Hoʻopau Maka Flange
Hoʻopau maka flange
Pono ka code ASME B16.5 e loaʻa i ka maka flange (ke alo i hāpai ʻia a me ka maka palahalaha) i kahi ʻano koʻikoʻi e hōʻoia i ka pili ʻana o kēia ʻili me ka gasket a hāʻawi i kahi sila kiʻekiʻe.
Pono ka hoʻopau serrated, concentric a i ʻole spiral, me 30 a 55 mau ʻīniha i kēlā me kēia ʻīniha a me ka hopena o ka ʻala ma waena o 125 a me 500 micro iniha. ʻAe kēia i nā māka like ʻole o ka pau ʻana o ka ʻili e hoʻolako ʻia e nā mea hana flange no ka ʻili hoʻopili gasket o nā flanges metala.
Hōʻike ke kiʻi i kahi hoʻopau serrated ma ka Raised Face.
ʻO nā Surfaces i hoʻohana nui ʻia
Hoʻopau waiwai
ʻO ka hoʻohana nui ʻia o kēlā me kēia flange surface finish, no ka mea maʻamau, kūpono ia no nā kūlana lawelawe maʻamau. Ma lalo o ke kaomi ʻana, e hoʻokomo ʻia ka helehelena palupalu mai kahi gasket i loko o kēia hoʻopau, e kōkua ana i ka hana ʻana i kahi sila, a hoʻokumu ʻia kahi kiʻekiʻe o ka friction ma waena o nā ʻili pili.
Hoʻokumu ʻia ka pau ʻana no kēia mau flanges e kahi mea hana radius round-nosed 1.6 mm ma ka helu hānai o 0.8 mm no ka hoʻololi ʻana a hiki i 12 iniha. No ka nui 14 iniha a ʻoi aku ka nui, ua hana ʻia ka hoʻopau me 3.2 mm mea hana puni ihu ma kahi hānai o 1.2 mm i kēlā me kēia kipi.
Kauʻi ʻāwili
ʻO kēia kekahi he puʻupuʻu spiral hoʻomau a phonographic paha, akā ʻokoʻa ia mai ka pau ʻana o ke kumukūʻai no ka mea e hana maʻamau ʻia ke awāwa me ka mea hana 90-° e hana ana i kahi geometry "V" me 45° angled serration.
Concentric Serrated
E like me ka hōʻike ʻana o ka inoa, ʻo kēia hoʻopau ʻana i nā ʻāpana concentric. Hoʻohana ʻia kahi hāmeʻa 90° a ua hoʻokaʻawale ʻia nā serrations ma ke alo.
Hoʻopau maʻalahi
ʻAʻole ʻike ʻia kēia hoʻopau ʻana i nā hōʻailona mea hana. Hoʻohana maʻamau ʻia kēia mau hoʻopau no nā gaskets me nā alo metala e like me ka ʻaʻahu pālua, ke kila pālahalaha a me ka metala corrugated. Hoʻopili nā ʻili maʻemaʻe e hana i kahi sila a hilinaʻi i ka palahalaha o nā maka kūʻē e hana i kahi sila. Loaʻa ʻia kēia ma ka loaʻa ʻana o ka ʻili hoʻopili gasket i hoʻokumu ʻia e kahi puʻu spiral hoʻomau (i kapa ʻia i kekahi manawa phonographic) i hana ʻia e kahi mea hana puni ihu radius 0.8 mm ma ka helu hānai o 0.3 mm i kēlā me kēia kipi me ka hohonu o 0.05 mm. ʻO kēia ka hopena i ka ʻawaʻawa ma waena o Ra 3.2 a me 6.3 micrometers (125 - 250 micro inch).
ʻŌlelo a ka mea kākau…
HOPE MAHELE
He kūpono ia no ka ʻili ʻili a me nā mea hao ʻole?
No ke ʻano o kēia ʻano noi?
Ninau pinepine ia na ninau maluna. Ke ho'āʻo nei au e hāʻawi i ka pane pololei.
ʻOi aku ka maʻamau o nā flanges hoʻopau maʻemaʻe no nā paipu haʻahaʻa haʻahaʻa a/a i ʻole ke anawaena nui a i manaʻo nui ʻia no ka hoʻohana ʻana me nā metala paʻa a i ʻole nā mea ʻeha ʻeha.
Loaʻa nā hoʻopau maʻemaʻe ma nā mīkini a i ʻole nā hui flanged ʻē aʻe ma mua o nā flanges paipu. I ka hana ʻana me ka hoʻopau maʻemaʻe, pono e noʻonoʻo i ka hoʻohana ʻana i kahi pahu ʻoi aku ka lahilahi e hōʻemi i nā hopena o ke kolo a me ke kahe anuanu. E hoʻomaopopo naʻe, ʻo ka ʻeke ʻoi aku ka lahilahi a me ka hoʻopau maʻemaʻe, i loko a me lākou iho, e koi i ka ikaika compressive kiʻekiʻe (ʻo ia hoʻi ka bolt torque) e hoʻokō ai i ke sila.
Ua ʻike paha ʻoe i kēia manaʻo:
ʻO ka hana ʻana i nā ʻaoʻao gasket o nā flanges a hiki i ka hoʻopau ʻana o Ra = 3.2 – 6.3 micrometer
(= 125 – 250 microinchesAARH)
AARHkū no ka Arithmetic Average Roughness Height. Hoʻohana ʻia ia no ke ana ʻana i ke ʻano oka (ʻoi aku ka maʻalahi) o nā ʻili. 125AARH'o ia ho'i, he 125 micro inches ka 'awelika ki'eki'e o ka pi'i a me ka lalo o ka ili.
63 AARHua kuhikuhi ʻia no nā hui ʻano Ring.
125-250AARH(Ua kapa ʻia ʻo ia ka hoʻopau maʻemaʻe) i kuhikuhi ʻia no nā Spiral Wound Gaskets.
250-500AARH(kapa ʻia ʻo ia ka pau ʻana o ka waihona) ua kuhikuhi ʻia no nā gaskets palupalu e like me NON Asbestos, Graphite sheets, Elastomers etc.
I kekahi manawaAARHua oleloia no hoiRaʻo ia ka Roughness Average a me ke ʻano like.
Ka manawa hoʻouna: Jul-06-2020