Mumunda wepurasitiki zvinhu,PTFE(polytetrafluoroethylene) inomira pachena seyakanakisa uye inogoneka mhinduro kune akasiyana maapplication. Nezvivakwa zvayo zvakanakisa uye huwandu hwakawanda hwekushandisa, yave chinhu chakakosha mumaindasitiri akasiyana. Mune ino blog post, isu tichaongorora zvivakwa uye mabhenefiti ePTFE rods, anowanikwa mune ese ari maviri extruded uye akaumbwa mafomu.
Kutanga nemhando dzakasimudzwa, tsvimbo idzi dzinogadzirwa muhukuru hwese, kubva pa1/8" mudhayamita kusvika kune inoshamisa 8". The general kureba PTFE extruded tsvimbo inenge 1000mm, izvo zvinoita kuti vakawanda kushanda. Ukuwo, extrudedPTFE tsvimbos anowanikwa mumadhayamita kusvika 16 inches uye kureba kwe300 mm. Yakasiyana-siyana saizi sarudzo inoita kuti vatengi vagone kuwana chigadzirwa chinonyatsoenderana nezvavanoda chaizvo.
Imwe yemabhenefiti akakosha ePTFE tsvimbos ndiko kukwidziridzwa kuita kuburikidza nekushandiswa kwekuzadza (kusimbisa) zvinhu. Aya matanda anogona kugadzirwa nezvinhu zvakasiyana-siyana zvekusimbisa zvakadai sefiberglass, graphite uye bronze. Aya ekusimbisa anovandudza zvakanyanya michina yePTFE, ichiita sarudzo yakakodzera yekuda maapplication.
Kuramba kwemamiriro ekunze ndechimwe chezvinhu zvikuru zvePTFE rods, zvinhu zvine hupenyu hwekuchembera hwakanakisa pakati pemapurasitiki. Izvi zvinoreva kuti matanda ePTFE anogona kumira nemamiriro ekunze akaoma pasina kurasikirwa nemidziyo yavo kana kushatisa nekufamba kwenguva. Uyezve,PTFE tsvimbos ine yakanakisa corrosion resistance, ichiita kuti ive yakanakira maapplication anosanganisira akasimba asidhi, mabhesi, mvura, uye akasiyana organic solvents.
Chimwe chinhu chinocherechedzwa chePTFE rods ndiko kuzara kwavo kwakakwira, uko kunowanzoonekwa seine yakaderera coefficient yekupokana pakati pemapurasitiki. Iine coefficient of friction yakaderera se0.04, PTFE tsvimbo dzinopa yakanakisa lubricity, kuderedza kupfeka uye kuve nechokwadi chekushanda kwakanaka mumhando dzakasiyana dzekushandisa.
Imwe yenzvimbo idzo PTFE inopenya chaizvo kugona kwayo kutsungirira kupisa kwakanyanya.PTFE tsvimbos inokwanisa kumira kwenguva yakareba sevhisi tembiricha ye200 kusvika 260 madhigirii celsius, ichiita kuti ive yakakodzera kushandiswa munzvimbo dzakanyanyisa-tembiricha. Uku kupikisa kwepamusoro kwekupisa kunowedzera kuvimbika uye kusimba kwePTFE tsvimbo.
Kusiyana neizvi, PTFE tsvimbo dzinoratidzawo kuita kwakanakisa pakudziya kwakaderera. Kunyangwe tembiricha ikadonha kusvika -196 madhigirii celsius, tsvimbo yePTFE inogona kuramba ichirebesa 5%, ichiratidza kuchinjika kwayo uye kusimba pasi pekutonhora kwakanyanya.
Pamusoro pezvo, matanda ePTFE anogona kuisirwa zvinangwa zvekubatanidza, zvichibvumira kubatana kwakachengeteka uye kuwedzera kushandiswa kwakasiyana-siyana. Ichi chivakwa chinoita PTFE tsvimbo yakanakira akasiyana ezvimiro uye mainjiniya mapurojekiti.
Mukupedzisa, PTFE tsvimbo mhinduro inochinja-chinja uye yakavimbika ine zvinoshamisa zvivakwa. Iwo anowanikwa mune ese ari maviri extruded uye akaumbwa mafomu, pamwe neakasiyana saizi sarudzo, achibvumira kuchinjika kusangana nezvinodiwa zvakasiyana zvekushandisa. Iko kukwidziridzwa kwekuita kunowanikwa nesimbi yekusimbisa inowedzera kuwedzera huwandu hwekushandisa kwePTFE tsvimbo. Kubva kumamiriro ekunze uye kushora kuramba kusvika kune yakakwira lubricity, tembiricha kuramba uye kunyangwe cryogenic kuita, PTFE tsvimbo dzinopa musanganiswa usingaenzaniswi wehunhu. Saka kunyangwe iwe uchida zvinhu zvakavimbika zvezvimiro zvekushandisa, iyo indasitiri yemakemikari, kana neimwe nzira, funga PTFE tsvimbo nekuita kwayo kwakanaka uye kusimba kwenguva refu.
Nguva yekutumira: Aug-30-2023
