Ptfe yenye yeentlobo zeplastiki fluorine, esetyenziselwa ukusetyenzwa kunye nokufakwa umaleko, ngenxa ptfe kwindawo yokunyibilika 327 ℃, kwaye ingaphezulu kwenqanaba lokunyibilika 360 ℃ usebenzisa disposable push extrusion sintering iindlela zokubumba, inkqubo inzima ngakumbi, inkqubo ulawulo lwekhwalithi lubandakanya izinto ezininzi, xa ulawulo alulunganga, lunokwenza inkqubo yokukhupha okanye ivele zonke iintlobo zengxaki yomgangatho;Emva kokuba i-extrusion kunye ne-sintering ayiphumelelanga, iya kubangela inxalenye yempahla okanye yonke i-scrap, ixabiso le-ptfe liyabiza, ngoko kubangele inkunkuma enkulu.
Ptfe yenye yeentlobo zeplastiki fluorine, esetyenziselwa ukusetyenzwa kunye nokufakwa umaleko, ngenxa ptfe kwindawo yokunyibilika 327 ℃, kwaye ingaphezulu kwenqanaba lokunyibilika 360 ℃ usebenzisa disposable push extrusion sintering iindlela zokubumba, inkqubo inzima ngakumbi, inkqubo ulawulo lwekhwalithi lubandakanya izinto ezininzi, xa ulawulo alulunganga, lunokwenza inkqubo yokukhupha okanye ivele zonke iintlobo zengxaki yomgangatho;Emva kokuba i-extrusion kunye ne-sintering ayiphumelelanga, iya kubangela inxalenye yempahla okanye yonke i-scrap, ixabiso le-ptfe liyabiza, ngoko kubangele inkunkuma enkulu.Ngoko ke, kuyimfuneko ukulawula inkqubo ye-extrusion ye-ptfe ngokufanelekileyo, ngokubanzi kwaye ngokufanelekileyo, okuyimeko eyimfuneko yokuqinisekisa umgangatho wemveliso kunye nokunciphisa inkunkuma.
Ngokusekelwe kwisicelo kunye nokusetyenzwa kwezixhobo ze-ptfe kwiingcingo zombane kunye neentambo kunye namava asebenzayo, iphepha linika inkcazo emfutshane yenkqubo ye-ptfe yokufakelwa kwe-extrusion, ngethemba lokunceda amagcisa emveliso ukwenza ukhetho oluchanekileyo kunye nolawulo kwinkqubo ye-ptfe extrusion.
Inkqubo yetekhnoloji:
1. I-Sieve F4 powder
I-Ptfe powder ngamasuntswana omgubo emva kokwenziwa kwepolymerization, ithambile, amandla mancinci kakhulu, xa ikwisikhongozeli sokupakisha igcinwe ngokulula ngobunzima okanye isiphithiphithi sokungcangcazela kwindlela yokuhamba kwiqela, ukudibanisa isenzeko esingalinganiyo, ke phambi kokuxubana kufuneka kwamkele iinkcukacha ezithile zesefu semesh. ye ptfe powder, hluza iqhina elikhulu lokupheka imathiriyeli yesitatshi, iinkcukacha zekhusi lomnatha ku-8 no-12 we-mesh uyacetyiswa.Ukuba i-agglomeration inzulu, i-powder kufuneka ifakwe kwiqondo lokushisa eliphantsi, emva kwexesha elithile, ukuba i-agglomeration ibonisa iimpawu zokukhulula, ngoko ukuhlolwa.Umgubo kufuneka ugcinwe kwindawo yobushushu obuphantsi, kwaye kufuneka uphathwe ngobunono kwinkqubo yokuphatha, ukuze ugweme i-agglomeration enzima ye-ptfe powder kwaye ayinakusetyenziswa.Ukongeza, ukucoceka kokusingqongileyo kufuneka kuqinisekiswe kwaye ukungcola okanye uthuli akufanele luxutywe kwi-ptfe powder.Ngenxa ye-electrostatic adsorption eyomeleleyo ye-ptfe powder, kulula ukubhengeza umoya okanye ukungcola okuncinci kunye nothuli ngeenxa zonke, ukuze ugcine indawo engqongileyo icocekile ngaphandle kothuli, umphezulu wesikhongozeli sokupakisha kufuneka ucoceke phambi kokuvula isigqubuthelo.
2. I-Toner okanye unyango lwe-pulp
Xa i-insulation ifuna umbala ukuchongwa, inxalenye ethile ye-toner okanye i-slurry kufuneka ifakwe kwi-ptfe powder.I-Toner isemva kokugaya ubushushu obuphezulu obunganyangekiyo kwi-organic okanye ye-pigment powder, kulula ukufunxa ukufuma, i-agglomeration, ngoko ke kufuneka unyango olushushu kwangaphambili, lususe ukufuma, kunye nekhusi, luhluze amasuntswana amakhulu.Ngokubanzi, i-180 kunye ne-200 ye-mesh yeskrini yenkcazo ifanelekile.Ukuba isikrini sesikrini sincinci kune-180 mesh, ngoko ke amasuntswana e-pigment emva kokucoca makhulu, angahambi kakuhle ekusebenzeni kwe-insulation layer.Umnatha wesikrini ungaphezulu kwe-200 mesh.Nangona ukusebenza kwe-insulation layer kuqinisekisiwe, kunzima ukuhluza.Intlama yombala ngumxube we-toner kunye nolwelo olunamafutha, i-toner kwimeko yokumiswa kolwelo olunamafutha, kodwa imile kangangexesha elithile iya kudlula, ngoko ke phambi kokusetyenziswa kufuneka ishukunyiswe kwaye ixutywe, ukuze amasuntswana etoner amiswe ngokulinganayo kulwelo olunamafutha ukuze asetyenziswe. .
3. Izithako
Ukudibanisa kuyilungiselelo elibalulekileyo ngaphambi kokuxuba, ngokomlinganiselo we-polytetrafluoroethylene powder kunye ne-extrusion aid, okanye i-powder yombala okanye i-paste yombala ilungile, emva komxube.
Kukho iintlobo ezininzii-extruder, ezifana ne-yan 20 i-petroli ye-aviation, i-toluene, i-ether ye-petroleum, okanye enye i-oyile ye-solvent eguqukayo, i-solvent ye-organic, njl., isantya esahlukileyo se-extruder volatilization siyahluka, ngokwemeko yokwenyani yesixhobo, isantya se-extrusion ukukhetha i-extruder efanelekileyo.Umncedisi we-extrusion uvuthuza ngokukhawuleza, nangona unokunciphisa ixesha lokumisa kunye nokuphucula isantya se-extrusion, kufuna ixesha elingqongqo lomsebenzi wokulungiselela ngaphambi kokukhutshwa, kwaye ixesha lokusebenza lokulungiselela akufanele libe lide kakhulu, ngaphandle koko umncedisi we-extrusion we-blank uya kungasebenzi ngenxa yokuguquguquka okugqithisileyo .I-Extruder icotha kakhulu ukuba ibe ngumphunga, kwaye nangona kunokubakho ixesha elaneleyo lokulungiselela, ixesha lokumisa kufuneka landiswe okanye iimfuno eziphezulu zomthamo wesixhobo ziyafuneka.Umyinge we-extruder kufuneka ube yi-18% kunye ne-23%, kwaye kufuneka ihlengahlengiswe ngokweenkcukacha zomqhubi, ubukhulu be-insulation layer,i-extrusionisantya kunye noxinzelelo lwe-extrusion.Ngokuqhelekileyo, ukucaciswa kwecingo likhulu, ubukhulu be-insulation bukhulu, isantya se-extrusion sikhawuleza, ukunyanzeliswa kuncinci, umlinganiselo we-extruder unokuba mncinci ngokufanelekileyo;Ngokuchasene noko, ukucaciswa kocingo kuncinci, ubukhulu be-insulation buncinci, isantya se-extrusion siyacotha, ucinezelo likhulu, umlinganiselo we-extruder unokuba mkhulu ngokufanelekileyo.
Iitoni zibiza kancinci kwaye zisasetyenziswa nanamhlanje.Ukusebenzisa i-pigments ukudaya, i-PTFE insulation dispersion kwi-toner njenge-paste, i-toner kunye ne-ptfe powder ngumxube owomileyo, kunye nezongezo ze-toner kwaye zincinci, kulula ukubangela i-cluster yokuxuba, ukusasazeka akubi, akukho lula ukuxuba, kuya kukhokelela kubukho bechromatism. inxalenye eyahlukileyo yokugquma, ngoko ke ubukhulu bayo buncinci kangangoko xa ukhetha iimfuno ze-toner, umgangatho we-toner ongenisiweyo jikelele ungcono.Kumxube we-toner, kufuneka ukhethe ukunyamezelana kobushushu be-pigment ngaphezulu kwe-400 ℃, kungenjalo emva kokushisa okuphezulu kwe-sintering (ubushushu be-sintering ngokubanzi obusisiseko kwi-350, 400 ℃) kunokuvela isiganeko esiphelayo.Ngokubanzi, ii-pigments ze-inorganic ziyakwazi ukumelana nobushushu obuphezulu, ngelixa i-organic pigments inokumelana nobushushu obuphantsi.Ke ngoko, ukusetyenziswa kwee-pigments ze-inorganic njenge-toner kunokwethenjelwa ngakumbi, kodwa ukukhuselwa kwayo kokusingqongileyo kubi.Umlinganiselo wokulinganisa we-toner ngokuqhelekileyo awukho ngaphezu kwe-%, kwimveliso yangempela inokuhambelana nohlobo lwetoni, umgangatho wetoni, iimfuno zombala, ubukhulu be-insulation layer, njl.
Nangona ixabiso lokunamathisela umbala liphezulu, lihambelana nokufana komxube kwaye lukhetho olufanelekileyo, olunokuqinisekisa ngokufanelekileyo umgangatho wemveliso, ukusebenza okulula, ukusebenza okuphezulu kunye nokuchithwa okuncinci.Xa udibanisa umbala wokunamathisela, umbala wombala unokongezwa kwi-extrusion aid kunye ne-premixed ngokulinganayo.Ngenxa yobuninzi be-extruder, imanzi ixutywe ne-ptfe powder, ngoko akukho ngxaki ye-toner agglomeration, kwaye i-dispersion ilungile kakhulu, kulula ukuxuba ngokulinganayo.Umlinganiselo wokuncamathisela umbala ngokubanzi phakathi kwe-0.3% kunye ne-0.5 ‰, kunye no-3 ‰ ukuba uninzi.Kuphela iimeko ezimbalwa ezikhethekileyo zifuna umlinganiselo we-0.5 ‰.Xa i-insulation layer edge umaleko ubukhulu buncinci, umlinganiselo wombala we-paste kufuneka unyuswe ngokufanelekileyo nge-0.1%, 0.2.
4. Umxube
Ukuxuba kukudibanisa i-polytetrafluoroethylene powder kunye ne-extrusion aid, okanye umgubo wombala okanye unamathisele umbala ngokulinganayo, ukuqinisekisa ukuba i-extrusion insulation lubrication kunye nokufana kombala.Ukuze kuququzelelwe ukuxuba okufanayo, umthamo webhotile yokuxuba ngokubanzi (ibhotile yomlomo obanzi) ifanelekile kwi-4, 5 ilitha, umgangatho wokulayisha umalunga ne-800, 1 000 g, i-akhawunti yevolumu yokulayisha malunga ne-2/3 yebhotile yokuxuba. umthamo ulungile, ngoko kukho indawo eyaneleyo yokuxuba.
Umxube wombala wendalo (ikakhulu osetyenziselwa ukugqithisa i-insulation ye-cable frequency frequency) ayifuni ukongeza i-toner.Xa uxuba, faka umgubo we-ptfe kwibhotile yokuxuba kuqala.Isetyenziselwa ukwenza abantu bazame ukungaqhagamshelani nokuxuba ibhotile eludongeni lwebhotile, emntwini ukucudisa uncedo olufumanekayo isixhobo samaphepha acocekileyo siya kuxuba ngobunono ebhotileni kumbindi womphezulu we-ptfe umgubo ukuya eludongeni lwebhotile, wenze iziko lawo lomphezulu ukwenza ubunzulu malunga ne-2, 3 c ye-conical hole, ngoko abantu abasetyenziswe ngokuthe ngqo kumlinganiselo othile kumngxuma we-taper;Emva koko, ibhotile yokuxuba iya kugqunywa kwaye ivalwe ngokungqongqo ukukhusela i-extruder ukuba ingaguquki.Okokuqala, ibhotile yokuxuba iya kushukunyiswa kwaye ixutywe ngesandla ngokungekho ngaphantsi kwemizuzu emi-5, emva koko ibhotile yokuxuba iya kufakwa kumatshini wokuxuba ukuze ujike kwaye uqhube ngaphezu kwemizuzu engama-30 kude kube ukuxubana.
5. Compact
Isiphumo sokucinezela (izinto) i-billet kukucinezela i-porous porous polytetrafluoroethylene powder ibe yi-billet yezinto eziphathekayo, ukuphelisa ii-pores kunye nomoya oqulethwe kuyo ukuze kusetyenziswe i-extruding.Ngokubanzi kufuneka ibe kwindawo ye-20 ℃ ngaphezu kocinezelo olungenanto, iya kuba ngumgubo we-homogenized ngokucothayo ugalele kwi-cylinder cylinder yoxinzelelo, kwangaxeshanye kufuneka kuqinisekiswe ukuba intonga yentliziyo kunye noxinzelelo lwe-cylinder cylinder concentric, kwaye ngobunono ushukumise isilinda soxinzelelo kwi-cylinder. umphezulu wezinto eziphathekayo, kwaye emva koko wongeze isigqubuthelo soxinzelelo kuyo.Uxinzelelo kufuneka lufaneleke, lukhulu okanye luncinci luya kuchaphazela umgangatho we-extrusion.Ukuba uxinzelelo lwe-blank likhulu kakhulu, i-extruder ilula ukuba igxininiswe, kwaye ukusebenza kwe-lubrication ngexesha lokukhupha kuncitshisiwe, uxinzelelo lwe-extrusion luyanda, kwaye uxinzelelo lwe-shear lwempahla lukhulu, olukhokelela kwi-fibrosis egqithisileyo, ekhokelela kwi-fibrosis. ayihambelani nozinzo lwedayamitha yangaphandle ye-insulation extrusion, kunye nesantya sokuncipha kwe-insulation sintering inkulu, ekwalula ukubangela ukuqhekeka kwe-insulation.
6. Khama ngaphandle
Umsebenzi wokulungiselela i-ptfe insulation extrusion ikakhulu ibandakanya ukukhethwa komlinganiselo woxinzelelo, ukufudumeza kunye nokufudumeza kwe-cylinder extrusion kunye nokufa, ukulungiswa kwesithuba seenaliti phakathi komkhono wokufa kunye nombindi wokufa, ukutshaja okungenanto, ukuhlolwa komqhubi, ukugqobhoza umqhubi, ukulungiswa koxinzelelo lwentambo, ukutywinwa kwendibaniselwano. yentloko yomatshini kunye ne-extrusion cylinder, njl., eya kuqaliswa koku kulandelayo.
Umlinganiselo wokunyanzeliswa kweempawu ezahlukeneyo ze-ptfe powder ngexesha le-extrusion nalo lihlukile.umlinganiselo wokunyanzeliswa ofanelekileyo kufuneka unqunywe ngokweempawu ze-ptfe powder ukuqinisekisa ukusebenza kwenkqubo kunye nomgangatho ngexesha lokukhupha.I-Extrusion compression ratio ibhekisela kumlinganiselo phakathi kwendawo ye-annular ye-extrusion die kunye nommandla we-annular we-blank.Ngokuqhelekileyo, iisilinda ze-extruder zahlulwe zibe ngamasayizi amathathu: amancinci, aphakathi kunye amakhulu.Ububanzi be-cylinder encinci bu malunga ne-38 mm, i-cylinder ephakathi malunga ne-50 mm, kunye ne-cylinder enkulu malunga ne-65 mm. Kwimveliso yangempela, iinkcukacha ze-cylinder extruder kufuneka zikhethwe ngokwecandelo lecandelo le-extruder insulation layer.
Ukuze kugcinwe ukushisa okuzinzile kwe-blank kwaye kuququzelele i-volatilization ye-extruder emva kwe-extrusion, i-cylinder ye-extrusion kunye ne-mold kufuneka iqhutywe ngokufanelekileyo.Ubushushu be-preheating ye-cylinder ye-extrusion kufuneka bube yi-30 okanye i-40 ℃, kwaye iqondo lokushisa kwangaphambili lokungunda kufuneka libe yi-50 okanye i-60 ℃.
I-extrusion kufuneka ihambelane neenkcukacha zokubumba okuhambelanayo kunye nokuhambelana nendawo yendibano, kunye nomkhono wokubumba ophethe umgca wentamo yabantu kunye netyhubhu yenaliti phakathi komgama (umsantsa) kwindawo efanelekileyo.Ukukhutshwa okukhulu okanye okuncinci kakhulu kuya kuchaphazela umgangatho we-insulation layer.Ukuba i-gap incinci kakhulu, isantya sokukhutshwa kwempahla ye-ptfe ukuya ngaphandle kwesikhunta siya kukhawuleziswa, kwaye izinto ziya kunqunyulwa ngokugqithiseleyo, okukhokelela kwi-fibrosis egqithisileyo, okukhokelela ekunciphiseni kwamandla aguquguqukayo e-insulation layer, imveliso ithanda ukuqhekeka i-longitudinal okanye iintanda zangaphakathi zokugquma, kwaye ukugquma kunye nokugquma kwe-conductor akuqinile (kukho "ikhava ekhululekile"). Umsantsa mkhulu kakhulu, uya kwenza izinto ze-ptfe ukuya ngaphandle kwe-mold extrusion velocity icothe. , uxinzelelo lwezinto eziphathekayo kwi-conductor luyanda, luvame ukwenzeka ukungazinzi kwe-extrusion okanye kubangele i-conductor compression rolling kunye nokuvelisa "i-pine" ingxaki, kwaye umqhubi akakwazi ukudlula kwi-needle plug phenomenon.
Ixesha lokuthumela: Jan-01-2018