Thread seal tepi

Thread seal tape (inozivikanwawo se PTFE tepi kana tepi yepumba) ifirimu repolytetrafluoroethylene (PTFE) rinoshandiswa mukusunga shinda dzepombi.Tepi inotengeswa yakachekwa kuhupamhi chaihwo uye yakakuvadzwa pane spool, zvichiita kuti zvive nyore kutenderedza patambo dzepombi.Iyo inozivikanwa zvakare neiyo genericed yekutengeserana-zita Teflon tepi;nepo Teflon yakanyatsofanana nePTFE, Chemours (the trade-mark holders) vanoona kushandiswa uku kwakashata, kunyanya sezvo vasingachagadziri Teflon mutepi fomu.Thread seal tepi lubricates inobvumira kudzika kwakadzika kwetambo, uye inobatsira kudzivirira. shinda kubva pakubata kana ichinge isina kuvharwa.Tepi inoshandawo seanoremara filler uye thread lubricant, ichibatsira kusunga mubatanidzwa pasina kuomesa kana kuita kuti zvive zvakaoma kuomesa, uye panzvimbo pacho kuita kuti zvive nyore kuomesa.

Kazhinji tepi inoputirwa neshinda yepombi katatu isati yaiswa panzvimbo.Inowanzo shandiswa mukushambadzira mumashandisirwo anosanganisira akamanikidzwa mvura masisitimu, yepakati yekudziya masisitimu, uye mhepo yekumanikidza midziyo.

Types

Thread seal tepi inowanzotengeswa mudiki spools.
Kune maviri eUS maitiro ekuona kunaka kwechero PTFE tepi.MIL-T-27730A (yakasakara yemauto ichiri kushandiswa mumaindasitiri muUS) inoda ukobvu hushoma hwe3.5 mils uye hushoma hwePTFE kuchena kwe99%. ukobvu hunodiwa hweMIL-T-27730A uye inowedzera hushoma density ye1.2 g/cm3. Relevant zviyero zvinogona kusiyana pakati maindasitiri;tepi yekuisa gasi (kuUK gasi mirau) inofanirwa kuve yakakora kupfuura iyo yemvura.Kunyange zvazvo PTFE pachayo yakakodzera kushandiswa ne-high-pressure oxygen, giredhi rematepi rinofanirawo kuzivikanwa kuti harina girizi.

Thread seal tepi inoshandiswa mumapombi ekushandisa inowanzo chena, asi inowanikwawo mune akasiyana mavara.Inowanzoshandiswa kuenderana nemapaipi ane mavara ane mavara (US, Canada, Australia neNew Zealand: yero yegasi rechisikigo, girini yeokisijeni, nezvimwewo).Aya mavara-makodhi eshinda yekuisa chisimbiso tepi akaunzwa naBill Bentley weUnasco Pty Ltd muma1970s.KuUK, tepi inoshandiswa kubva kune mavara ereel, eg yero reel yegasi, yegirini pamvura inonwiwa.

Ichena - inoshandiswa paNPT tambo dzinosvika 3/8 inch
Yero - inoshandiswa patambo dzeNPT 1/2 inch kusvika 2 inch, inowanzonzi "tepi yegesi"
Pingi - inoshandiswa paNPT tambo 1/2 inch kusvika 2 inch, yakachengeteka kune propane uye mamwe mafuta ehydrocarbon.
Green - isina mafuta PTFE inoshandiswa pamitsetse yeokisijeni uye mamwe magasi ekurapa chaiwo
Grey - ine nickel, anti-seizing, anti-gailling uye anti-corrosion, inoshandiswa papombi dzisina tsvina.
Mhangura - ine magranules emhangura uye inopupurirwa seshinda yekuzora asi kwete sealer.
MuEurope BSI yakajairwa BS-7786:2006 inotsanangura magiredhi akasiyana-siyana nemhando dzemhando dzePTFE shinda yekuvharisa tepi.