Kune marudzi akawanda emavharuvhu, asi basa rekutanga rakafanana, ndiko kuti, kubatanidza kana kugura kuyerera kwepakati. Nokudaro, dambudziko rekuisa chisimbiso chevhavha rinonyanya kuoneka.
Kuti ive nechokwadi chekuti vharafu inogona kugura kuyerera kwepakati zvakanaka pasina kubuda, zvinodikanwa kuve nechokwadi kuti chisimbiso chevhavha chakamira. Pane zvikonzero zvakawanda zvekudonha kwevharuvhu, zvinosanganisira kusanzwisisika kwemaitiro ekugadzira, chakaremara chisimbiso chekubatanidza pamusoro, kusununguka kusungirira zvikamu, kusununguka kwakasununguka pakati pemuviri wevharuvhu nebhoneti, nezvimwe. Matambudziko ose aya anogona kutungamirira pakuvharwa kwakashata kwevhavha. Zvakanaka, saka kugadzira dambudziko rekudonha. Naizvozvo, tekinoroji yekuisa chisimbiso chevharuvhu yakakosha tekinoroji ine chekuita nekuita kwevharuvhu uye mhando, uye inoda yakarongeka uye yakadzama tsvakurudzo.
Izvo zvinowanzo shandiswa zvekuisa chisimbiso zvevharuvhu zvinonyanya zvinosanganisira anotevera marudzi:
1. NBR
Yakanakisa mafuta kuramba, yakakwira kupfeka kuramba, yakanaka kupisa kupisa, kunamatira kwakasimba. Zvayakaipira kusamira zvakanaka kwekushisa kwakadzikama, kushomeka kweozone, kusasimba kwemagetsi, uye kuderera zvishoma.
2. EPDM
Chinhu chinonyanya kukosha cheEPDM ndechekudzivirira kwayo oxidation, ozone resistance uye corrosion resistance. Sezvo EPDM iri yemhuri ye polyolefin, ine yakanakisa vulcanization maitiro.
3. PTFE
PTFE ine makemikari akasimba ekupikisa, kupikisa kumafuta akawanda uye zvinonyungudutsa (kunze kweketoni uye esters), kumira zvakanaka kwemamiriro ekunze uye kupikisa ozone, asi kusagadzikana kwechando.
4. Kanda simbi
Cherechedza: Cast iron inoshandiswa kumvura, gasi uye mafuta midhiya ine tembiricha ye≤100°C uye kumanikidzwa kwezita re≤1.6mpa.
5. Nickel-based alloy
Cherechedza: Nickel-based alloys anoshandiswa pamapaipi ane tembiricha ye -70 ~ 150°C uye yekumanikidza kweinjiniya PN≤20.5mpa.
6. Copper alloy
Copper alloy ine yakanaka kupfeka kuramba uye inokodzera mvura uye mapombi eutsi ane tembiricha≤200℃uye nominal pressure PN≤1.6mpa.
Nguva yekutumira: Zvita-02-2022
