Ma waho aʻe o ka wai, ʻo ka hapa nui o ka media i hoʻohana ʻia i ka pā wela wela he hopena lean, waiwai waiwai, sodium hydroxide, sulfuric acid a me nā mea ʻenehana ʻē aʻe, e maʻalahi ke kumu o ka corrosion o ka pā a me ka pehu a me ka ʻelemakule o ka gasket.
ʻO ka pā a me ka gasket nā mea koʻikoʻi o ka hoʻololi wela o ka pā, no laila he mea koʻikoʻi ke koho ʻana i ka pā a me ka gasket.
ʻO ke koho ʻana o nā mea pāpaʻi o ka pā wela wela:
| ʻO ka wai hoʻomaʻemaʻe, ka wai kahawai, ka aila ʻai, ka ʻaila mineral a me nā mea ʻē aʻe | kila kila (AISI 304, AISI 316, etc.). |
| wai kai, brine, salinization a me nā mea ʻē aʻe | titanium a me titanium palladium(Ti, Ti-Pd) |
| E hoʻoheheʻe i ka ʻakika sulfuric, e hoʻoheheʻe i ka paʻakai sulfur paʻakai wai, ka wai wai inorganic a me nā mea ʻē aʻe. | 20Cr, 18Ni, 6Mo (254SMO) a me nā huila ʻē aʻe |
| ʻO ka wela kiʻekiʻe a me ke kiʻekiʻe o ka noʻonoʻo kiʻekiʻe ʻo caustic soda medium | Ni |
| ʻO ka ʻakika sulfuric concentrated, ka waika hydrochloric a me ka ʻakika phosphoric | ʻO ka huila Hastelloy (C276, d205, B20) |
Ke koho waiwai o ka gasket no ka mea hoʻololi wela pā:
ʻIke ka hapa nui o ka poʻe he mea maʻamau ka hoʻohana ʻana i nā gaskets sealing rubber, e like me EPDM, nitrile rubber, hydrogenated nitrile rubber, fluororubber a pēlā aku.
| EPDM | ʻO ka mahana lawelawe - 25 ~ 180 ℃. He kūpono ia no ka wai wai wela nui, ka mahu, ka ozone atmospheric, ka aila lubricating non petroleum, ka waikawa palupalu, ke kumu palupalu, ketone, ka waiʻona, ester, etc. |
| NBR | ʻO ka mahana lawelawe - 15 ~ 130 ℃. He kūpono ia no nā huahana aila mineral like ʻole e like me ka fluid medium, light fuel oil, lubricating oil, animal and vegetable oil, wai wela, wai paʻakai, etc. |
| HNBR | ʻO ka mahana lawelawe - 15 ~ 160 ℃. He kūpono ia no ka wai wela wela, ka aila maʻemaʻe, ka aila sulfur a me nā pūhui i loko o ka sulfur, kekahi mau aila hoʻoili wela, R134a hou a me ka ozone. |
| FKM | ʻO ka mahana lawelawe - 15 ~ 200 ℃. He mea kūpono ia no ka wai, e like me ka sulfuric acid concentrated, caustic soda, heat transfer oil, alcohol fuel oil, acid fuel oil, high-temperature steam, chlorine water, phosphate, etc. |
Ka manawa hoʻouna: Sep-16-2021