Vanhu vanowanzotenga pre-machine simbi isina tsvina, izvo zvinowedzera kuoma kwezvinhu izvo vashandisi vanofanirwa kufunga nezvazvo.
Kufanana nezvinhu zvakawanda, simbi isina tsvina ine zvakawanda zvinobatsira uye zvisingabatsiri.Simbi inonzi "stainless simbi" kana alloy iine kanenge 10.5% chromium, iyo inoumba oxide layer inoita kuti acid uye corrosion resistant.Iyi kupikisa kwehutu kunogona kuvandudzwa nekuwedzera chromium content uye kuwedzera mamwe alloying agents.
Izvo zvinhu zve "stainless simbi" zvivakwa, kuderera kwekugadzirisa, kusimba, uye akasiyana epamusoro pekupedzisira anoita kuti akwanise maindasitiri akadai sekuvaka, fenicha, chikafu nechinwiwa, zvekurapa, uye zvimwe zvakawanda zvinoshandiswa zvinoda simba uye kusakara kwesimbi.
Simbi isina tsvina inowanzova inodhura kupfuura mamwe masimbi.Zvisinei, inopa simba-ku-uremu chiyero chezviyero, zvichibvumira kushandiswa kwehutete hwezvinhu zvakasvibirira zvichienzaniswa nemakiredhi akajairwa, izvo zvinogona kutungamirira kumari yekuchengetedza mari.Nekuda kwemari yayo yose, zvitoro zvinoda kuve nechokwadi kuti vari kushandisa zvigadziro zvakakodzera kuti zvidzivise tsvina inodhura uye rework yechinhu ichi.
Simbi isina tsvina inowanzoonekwa seyakaoma kusonerera nekuti inobvisa kupisa nekukurumidza uye inoda kungwarirwa kukuru mumatanho ekupedzisira ekupedzisa nekupukuta.
Kushanda nesimbi isina tsvina kazhinji kunoda ane ruzivo rwakanyanya welder kana opareta pane kushanda nekabhoni simbi, iyo inowanzova yakasimba.Latitude yaro inogona kuderedzwa kana mamwe maparameter aiswa, kunyanya panguva yewelding.Nekuda kwekudhura kwesimbi isina tsvina, zvine musoro kuti vashandi vane ruzivo vakawanda vashandise.
"Vanhu vanowanzotenga simbi isina tsvina nekuda kwekupera kwayo," anodaro Jonathan Douville, maneja wechigadzirwa chepamusoro chetsvakiridzo nekusimudzira pasi rose paWalter Surface Technologies muPointe-Claire, Quebec.
Ingave saizi 4 mutsara wekugadzira mutsara kana saizi 8 girazi kupera, mushandisi anofanira kuona kuti zvinhu zvinoremekedzwa uye kupedzisa hakuna kukuvadzwa panguva yekubata nekugadzirisa.Izvi zvinogonawo kudzikamisa sarudzo dzekugadzirira uye kuchenesa, izvo zvakakosha pakuita kuti chikamu chakanaka chekugadzirwa.
"Paunenge uchishanda nechinhu ichi, chinhu chekutanga kuita kuve nechokwadi kuti chakachena, chakachena, chakachena," akadaro Rick Hatelt, Canada Country Manager wePFERD Ontario, Mississauga, Ontario. oxidation."
Paunenge uchishandisa simbi isina tsvina, zvinhu uye zvakapoteredzwa zvakapoteredza zvinofanira kucheneswa.Kubvisa mafuta nepurasitiki zvakasara kubva kune zvinhu inzvimbo yakanaka yekutanga.Kusvibiswa kwesimbi isina tsvina kunogona kukonzera oxidation, asi inogonawo kuva nechinetso panguva yekugadzira uye inogona kukonzera kukanganisa.Saka, zvakakosha kuchenesa nzvimbo isati yatanga solder.
Nzvimbo dzepaworkshop hadzisi dzakanyanya kuchenesesa, uye kusvibiswa kwemukati-kati kunogona kunetsa kana uchishanda nesimbi isina tsvina uye kabhoni. Kazhinji chitoro chinomhanyisa mafeni akawanda kana kushandisa mafeferi emhepo kutonhodza vashandi, izvo zvinogona kusundira zvinosvibisa pasi kana kuita kuti condensation idonhe. kana zvasvika pakushanda kwewelding.
Zvakakosha kubvisa kushanduka kwemavara kuti kuve nechokwadi chokuti ngura haina kuvaka nekufamba kwenguva uye kuderedza chimiro chese.Zvakanakawo kubvisa bluing kunyange kunze kwemavara epamusoro.
MuCanada, nekuda kwekutonhora kwakanyanya uye yechando mamiriro ekunze, kusarudza giredhi rakakodzera resimbi isina tsvina kunokosha.Douville akatsanangura kuti zvitoro zvakawanda pakutanga zvakasarudza 304 nekuda kwemutengo wayo.Asi kana chitoro chaizoshandisa zvinhu kunze, aizokurudzira kuchinjisa ku316, kunyangwe iyo inodhura zvakapetwa kaviri.304 inotapukirwa nekuora kana ikashandiswa kana kuchengetwa mafomu ekunze kana kuchengetwa kwekunze kwekunze kwakachena. pamusoro, kubvisa passivation layer uye pakupedzisira kuita kuti iite ngura zvakare.
“Kugadzira weld kunokosha nokuda kwezvikonzero zvikuru zvakawanda,” anodaro Gabi Miholics, nyanzvi yokuvandudza maapplication, Abrasive Systems Division, 3M Canada, London, Ontario.” Kubviswa kwe ngura, pendi uye machamfers zvinokosha nokuda kwokunama kwakakodzera.
Hatelt anowedzera kuti kuchenesa nzvimbo kwakakosha, asi pre-weld kugadzirira kunogona zvakare kusanganisira chamfering zvinhu kuti ive nechokwadi chekunamatira weld uye kusimba.
Kune simbi yesimbi isina tsvina, zvakakosha kuti usarudze simbi yakakodzera yekuzadza kwegiredhi inoshandiswa.Simbi isina tsvina inonyanya kunzwisiswa uye inoda kuti welding seams isimbiswe nemhando imwechete yezvinhu.Semuyenzaniso, 316 base metal inoda 316 filler metal.Welders haigoni kungoshandisa chero rudzi rwesimbi yekuzadza, giredhi imwe neimwe isina tsvina inoda chaiyo yekuzadza isu.
"Paunenge uchipisa simbi isina tsvina, welder anofanirwa kutarisa tembiricha," akadaro Michael Radaelli, maneja wechigadzirwa kuNorton | Saint-Gobain Abrasives, Worcester, MA. ”Kune michina yakawanda yakasiyana inogona kushandiswa kuyera tembiricha yeweld uye chikamu sezvo welder inopisa, nekuti kana pakatsemuka musimbi isina tsvina, chikamu chacho chinoparara.
Radaelli akawedzera kuti welder inoda kuve nechokwadi kuti haagari munzvimbo imwe chete kwenguva yakareba.Multilayer welding inzira yakanaka yekuchengetedza substrate kubva pakupisa.Kugara kwenguva refu kwechigadziko chesimbi isina tsvina kunogona kukonzera kupisa uye kuputika.
"Kupisa nesimbi isina tsvina kunogona kutora nguva yakawanda, asi zvakare hunyanzvi hunoda maoko ane ruzivo," akadaro Radaelli.
Kugadzirira kwepashure-weld kunoenderana nechigadzirwa chekupedzisira uye kushandiswa kwayo.Mune dzimwe nguva, Miholics akatsanangura, weld haisati yamboonekwa, saka chete kucheneswa kwepashure-weld kunodiwa, uye chero spatter inooneka inobviswa nekukurumidza.
"Harisi iro ruvara ndiro dambudziko," akadaro Miholics.
Kusarudza inosiyana yekumhanyisa yekupedzisa chishandiso kunochengetedza nguva nemari uye kubvumira mushandisi kuti aenderane nekupedzisa.
Zvakakosha kubvisa kushanduka kwemavara kuti kuve nechokwadi chokuti ngura haina kuvaka nekufamba kwenguva uye kuderedza chimiro chese.Zvakanakawo kubvisa bluing kunyange kunze kwemavara epamusoro.
Nzira yekuchenesa inogona kukuvadza nzvimbo, kunyanya kana makemikari ane utsinye anoshandiswa.Kuchenesa kusina kunaka kunogona kudzivirira kuumbwa kwepasi passivation layer.Ichi ndicho chikonzero nyanzvi dzakawanda dzinokurudzira kuchenesa kwebhuku rezvikamu izvi zvakasungirirwa.
"Paunenge uchiita kuchenesa kwemaoko, kana iwe usingabvumiri kuti okisijeni iite nechepamusoro kwemaawa makumi maviri nemana kana makumi mana nemasere, iwe hauna nguva yekuvaka nzvimbo yepasi," akadaro Douville.Akatsanangura kuti nzvimbo yacho inoda oxygen kuti iite nekromium mu alloy kuti iite passivation layer.Zvimwe zvitoro zvinowanzoita kuchenesa, kutakura zvikamu uye kuzvitumira nokukurumidza, izvo zvinowedzera kukanganisa kwemaitiro.
Zvinowanzoitika kune vanogadzira uye welders kuti vashandise zvinhu zvakawanda.Zvisinei, sezvakambotaurwa, kushandiswa kwesimbi isina tsvina kunowedzera zvimwe zvisingakwanisi.Kutora nguva yekuchenesa chikamu idanho rakanaka rokutanga, asi rakanaka chete semamiriro ezvinhu arimo.
Hatelt akati anoramba achiona nzvimbo dzebasa dzakasvibiswa.Kubvisa kuvapo kwekabhoni munzvimbo yekushanda kwesimbi isina tsvina chinhu chinokosha.Hazvisi zvisizvo kuti zvitoro zvinoshandisa simbi zvishandure kusimbi isina tsvina pasina kugadzirira zvakanaka nzvimbo yebasa nokuda kwechinhu ichi.Ichi chikanganiso, kunyanya kana vasingakwanisi kuparadzanisa zvinhu zviviri kana kutenga mudziyo wavo.
“Kana uine bhurashi rewaya rekukuya kana kugadzira simbi isina tsvina, uye ukaishandisa pacarbon steel, hauchakwanisi kushandisa simbi isina tsvina,” akadaro Radaelli.” Mabhurashi acho ava kusvibiswa necarbon uye ngura.
Zvitoro zvinofanirwa kushandisa maturusi akasiyana kugadzirira zvinhu, asi zvakare vanofanirwa kunyora maturusi "simbi isina tsvina chete" kudzivirira kusvibiswa kusiri madikanwa, akadaro Hatelt.
Zvitoro zvinofanirwa kufunga zvinhu zvakawanda pakusarudza simbi isina tsvina weld prep maturusi, kusanganisira kupisa kupisa, mhando yemaminerari, kumhanya uye saizi yezviyo.
"Kusarudza abrasive ine coating inobvisa kupisa inzvimbo yakanaka yekutanga," akadaro Miholics."Simbi isina tsvina yakaoma kwazvo uye inogadzira kupisa kwakawanda pakukuya kupfuura simbi yakapfava.Kupisa kunofanira kuenda kune imwe nzvimbo, saka pane chekupfeka chinoita kuti kupisa kuende kumucheto kwedhisiki pane kungogara pauri kugaya Panguva iyoyo, zvaive zvakanaka."
Kusarudza abrasive kunobvawo pane kuti kupera kwese kunofanira kutaridzika sei, anowedzera.Iri muziso remuoni.Alumina minerals in abrasives ndiyo yakanyanya kunyanya kushandiswa pakupedza matanho.Kuita kuti simbi isina tsvina ionekwe yebhuruu pamusoro, iyo mineral silicon carbide inofanira kushandiswa.Iyo yakapinza uye inosiya zvidimbu zvakadzika zvinoratidzira chiedza cheblue kana kuti chinoratidzika zvakasiyana-siyana. kutaura nemutengesi.
"RPM idambudziko guru," akadaro Hatelt. "Zvishandiso zvakasiyana zvinoda maRPM akasiyana, uye zvinowanzomhanya zvakanyanya. Kushandisa RPM yakarurama kunovimbisa migumisiro yakanakisisa, zvose maererano nekukurumidzira basa rinoitwa uye kuti rinoitwa sei. Ziva kuti chii chinopedzisa chaunoda uye kuti Kuyera sei."
Douville akawedzera kuti kuisa mari mumaturusi ekupedzisa-inomhanya-mhanya ndiyo imwe nzira yekukunda nyaya dzekumhanya.Vashandi vakawanda vanoedza grinder yemazuva ose kuti vapedze, asi inongova nehupamhi hwekucheka.Kuzadza nzira kunoda kunonoka.Kusarudza chigadziro chekupedza kukurumidza kunochengetedza nguva nemari uye kubvumira mushandisi kuti aenderane nekupedzisa.
Uyewo, grit inokosha pakusarudza abrasive.Mushandi anofanira kutanga negrit yakanakisisa yekushandiswa.
Kutanga ne 60 kana 80 (yepakati) grit, mufambisi angangoita pakarepo kusvetukira kune 120 (yakanaka) grit uye mu 220 (yakanaka kwazvo) grit, iyo ichapa isina tsvina No. 4 kupera.
"Zvinogona kunge zviri nyore sematanho matatu," akadaro Radaelli. "Zvisinei, kana mushandisi ari kubata nehombe ye weld, haakwanisi kutanga ne 60 kana 80 grit, uye angaenda kune 24 (yakaoma kwazvo) kana 36 (yakaoma) grit. Izvi zvinowedzera imwe nhanho uye zvinogona kuva zvakaoma kubvisa muzvinhu Pane macratches akadzika.
Uyezve, kuwedzera anti-spatter spray kana gel inogona kuva shamwari yepamusoro yewelder, asi inowanzoregererwa kana welding simbi isina tsvina, inodaro Douville.Parts ine spatter inoda kubviswa, iyo inogona kukwenya pamusoro, inoda mamwe matanho ekukuya uye kuparadza nguva yakawanda.Iyi nhanho inogona kubviswa nyore nyore ne-anti-splash system.
Lindsay Luminoso, Associate Editor, anobatsira kuMetal Fabrication Canada uye Fabrication uye Welding Canada.Kubva 2014-2016, akanga ari Associate Editor / Web Editor paMetal Fabrication Canada, nguva pfupi yapfuura seAssociate Editor yeDesign Engineering.
Luminoso ane dhigirii reBachelor of Arts kubva kuCarleton University, dhigirii reBachelor of Education kubva kuYunivhesiti yeOttawa, uye Chitupa cheGraduate muMabhuku, Magazini uye Digital Publishing kubva kuCentennial College.
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Ikozvino nekuwana kuzere kudhijitari yeCanadian Metalworking, kuwana nyore kune yakakosha indasitiri zviwanikwa.
Ikozvino nekuwana kuzere kudhijitari yedhijitari yeMade muCanada uye Welding, kuwana nyore kune yakakosha indasitiri zviwanikwa.
Randy McDonald, Retired Product Manager kuOvertone, anogovera matipi uye mazano kubva kumakore ake makumi mana echiitiko.Kushandisa FEIN WPO 14-25E variable variable polisher uye kupedza uye kukwenenzvera zvinhu kubva kuFEIN Canada mutsara wakakura wezvishandiso zvekupukuta, Randy anotifambisa kuburikidza nekuita nhanho nhanho.