ʻO-Apo i uhi ʻia ʻo PTFE
He aha nā PTFE Coated O-Rings
ʻO nā apo-O i uhi ʻia me ka PTFE he mau sila hui pū ʻia me kahi ʻiʻo apo-O rubber kuʻuna (e laʻa, NBR, FKM, EPDM, VMQ) ma ke ʻano he substrate elastic, kahi i hoʻopili ʻia ai kahi ʻili lahilahi, like, a paʻa o ka polytetrafluoroethylene (PTFE). Hoʻohui kēia ʻano i nā pono o nā mea ʻelua, e hopena ana i nā ʻano hana kū hoʻokahi.
Nā Wahi Hoʻohana Mua
Ma muli o ko lākou mau waiwai koʻikoʻi, hoʻohana nui ʻia nā apo O i uhi ʻia e ka PTFE i nā wahi koi me nā koi sila kūikawā:
ʻOihana Kemika a me ka Petrochemical:
Ke sila ʻana i nā kiwikā, nā pamu, nā mea hana, a me nā flanges paipu e lawelawe ana i nā mea ʻino loa e like me nā waikawa ikaika, nā alkalis ikaika, nā oxidizers ikaika, a me nā mea hoʻoheheʻe organik.
Ke sila ʻana i loko o nā ʻōnaehana hoʻouna kemika maʻemaʻe kiʻekiʻe e pale aku i ka haumia.
ʻOihana lāʻau lapaʻau a me Biotechnology:
Ke sila ʻana no nā lako hana e pono ai ka maʻemaʻe kiʻekiʻe, ʻaʻohe leaching, a ʻaʻohe haumia (e laʻa, bioreactors, fermenters, purification systems, fill lines).
Ke sila nei e kū'ē i nā mea ho'oma'ema'e kemika 'ino a me ka mahu wela ki'eki'e i ho'ohana 'ia ma nā ka'ina hana CIP (Clean-in-Place) a me SIP (Sterilize-in-Place).
ʻOihana Meaʻai a me Mea Inu:
Nā sila no nā lako e kū ana i nā lula pili meaʻai FDA/USDA/EU (e laʻa me nā lako hana, nā mea hoʻopihapiha, nā paipu).
Kūpaʻa i nā mea hoʻomaʻemaʻe a me nā sanitizers papa meaʻai.
ʻOihana Semiconductor a me nā ʻOihana Uila:
Nā sila no ka wai ultrapure (UPW) a me nā ʻōnaehana hoʻouna a me ka lawelawe ʻana i nā kemika maʻemaʻe kiʻekiʻe (nā waikawa, alkalis, nā solvents), e koi ana i ka hana ʻāpana haʻahaʻa loa a me ka hoʻoheheʻe ʻana o ka ion metala.
Nā sila no nā keʻena hakahaka a me nā lako hana plasma (e koi ana i ka hoʻokuʻu ʻana i ke kinoea haʻahaʻa).
ʻOihana Kaʻa:
Ke sila ʻana ma nā wahi wela kiʻekiʻe e like me nā ʻōnaehana turbocharger a me nā ʻōnaehana EGR.
ʻO nā sila e pono ai ka haʻalulu haʻahaʻa a me ke kūpaʻa kemika i nā hoʻoili a me nā ʻōnaehana wahie.
Nā hoʻohana ʻana i nā ʻōnaehana hoʻoluʻu pila o nā kaʻa ikehu hou.
Aerospace & Palekana:
ʻO nā sila e pono ai ka hilinaʻi kiʻekiʻe, ke kūpaʻa ʻana i ka mahana kiʻekiʻe, a me ke kūpaʻa ʻana i nā wahie kūikawā/nā wai hydraulic i nā ʻōnaehana hydraulic, nā ʻōnaehana wahie, a me nā ʻōnaehana kaohi kaiapuni.
ʻOihana Laulā:
Nā sila no nā cylinders pneumatic a me hydraulic e koi ana i ka friction haʻahaʻa, ke ola lōʻihi, a me ke kūpaʻa ʻana i ka ʻaʻahu (ʻoi aku hoʻi no ka neʻe reciprocating wikiwiki kiʻekiʻe, alapine kiʻekiʻe).
Nā sila no nā kiwikā like ʻole, nā pamu, a me nā mea hoʻohui e pono ai ke kūpaʻa kemika a me nā waiwai ʻaʻole e pipili.
Nā sila no nā lako mīkini hoʻoheheʻe (e koi ana i ka hoʻokuʻu ʻana i ke kinoea haʻahaʻa).
Nā Pōmaikaʻi Kūikawā a me nā ʻAno Hana
ʻO ka pōmaikaʻi nui o nā apo O i uhi ʻia e ka PTFE aia i ka hana hoʻohuihui i hoʻonui ʻia mai ko lākou ʻano:
Ka Inertness Kemika Kūikawā:
ʻO kekahi o nā pono nui. Hōʻike ka PTFE i ke kūpaʻa koʻikoʻi i nā kemika āpau (me nā waikawa ikaika, nā alkalis ikaika, aqua regia, nā mea hoʻoheheʻe organik, a me nā mea ʻē aʻe), kahi hiki ʻole i ka hapa nui o nā substrates rubber ke hoʻokō wale. Hoʻokaʻawale maikaʻi ka uhi ʻana i nā media corrosive mai ka ʻōpū rubber o loko, e hoʻonui nui ana i ka laulā noi o ke apo O i nā wahi kemika koʻikoʻi.
Ka helu haʻahaʻa loa o ka friction (CoF):
He pōmaikaʻi koʻikoʻi. Loaʻa iā PTFE kekahi o nā waiwai CoF haʻahaʻa loa ma waena o nā mea paʻa i ʻike ʻia (maʻamau 0.05-0.1). ʻO kēia ka mea e ʻoi aku ai nā apo O i uhi ʻia i nā noi sila ikaika (e laʻa, nā koʻokoʻo piston reciprocating, nā ʻau wili):
Hoʻemi nui i ka haki ʻana a me ka holo ʻana o ka friction.
Hoʻēmi i ka wela a me ke komo ʻana i hoʻokumu ʻia e ka friction.
Hoʻolōʻihi i ke ola o ka sila (ʻoi aku hoʻi i nā noi wikiwiki a me ke alapine kiʻekiʻe).
Hoʻomaikaʻi i ka pono o ka ikehu o ka ʻōnaehana.
Ka laulā o ka mahana hana ākea:
Mālama ka uhi PTFE iā ia iho i ka hana ma waena o kahi pae mahana ākea loa mai -200°C a i +260°C (pōkole a hiki i +300°C). Hoʻonui nui kēia i ka palena wela o luna o ke apo O-rubber base (e laʻa, ʻo ke kumu NBR i kaupalena pinepine ʻia i ~120°C, akā me ka uhi PTFE hiki ke hoʻohana ʻia i nā mahana kiʻekiʻe, ma muli o ka rubber i koho ʻia). Hōʻoiaʻiʻo ʻia ka hana haʻahaʻa-mahana.
Nā Waiwai Kūpaʻa ʻOle Maikaʻi Loa a me ka ʻAʻole e Maʻū:
He haʻahaʻa loa ka ikehu ʻili o ka PTFE, e kūpaʻa loa ana i ka hoʻopili ʻana a me ka pulu ʻole ʻana e ka wai a me nā wai ʻaila. ʻO ka hopena kēia:
Hoʻemi ʻia ka haumia, ka coking, a i ʻole ka pipili ʻana o nā koena media ma nā ʻili sila.
Maʻalahi ka hoʻomaʻemaʻe ʻana, kūpono loa no nā ʻoihana hoʻomaʻemaʻe kiʻekiʻe e like me ka meaʻai a me nā lāʻau lapaʻau.
Mālama ʻia ka hana sila ʻoiai me nā mea viscous.
Ka Maʻemaʻe Kiʻekiʻe a me nā Leachables Haʻahaʻa:
ʻO ka ʻili uhi PTFE laumania a mānoanoa hoʻi e hōʻemi ana i ka leaching o nā ʻāpana, nā mea hoʻohui, a i ʻole nā mea kaumaha molekala haʻahaʻa. He mea koʻikoʻi kēia no nā noi maʻemaʻe kiʻekiʻe loa i nā semiconductors, pharma, biotech, a me ka meaʻai a me ka mea inu, e pale pono ana i ka haumia o ka huahana.
Ke kūpaʻa maikaʻi o ka hoʻohana ʻana:
ʻOiai ʻaʻole kūpono loa ke kūpaʻa ʻana o ka PTFE i ka ʻaʻahu ʻia, ʻo kona CoF haʻahaʻa loa e hōʻemi nui ana i nā helu ʻaʻahu. Ke hui pū ʻia me kahi substrate rubber kūpono (e hāʻawi ana i ke kākoʻo a me ke kūpaʻa) a me ka hoʻopau ʻana/lubrication ʻili kūpono, hōʻike pinepine nā O-rings i uhi ʻia i ke kūpaʻa ʻana o ka ʻaʻahu ma mua o nā O-rings rubber ʻōlohelohe i nā noi ikaika.
Ka Hoʻonui ʻia o ke Kū'ē Kemika o ka Rubber Substrate:
Mālama ka uhi ʻana i ke kumu o loko o ka laholio mai ka hoʻouka ʻana o ka pāpāho, e ʻae ana i ka hoʻohana ʻana i nā mea laholio me nā waiwai kūlohelohe maikaʻi aʻe (e like me ka elasticity a i ʻole ke kumukūʻai, e like me NBR) i loko o ka pāpāho e pehu maʻamau, paʻakikī, a hoʻohaʻahaʻa paha i ka laholio. Hoʻopaʻa maikaʻi ia i ka elasticity o ka laholio me ke kūpaʻa kemika o PTFE.
Hoʻohālikelike maikaʻi me ka Vacuum:
He mānoanoa maikaʻi ko nā uhi PTFE kiʻekiʻe a he haʻahaʻa loa ka hoʻokuʻu ʻana i ke kinoea, i hui pū ʻia me ka elasticity o ke kumu rubber, e hāʻawi ana i ka sila vacuum maikaʻi.
3. Nā Manaʻo Koʻikoʻi
Kumukūʻai: ʻOi aku ke kiʻekiʻe ma mua o nā apo-O laholio maʻamau.
Nā Pono Hoʻouka: Pono ka lawelawe akahele e pale aku i ka hōʻino ʻana i ka uhi me nā mea ʻoi. Pono nā ʻauwaʻa hoʻouka e loaʻa nā chamfers alakaʻi kūpono a me nā ʻili laumania.
Ka Pono o ka Uhi ʻana: He mea koʻikoʻi ke ʻano o ka uhi ʻana (pili, kūlike, ʻaʻohe puka liʻiliʻi). Inā haki ka uhi ʻana, e nalowale ana ke kūpaʻa kemika i hoʻonui ʻia i ka laholio i hōʻike ʻia.
Hoʻonohonoho Compression: Hilinaʻi nui ʻia ma ka substrate rubber i koho ʻia. ʻAʻole hāʻawi ka uhi ponoʻī i ke kūpaʻa compressive.
Ola Hana Hoʻoikaika: ʻOiai ʻoi aku ka maikaʻi ma mua o ka laholio ʻōlohelohe, e pau ka uhi ʻana i ka wā e hoʻolōʻihi ʻia ai ka neʻe ʻana a i ʻole ka neʻe ʻana o ka wili. ʻO ke koho ʻana i nā laholio kumu kūpaʻa i ka ʻaʻahu (e laʻa, FKM) a me ka hoʻolālā i hoʻomaikaʻi ʻia hiki ke hoʻolōʻihi i ke ola.
Hōʻuluʻulu manaʻo
ʻO ke kumu nui o nā apo O i uhi ʻia me ka PTFE aia i ke ʻano o ka hāʻawi ʻana o ka uhi PTFE i ka inertness kemika kiʻekiʻe, kahi coefficient haʻahaʻa loa o ka friction, kahi pae mahana ākea, nā waiwai non-stick, ka maʻemaʻe kiʻekiʻe, a me ka pale substrate i nā apo O rubber kuʻuna. He hopena kūpono lākou no nā pilikia sila koʻikoʻi e pili ana i ka corrosion ikaika, ka maʻemaʻe kiʻekiʻe, ka friction haʻahaʻa, a me nā pae mahana ākea. I ke koho ʻana, he mea nui e koho i ka mea substrate rubber kūpono a me nā kikoʻī uhi e pili ana i ka noi kikoʻī (media, mahana, kaomi, dynamic/static), a hōʻoia i ka hoʻonohonoho pololei a me ka mālama ʻana e mālama i ka pono o ka uhi ʻana a me ka hana sila.
Hōʻuluʻulu ka papa ma lalo nei i nā ʻano koʻikoʻi a me nā noi o nā apo O i uhi ʻia me ka PTFE:
