Ua ʻike ʻia he hopena nui ka pōʻino metala i ke ola valve, hilinaʻi a me ke ola lawelawe.ʻO ka hana o nā mea mechanical a me nā mea corrosive ma ka metala e hoʻonui nui i ka lole holoʻokoʻa o ka ʻili pili.ʻO ka nui o ka ʻaʻahu ʻana ma ka ʻili frictional o ka valve i ka wā e hana ai.I ka hana ʻana o ka valve, ua ʻeha a pōʻino nā ʻaoʻao frictional ma muli o ka hana like ʻana o ka mechanical a me ke kemika a i ʻole ka electrochemical ma waena o ka metala a me ke kaiapuni.No nā valves, he paʻakikī ke ʻano o ka wā no kā lākou hana pipeline, a ʻo ka hele ʻana o ka hydrogen sulfide, carbon dioxide a me kekahi mau mea kūlohelohe i loko o ka media e like me ka aila, ke kinoea maoli a me ka wai reservoir e hoʻonui ai i ka mana luku o ka ʻili metala a nalowale koke. hiki ke hana.

ʻO ka corrosion kemika o nā metala e pili ana i ka mahana, ka ukana mechanical o nā ʻāpana friction, nā sulfides i loko o nā mea lubricating, ka paʻa o ka pale ʻana o ka waikawa, ka lōʻihi o ka launa ʻana o ka waena, ka catalysis o nā metala i ke kaʻina hana nitriding, ka wikiwiki o ka hoʻololi ʻana o ka mole-a-metala o nā mea corrosive, a pēlā aku.No laila, ʻo nā ʻano metala anti-corrosion (a i ʻole nā ​​ana) a me ka hoʻohana ʻana i nā mea synthetic valves, e lilo i hoʻokahi o nā kumuhana noiʻi ʻoihana valve o kēia manawa.

1. Anti-corrosion o ka pahu metala

Hoʻomaluʻia nā Valves Metal mai ka'ā'ī ma ka uhiʻana iā lākou me kahi pale pale (pena, pigment, mea lubricating, a me nā mea'ē aʻe) e pale ai i ka valve mai ka'ōpala i ka wā o ka hanaʻana, ka mālamaʻana, ka laweʻana, a me ka hoʻohana.

ʻO ke ʻano anticorrosion o Metal Valve e pili ana i ka manawa palekana e pono ai, ka lawe ʻana a me nā kūlana mālama, nā ʻano hana valve a me nā mea waiwai, ʻoiaʻiʻo, e noʻonoʻo i ka hopena waiwai o ka hāpai ʻana i ka anticorrosion.

ʻEhā mau ʻano nui o ka pale ʻana i ka corrosion no nā Metal Valves a me kā lākou mau ʻāpana:

1.1 E hoʻokuʻu i ka mea hoʻopaneʻe corrosion i loko o ka ea mahu (i uhi ʻia me ka pepa blotting, puhi ʻia i loko o ke keʻena huahana, etc.).

1.2 E hoʻohana i ka wai paʻa a me ka waiʻona.

1.3 E hoʻopili i kahi uhi lahilahi o nā mea anticorrosive i ka ʻili o ka valve a me kāna mau ʻāpana.

1.4 E hoʻopili i ka kiʻiʻoniʻoni i hoʻopaʻa ʻia a i ʻole polymer film i ka ʻili o ka valve a me kāna mau ʻāpana.

2. Hoʻohana ʻana i ka ʻili wai

ʻOi aku ka maikaʻi o nā valve synthetic ma mua o nā valve metala i nā kūlana corrosive, ʻo ka mua ma ke kūpaʻa corrosion, ka lua ma ke kaumaha ʻupena, a hilinaʻi ko lākou ikaika i ke ʻano, hoʻonohonoho, a me ka helu o nā fibers hoʻoikaika.(ma ka laulā, ʻoi aku ka nui o ka pākēneka o ka fiber, ʻoi aku ka nui o ka ikaika o ka composite.)

Ma nā noi Valve, ʻo ka nui o ke kaumaha o ka fiber ma kahi o 30% -40%, a ʻo kona kūpaʻa kemika e hoʻoholo nui ʻia e nā ʻano resin noumenon o ka fiber encapsulated i ka huahana hope.I loko o nā valve synthetic, ʻo ke kino polymer paʻa paha he Thermoplastic (e like me PVC-polyvinylidene fluoride, PPS-poly(p-phenylene sulfide), etc.) a i ʻole ka resin thermosetting (e like me ka polyester, ethylene a me ka epoxy, etc.) .

Mālama ka resin thermosetting i kona ikaika ma kahi kiʻekiʻe o ka wela ma mua o ka Thermoplastic resin (ʻo ia hoʻi, ʻoi aku ka kiʻekiʻe o ka wela wela wela o ka resin thermosetting).