1.Kuvandudzwa kwe mechanical peeling nzira ye3PE anti-corrosion coating
① Tsvaga kana gadzira zvirinani zvekudziisa kutsiva gasi rekucheka tochi. Midziyo yekudziisa inofanira kukwanisa kuona kuti nzvimbo yemoto yekupfapfaidza yakakura zvakakwana kupisa chikamu chese chekuputira kuti chibviswe panguva imwe chete, uye panguva imwechete ive nechokwadi chekuti tembiricha yemurazvo yakakwira kupfuura 200 ° C.
② Wana kana kugadzira chirinani chokukurura chombo panzvimbo pefoshoro yakati sandara kana sando yemaoko. Chishandiso chekupenengura chinofanirwa kukwanisa kubatirana zvakanaka nechekunze kwepombi, edza kukwenya iyo inopisa anti-corrosion coating pamusoro pekunze kwepombi panguva imwe chete, uye ive nechokwadi chekuti iyo anti-corrosion coating inosungirirwa pakupepeta. chishandiso chiri nyore kuchenesa.

2.Electrochemical peeling ye3PE anti-corrosion coating
Injiniya dhizaini nevashandi vekuvaka vanogona kuongorora zvikonzero zvekuora kwekunze kwegasi rakavigwa mapaipi uye kukanganiswa kwe3PE anti-corrosion coating, uye kutsvaga nzira nyowani dzekuparadza nekubvisa iyo anti-corrosion coating.
(1) Zvinokonzera kunze kwekuora kwepombi uye kuongororwa kwe3PE anti-corrosion coating defects.
① Kurasika iko zvino kwemapaipi akavigwa
Kurasika ikozvino inguva inogadzirwa nekurudziro yemamiriro ekunze, uye kugona kwayo kunowanzo kuyerwa neiyo polarization probe nzira [1]. Yakarasika ikozvino ine hukuru hwekuora uye njodzi, yakawanda uye yakasimba randomness, kunyanya kuvapo kwekuchinjana ikozvino kunogona kukonzera depolarization ye electrode pamusoro uye kuwedzera kuparara kwepombi. Kupindira kwe AC kunogona kukurumidzira kuchembera kweiyo anti-corrosion layer, kukonzeresa kuti anti-corrosion layer ibviswe, kukanganisa kushanda kwakajairwa kwecathodic kuchengetedza system, kuderedza kushanda kwazvino kwechibairo anode, uye kuita kuti pombi isawane. inoshanda anti-corrosion kudzivirira.
② Kuora kwenzvimbo yevhu yemapaipi akavigwa

Kufurira kukuru kwevhu rakatenderedza pakuora kwepombi dzegasi dzakavigwa ndeidzi: a. Kufurira kwemabhatiri ekutanga. Galvanic masero akaumbwa ne electrochemical inhomogeneity yesimbi uye media ndicho chikonzero chakakosha chekuora mumapaipi akavigwa. b. Kufurira kwehuwandu hwemvura. Mvura yemvura ine simba guru pakuora kwemapaipi egasi, uye mvura iri muvhu ndiyo mamiriro anodiwa eionization uye kupera kwe electrolyte yevhu. c. Mhedzisiro yeresistive. Iyo idiki resistivity yevhu, kusimba kwekuora kune mapaipi esimbi. d. Mhedzisiro ye acidity. Mapaipi anosvibiswa nyore nyore muvhu rine acidic. Kana ivhu riine akawanda organic acids, kunyangwe iyo pH kukosha iri pedyo nekusarerekera, inoparadza zvakanyanya. e. Mhedzisiro yemunyu. Iyo munyu muvhu haingoite basa mukuita conductive yevhu corrosion, asi inobatanidzwawo mukuita kwemakemikari. Batiri rekuisa munyu rakasiyana-siyana rinoumbwa nekusangana pakati pepombi yegasi nevhu rine munyu wakasiyana-siyana inokonzera kuora kwepombi iri panzvimbo ine munyu wakawanda uye inowedzera kukora kwenzvimbo. f. Mhedzisiro ye porosity. Kukura kwevhu porosity kunobatsira kupindira kweokisijeni nekuchengetedzwa kwemvura muvhu, uye inokurudzira kuitika kwekuora.

③ Kukanganisa kuongororwa kwe3PE anti-corrosion coating adhesion [5]
Chinhu chakakosha chinokanganisa kunamatira pakati pe3PE anti-corrosion coating uye pombi yesimbi ndiyo yemhando yekurapa kwepamusoro uye kusvibiswa kwepasi kwepombi yesimbi. a. Kumusoro kwakanyorova. Pamusoro pepombi yesimbi mushure mekusvibiswa yakasvibiswa nemvura uye guruva, iyo inowanzoita ngura inoyangarara, iyo inokanganisa kunamatira pakati pe sintered epoxy powder uye pamusoro pepombi yesimbi. b. Kusvibiswa kweguruva. Guruva rakaoma mumhepo rinowira zvakananga pamusoro pepombi yesimbi inobviswa ngura, kana kuti inowira pamudziyo wekutakura uye inosvibisa zvisina kunanga pamusoro pepombi yesimbi, iyo inogonawo kukonzera kuderera kwekunamatira. c. Pores uye bubbles. Mapores anokonzerwa nehunyoro aripo zvakanyanya pamusoro uye mukati meiyo HDPE layer, uye saizi uye kugovera kwakafanana, izvo zvinokanganisa kunamatira.
(2) Kurudziro yekubvisa electrochemical ye3PE anti-corrosion coatings
Kuburikidza nekuongorora zvikonzero zvekuora kwekunze kwegasi rakavigwa mapaipi uye kukanganisa kwekunamatira kwe3PE anti-corrosion coatings, kugadzirwa kwechigadzirwa chinoenderana nemaitiro emagetsi inzira yakanaka yekukurumidza kugadzirisa dambudziko riripo, uye hapana mudziyo wakadaro. pamusika parizvino.
Pachikonzero chekufungisisa zvizere zvemuviri we 3PE anti-corrosion coating, nekudzidza maitiro ekuora kwevhu uye kuburikidza nemiedzo, nzira yekuora ine chiyero chekuora zvakanyanya kudarika iyo ivhu inogadzirwa. Shandisa zvine mwero kemikari kuita kuti ugadzire mamwe mamiriro ekunze, kuitira kuti iyo 3PE anti-corrosion coating inobata nemakemikari reagents electrochemically, nekudaro ichiparadza kunamatira kwayo nepombi kana kunyungudutsa zvakananga anti-corrosion coating.

3.Miniaturization yezvino mikuru mikuru mikuru

PetroChina West-East Gasi Pipeline Kambani yakagadzira yakakosha michina yekugadziridza kwechimbichimbi kweoiri uye gasi chaiwo mapaipi akareba - hombe-dhayamita pombi yekunze inorwisa-corrosion layer yekubvisa muchina. Midziyo inogadzirisa dambudziko rekuti anti-corrosion layer inonetsa kuburitsa mukugadziriswa kwekukurumidzira kwemapaipi makuru emafuta uye gasi, izvo zvinokanganisa kushanda kwechimbichimbi kugadzirisa. Iyo inokambaira-mhando hombe-dhayamita pombi yekunze inodzivirira-corrosion layer yekubvisa muchina inoshandisa mota sesimba rekubvisa kutyaira roller bhurashi kuti itenderere kubvisa anti-corrosion layer yakaputirwa pamadziro ekunze, uye inofamba ichitevedza denderedzwa pamusoro. yepombi inodzivirira kuora kwepaipi kuti ipedze kupepeta kwepaipi yekudzivirira ngura. Welding mashandiro anopa mamiriro akanaka. Kana iyi yakakura-yakakura michina yakashongedzwa, yakakodzera kunze kwediki-dhayamita mapaipi uye yakakurumbira, ichave nehupfumi uye hwemagariro mabhenefiti ekugadzirisa gasi emudhorobha. Maitiro ekudzikisa iyo inokambaira-mhando hombe-dhayamita pombi yekunze anti-corrosion layer stripper inzira yakanaka yekutsvagisa.