Nhanganyaya:Kazhinji, kurongeka kwePTFE chigadzirwa hakusi nyore kudzora nekuti coefficient yayo yemutsara wekuwedzera yakakwira kupfuura yesimbi, uye yayo imwe yevhoriyamu shanduko tembiricha inotenderedza kamuri tembiricha inokonzera vhoriyamu shanduko inenge 1 kusvika 2%.Uyezve, michero yakaonda-yakakomberedzwa yePTFE inozivikanwa kuve yakaoma kugadzira nekuti kwete chete PTFE inochinjika uye yakanyungudika zvinhu, asiwo yakasara kushushikana kunoramba kuripo mushure mekuumbwa dzimwe nguva kunokanganisa nekuda kwekupisa kwekupisa kunogadzirwa panguva yekugadzira machining kana nekuda kwekuchembera mushure mekugadzira.Deformation yakadaro inogona kukanganisa kurongeka kwedimensional.
Nezve kurongeka kwekugadzirisa, PTFE zvigadzirwa dzimwe nguva zvinodiwa zvakafanana zvinotenderwa dimensional kushivirira senge simbi zvinhu.Mumamiriro ezvinhu akadaro, maitiro ePTFE anotsanangurwa pamusoro apa anogona kukonzera matambudziko pakati pevashandisi nevagadziri.Nekumashure uku, chirevo ichi chinotsanangura kurongeka kwePTFE.
General Inobvumirwa Dimensional Kushivirira
Iyi chiyero inotaura zviyero kubva pa1mm kusvika 1000 mm kuitira kana zvinhu zvePTFE yakaumbwa chigadzirwa ichigadzirwa kuburikidza nekumanikidza kana extrusion molding.Izwi rekuti "general" rinoshandiswa muchiyero ichi rinoreva kuti chiyero chinogona kushandiswa kana purani isingaratidzi manhamba kana zviratidzo.
Pakuyera kurongeka kwePTFE, zvinotevera zvakakosha zvePTFE zvinofanira
kuverengerwa:
1. PTFE ine yakaderera thermal conductivity.
2. PTFE ine high coefficient ye linear kuwedzera.
3. Vhoriyamu yePTFE inoshanduka zvakanyanya (neinenge 1 kusvika 2%) panosvika 23°C.
4. PTFE iri elastic.
5. PTFE dzimwe nguva ine residual stress.
Kubva pane zviri pamusoro, PTFE's dimensional mining tolerance inosvika ±0.05 mm kana hafu yeukoshi hwakatarwa muJIS K 6884 (giredhi 1), kunyangwe PTFE's machining accuracy zvinoenderana nehukuru uye chimiro.
Zvisineyi, nekuda kwekusimba kwePTFE, kukosha chaiko kunogona kusiana kana magumo emudziyo wekuyeresa ukasundirwa zvakasimba pamufananidzo wePTFE.Semuyenzaniso, mutsauko unosvika 0.1 mm mukuyerwa ukoshi dzimwe nguva unoitika zvichienderana nekuti micrometer inosundirwa sei pamufananidzo wePTFE.Vashandisi nevagadziri vanofanirwa kufunga nezve iyi pfungwa.
Migumisiro yeAnealing Treatment
Kazhinji, mahara sintering (kubika) maitiro anoiswa kuPTFE mushure mekumanikidza kuumbwa.Panguva sintering, PTFE ari mukati kushushikana aigona kuderera enzanisa akaumbwa zvigadzirwa pamwe coining muitiro (muitiro umo zvinhu sintered mu mold uye wozotonhodzwa pasi kumanikidzwa) iro rekunze layer inodzimwa.
Nekudaro, annealing* marapirwo anoiswa kune iyo zvinhu kana yakakwira dimensional kurongeka kunodiwa kana chimiro chechigadzirwa chakaoma.
Kubvisa kushushikana kwemukati kunogadzirwa panguva yekuumbwa kwemaitiro inzira inoshanda yekuvandudza dimensional kurongeka uye kudzivirira kubva mukushanduka kwayo nekufamba kwenguva.
*Annealing: Maitiro ekuti zvigadzirwa zvakaumbwa zvinotonhodzwa zvishoma nezvishoma patembiricha yakapihwa kubvisa kushushikana kwemukati kunokonzerwa nekupisa kana kushushikana kwemagetsi.
Kukasharara Kwepamusoro
Sezvakataurwa muGeneral Tolerance yePolytetrafluoroethylene (Muchina Cheka), hunhu hwezvinhu hunofanirwa kuverengerwa kana uchiseta kukosha kwepamusoro-soro.
Sezvo resin ichikanganiswa nekupisa panguva yekugadzira pamusoro uye ine elasticity, iyo yepamusoro-yakaoma kukosha haigone kuenzana neyakagadzirwa simbi pamusoro.
Kazhinji, mutsauko mukupedza kwehushasha hwepamusoro unokonzerwa nemamiriro ekugadzira anosanganisira kutenderera uye kukurumidza kwekudya uye maturusi ekucheka (mablades).
Zviratidzo zvekare zvakaunzwa makore angangoita makumi matanhatu apfuura, uye saka zvinozivikanwa.Zvinotora nguva kuti zviratidzo zvitsva zvizivikanwe pakati pevagadziri veparipheral.Mukuwedzera, munyaya yezvikamu zvinoshanda, maitiro aripo anowanzo kuteverwa.Nokudaro, zvakakosha kunzwisisa hukama pakati pezviratidzo zvitsva uye zvekare.
Nguva yekutumira: Jan-14-2019