Cov neeg feem ntau yuav cov khoom siv ua ntej cov hlau tsis huv, 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.A steel yog suav tias yog "stainless steel" yog tias cov hlau muaj tsawg kawg yog 10.5% chromium, uas tsim cov txheej txheem oxide uas ua rau nws cov kua qaub 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 khoom siv alloying ntxiv.
Cov khoom siv "stainless steel" cov khoom, tsis tshua muaj txij nkawm, 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 xav tau lub zog thiab corrosion kuj ntawm steel.
Stainless hlau nyhav yuav kim dua li lwm cov steels.Txawm li cas los xij, nws muaj qhov zoo ntawm qhov hnyav-rau-qhov hnyav piv, tso cai rau kev siv cov khoom siv thinner thicknesses piv rau cov qib pa, uas tuaj yeem ua rau cov nqi txuag.Vim nws cov nqi tag nrho, cov khw muag khoom yuav tsum xyuas kom meej tias lawv siv cov cuab yeej zoo kom tsis txhob raug nqi pov tseg thiab rov ua dua ntawm cov khoom siv no.
Stainless hlau feem ntau suav hais tias nyuaj rau vuam vim nws dissipates tshav kub sai thiab xav tau kev saib xyuas zoo nyob rau hauv qhov kawg xov thiab polishing theem.
Ua hauj lwm nrog stainless hlau feem ntau yuav tsum muaj kev paub ntau tshaj welder lossis tus neeg teb xov tooj ntau dua li kev ua haujlwm nrog cov hlau, uas zoo li ua kom muaj zog dua.Nws txoj kab latitude yuav raug txo qis thaum qee yam tsis tau qhia, tshwj xeeb tshaj yog thaum vuam.Vim tus nqi siab ntawm stainless hlau, nws ua rau kev txiav txim siab rau ntau tus neeg ua haujlwm paub siv nws.
Jonathan Douville, tus thawj coj ntawm cov khoom lag luam loj rau kev tshawb fawb thoob ntiaj teb thiab kev txhim kho ntawm Walter Surface Technologies hauv Pointe-Claire, Quebec hais tias "Tib neeg feem ntau yuav cov hlau tsis muaj steel vim nws ua tiav," 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 los yog qhov loj 8 daim iav tiav, tus neeg teb xov tooj yuav tsum xyuas kom meej tias cov khoom muaj kev hwm thiab kev ua tiav tsis raug puas thaum tuav thiab ua haujlwm.Qhov no tuaj yeem txwv cov kev xaiv rau kev npaj thiab tu, uas yog ib qho tseem ceeb kom ntseeg tau tias cov khoom zoo.
"Thaum ua haujlwm nrog cov khoom no, thawj qhov yuav tsum tau ua yog xyuas kom nws huv si, huv si, huv si," said Rick Hatelt, Canada Tus Thawj Saib Xyuas Lub Tebchaws rau PFERD Ontario, Mississauga, Ontario. kom txo qis oxidation. "
Thaum siv cov hlau tsis huv, cov khoom siv thiab ib puag ncig ib puag ncig yuav tsum tau ntxuav. Tshem tawm cov roj thiab cov yas seem ntawm cov ntaub ntawv yog qhov chaw zoo pib.Cov kab mob ntawm cov hlau tsis huv tuaj yeem ua rau oxidation, tab sis lawv kuj tuaj yeem muaj teeb meem thaum vuam thiab tuaj yeem ua rau muaj qhov tsis xws.
Rhiav ib puag ncig tsis yog qhov huv tshaj plaws, thiab kev sib kis kab mob tuaj yeem yog qhov teeb meem thaum ua haujlwm nrog cov hlau tsis huv thiab cov pa roj carbon steel. Feem ntau lub khw khiav ntau cov kiv cua los yog siv cov cua txias rau cov neeg ua haujlwm txias, uas tuaj yeem thawb cov kab mob mus rau hauv pem teb los yog ua rau hws los ntawm cov khoom siv raw. zoo vuam.
Nws yog ib qho tseem ceeb kom tshem tawm cov xim tsis muaj xim kom ntseeg tau tias xeb tsis tsim nyob rau lub sijhawm thiab tsis muaj zog ntawm tag nrho cov qauv.
Hauv tebchaws Canada, vim huab cua txias thiab lub caij ntuj no, xaiv cov qib zoo ntawm stainless hlau yog qhov tseem ceeb.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 siv sab nraud, nws xav kom hloov mus rau 316, txawm tias nws raug nqi ob zaug ntau dua.304 yog qhov cuam tshuam rau corrosion yog siv los yog khaws cia rau sab nraum zoov txheej txheej, txawm tias cov txheej txheem sab nraud tuaj yeem raug tshem tawm. nto, eroding txheej passivation thiab nws thiaj li ua rau nws xeb dua.
Gabi Miholics, tus kws tshaj lij kev tsim kho kev lag luam, Abrasive Systems Division, 3M Canada, London, Ontario hais tias "Kev tshem tawm cov xeb, xim thiab chamfers yog qhov tsim nyog rau kev vuam zoo. Yuav tsum tsis txhob muaj kab mob ntawm qhov chaw vuam uas tuaj yeem ua rau daim ntawv cog lus tsis muaj zog."
Hatelt hais ntxiv tias kev tu thaj chaw yog qhov tseem ceeb, tab sis kev npaj ua ntej vuam tuaj yeem suav nrog chamfering cov khoom kom ntseeg tau tias muaj kev sib raug zoo thiab lub zog.
Rau cov hlau tsis muaj hlau vuam, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov hlau muab tub lim kom raug rau qib siv.Stainless steel yog tshwj xeeb tshaj yog rhiab heev thiab yuav tsum tau welding seams kom tau ntawv pov thawj nrog tib hom khoom.Piv txwv li, 316 lub hauv paus hlau yuav tsum tau 316 muab tub lim hlau. Welders tsis tuaj yeem tsuas yog siv txhua hom muab tub lim hlau, txhua qib stainless yuav tsum muaj cov khoom siv tshwj xeeb.
"Thaum welding stainless hlau, welder yeej yuav tsum tau saib qhov kub thiab txias," said Michael Radaelli, tus thawj tswj khoom ntawm Norton | Saint-Gobain Abrasives, Worcester, MA. "Muaj ntau yam khoom siv sib txawv uas tuaj yeem siv los ntsuas qhov kub thiab txias ntawm qhov vuam thiab qhov chaw raws li cov welder heats li, vim tias yog tias muaj cov kab nrib pleb hauv cov hlau tsis huv, ib feem ntawm qhov pib puas lawm."
Radaelli ntxiv hais tias tus welder yuav tsum xyuas kom meej tias nws tsis nyob hauv tib cheeb tsam ntev.Multilayer welding yog ib txoj hauv kev zoo kom lub substrate los ntawm overheating.Ntev vuam ntawm lub hauv paus stainless hlau yuav ua rau nws overheat thiab tawg.
"Vuam nrog stainless hlau tuaj yeem siv sijhawm ntau dua, tab sis nws kuj yog ib qho kev kos duab uas yuav tsum muaj kev paub txog tes," Radaelli hais.
Kev npaj tom qab vuam tiag tiag yog nyob ntawm cov khoom kawg thiab nws daim ntawv thov. Qee qhov, Miholics tau piav qhia, qhov vuam tsis tau pom tiag tiag, yog li tsuas yog txwv kev ntxuav tom qab vuam tsuas yog yuav tsum tau, thiab cov txheej txheem pom tau raug tshem tawm sai sai.Los yog cov weld yuav tsum tau leveled los yog ntxuav, tab sis tsis muaj qhov tshwj xeeb kev npaj yog yuav tsum tau.
"Nws tsis yog xim uas yog qhov teeb meem," Miholics hais tias "Qhov kev hloov pauv saum npoo no qhia tias cov khoom hlau tau hloov pauv thiab tam sim no tuaj yeem oxidize / xeb."
Xaiv qhov sib txawv ntawm cov cuab yeej ua tiav yuav txuag lub sijhawm thiab nyiaj txiag thiab tso cai rau tus neeg teb xov tooj kom phim qhov ua tiav.
Nws yog ib qho tseem ceeb kom tshem tawm cov xim tsis muaj xim kom ntseeg tau tias xeb tsis tsim nyob rau lub sijhawm thiab tsis muaj zog ntawm tag nrho cov qauv.
Cov txheej txheem ntxuav tuaj yeem ua rau cov 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 cov welded qhov chaw.
Douville tau hais tias "Thaum koj ua kev ntxuav tes, yog tias koj tsis tso pa oxygen rau saum npoo rau 24 lossis 48 teev, koj tsis muaj sijhawm los tsim qhov chaw tsis zoo," Douville hais.
Nws yog ib qho ntawm cov tuam ntxhab thiab cov welders siv ntau yam ntaub ntawv.Txawm li cas los xij, raws li tau hais ua ntej, kev siv cov hlau tsis muaj steel ntxiv qee qhov kev txwv.Tsev lub sij hawm los ntxuav qhov 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 chaw ua haujlwm tsis huv.Kev tshem tawm cov pa roj carbon monoxide hauv ib puag ncig ua haujlwm stainless hlau yog qhov tseem ceeb.Nws tsis yog qhov tsis tshua muaj rau cov khw uas siv cov hlau hloov mus rau stainless hlau yam tsis tau npaj qhov chaw 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 huv, thiab koj siv cov pa roj carbon steel, koj siv tsis tau stainless hlau ntxiv lawm," Radaelli hais tias.
Cov khw muag khoom yuav tsum siv cov cuab yeej sib cais los npaj cov ntaub ntawv, 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 stainless hlau weld prep cov cuab yeej, nrog rau cov kev xaiv tshav kub dissipation, ntxhia hom, ceev thiab grain loj.
Miholics hais tias "Xaiv cov abrasive nrog lub tshav kub-dissipating txheej yog qhov zoo pib," Miholics hais tias "Stainless steel yog ib qho nyuaj heev thiab yuav ua kom muaj cua sov ntau dua thaum sib tsoo dua li cov hlau me me. Cov cua sov yuav tsum 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 es tsis txhob nyob qhov twg koj yuav sib tsoo thaum lub sij hawm ntawd, nws yog qhov zoo tagnrho. "
Xaiv ib qho abrasive kuj yog nyob ntawm seb tag nrho cov tiav yuav tsum zoo li cas, nws ntxiv.Nws yog tiag tiag nyob rau hauv lub qhov muag ntawm beholder.Alumina minerals nyob rau hauv abrasives yog nyob deb ntawm cov feem ntau hom siv nyob rau hauv finishing cov kauj ruam.Ua kom stainless hlau tshwm xiav rau saum npoo, cov ntxhia silicon carbide yuav tsum tau siv.Nws yog sharper thiab nplooj ntxaum txiav uas muaj kev cuam tshuam xiav tus neeg teb xov tooj, tshwj xeeb tshaj yog ua kom tiav lub teeb. tham nrog tus neeg muag khoom.
"RPM yog qhov teeb meem loj," Hatelt hais tias. "Cov cuab yeej sib txawv xav tau RPMs sib txawv, thiab lawv feem ntau khiav nrawm heev. Kev siv RPM txoj cai ua kom cov txiaj ntsig zoo tshaj plaws, ob qho tib si ntawm kev ua tiav sai npaum li cas thiab nws ua tau zoo npaum li cas. Paub tias koj xav tau dab tsi tiav thiab ntsuas qhov ntsuas."
Douville tau hais ntxiv tias kev nqis peev hauv cov cuab yeej sib txawv-ceev ua tiav yog ib txoj hauv kev los daws cov teeb meem ceev. Ntau tus neeg ua haujlwm sim lub tshuab ua kom tiav, tab sis nws tsuas yog muaj kev kub ceev rau kev txiav. Ua kom tiav cov txheej txheem yuav tsum tau ua kom qeeb qeeb. Xaiv qhov sib txawv ntawm qhov sib txawv ntawm cov cuab yeej ua tiav yuav txuag lub sijhawm thiab nyiaj txiag thiab tso cai rau tus neeg teb xov tooj kom phim qhov ua tiav.
Tsis tas li ntawd, grit yog ib qho 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 los yog 80 (nruab nrab) grit, tus neeg teb xov tooj yuav luag tam sim ntawd dhia mus rau 120 (zoo) grit thiab mus rau 220 (zoo heev) grit, uas yuav ua rau cov hlau tsis muaj 4 tiav.
"Nws tuaj yeem yooj yim li peb kauj ruam," Radaelli tau hais. "Txawm li cas los xij, yog tias tus neeg teb xov tooj cuam tshuam nrog lub vuam loj, nws tsis tuaj yeem pib nrog 60 lossis 80 grit, thiab tej zaum yuav mus rau 24 (ntxhiab heev) lossis 36 ( ntxhib) grit. Qhov no ntxiv ib kauj ruam ntxiv thiab tuaj yeem nyuaj rau tshem tawm cov khoom muaj khawb tob rau ntawm nws. "
Ntxiv rau, ntxiv cov tshuaj tiv thaiv kab mob los yog gel tuaj yeem yog tus phooj ywg zoo tshaj plaws, tab sis nws feem ntau tsis saib xyuas thaum vuam stainless hlau, hais tias Douville.Parts nrog spatter yuav tsum tau muab tshem tawm, uas tuaj yeem khawb qhov saum npoo, yuav tsum tau sib tsoo cov kauj ruam ntxiv thiab nkim sij hawm ntau dua.Cov kauj ruam no tuaj yeem tshem tawm tau yooj yim nrog kev tiv thaiv txaws.
Lindsay Luminoso, Associate Editor, pab txhawb rau Hlau Fabrication Canada thiab Fabrication thiab Vuam Canada.Los ntawm 2014-2016, nws yog Associate Editor/Web Editor ntawm Hlau Fabrication Canada, feem ntau tsis ntev los no ua Associate Editor rau Tsim Engineering.
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, Cov Ntawv Xov Xwm thiab Digital Publishing los ntawm Centennial College.
Khaws cov xov xwm tshiab, xwm txheej thiab thev naus laus zis ntawm 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 kev nkag mus rau tag nrho cov ntawv digital ntawm Canadian Metalworking, yooj yim nkag mus rau cov peev txheej tseem ceeb hauv kev lag luam.
Tam sim no nrog kev nkag mus rau tag nrho cov ntawv digital ntawm Made in Canada thiab Vuam, yooj yim nkag mus rau cov khoom lag luam muaj txiaj ntsig.
Randy McDonald, Retired Product Manager ntawm Overtone, qhia cov lus qhia thiab cov lus qhia los ntawm nws 40 xyoo kev paub.Sing a FEIN WPO 14-25E variable speed polisher and finishing and polishing accessories from FEIN Canada's wide line of polishing accessories, Randy walks us through the process step by step.