Insimbi engagqwali iza ngezindlela eziningi ezivamile.Kubalulekile ukwazi ukuthi lezi ziphetho ezivamile ziyini nokuthi kungani zibalulekile.Izinto ezintsha zakamuva zobuchwepheshe obunama-abrasive zinganciphisa izinyathelo zenqubo ukuze kulethwe isiphetho esifiswayo, okuhlanganisa nesicwebezelisi esifunwa ngemva kwalokho.
Insimbi engagqwali ingaba nzima ukusebenza ngayo, kodwa umkhiqizo osuphelile unikeza okukodwa kokubukeka okuhle kakhulu futhi wenze wonke umsebenzi uwufanele.Kuyamukelwa ngokuvamile ukuthi ukusebenzisa igrit ecolekile ekulandeleni kwesihlabathi kungasusa amaphethini okuklwebheka adlule futhi kuthuthukise isiphetho, kodwa kunezinyathelo eziningi eziphelele okufanele uziqaphele lapho usebenzisa ukulandelana kwegrit okuningi ukuze ufinyelele isiphetho osifunayo.
Insimbi engagqwali iza ngezindlela eziningi ezivamile.Kubalulekile ukwazi ukuthi lezi ziphetho ezivamile ziyini nokuthi kungani zibalulekile.Izinto ezintsha zakamuva zobuchwepheshe obunama-abrasive zinganciphisa izinyathelo zenqubo ukuze kulethwe isiphetho esifiswayo, okuhlanganisa nesicwebezelisi esifunwa ngemva kwalokho.
I-Specialty Steel Industry yaseNyakatho Melika (SSINA) ichaza amazinga emboni nalapho imikhiqizo isebenzisa izinombolo zokuqeda ezihlukene.
Inombolo 1 yenziwe.Lokhu kulungiswa kwendawo kwenziwa ngokugoqa (i-hot rolling) insimbi engagqwali eye yashiselwa ngaphambi kokugingqika.Kudingeka ukuqedwa okuncane kakhulu, yingakho kubhekwa njengokubi.Imikhiqizo evamile enoNombolo 1 izifudumezi zomoya, amabhokisi okudonsa amanzi, ama-boiler baffles, izingxenye ezihlukahlukene zesithando somlilo, nezinjini zegesi, uma sibala ezimbalwa.
I-No. 2B iphelele.Le ndawo ekhanyayo, egoqekile ifana nesibuko esinamafu futhi ayidingi izinyathelo zokuqeda.Izingxenye ezinomkhawulo ongu-2B zifaka amapani omhlaba wonke, izinto zokutshala amakhemikhali, izinto zokusika, okomshini wokugaya amaphepha kanye nemishini yokufaka amapayipi.
Futhi esigabeni sesi-2 ukuqedwa kwe-2D.Lokhu kuqedwa kuyiyunifomu, i-matte silver grey kumakhoyili azacile, ubukhulu bawo buncishiswe yinqubo encane yokugoqa ebandayo njengoba kuvame ukusetshenziswa ngokuqeda kwefekthri.I-Pickling noma i-descaling iyadingeka ngemva kokwelashwa kokushisa ukuze kukhishwe i-chromium.I-Pickling ingaba isinyathelo sokugcina sokukhiqiza salokhu kwelashwa kwendawo.
I-Polish No. 3 ibonakala ngemigqa yokupholisha emifushane, ewugqinsi uma kuqhathaniswa, ehambisanayo.Itholwa ngokupholishwa ngomshini ngama-abrasives acolisene ngokuqhubekayo noma ngokudlula amakhoyili kumarola akhethekile acindezela amaphethini phezulu, alingisa ukubukeka kokugqokwa kwemishini.Kuwukuphela kokubukeka okumaphakathi.
Ekupholishweni komshini, igrit engu-50 noma engu-80 ivamise ukusetshenziswa ekuqaleni, futhi igrit engu-100 noma engu-120 ivamise ukusetshenziselwa ukupholisha kokugcina.Amatshe angaphezulu ngokuvamile anobuhwaba obujwayelekile (Ra) obungama-microinches angu-40 noma ngaphansi. , futhi izinsimbi zesayensi ukuphela kwenombolo 3.
Ukuphela kwenombolo 4 iyona evame kakhulu futhi isetshenziswa emshinini nasezimbonini zokudla. Ukubukeka kwayo kubonakala ngemigqa epholishiwe emifushane ehambisanayo enwebeka ngokulinganayo ngobude bekhoyili. Itholwa ngokupholisha ngomshini isiphetho esingunombolo 3 esinama-abrasives acolisekileyo ngokuqhubekayo. Kuye ngezidingo zohlelo lokusebenza, isiphetho sokugcina singaba phakathi kuka-320 grit grit grit grit grit olayini abacoke kakhulu. es.
Ubulukhuni bobuso ngokuvamile buwu-Ra 25 µin.noma ngaphansi. Lokhu kuqedwa kusetshenziswa kakhulu endaweni yokudlela nekhishi, ngaphambili kwesitolo, ukucubungula ukudla nezinto zokusebenza zobisi.Njenge-Fish No. 3, uma umqhubi edinga ukuhlanganisa amashisela noma enze okunye ukuthinta kokuqeda, ulayini opholishiwe owumphumela uba mude kunolayini osemkhiqizweni opholishwe ngumkhiqizi noma izindawo zokupholisha indawo okutholakala kuyo ithangi le-rolling kanye ne-rolling road. amaphaneli okulawula, nama-dispensers amanzi.
I-Polish No. 3 ibonakala ngemigqa yokupholisha emifushane, ewugqinsi uma kuqhathaniswa, ehambisanayo.Itholwa ngokupholishwa ngomshini ngama-abrasives acolisene ngokuqhubekayo noma ngokudlula amakhoyili kumarola akhethekile acindezela amaphethini phezulu, alingisa ukubukeka kokugqokwa kwemishini.Kuwukuphela kokubukeka okumaphakathi.
I-Finish No. 7 icwebezela kakhulu futhi inokubukeka okufana nesibuko.Ipholishelwe ku-320 grit futhi isiphetho esipholishiwe esingu-No. 7 ngokuvamile singatholakala kumakepisi wekholomu, i-trim yokuhlobisa namaphaneli odonga.
Kube nenqubekelaphambili ebalulekile kuma-abrasives asetshenziselwa ukufeza lokhu kuqedwa kwendawo, okusiza abakhiqizi ukuthi bakhiqize izingxenye eziningi ngokuphepha, ngokushesha futhi ngendlela engabizi kakhulu. Amaminerali amasha, amafayibha aqinile kanye nezinhlelo ze-resin ezivimbela ukubola zisiza ukuthuthukisa inqubo yokuqeda.
Lawa ma-abrasives ahlinzeka ngokusikeka okusheshayo, impilo ende, futhi anciphise inani lezinyathelo ezidingekayo ukuze umsebenzi wenziwe.Isibonelo, i-flap enama-microcracks ezinhlayiyeni ze-ceramic inweba ukuphila kwayo ngesilinganiso esincane futhi inikeza isiphetho esingaguquki.
Ukwengeza, ubuchwepheshe obufana nama-abrasives ahlanganisiwe anezinhlayiya ezihlangana ndawonye ukuze zisike ngokushesha futhi zinikeze isiphetho esingcono.Kudinga izinyathelo ezimbalwa kanye ne-inventory encane ehlukumezayo ukwenza umsebenzi, futhi opharetha abaningi babona ukusebenza kahle okukhulu nokonga kwezindleko.
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.
Abakhiqizi banenselelo yokuqedela amakhona kanye ne-radii yezingxenye zensimbi engagqwali.Ukuhlanganisa ama-welds okunzima ukufinyelela kuwo kanye nezindawo zokwakha, kunenqubo eyizinyathelo ezinhlanu edinga isondo lokugaya, i-square pad yamagrits amaningana, kanye nesondo lokugaya iyunifomu.
Okokuqala, ama-opharetha asebenzisa isondo lokugaya ukuze enze imihuzuko ejulile kulezi zingxenye zensimbi engagqwali.Amasondo okugaya ngokuvamile aqinile futhi awaxoleli, okubeka opharetha esimweni esingesihle ekuqaleni.Isinyathelo sokugaya besithatha isikhathi futhi sisashiye imihuzuko obekumele isuswe ngezinyathelo ezintathu ezengeziwe zokuqeda iphedi elilandelwa isifiso sokuqeda amasondo okusanhlamvu okuhlukahlukene.
Ngokushintsha isondo lokugaya libe isondo le-ceramic lobe, opharetha wakwazi ukuqedela ukupholisha esinyathelweni sokuqala.Egcina ukulandelana kwegrit efanayo njengesinyathelo sesibili, u-opharetha washintsha ama-square pads ngesondo le-flap, ukuthuthukisa isikhathi nokuqeda.
Ukukhipha i-80-grit square pad bese uyishintsha nge-mandrel engalukiwe enezinhlayiya ezihlanganisiwe ezilandelwa i-220-grit non-woven mandrel kuvumela opharetha ukuthi akhiqize i-sheen efiselekayo kanye nesiphetho esiphelele futhi kuqede isidingo sesinyathelo sokugcina inqubo yokuqala (sebenzisa isondo lobumbano ukuze uvale isinyathelo).
Ngenxa yokuthuthukiswa kwamasondo e-flapper kanye nobuchwepheshe obungalukiwe, inani lezinyathelo lincishisiwe lisuka kwezinhlanu kuya kwezine, kunciphisa isikhathi sokuqeda ngama-40%, konga izindleko zabasebenzi kanye nemikhiqizo.
Kube nenqubekelaphambili ebalulekile kuma-abrasives asetshenziselwa ukufeza lokhu kuqedwa kwendawo, okusiza abakhiqizi ukuthi bakhiqize izingxenye eziningi ngokuphepha, ngokushesha futhi ngendlela engabizi kakhulu.
I-WELDER, eyake yabizwa ngokuthi i-Practical Welding Today, ibonisa abantu bangempela abenza imikhiqizo esiyisebenzisayo nesisebenza ngayo nsuku zonke.Lo magazini ususebenzele umphakathi wokushisela eNyakatho Melika iminyaka engaphezu kwengu-20.
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