Spiral steel pipe ipipi hombe-diameter simbi inogadzirwa kubva kumakoiri esimbi kuburikidza nekuita spiral kugadzira. Inoshandiswa zvakanyanya mumapurojekiti epombi yekufambisa mvura muzvikamu zveoiri, gasi, makemikari, uye mvura. Maitiro ekugadzira anonyanya kusanganisira nhanho dzakakosha senge gadziriro yezvakagadzirwa, kuyera mitsetse uye kuveura, kuumba, welding, weld seam kurapwa, uye kuyedza uye kuongororwa kwemhando. Nhanho imwe neimwe inobata zvakananga kunaka uye kushanda kwechigadzirwa chekupedzisira.
1. Raw Material Kugadzirira
The primary raw material for spiral steel pombi inopisa-yakakungurutswa kana kutonhora{1}}makoiri esimbi akakungurutswa, anogaro gadzirwa kubva ku carbon structural steels seQ235B neQ345B, kana yakaderera{4}}alloy high{5}}simbi yakasimba. Isati yagadzirwa, macoil esimbi anoongororwa kwakasimba kwemhando, kusanganisira kuongororwa kwemakemikari, kuyedzwa kwezvivakwa zvemuchina (senge simba rekusimba uye kurebesa), uye kuongororwa kwechirema chepamusoro (sekutsemuka, chiyero, uye kupeta) kuve nechokwadi chekuteedzera zviyero zvakakodzera (seGB/T 9711 uye API 5L).
2. Strip Leveling uye Kuveura
Nekuti tambo yacho inogona kukotama kana kunyungudika panguva yekufambisa kana kukunguruka, inofanirwa kukwenenzverwa munhanho kuti ive nechokwadi chekuti tambo inosangana nezvinodiwa zvekuumba. Zvadaro, zvichienderana nekutsanangurwa kwepombi ye spiral simbi, tambo inogerwa kusvika paurefu hwaidiwa uchishandisa shear inobhururuka kana denderedzwa shear kuti ive nechokwadi chekuenderera panguva yekuzogadzira.
3. Spiral Kuumba
Kugadzira ndiyo nhanho yepakati mu spiral simbi pombi kugadzirwa. Mutsetse wacho unobatanidzwa zvishoma nezvishoma kuita spiral chubhu nemuchina wekugadzira (kazhinji uri kunze kana nemukati unodzorwa roller kugadzira muchina) panguva yekuenderera mberi welding. Ma roller emuchina wekugadzira anogadziridzwa pane imwe kona (kazhinji 1.5 dhigirii kusvika 3 dhigirii) kuti zvishoma nezvishoma aunze mitsetse yemitsetse pamwe chete uye kugadzira kutenderera kwakagadzikana. Munguva yekugadzira, tension ye strip, kumhanya, uye roller pressure inofanirwa kunyatsodzorwa kuti ive nechokwadi chekutenderera kwechubhu, kutwasanuka, uye yunifomu weld gap.
4. Welding Process
Spiral simbi mapaipi anowanzo kusungirirwa achishandisa submerged arc welding (SAW), iyo yakakamurwa kuita matanho maviri: welding yemukati uye yekunze welding.
Welding yemukati: Single-waya kana mapatya-waya SAW inoshandiswa kupinza mudzi wepombi mukati mepombi kuitira kuti papinde uye kupinda.
Welding yekunze: Multi-waya SAW (kazhinji twin kana katatu waya) inoshandiswa kunze kuti inatsiridze kushanda zvakanaka kwewelding uye kuve nechokwadi chekusimba nekutaridzika.
Welding parameters (sezvino, voltage, uye kumhanya) inofanirwa kunyatso gadziridzwa zvinoenderana nekukora kwestrip uye zvinhu kudzivirira hurema hwakadai seporosity, slag inclusions, uye kushomeka kwefusion. Mamwe mapombi-ekumagumo espiral steel anoshandisawo pre{{2}welding + finishing process, kutanga achishandisa-frequency pre{5}}welding kuchengetedza weld, zvichiteverwa nearc welding yakanyura mumvura yekupedzisira.
5. Weld Seam Treatment
Mushure mekugadzira, weld seam inoda kupedzisa uye kuongororwa:
Weld seam grinding: Izvi zvinobvisa weld yakawandisa, inogadzira shanduko yakatsetseka pakati peiyo weld neiyo base zvinhu, uye inoderedza kushushikana kwekushushikana. Ultrasonic Testing (UT): Inotarisa welds yehurema hwemukati (zvakadai sepores uye kuputika).
X-ray Testing (RT): Inoedza-isingakuvadzi yenzvimbo dzakakosha kuona kuti weld quality inoenderana nezviyero.
6. Kuwedzera uye Kururamisa
Kubvisa kushushikana kwewelding uye kunatsiridza kurongeka kwedimensional, spiral simbi pombi dzinowanzo wedzera (hydraulic kana mechanic kuwedzera kwepombi muviri). Ivo vanobva vatwasanudzwa kuti vaone kuti vasangana nezvinodiwa zvekuiswa kweprojekiti.
7. Kupedzisa Kugadziriswa uye Kuongorora
Zvichienderana nezvinodiwa nemutengi, migumo yespiral simbi mapaipi angangoda beveling (yewelding) kana flattening (yeflange yekubatanidza). Chekupedzisira, mapaipi anoongororwa zvakanyanya kunaka, kusanganisira:
Dimensional kuongorora (kunze kwedhayamita, ukobvu hwemadziro, uye ovality);
Kuedza kudzvanya (mvura kana mhepo yekumanikidza kuyedzwa kuti uone kumanikidzwa kuramba);
Anti-kurapwa kwecorrosion (senge epoxy poda coating kana 3PE coating kuti inatsiridza kusaora).
8. Kunyora uye Kutumira
Mapombi esimbi anokwenenzverwa akanyorwa zvinoenderana nezviyero (senge zvinhu, zvakatemwa, uye nhamba yekugadzira batch) uye akaputirwa kana kurongedzerwa asati atumirwa kunzvimbo yeprojekiti kuti igadzirwe uye ishandiswe.
Mhedziso
Maitiro ekugadzira espiral simbi mapaipi anosanganisira akati wandei nhanho, uye kuomarara kwemhando yekudzora kunodiwa kubva kune yakabikwa kusvika kune yapera chigadzirwa. Kufambira mberi kweruzivo rwechizvino-zvino, kusanganisira kushandisa mafomati otomatiki, welding yakangwara, uye{1}}kusingakuvadzi kuedza, zvakawedzera kunatsa kugadzirwa nekuvimbika kwepombi dzespiral steel, zvichiita kuti dzive chinhu chakakosha muinjiniya yepombi yemazuva ano.
