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, he mea 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 sulfuric acid, dilute sulfur paʻakai wai wai, inorganic aqueous solution 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 mea kūpono ia no ka wai me ka 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 mea hoʻohuihui 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