Thaum vuam stainless hlau, nws yog ib qho tseem ceeb uas yuav tau xaiv cov hlau muab tub lim kom raug rau qib siv.Stainless hlau yog tshwj xeeb rhiab heev thiab yuav tsum tau welds tau ntawv pov thawj rau tib yam khoom.Piv txwv li, lub hauv paus hlau 316 yuav tsum tau muab tub lim hlau 316. Welders tsis tuaj yeem tsuas yog siv txhua hom kev muab tub lim hlau, txhua qib ntawm cov hlau tsis muaj steel yuav tsum muaj cov muab tub lim kom zoo.
"Thaum welding stainless hlau, welder tiag tiag yuav tsum tau saib xyuas qhov kub thiab txias," said Michael Radaelli, tus thawj tswj khoom rau Norton |Saint-Gobain Abrasives, Worcester, Massachusetts Asmeskas"Muaj ntau yam khoom siv sib txawv uas tuaj yeem siv los ntsuas qhov kub ntawm qhov vuam thiab qhov chaw raws li cov welder heats li, vim hais tias yog ib qho tawg tshwm nyob rau hauv cov hlau tsis muaj steel, ib feem yuav raug puas tsuaj."
Radaelli hais ntxiv tias tus welder yuav tsum xyuas kom meej tias nws tsis nyob hauv tib qhov chaw ntev.Multi-layer welding yog ib txoj hauv kev zoo kom cov substrate los ntawm overheating.Ntev vuam ntawm lub hauv paus stainless hlau tuaj yeem ua rau nws overheat thiab tawg.
Radaelli tau hais tias "Kev vuam stainless hlau tuaj yeem siv sijhawm ntev dua, tab sis nws kuj yog ib qho kev kos duab uas yuav tsum tau muaj kev txawj ntse," Radaelli hais.
Kev npaj tom qab vuam tiag tiag nyob ntawm qhov khoom kawg thiab nws daim ntawv thov.Qee qhov xwm txheej, Miholix piav qhia, qhov vuam tsis pom, yog li tsuas yog qhov kev tu tom qab vuam tsuas yog yuav tsum tau ua, thiab txhua qhov kev sib tsoo pom tau raug tshem tawm sai.Los yog cov vuam yuav tsum tau muab qib lossis ntxuav, tab sis tsis tas yuav tsum tau npaj tshwj xeeb.Yog tias yuav tsum tau ua kom zoo los yog daim iav tiav, cov txheej txheem polishing ntau dua yuav tsum tau ua.Nws tsuas yog nyob ntawm daim ntawv thov.
"Qhov teeb meem tsis yog xim," Miholic hais."Qhov kev hloov pauv ntawm qhov chaw no qhia tias cov khoom ntawm cov hlau tau hloov pauv thiab tam sim no tuaj yeem oxidize / xeb."
Xaiv lub cuab yeej ua tiav qhov sib txawv yuav txuag sijhawm thiab nyiaj txiag thiab tso cai rau tus neeg teb xov tooj los kho qhov ua tiav.
Nws yog ib qho tseem ceeb kom tshem tawm cov xim tsis muaj xim kom xeb tsis tsim nyob rau lub sijhawm thiab tsis muaj zog rau tag nrho cov qauv.Nws kuj yog qhov zoo kom tshem tawm bluing kom txawm tias tawm xim ntawm qhov chaw.
Cov txheej txheem ntxuav tuaj yeem ua rau qhov chaw puas tsuaj, tshwj xeeb tshaj yog thaum siv cov tshuaj hnyav.Kev tu tsis raug tuaj yeem tiv thaiv kev tsim cov txheej txheem passivation.Qhov no yog vim li cas ntau tus kws tshaj lij pom zoo kom ntxuav tes ntawm cov welded qhov chaw.
Douville tau hais tias "Nrog kev ntxuav tes, yog tias koj tsis tso cai rau cov pa oxygen rau ntawm qhov chaw rau 24 lossis 48 teev, koj tsis muaj sijhawm los tsim qhov chaw tsis zoo," Douville tau hais.Nws piav qhia tias qhov saum npoo xav tau cov pa oxygen los ua haujlwm nrog cov chromium hauv cov hlau los tsim cov txheej txheem passivation.Hauv qee lub khw muag khoom, nws yog txoj cai los ntxuav, ntim cov khoom, thiab xa lawv tam sim ntawd, uas ua rau cov txheej txheem qeeb thiab ua rau muaj kev pheej hmoo ntawm corrosion.
Cov neeg tsim khoom thiab cov khoom siv vuam feem ntau siv ntau yam ntaub ntawv.Txawm li cas los xij, raws li tau hais ua ntej, kev siv cov hlau tsis muaj steel imposes qee qhov kev txwv.Siv sij hawm los ntxuav ib feem yog thawj kauj ruam zoo, tab sis nws tsuas yog zoo li ib puag ncig nws nyob hauv.
Hatelt tau hais tias nws tseem pom cov haujlwm tsis huv.Qhov tseem ceeb yog kom tshem tawm cov pa roj carbon monoxide hauv qhov chaw ua haujlwm stainless hlau.Nws tsis yog qhov tsis yooj yim rau cov khw siv cov hlau hloov mus rau cov hlau tsis muaj steel tsis muaj kev npaj ua haujlwm zoo rau cov khoom siv no.Qhov no yog qhov yuam kev, tshwj xeeb tshaj yog tias lawv tsis tuaj yeem cais ob cov ntaub ntawv lossis yuav lawv tus kheej cov cuab yeej.
Radaelli tau hais tias "Yog tias koj muaj cov hlau txhuam rau kev sib tsoo lossis npaj cov hlau tsis muaj steel thiab koj siv nws ntawm cov hlau, koj siv tsis tau cov hlau tsis muaj steel lawm," Radaelli hais.“Tam sim no cov txhuam hniav tau paug nrog cov pa roj carbon thiab xeb.Yog tias cov txhuam hniav sib kis, lawv tsis tuaj yeem ntxuav. "
Cov khw muag khoom yuav tsum siv cov cuab yeej sib cais rau kev npaj cov khoom, tab sis lawv yuav tsum tau sau cov cuab yeej "stainless steel nkaus xwb" kom tsis txhob muaj kev sib kis tsis tsim nyog, Hatelt tau hais.
Cov khw yuav tsum xav txog ntau yam thaum xaiv cov khoom siv stainless hlau vuam npaj, suav nrog cov kev xaiv cua sov, hom ntxhia, ceev, thiab grain loj.
Miholix tau hais tias "Kev xaiv lub tshav kub dissipative coated abrasive yog qhov pib zoo," Miholix tau hais."Stainless steel yog ib qho nyuaj heev thiab ua kom muaj cua sov ntau dua thaum sib tsoo dua li cov hlau me me.Cov cua sov yuav tsum tau mus rau qhov chaw, yog li muaj cov txheej txheem uas tso cai rau cov cua sov ntws mus rau ntawm ntug ntawm lub disc, tsis yog nyob ntawm qhov koj tab tom sib tsoo.thaum lub sijhawm ntawd nws zoo tag nrho. "
Kev xaiv ntawm abrasive kuj yog nyob ntawm seb tag nrho cov tiav yuav tsum zoo li cas, nws ntxiv.Nws yeej yog nyob rau hauv lub qhov muag ntawm tus saib.Alumina minerals nyob rau hauv abrasives yog nyob deb ntawm ntau hom siv nyob rau hauv cov txheej txheem xov.Ua kom cov hlau tsis muaj xim xiav rau saum npoo, cov ntxhia silicon carbide yuav tsum tau siv.Nws yog sharper thiab tawm tob txiav uas qhia txog lub teeb sib txawv, ua rau nws xiav.Yog tias tus neeg teb xov tooj tab tom nrhiav rau qhov tshwj xeeb lossis tshwj xeeb nto tiav, nws yog qhov zoo tshaj los tham nrog tus neeg muag khoom.
"RPM yog qhov teeb meem loj," Hatelt hais.“Cov cuab yeej sib txawv xav tau RPMs sib txawv thiab feem ntau khiav nrawm dhau.Kev siv RPM kom raug muab cov txiaj ntsig tau zoo tshaj plaws, ob qho tib si ntawm kev ua haujlwm sai npaum li cas thiab qhov zoo.Nrhiav seb koj xav tau dab tsi tiav thiab ntsuas nws li cas. "
Douville ntxiv tias kev nqis peev hauv cov cuab yeej ua kom nrawm nrawm yog ib txoj hauv kev los daws cov teeb meem ceev.Ntau tus neeg teb xov tooj sim lub tshuab sib tsoo kom tiav, tab sis nws tsuas yog muaj kev kub ceev rau kev txiav.Ua tiav cov txheej txheem yuav tsum ua kom qeeb.Xaiv lub cuab yeej ua tiav qhov sib txawv yuav txuag sijhawm thiab nyiaj txiag thiab tso cai rau tus neeg teb xov tooj los kho qhov ua tiav.
Grit kuj tseem ceeb thaum xaiv ib qho abrasive.Tus neeg teb xov tooj yuav tsum pib nrog qhov zoo tshaj plaws grit rau daim ntawv thov.
Pib nrog 60 lossis 80 grit (nruab nrab), tus neeg teb xov tooj tuaj yeem dhia mus rau 120 grit (zoo) thiab 220 grit (zoo heev) yuav luag tam sim, muab cov hlau tsis muaj 4 qhov chaw tiav.
Radaelli tau hais tias "Nws tuaj yeem yog tsawg li peb kauj ruam," Radaelli hais."Txawm li cas los xij, yog tias tus neeg teb xov tooj cuam tshuam nrog cov welds loj, nws tsis tuaj yeem pib nrog 60 lossis 80 grit thiab tuaj yeem xaiv 24 ( ntxhib heev) lossis 36 ( ntxhib) grit.Qhov no ntxiv ib kauj ruam ntxiv thiab tuaj yeem nyuaj.tshem tawm cov khawb tob hauv cov khoom. "
Tsis tas li ntawd, ntxiv cov tshuaj tiv thaiv kab mob los yog gel tuaj yeem yog tus phooj ywg zoo tshaj plaws, tab sis nws feem ntau raug saib xyuas thaum vuam stainless hlau, Douville hais.Spattered qhov chaw yuav tsum tau muab tshem tawm, uas tuaj yeem khawb qhov saum npoo, xav tau cov txheej txheem sanding ntxiv thiab siv sijhawm ntau dua.Cov kauj ruam no tuaj yeem tshem tawm tau yooj yim nrog lub ntsej muag tiv thaiv.
Lindsay Luminoso, tus kws kho mob koom nrog, pab txhawb rau Canadian Metalworking thiab Canadian Fabricating & Vuam. Lindsay Luminoso, tus kws kho mob koom nrog, pab txhawb rau Canadian Metalworking thiab Canadian Fabricating & Vuam. Линдси Луминосо, помощник редактора, вносит свой вклад как в Canadian Metalworking, так и в Canadian Fabricating & Vuam. Lindsey Luminoso, Associate Editor, pab txhawb rau Canadian Metalworking thiab Canadian Fabricating & Vuam.Lindsey Luminoso, Associate Editor, pab txhawb rau Hlau Fabrication Canada thiab Fabrication thiab Vuam Canada.Nws yog Associate Editor / Web Editor ntawm Hlau Fabrication Canada los ntawm 2014 txog 2016 thiab tsis ntev los no Associate Editor hauv Lub Tsev Haujlwm Tsim Kho.
Luminoso tuav daim Bachelor of Arts degree los ntawm Carleton University, Bachelor of Education degree los ntawm University of Ottawa, thiab Daim Ntawv Pov Thawj Kawm Tiav hauv Phau Ntawv, Ntawv Xov Xwm, thiab Digital Publishing los ntawm Centennial College.
Nyob twj ywm nrog cov xov xwm tshiab, cov xwm txheej thiab thev naus laus zis thoob plaws txhua yam hlau los ntawm peb ob tsab ntawv xov xwm txhua hli sau tshwj xeeb rau cov tuam txhab Canadian!
Tam sim no nrog tag nrho nkag mus rau Canadian Metalworking digital tsab, yooj yim nkag mus rau cov peev txheej muaj txiaj ntsig kev lag luam.
Tam sim no nrog kev nkag mus rau digital tag nrho rau Made in Canada thiab Weld, koj tau yooj yim nkag mus rau cov khoom lag luam muaj txiaj ntsig.
Taw qhia txoj kev ntse dua rau tshuaj tsuag.Qhia qhov zoo tshaj plaws ntawm 3M kev tshawb fawb hauv ib qho ntawm cov ntse tshaj plaws, phom sij tshaj plaws hauv ntiaj teb.