Ukufakwa kwe-powder kwenza kanjani emisebenzini yasezindaweni ephakeme?

Izinkulungwane Zokuzimisa Kwezinsuku Zokufaka Emphakathini

Ukuziqonda kwezinkulungwane zokuzimisa kwezinsuku kuyisisekelo sokufaka emphakathini kwezinsuku eziningi zokusebenza ngaphandle kwemithombo, ngoba kubhekisa ukuthi kuyasebenza kahle futhi kuyasinda emazimiseni—kukhupha ukungafanele kwezinkinga njengezincanda noma ukungabonakali kwezinsuku.

Ukuzimisa Kwezinsuku Nokuzimisa Kwezinsuku Zokusebenza: Kungani Akukho Mhlaba Wokubuyela

Ukushisa kokuqina ngokuyisisekelo ukuqhuma okufushane kokushisa (imvamisa cishe ngama-300 kuya kuma-400 degrees Fahrenheit) okusetshenziswa lapho kufakwa izembozo ukuncibilika nokuhlanganisa i-powder ibe ungqimba olufanayo. Nokho, izinga lokushisa lokusebenza lisebenza ngendlela ehlukile - lisitshela ukuthi yiliphi izinga lokushisa eliphakeme kakhulu elingakwazi ukusingathwa umbala ngokuphindaphindiwe ukuphila kwawo konke ngaphandle kokuwohloka. Ukuzihlanganisa kungaholela ezinkingeni ezinkulu ngoba ukuqiniswa kahle kudala ukunamathela kokuqala futhi kwakha ifilimu kahle, kuyilapho izinga lokushisa elibonisa ukuthi ukumboza kumelana kanjani nezinto ezinjengokulimala komoya-mpilo, ukufudumeza nokupholisa okuphindaphindiwe, nokunye ukuwohloka kwamakhemikhali ngokuhamba kwesikhathi. Iningi lezinto zokumboza ze-polymer ziqala ukuwohloka ngokushesha lapho zifinyelela cishe kuma-degree angu-500 ngenxa yokuthi lezo zibopho zamakhemikhali ziyahlukana ngenxa yokuchayeka ku-oxygen. Yingakho izincazelo zidinga ukuhlukanisa ngokucacile ukushisa kwesikhashana okuvelayo kulokho okwenzeka ngesikhathi sokusebenza okuvamile ensimini.

Ukuchaza i-Threshold Yokusebenza: Amaphuzu Okusebenza Kwisikhathi Sokufaka Emasimini 300°F kuya ku-1,800°F

Izinkulungwane zokufaka emhlabathini zenzela kwezinye izilinganiso zokugcina amandla okukhanya, kusukela kuma-300 degrees Fahrenheit ukuze kube phakathi kwe-1,800 degrees, ngokuphatha kahle ngokuthi zihlanganiswe njani ngokuchemicali. Izinkulungwane eziphansi kakhulu njenge-epoxy nezinkulungwane zepolyester zenza umsebenzi omuhle ekuvikeleni izinto njengezinkampani zokugcina nezinkampani zokugcina izinto zokusebenza lapho izilinganiso zokugcina ziyaphakathi kwe-300 kuya kuma-600 degrees. Lapho sifuna into eyodwa esingakwazi ukuzimisa izimo ezinamandla kakhulu, izinkulungwane zefluoropolymer nezinkulungwane zenylo nizoba zisebenza, zibuyisela lezi zilinganiso kuma-900 kuya kuma-1,000 degrees kwezindawo njengezindawo zokugcina emhlabathini noma kwezindawo zokugcina izindlela zokugcina amandla. Kumaqondo amaningi amandla kakhulu, kunezinkulungwane ezipheleleyo zezincwadi zokugcina ezihlanganiswe nezincwadi zokugcina zesiSilica nezincwadi zokugcina zesiAlumina ezinamandla kakhulu, ezithabathile izinto zabo nezinkinga zokuvikela kusukela kuma-1,200 kuya kuma-1,800 degrees. Lezi zinkulungwane zihlala ziyagcina iziqondiso njengezinqamulelo zokugcina, izinqamulelo zokugcina zezinkampani zokugcina, nezinqamulelo zokugcina kwezindawo zokugcina izinto zokugcina izinto zokugcina lapho izinkulungwane eziphansi kakhulu zizohlanza kabusha. Iziphansi kakhulu zokugcina azizihlukanise kakhulu ukuzimisa izinto zokugcina ezinamandla kancane kuma-300 degrees, kodwa lapho izilinganiso zokugcina zibuyela phezulu kuma-1,000 degrees, abasebenzi bafuna ukufaka izinkampani zokugcina ezithile zezinto zokugcina zokugcina ukuvikela izinkinga zokugcina kanye nokuvikela izinkinga zokugcina kusukela kuma-1,000 degrees.

Ukuphatha Kwemithambo Kwezinkulungwane Zokugcina Isikhathi Sokubeka Kwemithambo Yokuqondisa

Izinkulungwane eziyisibonelo sezinkulungwane zokugcina ziyabonisa izindlela ezahlukene zokusebenza kwezinkulungwane zokugcina zokubeka, okuyizindlela ezihlukene ngokuchaza kwazo kwezinkulungwane. Ukukhetha umthambo ongcono ubalulekile ukubhekana nezindlela zokuhlanza kwezinkulungwane zokubeka—akukho kuphela isikhathi sokuphepha—kunye nesikhathi sokusebenza, isikhathi sokuphanda kwezinkulungwane, nokubonwa kwezinkulungwane zokugcina.

Epoxy, Polyester, Fluoropolymer, nakwe-Nylon-Based Coating Powder: Ukubonwa Kwemithambo Yokubeka Nokuhlukana Ngaphakathi Kwama-600–1000°F

Izinkulungwane eziphakathi kwezinkulungwane zezindawo zokusebenza ngokupheleleyo ziyafika emaphakathini amaningi uma kubhekwa ukuthi ziyakhula kahle. Faka isibonelo sesipho, sibegina ukuzihlupha kahle uma izintemperetsha ziphuma phezu kwe-600 degrees Fahrenheit ngoba izilinde zokuchaza ziyahlupha ngokuvutha. Lokhu kuhlupha kuyabonisa ukuthi umfanekiso uyahlupha ukugcina emanzini futhi uyahlupha ukukhathala kwezithuthi. I-polyester iyasebenza kahle, iyakhula kuhle phakathi kwe-700 no-800 degrees, kodwa futhi inehluku uma ibhekwa kumfula ngokuphakeme kanye noma ngokuphakeme kwezikhathi eziningi. I-fluoropolymers ne-nylon ziyadlala indima enenhle njengoba ziyakhula kuhle kuhle phakathi kwe-900 no-1000 degrees ngokwesibonelo sezilinde zokuchaza zokubambisana kwe-carbon ne-fluorine nokuthi izimboni zazo ziyabambisana kanjani. Nangona kunjalo, akukho lokhu kwezinkulungwane zokusebenza ngokupheleleyo kusetyenziswa emazweni apho kuneziflamu zokuphakeme kanye nezintemperetsha ezikhulu ezinamandla. Ukuzuzwa kwakho, ziyahlupha kahle kabusha ngaphambi kokufika kwe-1200 degree, okuyenza kuzobizwa ngokungafanele kwezinhlelo zokusebenza zokuphakeme apho izintemperetsha ezikhulu ziyisigaba sokusebenza ngokuphakeme.

Ipowdher yokuqinisa okwenziwe ngamaphutha: Kusiza ukusebenza kwezinkundla zokuphatha amandla nezinkundla zokuphatha izibhamu ngokuphelele kumakhelo we-1,200–1,800°F

Izimpushana zokumboza ezishintshwe nge-ceramics zifinyelela imingcele yezinto ezivamile eziphilayo ngokufaka amanethiwekhi angavumeli ukushisa enziwe ikakhulukazi nge-silica, i-alumina, futhi ngezikhathi ezithile i-zirconia. Lezi zembozo ezikhethekile zingakwazi ukubhekana namazinga okushisa asukela ku-1,200 kuya ku-1,800 degrees Fahrenheit ngaphandle kokuwohloka, okuzenza zibe ezikahle ezindaweni ezinzima njengama-turbine egesi yemvelo, izingxenye zezinhlelo zokukhipha izindiza, nokumboza ngaphakathi kwemishini yokushisa imfucuza. Okubahlukanisa ngempela ukuhlanganisa kwabo okuyingqayizivele kwezakhiwo ze-ceramic ne-polymer ezingeni lezinhlayiyana. Lokhu kubenza bakwazi ukumelana nokuguquka okusheshayo kwamazinga okushisa, bahlale benamathele ngokuqinile ngisho nangemva kokufudumeza nokupholisa ngokuphindaphindiwe okubangela ukuba izembozo ezivamile ze-polymer ziqhekeke. Lapho kwenziwa izivivinyo ezijwayelekile zokujikeleza kokushisa ezinjengezichazwe ku-ASTM D6932 ukucaciswa, lezi zembozo ezithuthukisiwe zihlala isikhathi eside ngokuphindwe kane kunezingubo zendabuko ze-epoxy. Lolo hlobo lokuqina lubaluleke kakhulu emishini engaphansi kokuphepha lapho kungasebenzi khona ukusebenzisa izembozo ezintsha njalo lapho kuhlolwa ukunakekelwa.

Ukuqiniseka Kwempilo Yezinhlelo Zokubhala Ngokusebenza Kwezinsuku Zokusebenza

Amasistimu Okukhupha Isihlwa Nezindawo Zokugcina Ithabhu: Ukubambisana, Ukuchaza Kwezinkumbulo, Nokuvikela Kwezinkumbulo Ngokuphuma Kweminyaka Engaphezu Kwe-5,000 Yezinsuku Zokusebenza

Ukuphila Kwempilo Kwezinsuku Zokusebenza kuyidinga ukusebenza ngokuphinda kabusha kokuphakama Nokukhula—akukho kuphela ukulinganisa kwemilinganiselo Yemphumela. Ukuzimisela Kwemiphumela Yokuzimisela Kuyabeka Amapharti Abochwe Ngokuthintana Kweminyaka Yokusebenza Ngokuphinda Kabusha Ukuze Kuhlanganise Iminyaka Emibili Yezinsuku Zokusebenza. Kumasistimu Okukhupha Isihlwa Nezindawo Zokugcina Ithabhu, Izibalo Zokuzimisela Ziyashiyelwa Ngokuthi:

• Ubunzima Bekudibanisa : Akukho kufakwa Kwemithambo Ngokuphinda Kabusha Kwe-5,000 Ngokuphinda Kabusha Phakathi Kwemilinganiselo Yomlando (-40°F (-40°C)) Noma (185°F (85°C)), Ngokwesibonelo Se-ASTM D6932
• Ukuchaza Kwezinkumbulo : ΔE < 2.0 (ukuguqula Okungakwaziwa Ngokwesibonelo) Ngokuphinda Kabusha Kwemilinganiselo Yomlando, Kukhombisa Ukuthi Izinkumbulo Nezinkhulumo Ziyathinta Ngokuphinda Kabusha Nokuthinta Kwemphumela
• Uhlola Lwesibhedlela : Akukho kuthinta Kwemphumela Ngokuphinda Kabusha Kwe-500+ Emahorayi Yokuqinisa Kwemilili (ASTM B117), Kukhombisa Ukuthi Ukuthinta Kwemphumela Kuyasebenza Ngokuphinda Kabusha

Kungani lezi zinombolo ziyathatha ubukhulu kakhulu? Kuyinto yokuthi ukuguqula kwesikhathi sokushisa kusenza ukuphela kwezinye zizinto ngokushesha kahle. Hlakula lokhu: izibhambo zemikro kubhekwa xa izinto zihluka ngokushisa, ukuvutha kubhekwa ngokugcina kwezinye izindawo apho izilayi zihambisana nezinye izilayi, nokulandela kwezinkumbulo kubhekwa ngokugcina kwe-UV ngokuphelele nokushisa. Xa abaphanyezeli bafunda ukuthi izilayi zabo zihamba kahle ngokuphatha lezi zinto, kunezindlela zokusebenza ezibalulekile. Izinkampani zihlala kude kabusha ngaphambi kokufuneka zibuyiselwe, amashopu ayasebenza amancane kakhulu ekususelweni kwezinto, nokuhlukunyezwa okungavakalanga kuhlanganisa kakhulu. Lokhu kubalulekile kakhulu kuzo zonke izindustria zokuphatha amandla, amaplane e-ayiriplene, nezindawo ezingabi ngezinkampani ezingaphezulu. Kulezi zindawo, ukuphela kwezilayi akasibonakali kuphela kodwa kwenza izinkinga zokuphila ezibalulekile futhi kususa ukusebenza kwezinhlelo ngokuphela kahle ngosuku ngosuku.