Ukuphatha Kwamandla Okugcina Kwe-Skirtboard Yokugcina Urethane

Yini okuchaza ukuthi ishilingi sikhuluma ngokuphelele kwe-urethane conveyor skirtboard sealing?

Izinyathelo ezintathu: ukubhekana kwezinkinga zokugcina okuphelele, ukungabikwa kwemithombo yonke, nokuphelele kwezinkinga zokugcina phakathi kwe-conveyor belt ne-skirtboard

Ukufumana ukugcina okuphelele ngokuhle nge-skinboards zemibala yesilicone kubhekana nezinto ezintathu eziphakeme eziyisisekelo. Okokuqala kukuthi kufanele kubhekwe ukuthi kunezimboni zokuphakama ezifanayo kusayithi yokugcina. Sizihlola ngokujwayelekile ukuthi kunezimboni zokuphakama zezigaba ezingu-15 ku-20 psi lapha ngoba lokhu kuvikela ukuthi amandla ayebheke phakathi, futhi kunciphisa ukuthi kubhekwa kwezinye izinkampani ezinokuthi zihlabe izinkampani zokugcina ngokushesha. Okwesibili kuzo zizinye izikhala zokuhlaba phakathi kwamaphakathi. Uma sibeka lezi zikhala zingaphezu kwe-millimeter yekhulu, kuvikela ukuthi amasonto amancane ashiyelekele kuleli khala. Futhi ngicabanga ukuthi, uma amasonto amancane ashiyelekele, abhula izinkampani zesi-silicone futhi bazimelela ukuthi izinkampani ziyiphiwe ngokukhawuleza. Okwesithathu kukuthi isistimu kufanele ikwazi ukusebenza ngokushesha nokubambeka kwezimbali noma ukuchitha ngokushesha ngaphandle kokuthi ithole ukuthi iphumelela. I-polyurethane inobunzima obuhle okuthi ibuyela emuva emva kokuthi kubhekwa, ibuyela emuva kwezingu-90% yendawo yayo yokuqala nakuba kubhekwa ngokushesha ngokushesha. Uma sibandakanya lezi zinto zonke, sizifumana nini? Ukuthi amandla ayebheke phakathi ayenza ukuthi apho kubhekwa kwezindawo zingaphansi kwe-60% ku-75%, futhi lezi zinkampani ziyiphila ngokushesha kwezimbili noma kwezintathu kulokho okubhekwa ngokujwayelekile ngamaphakathi esilicone ekusebenzeni kwezindawo zokusebenza kwezinto ezingaphezu kwezibini.

Kungani iziphakamiso zemithambo yase-urethane—ukuphakama kwe-tensile, ukubusa, nokubuyela emuva—zihlolweni ngqo ukudlula kwemithambo (izilinganiso ze-ASTM D412/D2240)

Isithembiso esihlukile sokwakha kwe-urethane sibiza iziphumo eziningi kusukela kubandla lokugcina emva kokuphakamisa kulinganiswe nezinhlobo zemithubi yezinye. Kusukela kumkhawulo, i-urethane iyafikile ku-ASTM D412 ngokuphakama kwemithubi kude kwe-4000 psi, ngakho kunakho ukuzibophelela kwezinhlobo ezingaphezulu noma kungabonakali ukuthi kuchaphazeka. Kusukela kumkhawulo wokufana, kuyiscorepha phakathi kwe-400 ne-600% kwenqolobane ya-ASTM D2240, okusho ukuthi kufana ngokumangalisayo ngezilinganiso zokuguqula kwezindawo zokuguqula kwebelt ngaphandle kokuvaleka kwemithubi. Okunamathuba kakhulu kanti ngu-ability yakho yokubuyela emuva kokuphakamisa. Ngokulandela iziphumo zokuzilonda kwe-ASTM D2632, i-urethane ina-40% yokubuyela emuva kokuphakamisa. Lokhu kubalulekile ngoba izinhlobo ezingaphezu kwe-35% ziyagula kabili kusukela kwezindawo zokuhambisa kakhulu lapho izibhamu ziyagqoka ngokuphakeme kakhulu. Zonke lezi zinhlobo zihlanganisa ngokwesayensi. Ukuphakama okukhulu kuyabuyisa isikhundla esifanayo kusuka kwezinye izinyathelo, okuyasiza ekugcineni iphutha nezinhlobo zezinto ezingavumelekileyo futhi ukunciphisa ukugula okwenza ukuthi kugqogqwa ngokuphakeme kusukela kwezinye izinyathelo.

Izinkomba Zokusebenza Nezinkomba Zokusebenzisa Ezihlukile Kukhona Ukuthi Zihlukise Intuthu Yomkhakha Wemibala Yokuqala

Ukuphefumula Kwemibala, Ukungafani, Nokunyuswa Kwesikhala: Siziphi Kuzo Zizindlela Zokuthi Zihlukise Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Ukuthi Kukhona Uk......

Xa izihluzi zisikhala, ziyahlela ukuthi iphressha isebenzise kanjani kusuka kumsebenzi wokubeka iphressha ngaphansi kwesihluzi sokugcina esikhathini sokugcina, kubeka isikhathi sobukhulu sesiphelo esikhathini sokugcina ngokungafanele, kungakhathalela ukuthi kuyasebenza kangakanani phakathi. Kufanele kubhekwe njani? Lokhu kucacisa ukuthi kuyakwakha ukuchitha kulezi zindawo eziphezulu kwezinhlobo zezinto ezizimele, okunciphisa kancane ukuchitha ngokuphelele ngokulingana nesimo esinormali. Kube nesilinganiso esingasemthethweni esibiza ukuthi kuyabuyisa isihluzi sokugcina ngokushona, kubonakalisa ukuchitha okungafanele okubonakaliswa yizindlu zokuhlanzela xa zihlanzela. Lokhu kuyasebenza kanye xa izinkampani zokuthola ziyagcina ngaphezu kwe-35 digiri. Ngalezi ndawo, izikhumba ziyadlula phakathi kwezihluzi zokuthola kubonakalisa ukuthi izinto ziyadlula. Isikhathi sobude sengqondo sengqondo singasho ngokulingana ne-18 percent yedusti eyodlula kusukela kusistimu futhi iyachitha lezi zindawo zokuphela kancane. Zonke lezi zinkinga ziyagcinwa kuzo zonke ziyakubangela ukungafanele kwezintsha ngoba iphressha ayisebenzi ngokulingana, izilungu ziyadlula, nokuthi izinto zokuvimba ziyachitha kancane kulezi zindawo apho ukuthakazelwa kuyakhala ngokuphelele.

Ukwenza Kwemithambo Yokuqondisa Ne-ukuthintwa Kwemithambo Emihlwanilweni: Izizindlela Zokugcina Ukuthintwa Kwemithambo Yokuqondisa Yasezulwini Ne-ukungafanele Kwezikhumba

Izinto ezibonakalayo zivame ukubambeka phakathi kwamabhande okuhambisa izinto namabhodi okuhamba, kwakheke izindawo ezixhuma lapho zibambeka khona emilonyeni ye-urethane lapho isimiso sisebenza. Lapho lokhu kwenzeka, amandla okusika akhiqizwayo ngokuvamile aqinile kunalokho i-polymer engakwazi ukukuphatha, okuvame ukusuka ku-1500 kuya ku-4000 psi. Lokhu kuholela ekwakhekeni kwezingcezu ezincane zengxenye. Izinhlayiya ezihle ezifakwe kule ngxube, ikakhulukazi eziqinile ezifana nesilika noma insimbi, zingena phezu komhlaba ngokuhamba kwesikhathi. Lapho ibhande lishukunyiswa, la masosha agubha umlomo, kancane kancane alimaze nakakhulu kuze kube yilapho ekugcineni umlomo wonke ushabalala ngokuphelele. Uma sekukhona ngisho igebe elincane ngenxa yokugqoka okuvamile, izinto eziningi ziba sezingeni elingaphakathi, okwenza inkinga ibe yimbi nakakhulu ngokuhamba kwesikhathi. Uma ingasetshenziswa, yonke le nqubo yokubanjwa nokuqhekeka inganciphisa ngokuphawulekayo ukuphila kwezimpawu, ngezinye izikhathi zifinyeze cishe izingxenye ezimbili kwezintathu uma kuqhathaniswa nemishini egcinwe kahle. Ukuze kugwenywe zonke lezi zinkinga, abakhiqizi baye basungula izindlela eziningana. Abanye basebenzisa amabhodi amahle kakhulu okuqondisa izinto endaweni yokuzivumela ukuba zakheke. Abanye bakha izinto ze-urethane ezinamakhono aphakeme okuphindela emuva (ngokuvamile angaphezu kuka-50%) eziklanyelwe ngokukhethekile ukugcina lezo zinhlayiya ezicasulayo zingangeni.

Ukuphila Kwempilo Kwe-Urethane KuMizimba Yokuqondisa Okuthile Emizimbeni Yokugcina Okunzima

Ukuthabatha Kwemithwalo Kuzona Zonke Zokugcina Kwezinkulungwane Zokubamba Amasosha Nokugcina Kwemithwalo Yezinkulungwane

Kodwa kufuna ukubhala izinhlangano zokuhambisa okusebenzisa izinto ezinzima njengekholi nezinto eziphakathi, izikhumba zesilika zokuhambisa zihlola izikhumba zokuhambisa zezinkabi ngokuphelele ngamashumi amathathu kusukela ku-5 kusukela kwezinkabi zokuhambisa ngokubhekisele kwezinkabi zokuhambisa. Isakhiwo sesipolimha esihlukile sibona ukuthi isikhumba sibonakala ngenkabi yamaphakade eminye imithwalo, futhi lapho izinto zihambisa kusukela ku-15 meters per second. Kumaqondiswano okusebenza ngamaphakade kwezinto ezinamakhanda amaningi, sizibona izikhumba zesilika zibonakala ngenkabi engaphezulu kwezinkabi zemilimita ezimbili emva kokusebenza ngokuphelele ngamahora angu-10,000. Lokhu kuyisibonelo sokubhekisana ngokuphelele nokuthi izinkabi zokuhambisa zibonakala ngokuphelele ngokushesha kunezinkabi zokuhambisa zezinkabi zokuhambisa kuzo zonke izimo ezifanayo. Lokhu kuyisibonelo sokuthi isikhumba sikhula ngokulingana kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi zokuhambisa kwezinkabi......

Ukupheleka kwezinkinga zokugcina nokuzimela: izindlela zokusebenza ngaphansi kwemilinganu yepH, amanzi, nezintemperatya zomhlabathi

I-urethane isebenza kahle ngezinkunkuma zemithi ezingenabutho ezinamandla okubeka emphakathini, okuyisibonelo esihamba phakathi kwe-pH 8 kuya ku-10, futhi inakha ukubona amanzi angaphezu kwalokho ngaphandle kokukhanya njengamanye imithi. Kodwa khumbula ukubuka ukubuka kwezinkunkuma ezingenabutho kakhulu ezinamandla okubeka emphakathini ezihlukene kwe-pH 3 noma lezi zinkunkuma zokufaka izinkunkuma zezinhlobo zezinkunkuma zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo zezinhlobo z......

Ukuhlela Imithambo Yokugcina Kwesikhumba Ukuze Kuthole Isibonelo Esiphakeme Sekhambi le-Urethane

Amaphetha we-Canoe ne-amaphetha okusebenza: ukubambisana kwemisebenzi ngezikhumba zekhambi le-urethane ukuze kuncishwe industri yezindawo ezingavumelekile ngama-60–75% (imboni yomzekelo)

Ukuthola isiphumo esihle kakhulu kwe-skwitibhothi yokuqinisa yase-urethane kusukela kumathuba akhona kubalulekile ukusebenzisa lezi ziqinisekiso ngokuhambisana nezinye izinqakamba njengezinqakamba zokufaka emanzini (canoe liners) nezinqakamba zokugcina (wear liners). Lezi ziqinisekiso ezinkulu zizoba nendawo eyodwa ekupheleni kwazo kwezinto ezingaphansi, ngakho-ke iskwitibhothi yase-urethane siyakwazi ukuzinikela kuphela ukuchaza ukuthi isibandla sikhuluma ngokuphelele nesibandla esishiyayo. Sibona ukuthi kukhona indima yezinqakamba ezihambisana ukuze zizimele amaqhina amancane ukusuka kusuka, zihlukanise amandla okuphakanyiswa awaye kusukela kwindawo apho iskwitibhothi iyahambisana nesibandla, futhi zilindele lezi zinqakamba ukungabuka ngokunjalo okuyisithembiso sokuthi iskwitibhothi siyahlala iphakade. Ngokubhekana nomsebenzi wamagugu amaningi, umzekelo, abadala ubushushu obukhona emkhosini ngaphezu kwe-60% ku-75% emva kokwenza lokhu kubuso. Uma amandla okuphakanyiswa ayashicelwa kulezi zinqakamba ozokubuyisela, iziqinisekiso zase-urethane zihlala ngokwesikhathi eside kakhulu ngokwesilinganiso. Sibonile ukuthi isikhathi sokusebenza sibuyela kabili noma kabusha kakhulu emisebenzini yokuhambisa amacolo apho kubhala amaqhina amaningi. Konke lokhu kuthiwa ukuthi ubuciko bokubaluleka kwe-urethane nokubuyela emuva kakhulu kuyasihlanganisa emfanekiseni yeziphumo zokujabula ngokujabula ubushushu ngaphandle kokuthinteka kokuthi isibandla sikhuluma kanjani ngendlela yayo.

Imibuzo Evame Ukubuzwa

Izinqubo zokusebenza kwe-urethane ngaphezulu kwe-rubber ekufakweni kweskhuthu?

I-urethane iyisikhundla esingakanani emizimbeni eyinkimbinkimbi, inemitha yokuqondisa enkulu, futhi inamandla okuchitha okwanele, okubangela ukuthi isikhundla senze kude kune-rubber ekufakweni kweskhuthu.

U-urethane usebenza njani ngezilinganiso zokuchitha?

I-urethane isikhundla esisodwa phakathi kwe-40°C futhi 80°C, okuyisikhundla esisebenza kahle emizimbeni yezilinganiso zokuchitha, nokho izimo ezingakanani zinokuhambisana nesikhundla sakho.

Izinkinga zokusebenza eziphikisana nesikhundla seskhuthu se-urethane?

Izinkinga eziphikisana ziyizindlela zokusebenza zokuphuma kwezibalo, ukungafani kwezibalo, nokungafani kwezilinganiso zokuzama, okunokubangela ukuthi ubukhulu bakho baphakanyiswa ngokungafani futhi ukuthi ubukhulu bakho buphakanyiswa kakhulu.