Kushandisa zvinobudirira PTFE mune a axial split case pombi , zvakakosha kunzwisisa zvinhu zvechinyorwa ichi. Zvimwe zvezvakasarudzika zvePTFE zvinoita kuti ive yakanakisa zvinhu zvekurukwa kurongedza:

1. Yakanakisa makemikari kuramba. Chikonzero chikuru chekushandisa PTFE mukurongedza ndechekuti haina kukanganiswa nemhando dzakasiyana dzemvura inoparadza, kusanganisira yakasimba acids, mabhesi, uye zvinonyungudutsa. Zvichida zvinonyanya kukosha, PTFE inogona kumira yakasimba oxidizing agents se nitric acid, chlorine dioxide, uye yakanyanya kunyura sulfuric acid (oleum).

2. Low coefficient of friction kana wasangana nenzvimbo dzakawanda. PTFE inozivikanwa kuve isina-kunyorova, yakatsetseka, uye yakaderera coefficient ye friction properties. Izvi zvinobatsira kuderedza mashandisirwo emagetsi uye chizvarwa chekupisa pane packing-shaft interface.

Nepo PTFE iine zvayakanakira, zvimwe zvezvivakwa zvayo hazvina kunaka mune dzakawanda pombi yekurongedza maapplication. Matambudziko anosanganikwa nawo nePTFE kurongedza anowanzo kukonzerwa nekushata kwayo kwekupisa uye michina zvivakwa:

1. Cold deformation kana kukambaira pasi pekumanikidzwa. Kukambaira kunowedzera nekuwedzera tembiricha. Kana dzvinyiriro ichiiswa ku100% PTFE kurongedza kwenguva yakati rebei, iyo yekurongedza inogona kuve yakasimba yakasimba uye inoda kugadziridzwa nguva nenguva kuchengetedza chisimbiso. Iyo ine zvakare katsika kekusvina kunze kwepamusoro uye kuzasi kwepakati peiyo stuffing bhokisi re axial split case pombi.

2. Low thermal conductivity. Kana kupisa kwefriction kunogadzirwa mukubatana nepamusoro-speed inotenderera shaft, yakachena PTFE ine tsika yekutora kupisa uye haikwanisi kuibvisa kune yakapoteredza. Kuti udzivise PTFE kurongedza kubva pakupisa kana kupisa, yakakwira yekudonha chiyero inodiwa panzvimbo yekurongedza-shaft.

3. High thermal kuwedzera coefficient. Sezvo tembiricha inowedzera, PTFE inowedzera nekukurumidza kupfuura simbi yakatenderedza. Uku kuwedzera kunowedzera kudzvanywa kwekurongedza pane axial split kesi pombi shaft uye kubereka.

PTFE Fiber Packing

Vazhinji vagadziri vanogadzira kurongedza vanoshandisa PTFE seyakadzika fiber. Zvigadzirwa izvi zvinogona kupihwa semafibhi akaoma, mafibhi akaputirwa nePTFE dispersions, kana faibha dzakaputirwa nemafuta akasiyana siyana. Itsika yakanaka kushandisa zvigadzirwa izvi chete kana pasina imwe PTFE imwe nzira, kusanganisira maapplication ane makemikari ekuora akadai seakasimba oxidizer, kana echikafu kana mishonga yemishonga.

Kune PTFE faibha packing, zvinonyanya kukosha kuomerera kumiganhu yemugadziri patembiricha, kumhanya, uye kudzvanywa. Aya ekurongedza anonzwa zvakanyanya kugadzirisa kana ashandiswa mumidziyo inotenderera. Kazhinji, kudzika kwegland kudzvinyirirwa uye yakakwirira yekudonha mazinga anodiwa pane nekumwe kurongedza.

Yakawedzerwa Polytetrafluoroethylene (ePTFE) Packing

ePTFE yarns akafanana pakuonekwa kuronda PTFE tepi. Iyo inonyanya kuzivikanwa fomu ndeye ePTFE yakamisikidzwa negraphite kuti ivandudze yayo yekupisa conductivity uye kukurumidza rating. ePTFE mabhureki haanzwe zvakanyanya kune kupisa kuvaka pane PTFE fiber packing. ePTFE kurongedza inogona kusangana nekutonhora deformation uye extrusion pane yakanyanya kumanikidza.

PTFE Coated kurongedza

Kana iyo yakanakisa makemikari kuramba yePTFE yakachena isingadiwi, PTFE inogona kuputirwa pane zvakawanda zvefiber zvinhu kuti uvandudze kurongedza kuita uye kutora mukana wezvakanakira PTFE. Aya mafibhi anogonawo kubatsira kuderedza kana kubvisa kumwe kusasimba kwePTFE mabraids akachena.

Synthetic uye girazi faibha yakasanganiswa yarns inogona kuputirwa nePTFE kuti ibudise ehupfumi, inogoneka packing ine yakakwirira kusimba, yakakura extrusion kuramba, uye kushoma tuning senitivity kupfuura PTFE fiber braids. Ivo vanogona zvakare kuputirwa nemusanganiswa wakapararira wePTFE uye graphite kuti uwedzere kuvandudza kugona kweiyo braid yekumhanyisa uye hunhu hwekupisa kupisa.

Aramid fiber packing ine PTFE coatings inogona kushandiswa uko kwakanyanya kupfeka kuramba kunodiwa. Novoid fiber packing nePTFE coating inogona kushandiswa muzvinyoro zvinyoro masevhisi uye ine kusimba kuri nani uye extrusion kuramba kupfuura PTFE fiber braids.

PTFE-yakavharwa kabhoni uye graphite fiber braids ndeimwe yeanonyanya kurongeka. Ivo vane yakanakisa makemikari kuramba (kunze kweakasimba oxidizing agents), kukurumidza-kumhanya kuita, yakakwirira-tembiricha kuita, uye yakanaka kwazvo kusimba. Ivo havaite kupfava kana kuburitsa pane tembiricha yepamusoro uye zvakare kuratidza yakanaka abrasion kuramba.

Nekunzwisisa zvakanakira uye zvipimo zvemhando dzakasiyana dzeakarukwa PTFE kurongedza, unogona kusarudza chigadzirwa chinonyatso kusangana neaxial split kesi kesi pombi yako kana vharafu process sealing zvinodiwa.