Yintoni ipayipi efakwe i-ptfe | BESTEFLON

Kwiminyaka yakutshanje, i-polytetrafluoroethylene (Teflon) luhlobo lweemveliso ezichasene nokungcoliswa kunye nokungangcoliswa kumashishini ombane kunye neekhemikhali. Nangona kunjalo, ezi ngxaki zilandelayo kufuneka ziqwalaselwe ngokukodwa xaI-PTFE ifakwe uludweumbhobhoIntambo idityanisiwe, kungenjalo ubomi benkonzo kunye nokhuseleko lombhobho ofakwe kwi-PTFE luya kuchaphazeleka.

1. Xa ucoca isixhobo sokudibanisa, akuvumelekanga ngokupheleleyo ukonakalisa isinyithi esisisiseko. Akuvumelekanga ukubetha i-arc kwisinyithi esisisiseko ngexesha lokuwelda.

2. Kwinxalenye ye-fillet ye-fillet weld, ukuphakama kwe-fillet weld kufuneka kube ngaphezu kwe-5mm, i-engile yeprojektha kufuneka ibe ngaphezulu okanye ilingane ne-3mm, kwaye i-engile yangaphakathi kufuneka ibe ngaphezulu okanye ilingane ne-10mm.

3. Xa kudityaniswa iqokobhe lombhobho ofakwe i-PTFE, kungcono ukusebenzisa indlela yokudityaniswa kwe-welding ye-butt welding enamacala amabini. Oku kufuna inqanaba lobuchwephesha labasebenzi bethu, i-weld kufuneka ibe tyaba (itshintshe ngokutyibilikayo okanye ngokugudileyo), kungabikho mingxunya, umthungo wokudityaniswa kwe-welding kunye ne-slag, kwaye ukuphakama kwe-weld akufanele kube ngaphezu kwe-2mm. Emva kokudityaniswa, ukusasazeka okubangelwa kukudityaniswa kwe-welding kufuneka kususwe ngokupheleleyo.

4. Kufuneka kusetyenziswe ukuwelda okuqhubekayo ekuwelda kombhobho ofakwe kwi-PTFE, kwaye umthungo wokuwelda akufuneki ube nemingxunya okanye ukusika okuqhubekekayo. Uphendlo oluNxulumeneyo:ipayipi ye-PTFE ephothiweyo, Umbhobho odibeneyo we-PTFE

I-Polytetrafluoroethylene (PTFE) yenye yamagama asetyenziswa kakhulu kwi-polytetrafluoroethylene. I-PTFE hose isetyenziswa kwi-stainless steel hose, ngoko ke ubomi be-hose bude kakhulu kune-raber hose okanye i-raber hose egqunywe nge-stainless steel. Inezibonelelo ezininzi kuneemveliso zerabha.

Iklasi yoku-1: Imibhobho ethe tye kunye nezixhobo zepayipi ezifakwe kwi-PTFE

Ngokuqhelekileyo yaziwa ngokuba yipayipi ye-liner ekhululekileyo. Kule nkqubo, i-PTFE isetyenziselwa ukujika i-bar. Ifanelekile kwipayipi yothutho oluqhelekileyo kunye nepayipi yothutho olunexinzelelo (njengepayipi ezintathu zokucoca inkunkuma, njl.njl.), kwaye akufuneki isetyenziswe kwipayipi enomthwalo (njengokungena kunye nokuphuma kwepompo kunye nepayipi enokuvelisa uxinzelelo olubi ngokuwa okanye ukupholisa ngequbuliso).

Inkcazo yobubanzi: dn25-500mm

Ubushushu benkonzo: - 40-180oc

Uxinzelelo lwenkonzo: 1.6Mpa

Iklasi yesiBini: Imibhobho ethe tye kunye nezixhobo zepayipi zePTFE ezixineneyo

Yaziwa kakhulu ngokuba yipayipi eqinileyo egqunywe ngocingo lwentsimbi.

Inkqubo yokuvelisa: okokuqala, iileya ezininzi zefilimu ye-PTFE zibotshelelwe kwisikhunta, emva koko ucingo lwentsimbi (Ø 0.5-1mm) lubotshelelwe kwifilimu ye-PTFE, emva koko iileya ezininzi zefilimu ebhityileyo ye-PTFE zibotshelelwe ngaphandle kocingo lwentsimbi, kwaye ekugqibeleni zisongelwe kwisithando somlilo ukuze zenziwe. Udonga lwangaphakathi lombhobho ofakwe i-PTFE owenziwe yile nkqubo lugudileyo, kwaye udonga lwangaphandle lubotshelelwe yi-spiral ngenxa yobuninzi kunye namandla e-elastic entambo yentsimbi.

Isithuba esiphakathi kodonga lwangaphandle lombhobho ofakwe i-PTFE kunye nodonga lwangaphakathi lombhobho wentsimbi sizaliswe yi-resin (ngaphandle komoya oshiyekileyo). I-resin yokuzalisa inokubotshelelwa ngokuqinileyo kumbhobho wentsimbi. Kwangaxeshanye, inokusongelwa ngokuqinileyo eludongeni lwangaphandle lombhobho we-PTFE ojikelezayo. Emva kokulungiswa kwe-resin ezaliswe ngokupheleleyo, kuyenziwa i-spiral ripple evalwe yi-ripple yodonga lwangaphandle lombhobho. Olu lwakhiwo lufana nokudibanisa i-nut kunye ne-bolt. Kwelinye icala, lunokunciphisa ngempumelelo kwaye lubuyisele ulwandiso lobushushu kunye nokuxinana okubandayo kombhobho we-PTFE; kwelinye icala, ukuqina kwentambo yentsimbi kunokuphucula kakhulu ukumelana noxinzelelo olubi lombhobho we-PTFE.

Inkcazo yobubanzi: dn25-200 mm

Ubushushu bokusebenza: - 50-180oc

Uxinzelelo olusebenzayo: 0.5-1.6mpa

Uhlobo lwesithathu: Umbhobho wokutyhala we-PTFE ogqunywe ngokuqinileyo ngombhobho othe tye

Eyaziwa ngokuba yipayipi ethe tye efakwe umgca wokutyhala (ukucinezela), isetyenziswa kakhulu kumazwe aphuhlileyo ngeminyaka yoo-1990.

Inkqubo yokuvelisa: okokuqala, umgubo we-PTFE ongenisiweyo usetyenziselwa ukutyhala (ukukhupha) umbhobho, uze emva koko unyanzelwe ungene kumbhobho wentsimbi engenamthungo (ububanzi bangaphandle bombhobho bukhulu kancinci kunobubanzi bangaphakathi bombhobho wentsimbi nge-1.5-2mm) ukuze kwenziwe umgca oqinileyo ongenamthungo. Ukuze kususwe uxinzelelo, ufakwa kwisithando somlilo kwaye ufudunyezwe ukuya kwi-180oC ukuze kulungiswe ubushushu obungaguqukiyo, ukuze usetyenziswe kubushushu obungaphantsi kwe-180oC. Kwangaxeshanye, tyhala (cinezela) umngxuma wombhobho.

Amandla okutsalwa angcono ngokucacileyo kunalawo etyhubhu yenxeba. Umbhobho unokumelana okufanelekileyo kuxinzelelo oluhle nolubi.

Umahluko phakathi kwe-PTFE lining kunye ne-raber lining

I-lining tetrafluoroethylene isetyenziswa kukumelana nokugqwala kwe-fluorine, ukumelana nobushushu obuphezulu, ukumelana ne-asidi enamandla kunye ne-alkali, ukunamathela okuhle kakhulu, ubomi obude benkonzo kunye nokumelana okunamandla kokungena. I-tetrafluoroethylene yonke yokutshiza ngumsebenzi wobuchwepheshe obuphezulu, ithini indlela esebenza ngayo? 1. Ngaphambi kokutshiza, umphezulu kufuneka utyunyuzwe kwaye ucolwe, kwaye kutshizwe umaleko we-primer ekhethekileyo. 2. Emva koko umgubo we-fluoroplastic utshajwa ngezixhobo ze-electrostatic eziphezulu, kwaye ufakwe ngokulinganayo kumphezulu we-workpiece phantsi kwesenzo se-electric field. 3. Emva kokubhaka kubushushu obuphezulu, amasuntswana e-clinker aya kunyibilika abe ngumaleko okhuselekileyo oxineneyo, onamathele ngokuqinileyo kumphezulu we-workpiece. Umzekelo, ifilimu yokugquma enobukhulu obuyi-1 mm nayo kufuneka itshizwe kwaye ibhakwe ngokuphindaphindiweyo amaxesha ama-5-6. Ngokubanzi, ubukhulu obukhulu bunokutshizwa ukuya kwi-2mm. I-PTFE lining bubuchwepheshe obusetyenziswa kakhulu okwangoku. Isebenzisa ngokupheleleyo ukumelana nokugqwala kwe-fluorine, ubunyulu obuphezulu, ucoceko, ukunganamatheli, ukungamanzi, ukuzithambisa, ukumelana nokuguguleka, ukumelana nobushushu obuphezulu nobuphantsi, ukugquma, njl. kwinkqubo yokwakha, i-voltage yayo kunye nomsinga zihlala zihlengahlengiswa kwimeko efanelekileyo ukuze kufezekiswe isiphumo sokugquma. I-lining yerabha ikwabizwa ngokuba yi-lining yerabha. Kukuncamathisela ipleyiti yerabha ecutshungulweyo kumphezulu wesinyithi nge-glue ukuze yahlule i-medium egqwalisayo kwi-matrix yesinyithi ngenjongo yokukhusela. Irabha yendalo kunye nerabha yokwenziwa zisetyenziselwa i-lining. Uninzi lwerabha esetyenziswa kwi-lining yezixhobo zeekhemikhali yirabha yendalo. Icandelo eliphambili lerabha yendalo yi-cis polymer ye-isoprene, evulcanized ngokongeza i-sulfur. Irabha evulcanized inokumelana nobushushu kunye namandla oomatshini. Ingahlulwa ibe yirabha ethambileyo, irabha elukhuni kunye nerabha eqinileyo iintlobo ezintathu. Irabha eqinileyo inokumelana nokugqwala okuhle, ukumelana nokuguga kunye namandla okubopha aqinileyo ngesinyithi. Irabha ethambileyo inokumelana nokubanda okuhle, ukumelana nobushushu kunye nokumelana nempembelelo, kwaye inokuqina okuthile; irabha eqinileyo iphakathi kwezimbini. Ukongeza kwii-oxidants ezinamandla kunye nezinye izinyibilikisi, irabha eqinileyo inokumelana nokugqwala kwee-asidi ezininzi ezingaphiliyo, ii-asidi ze-organic, ii-alkalis, iityuwa kunye nee-alcohols. Ke ngoko, i-lining yerabha eqinileyo isetyenziswa njengesixhobo esiphambili sokulwa nokugqwala esingeyiyo intsimbi. Irabha ye-Vulcanized inokwahlulwa ibe yirabha yangaphambili evulcanized, irabha yamanzi ashushu aqhelekileyo kunye nerabha yendalo evulcanized. Irabha yangaphambili evulcanized isetyenziswa kwizixhobo ezinkulu zokucoca.