Ptfe ndeimwe yemhando dzefluorine epurasitiki, inoshandiswa kugadzirisa uye kuvharidzira layer, semhedzisiro yeptfe mukunyunguduka 327 ℃, uye yakakwirira kupfuura inonyungudika 360 ℃ uchishandisa disposable push extrusion sintering molding nzira, maitiro akanyanya kuoma, maitiro. kudzorwa kwehutano kunosanganisira zvinhu zvakawanda, kana kutonga kusina kunaka, kunogona kuita kuti extrusion muitiro kana kuoneka marudzi ose ehutano dambudziko;Kana iyo extrusion uye sintering isingabudiriri, inokonzeresa chikamu chenyama kana zvese zvimedu, mutengo weptfe unodhura, saka wakonzera marara makuru.
Ptfe ndeimwe yemhando dzefluorine epurasitiki, inoshandiswa kugadzirisa uye kuvharidzira layer, semhedzisiro yeptfe mukunyunguduka 327 ℃, uye yakakwirira kupfuura inonyungudika 360 ℃ uchishandisa disposable push extrusion sintering molding nzira, maitiro akanyanya kuoma, maitiro. kudzorwa kwehutano kunosanganisira zvinhu zvakawanda, kana kutonga kusina kunaka, kunogona kuita kuti extrusion muitiro kana kuoneka marudzi ose ehutano dambudziko;Kana iyo extrusion uye sintering isingabudiriri, inokonzeresa chikamu chenyama kana zvese zvimedu, mutengo weptfe unodhura, saka wakonzera marara makuru.Naizvozvo, zvinodikanwa kudzora iyo extrusion maitiro eptfe zvine musoro, zvakazara uye zvinobudirira, inova mamiriro anodiwa kuti ave nechokwadi chemhando yechigadzirwa uye kuderedza marara.
Zvichienderana nekushandisa uye kugadzirisa maitiro e ptfe zvinhu mumawaya emagetsi uye tambo uye chiitiko chinoshanda, bepa rinopa pfupiso ye ptfe insulation extrusion process, vachitarisira kubatsira magadzirirwo ekugadzira kuita sarudzo uye kutonga kwakaringana mu ptfe extrusion process.
Tekinoroji maitiro:
1. Sieve F4 upfu
Ptfe poda ndiyo zvidimbu zvehupfu mushure me polymerization, yakapfava, simba idiki kwazvo, kana iri mugaba rekurongedza rinochengetwa zviri nyore nehuremu kana turbulence vibration pakufamba musumbu, kusanganisa kusaenzana chiitiko, saka kusati kwasanganiswa kunofanirwa kutora mamwe maratidziro e mesh skrini kuti isefa. yeptfe poda, sefa yakakura knot yekubikira starch zvinhu, zvakatemwa zve mesh skrini mu8 uye 12 mesh zvinokurudzirwa.Kana iyo agglomeration yakakomba, hupfu hunofanira kuiswa munzvimbo yakadzika, mushure mechinguva, kana kuunganidza kunoratidza zviratidzo zvekusunungura, ipapo kuongorora.Iyo hupfu inofanira kuchengetwa munzvimbo yakadzika yekushisa, uye inofanira kubatwa zvinyoro-nyoro mukugadzirisa kwekubata, kuitira kuti udzivise agglomeration yakaoma ye ptfe powder uye haigoni kushandiswa.Mukuwedzera, hutsanana hwezvakatipoteredza hunofanira kuvimbiswa uye tsvina kana guruva hazvifaniri kusanganiswa mu ptfe powder.Nekuda kwesimba remagetsi adsorption yeptfe poda, zviri nyore kushambadza mweya kana tsvina diki neguruva zvakatenderedza, saka kuchengetedza nharaunda yakachena isina guruva, iyo yekurongedza yemudziyo yekurongedza inofanirwa kuve yakachena isati yavhura chivharo.
2. Toner kana pulp kurapwa
Kana insulation ichida kupendwa kwemavara ekuzivikanwa, imwe chikamu che toner kana slurry inofanira kuwedzerwa kune ptfe hupfu.Toner iri mushure mekukuya yakanakisa tembiricha inodzivirira organic kana inorganic pigment poda, iri nyore kutora hunyoro, agglomeration, saka pamberi panofanirwa kupiswa kurapwa, kubvisa hunyoro, uye skrini, kusefa kunze zvidimbu zvakakura.Kazhinji, 180 uye 200 mesh screen zvinyorwa zvakakodzera.Kana iyo skrini idiki pane 180 mesh, ipapo pigment zvimedu mushure mekusefa zvakakura, izvo zvisingaenderane nekuita kwekudzivirira kweiyo insulation layer.Iyo skrini mesh inopfuura 200 mesh.Kunyangwe iyo insulation performance ye insulation layer yakavimbiswa, zvakaoma kusefa.Ruvara paste musanganiswa we toner uye ine mafuta mvura, toner mune ine mafuta mvura yakamiswa, asi yakamira kwenguva yakati inonaya, saka isati yashandiswa inofanira kuzungunuswa uye kusanganiswa, kuitira kuti mvura inonaya ye toner inomiswa zvakaenzana mumvura ine mafuta kuti ishandiswe. .
3. Zvigadzirwa
Batching igadziriro yakakosha isati yasanganiswa, maererano nehuwandu hwepolytetrafluoroethylene powder uye extrusion aid, kana ruvara rwehupfu kana ruvara rwemavara rwakagadzirira, mushure mekusanganiswa.
Kune mamwe marudzi eextruder, zvakadai seyan 20 aviation peturu, toluene, petroleum ether, kana mamwe mafuta anonyungudutsa, organic solvent, nezvimwewo, zvakasiyana extruder volatilization speed yakasiyana, maererano nemamiriro chaiwo ezvigadzirwa, extrusion speed kusarudza extruder yakakodzera.Iyo extrusion mubatsiri inoputika nekukurumidza, kunyangwe ichigona kupfupisa nguva yekuomesa uye kugadzirisa iyo extrusion kumhanya, inoda yakasimba yekushanda nguva yekugadzirira isati yabuda, uye nguva yekugadzirira basa haifanirwe kunge yakareba, zvikasadaro mubatsiri weiyo blank. ive isingabatsiri nekuda kwekuwedzera kuvhuvhuta .Extruder inononoka kubuda, uye kunyangwe pangava nenguva yakakwana yekugadzirira, nguva yekuomesa inofanira kuwedzerwa kana kudiwa kwepamusoro kune simba rekushandisa rinodiwa.Chikamu che extruder chinofanirwa kunge chiri 18% uye 23%, uye chinofanirwa kugadziridzwa zvinoenderana nezvinodiwa zve conductor, insulation layer thickness,extrusionkumhanya uye extrusion pressure.Kazhinji, tambo yewaya yakakura, ukobvu hwekudzivirira hwakanyanya, iyo extrusion kumhanya inokurumidza, kudzvanya kuri kudiki, chikamu che extruder chinogona kuita chidiki zvakakodzera;Kusiyana neizvi, iyo tambo yakatarwa idiki, ukobvu hwekudzivirira hutete, kumhanya kwekuwedzera kunononoka, kudzvanywa kwakakura, chikamu cheiyo extruder chinogona kukura zvakafanira.
Toner inodhura zvishoma uye ichiri kushandiswa nhasi.Kushandisa pigment kudhayi, PTFE insulation dispersion mu toner se paste, toner uye ptfe powder yakaoma kusanganisa, uye toner additives uye zvishoma, zviri nyore kukonzera kusanganisa cluster, kupararira kune urombo, hakusi nyore kusanganisa, kunotungamirira kuhupenyu hwakakomba chromatism. chikamu chakasiyana chekuisa, saka saizi yayo idiki sezvinobvira pakusarudza toner zvinodiwa, general inotengeswa kunze kwenyika toner mhando iri nani.Mumusanganiswa we toner, unofanirwa kusarudza pigment poda tembiricha kushivirira pamusoro pe400 ℃, zvikasadaro mushure mekupisa tembiricha sintering (sintering tembiricha kazhinji yakakosha mu350, 400 ℃) inogona kuoneka chigadzirwa chiri kupera chiitiko.Kazhinji, inorganic pigments ine yakanaka-yepamusoro-tembiricha kuramba, nepo organic pigments ine hurombo hwepamusoro-tembiricha kuramba.Naizvozvo, kushandiswa kwe inorganic pigments se toner kunonyanya kuvimbika, asi kudzivirira kwayo kwezvakatipoteredza hakuna kunaka.Chiyero chekufananidza che toner kazhinji hachipfuure] %, mukugadzirwa chaiko kunogona kuenderana nerudzi rwe toner, mhando ye toner, mavara anodiwa, insulation layer ukobvu, nezvimwe.
Kunyange zvazvo mutengo wemuvara wepaste wakakwirira, unobatsira pakufanana kwemusanganiswa uye isarudzo yakanaka, iyo inogona kunyatsoita kuti zvive nechokwadi chehutano hwechigadzirwa, kushanda kwakapfava, kushanda kwepamusoro uye kushomeka kushoma.Paunenge uchisanganisa ruvara rwemavara, ruvara rwemavara runogona kuwedzerwa kune extrusion rubatsiro uye premixed zvakaenzana.Nekuda kwehuwandu hwakawanda hweextruder, yakanyorova yakasanganiswa neptfe powder, saka hapana dambudziko re toner agglomeration, uye kupararira kwakanaka kwazvo, zviri nyore kusanganisa zvakaenzana.Chikamu chemavara anonamira kazhinji chiri pakati pe0.3% uye 0.5 ‰, ne3 ‰ vari vazhinji.Chete mashoma anokosha nyaya dzinoda chikamu che 0.5 ‰.Apo iyo yekuvharidzira jira kumucheto ukobvu hutete, chiyero chemuvara namatidza chinofanira kuwedzerwa zvakakodzera ne 0.1%, 0.2.
4. Musanganiswa
Kusanganisa kusanganisa polytetrafluoroethylene poda ne extrusion aid, kana ruvara poda kana ruvara paste zvakaenzana, kuve nechokwadi chekuti extrusion insulation lubrication uye ruvara kufanana.Kuti ufambise kusanganisa yunifomu, huwandu hwebhodhoro rekusanganisa bhodhoro (rakafara remuromo bhodhoro) rakakodzera kusvika 4, 5 litres, mhando yekurodha ingangoita 800, 1 000 g, vhoriyamu yekurodha inosvika 2/3 yebhodhoro rekusanganisa. vhoriyamu yakanaka, saka pane nzvimbo yakakwana yekusanganisa.
Musanganiswa weruvara rwechisikigo (unonyanya kushandiswa kuburitsa iyo insulation yeredhiyo frequency tambo) haidi kuwedzera toner.Pakusanganisa, isa ptfe hupfu mubhodhoro rekusanganisa kutanga.Inoshandiswa mukuita kuti vanhu vaedze kusabatana nekuvhenganisa bhodhoro remadziro ebhodhoro, mumunhu kusvina rubatsiro runowanikwa rakachena shizha chishandiso chinosanganisa zvinyoro nyoro mubhodhoro pakati pepamusoro peptfe poda kumadziro ebhodhoro, ita nzvimbo yayo yepamusoro kuti iite kudzika kwe2, 3 c ye conical gomba, ipapo vanhu vanoshandiswa zvakananga mune imwe chikamu mugomba re taper;Mushure meizvi, bhodhoro rinosanganiswa richavharwa uye rakavharwa zvakasimba kudzivirira extruder kubva pakupisa.Chekutanga, bhodhoro rekusanganisa rinozununguswa uye rinosanganiswa nemaoko kweasingasviki maminetsi mashanu, uye ipapo bhodhoro rekusanganisa rinozoiswa pamushini wekusanganisa kuti uzununguke uye uumburuke kweanopfuura maminetsi makumi matatu kusvika kusanganiswa kwaita.
5. Compact
Mhedzisiro yekutsikirira (material) billet ndeyekudzvanya yakasununguka porous polytetrafluoroethylene poda muine compact material billet, kubvisa pores nemhepo irimo kuti ishandiswe extruding.Kazhinji inofanirwa kunge iri munzvimbo ye20 ℃ pamusoro pekudzvanya kusina chinhu, ichave homogenized poda zvishoma nezvishoma ichidira muhumburumbira humburumbira, panguva imwe chete inofanirwa kuve nechokwadi chekuti moyo tsvimbo nekumanikidza humburumbira cylinder concentric, uye zvinyoro zunza silinda yekumanikidza mukati. material surface, wobva wawedzera chivharo chekumanikidza pairi.Kumanikidza kunofanirwa kuve kwakakodzera, yakawandisa kana yakawandisa inokanganisa extrusion kunaka.Kana kudzvinyirirwa kwechinhu chisina chinhu chakanyanya kukura, iyo extruder iri nyore kudzvinyirirwa, uye iyo lubrication performance panguva ye extrusion inoderedzwa, iyo extrusion pressure inowedzera, uye shear stress yezvinyorwa yakakura, zvichitungamira kune yakawandisa fibrosis, inova. kwete kugadzirisa kugadzikana kwekunze kwedhayamita ye extrusion insulation, uye shrinkage rate ye insulation sintering yakakura, iyo iri nyorewo kukonzera kuputika kwekuputika.
6. Dzvinya kunze
Basa rekugadzirira ptfe insulation extrusion rinonyanya kusanganisira kusarudzwa kwe compression ratio, preheating uye kupisa kweextrusion cylinder uye kufa, kugadziriswa kwegap retsono pakati pefa sleeve uye die core, kuchaja isina chinhu, conductor inspection, conductor kubaya, kugadziriswa kwetambo tension, kusanganisa kuvharwa. yemuchina wemusoro uye extrusion cylinder, nezvimwe, izvo zvichaunzwa mune zvinotevera.
Iyo yekumanikidza reshiyo yemhando dzakasiyana dzeptfe poda panguva yeextrusion zvakare yakasiyana.iyo yakakodzera compression reshiyo inofanirwa kutariswa zvinoenderana nemidziyo yeptfe poda kuti ive nechokwadi chekuita kwemaitiro uye kunaka panguva yeextrusion.Extrusion compression ratio inoreva chiyero chiri pakati pe annular nharaunda ye extrusion die uye annular nzvimbo isina chinhu.Kazhinji, masimbi eextruder akakamurwa kuita matatu saizi: madiki, epakati uye makuru.Iyo dhayamita yediki cylinder inenge 38 mm, yepakati cylinder inenge 50 mm, uye cylinder yakakura inenge 65 mm. Muchigadzirwa chaicho, zvinyorwa zve extruder cylinder zvinofanira kusarudzwa maererano nechikamu chechikamu che extruder insulation layer.
Kuti uchengetedze tembiricha yakadzikama yechinhu chisina chinhu uye kufambisa kuvhuvhuta kweiyo extruder mushure mekuwedzera, iyo extrusion cylinder uye mold inofanira kunge yakanyatso kupiswa.Iyo preheating tembiricha yeextrusion cylinder inofanira kunge iri 30 kana 40 ℃, uye tembiricha yekupisa ye mold inofanira kunge iri 50 kana 60 ℃.
Iyo extrusion inofanirwa kuenderana neyakaomeswa yeinoenderana inoenderana mold uye zvinoenderana nenzvimbo yegungano, uye mold sleeve inotakura mutsara wemutsipa wehuwandu uye tsono chubhu pakati pechinhambwe (gap) kune yakakodzera chinzvimbo.Yakanyanya kukura kana kudiki clearance ichakanganisa kunaka kweiyo extruded insulation layer.Kana iyo gap iri diki zvakanyanya, kukurumidza kwekuwedzera kwe ptfe zvinhu kune kunze kwe mold kuchakwidziridzwa, uye zvinhu zvacho zvichachekwa zvakanyanya, zvichitungamira kune yakawandisa fibrosis, zvichikonzera kudzikira kwesimba rakachinjika rekuisa insulation layer, chigadzirwa chinowanzoita longitudinal kuputika kana mukati mekuputika kwekudzivirira, uye kuvhara uye conductor coating haina kusimba (pane "yakasununguka chivharo"). Iyo gap yakakura kwazvo, ichaita kuti ptfe zvinhu kunze kwe mold extrusion velocity inonoke. , zvinhu kudzvinyirirwa pamusoro conductor kunowedzera, kazhinji kuitika extrusion kusagadzikana kana kukonzera kondakita compression rolling uye kubereka "pine" dambudziko, uye conductor haagoni kupfuura nepakati tsono plug chiitiko.
Nguva yekutumira: Jan-01-2018