Ifomu elimele le-LSAW steel pipe surface

Ipayipi yensimbi ye-LSAWkwakheka ungqimba olungaphezulu lokuzinza okuncane kakhulu nokuqinile kwefilimu ye-oxide ecebile nge-chromium (ifilimu yokuvikela), ukuvimbela ukungena okuqhubekayo kwama-athomu omoya-mpilo, ku-oxidation, kanye nokufinyelela ekhonweni lokulwa nokubola.Uma kunesizathu esithile, le filimu kwaba ukubhujiswa njalo, umoya noma umoya-mpilo liquid noma ama-athomu ensimbi uzoqhubeka ukungena athomu yensimbi aphume ukuhlaziywa njalo ukwakheka okuxekethile yensimbi oxide, ukugqwala surface metal kuyoba njalo .Le filimu engaphezulu ngendlela yomonakalo omkhulu, ovame kakhulu ekuphileni kwansuku zonke ifinyezwa kanje:

1 LSAW umkhiqizo wediphozithi yepayipi yensimbi nezinye izinsimbi eziqukethe izinhlayiya zothuli noma izinto zensimbi ezihlukahlukene emoyeni oswakeme, nezinsimbi zensimbi engagqwali phakathi kwe-condensate, kokubili ndawonye kube ibhethri elincane, okubangela ukusabela kwamakhemikhali kagesi, ifilimu yokuvikela ilimele, ukuyibiza ngokuthi ukugqwala kwe-electrochemical.

2 Ipayipi eliqondile elinamathela phezu kwejusi ye-organic (njengemifino, isobho, isikhwehlela, njll.), umoya-mpilo endaweni yamanzi, wenza ama-asidi aphilayo, ama-asidi e-organic ubude ukugqwala kwezindawo zensimbi.

3 LSAW ipayipi lensimbi elinamathelayo eline-asidi, i-alkali, usawoti (njenge-lye yokuhlobisa odongeni, i-lime splash), okubangela ukugqwala kwendawo.

4 emoyeni ongcolile (oqukethe inani elikhulu le-sulfide, i-carbon dioxide, i-nitrogen oxide atmosphere), indawo yamanzi ahlanganisiwe ukuze enze i-sulfuric acid, i-nitric acid, i-acetic acid solution point, ibangela ukugqwala kwamakhemikhali.

Uhla Lokusebenza lwe-LSAW

.I-LSAW yensimbi ububanzi bepayipi ebangeni eliphakathi kuka-406 ~ 1600mm, ezimweni ezingavamile nakakhulu, isilinganiso sodonga oluwugqinsi nobubanzi obungaba ngu-0.06 kuya ku-0.08.Ubuchwepheshe besimanje bangaphandle bungakhiqiza ipayipi kuze kufike ku-100mm odongeni ukushuba kwepayipi.

Ukukhiqizwa kwemboni yensimbi yensimbi noma ipayipi yensimbi ye-LSAW kuphela izindlela ezimbalwa, umehluko wesimiso yindlela yokwenza ipayipi yensimbi, ipayipi lensimbi ngemva kokwenza inqubo yokulandelela ngokuyisisekelo iyafana.Izimiso zendlela yokwenza i-weld incike ekusatshalalisweni kwensimbi, ngokuya ngokusatshalaliswa kwamapayipi ukushisela amafomu amabili ayisisekelo: umthungo oqondile kanye nepayipi lensimbi elivunguzayo.Okuhambisana nalokhu, ukukhiqizwa kwamapayipi okuthunga okuqondile ashiselwe ekukhiqizeni nasekukhiqizeni ipayipi lomthungo elivunguzayo.Umthungo oqondile kanye nepayipi lensimbi ye-spiral seam indlela esetshenziswa kakhulu i-arc welding engaphansi kwamanzi (SAW), ikhwalithi yayo enhle, ukukhiqiza okuphezulu, ubuchwepheshe buvuthiwe futhi buzinzile.Njengamanje, ipayipi lensimbi lomthungo eliqondile elisetshenziswa kabanzi phesheya kwezilwandle ezilandelayo: ezokuthutha zasemoyeni nezolwandle, amapayipi amanzi nesiqu sikawoyela;amakhemikhali okuthutha kanye nemikhiqizo yamakhemikhali yeshubhu yensimbi engagqwali;isakhiwo sezimboni zasolwandle ngeshubhu;ukukhiqizwa kukabhoyili kanye neshubhu lesakhiwo sepayipi lenhloso ekhethekile.