ʻO nā paipu kila anti-corrosion he mea waiwai nui i ka ʻoihana hou a me ke kūkulu ʻana i nā ʻoihana. Hoʻoholo pololei ka maikaʻi o kā lākou kaʻina hana i ko lākou ola lawelawe a me ka hana palekana. Ke hoʻomau nei ka piʻi ʻana o nā koi kūpaʻa ʻino no nā paipu i loko o nā ʻāpana ʻaila, kinoea, kemika, a me ka ʻenekinia kūlanakauhale, ke hoʻomau nei ka ʻenehana hana no nā paipu kila anti-corrosion. E ʻimi ana kēia ʻatikala i ke kaʻina hana kumu no nā paipu kila anti-corrosion, e hāʻawi ana i ka nānā ʻana o ke kaʻina hana mai nā kaʻina kumu a hiki i nā kikoʻī ʻenehana koʻikoʻi.
I. Nā Kumu Kumu o nā Paipu kila Anti-corrosion
'O nā paipu kila kū'ē i ka pō'ino, 'o ia ho'i ka pāpa'i paipu kila ma'amau i uhi 'ia me ho'okahi a 'oi a'e paha o nā mea anti-corrosion ma o ke ka'ina hana kiko'ī, e hana ana i ka 'ano hui o "mea kumu ʻO ka pahuhopu nui o kēia kaʻina hana, ʻo ia ka hoʻopaʻa ʻana i nā waiwai mechanical o ka paipu kila (e like me ka compressive a me ka pale ʻana i ka hopena) ʻoiai ke kaohi pono ʻana i ka adhesion, ka like ʻana o ka mānoanoa, a me ka paʻa kemika o ka papa anti-corrosion e loaʻa ai ka pale - lōʻihi no ka paipu i nā kaiapuni paʻakikī (e like me ka haʻahaʻa kiʻekiʻe, ka paʻakai ikaika, ka paʻakai, a me ka alkali).
ʻO ka hana ʻana o ka paipu kila maʻamau e hilinaʻi ma ke kaʻina hana "rolling + welding"-ua wela ka pila kila -wili ʻia a i ʻole anu-olokaʻi ʻia i loko o kahi tubular blank, a laila wili ʻia a i hoʻopaʻa ʻia paha-arc e hana i kino paipu mau. Hoʻokumu ʻia ka ʻenehana anti-corrosion ma luna o kēia kumu, e hāʻawi ana i ke kūpaʻa ʻino hou i ka paipu kila ma o ka hoʻomaʻamaʻa ʻana i ka ʻili, ka uhi ʻana, a i ʻole ka pale ʻana.
II. Ka wehewehe kikoʻī o nā ʻanuʻu kaʻina hana hoʻokumu kumu
1. Hoʻomaʻamaʻa mua i ka paipu kumu: hoʻomaʻemaʻe a hoʻohua
ʻO ka ikaika o ka paʻa ma waena o ka -papa ʻinoʻino a me ka paipu kila e pili pono ana i ka maʻemaʻe a me ka ʻeleʻele o ka ʻili paipu kumu. Inā mau ke koena o ka aila, ka ʻōpala, a i ʻole ka unahi ma luna o ka ʻili, ʻaʻole e pili pono ka mea anti-corrosion, e alakaʻi ana i nā pilikia e like me ka puʻu a me ka ʻili. No laila, ʻo ka pretreatment ka hana koʻikoʻi mua i ka hana ʻana.
Loaʻa nā hana kikoʻī:
Wehe ʻeleʻele mīkini: Hoʻohana ʻia nā mea hoʻoheheʻe kiʻekiʻe a i ʻole sandblasting kiʻekiʻe kiʻekiʻe ka pana kila a i ʻole ke one quartz no ka hoʻopā ʻana i ka ʻili o ka paipu kila, ka wehe ʻana i ka unahi a me ka hoʻokumu ʻana i kahi ʻili ʻala like ʻole (e koi maʻamau i kahi hōʻailona heleuma o 40-100μm).
Hoʻomaʻemaʻe kemika: Hoʻohana ʻia nā mea hoʻoheheʻe kino (e like me ka acetone) a i ʻole ka waika -base (e like me ka phosphoric acid) e wehe i ke koena o ka momona a me ka ʻōpala liʻiliʻi, e hōʻoia ana i ka ʻole o ka ʻili i nā mea haumia ʻike ʻia.
Hoʻomaloʻo: Hoʻohana ʻia ka ea wela a i ʻole ka hoʻomaloʻo infrared no ka mālama ʻana i ka makū o ka ʻili o ka paipu kila i kahi pae haʻahaʻa loa (ka haʻahaʻa.<5%) to prevent bubbles during subsequent coating.
2. Ka ho'okumu 'ana i ka papa anti-corrosion: ho'ohālikelike i nā ka'ina hana nui
Ma muli o ke 'ano o ka mea pale -mea ho'oinoino a me ka ho'ohana 'ana, hiki ke ho'oka'awale 'ia ke ka'ina hana o nā paipu kila anti-corrosion i 'ekolu mau 'ao'ao nui:
(1) ʻEkolu-papa polyethylene (3PE) anti-corrosion - ka hana i hoʻohana nui ʻia.
ʻO ka 3PE anti-corrosion he ʻano hui pū ʻia o "fusion bonded epoxy powder (FBE) papa lalo + adhesive middle layer + polyethylene outer layer". Hoʻohui ia i ka paʻa kiʻekiʻe o ka pauka epoxy me ka pale ʻana i ke koʻikoʻi o ke kaiapuni o ka polyethylene, a kūpono ia no nā wahi paʻakikī e like me ke kanu ʻana i ka aila a me nā paipu kinoea. Penei ke kaʻina hana hoʻolili:
Ka uhi kumu: E hoʻoheheʻe electrostatically i ka pauda epoxy i hoʻokuʻu ʻia (ʻoi aʻe ka nui o ka ʻāpana i lalo a i ʻole like me 150 μm) ma luna o ka ʻili o ka paipu kila i hana mua ʻia, a laila hoʻoheheʻe a hoʻopaʻa ʻia i kahi mahana kiʻekiʻe o 200-230 degere e hana i kahi papa epoxy mānoanoa me ka mānoanoa o kahi 50-100μm;
ʻO ka uhi ʻana o ka papa waena: Hoʻomaʻamaʻa ʻia ka mea hoʻopili (e like me ka polyethylene copolymer i hoʻololi ʻia) i kahi moku i hoʻoheheʻe ʻia (e pili ana i 250 degere) e kahi extruder, a laila hoʻopili pono ʻia ma waho o ka papa epoxy ma o ka mold, me ka mānoanoa o kahi 170-250 μm;
Ka hoʻoheheʻe ʻia o ka papa waho: Heʻe ʻia ka polyethylene kiʻekiʻe (HDPE) a hoʻouhi ʻia ma o ka extruder e hana i kahi papa pale waho me ka mānoanoa o 1.8-3.7 mm (kū kūʻē i nā kukuna ultraviolet a me ka pōʻino mīkini).
(2) Epoxy coal tar anti -corrosion - kūpono no nā paipu anawaena li'ili'i a me waena{3}}
Hoʻohana kēia kaʻina hana i ka resin epoxy a me ka pitch tar lanahu ma ke ʻano he kumu kumu nui, a hana i kahi papa anti-corrosion ma ka ʻili o ka paipu kila ma ke kāhili ʻana a i ʻole ke kuʻu ʻana. ʻO kona mau hiʻohiʻona he haʻahaʻa haʻahaʻa, akā pili ia i ka mahana o ke kūkulu hale (pono e ʻoi aku ma mua o 5 degere) a me ka haʻahaʻa, a hoʻohana pinepine ʻia no ka hoʻolako wai a me nā paipu wai a i ʻole nā hana manawa.
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No nā paipu ha'aha'a -e lawe ana i nā mea ho'opō'ino 'ole (e like me ka wai inu), hiki ke ho'ohana 'ia ke 'ano o ka pulupulu centrifugal no ka ho'opili like 'ana i ka momi sima (wai-cement ratio 0.4-0.5) i ka paia o loko o ka paipu kila no ka hana 'ana i ka papalina me ka mānoanoa o 10- mānoanoa. ʻO kēia kaʻina hana he haʻahaʻa haʻahaʻa a hoʻopaʻa paʻa, akā nāwaliwali ke kūpaʻa i ka corrosion kemika.
3. Mahope -Ka Ho'āʻana a me ka Hoʻāʻo ʻana: E hōʻoia ana i ka hoʻokumu ʻana i ka maikaʻi
Ma hope o ka ho'okumu 'ia 'ana, e ho'omalu 'ia ka maika'i o ka 'a'e -
Ka Mānoanoa Ho'āʻo: E ana i ka mānoanoa o kēlā me kēia papa me ka mānoanoa a kani ultrasonic paha (e laʻa, no ka 3PE anti-corrosion coating, ʻoi aku ka nui o ka papa epoxy ma mua o 80μm, a ʻoi aku ka nui o ka papa polyethylene ma mua o 2mm).
Ho'āʻo Hoʻopili: E hōʻoia i ka ikaika paʻa ma waena o ka uhi -corrosion a me ka paipu kila me ka hoʻohana ʻana i ke ʻano -hatch a huki -off (e koi maʻamau i ʻoi aku ma mua a i ʻole like me 5MPa).
ʻIke Uila Uila: E nānā i ka ʻili o ka ʻili -corrosion me ka -frequency kiʻekiʻe, kiʻekiʻe-ʻeleu uila no ka ʻike ʻana i nā puka pine a i ʻole ka pōʻino (ʻoi aku ka nui o ka leak point voltage ma mua o 25kV).
Nānā Hiʻona: E hōʻoia i ka ʻole o nā hemahema e like me nā ʻōhū, nā māwae, a me nā sags, e hōʻoia ana i ka maʻemaʻe a me ka ʻili.
III. Ka Hana Hana Hou a me nā ʻano o ka wā e hiki mai ana
Me ka piʻi nui ʻana o ka noi ʻoihana, ke ulu nei ke kaʻina hana no nā paipu kila kū i ka ʻino -a hiki i ka ʻoi aku ka maikaʻi, ka ʻenehana naʻauao, a me ke aloha kaiapuni:
Hoʻolaha i ka hana mua: Hoʻohui nā laina hana hoʻomau i ka "wili paipu kila, hoʻomaʻamaʻa mua, a me - ka uhi ʻana i ka corrosion," e hoʻopōkole ana i nā pōʻai hana a me ka hoʻomaikaʻi ʻana i ke kūlike;
Ka hoʻomohala ʻana i nā mea kūʻē -corrosion hou: ʻO nā noi e like me ka nano-modified epoxy powder and graphene-enhanced polyethylene e hoʻonui i ke ola ʻino (a hiki i 50 makahiki a ʻoi aku paha);
Ka ʻimi ʻana i nā kaʻina hana ʻōmaʻomaʻo: ʻO ka hoʻemi ʻana i ka hoʻohana ʻana i nā mea hoʻoheheʻe kūlohelohe (e laʻa, ka hoʻololi ʻana i nā mea hoʻoheheʻe kuʻuna-me nā uhi epoxy ma muli o ka wai) e hōʻemi ana i nā hoʻokuʻu VOC.
Ka hopena
ʻO ke kaʻina hana no nā paipu kila kū i ka ʻino -ka hopena o ka hui ʻana o ka ʻepekema waiwai, ka hana ʻenehana, a me ka ʻenekinia kemika. Mai ka hoʻomaʻamaʻa mua ʻana i ka paipu kumu a hiki i ka hoʻohana pono ʻana i ka uhi pale -corrosion, pono kēlā me kēia ʻanuʻu i ka mana ikaika o nā ʻāpana a me nā kikoʻī. Me ka hoʻomau ʻana o ka ʻenehana, ʻaʻole e hoʻokō wale nā paipu kila kūpaʻa i ka wā e hiki mai ana i ke koi kumu o ka pale ʻana i ka corrosion akā loaʻa pū kekahi i nā holomua i ka nānā ʻana naʻauao (e like me ke kūkulu ʻia-i loko o nā mea ʻike corrosion) a me ka hoʻolālā māmā, e hāʻawi ana i ke kākoʻo hilinaʻi no ke kūkulu ʻana i nā ʻōnaehana honua.
