Kunezindlela ezintathu eziyinhloko zokuhlonza amapayipi ashiselwe namapayipi angenamthungo (smls):

1. Indlela ye-Metallographic

Indlela ye-Metallographic ingenye yezindlela eziyinhloko zokuhlukanisa amapayipi ashiselwe namapayipi angenamthungo.Ipayipi elishiselwe ukumelana ne-high-frequency resistance (ERW) ayifaki izinto zokushisela, ngakho-ke i-weld seam epayipini lensimbi elishiselwe lincane kakhulu, futhi i-weld seam ayikwazi ukubonakala ngokucacile uma indlela yokugaya kanye nokugqwala isetshenziswa.Uma ipayipi lensimbi elishiselwe ukumelana ne-high-frequency lishiselwe ngaphandle kokwelashwa kokushisa, ukwakheka komthungo we-weld kuzoba ngokuyisisekelo kuhluke ezintweni eziwumzali zepayipi lensimbi.Ngalesi sikhathi, indlela ye-metallographic ingasetshenziswa ukuhlukanisa ipayipi lensimbi elishiselwe epayipini lensimbi elingenamthungo.Enqubweni yokuhlonza amapayipi amabili ensimbi, kuyadingeka ukusika isampula encane ngobude nobubanzi obungama-40 mm endaweni yokushisela, ukugaya kanzima, ukugaya kahle nokupholisha phezu kwayo, bese ubheka isakhiwo ngaphansi kwe-metallographic. ngesibonakhulu.Amapayipi ensimbi ashiselwe kanye namapayipi ensimbi angenamthungo angahlukaniswa ngokunembile lapho i-ferrite ne-widmansite, isisekelo sensimbi ne-weld zone microstructures zibonwa.

2. Indlela yokugqwala

Enqubweni yokusebenzisa indlela yokugqwala ukuhlonza amapayipi ashiselwe namapayipi angenamthungo, umthungo oshiselwe wepayipi lensimbi elicutshunguliwe kufanele upholishwe.Ngemuva kokuthi ukugaya kuqediwe, iminonjana yokugaya kufanele ibonakale, bese ubuso bokugcina bomthungo ohlanganisiwe kufanele bucoliswe nge-sandpaper.Futhi sebenzisa isisombululo sotshwala esingu-5% se-nitric acid ukwelapha ubuso bokuphela.Uma kukhona i-weld ecacile, ingafakazela ukuthi ipayipi yensimbi iyipayipi yensimbi ehlanganisiwe.Nokho, ubuso bokugcina bepayipi lensimbi elingenamthungo alinawo umehluko osobala ngemva kokugqwala.

Izakhiwo zamapayipi ashiselwe
Ipayipi yensimbi ehlanganisiwe inezindawo ezilandelayo ngenxa ye-welding high-frequency, rolling ebandayo nezinye izinqubo.
Okokuqala, umsebenzi wokulondoloza ukushisa muhle.Ukulahlekelwa ukushisa kwamapayipi ensimbi ashiselwe kuncane kakhulu, kungama-25% kuphela, okungagcini nje ngokuhambisa izinto zokuhamba, kodwa futhi kunciphisa izindleko.
Okwesibili, inokumelana namanzi nokugqwala.Enkambweni yokwakha ubunjiniyela, akudingekile ukusetha imisele yamapayipi ngokwehlukana.
Ingangcwatshwa ngokuqondile emhlabathini noma ngaphansi kwamanzi, ngaleyo ndlela inciphise ubunzima bokwakhiwa kwephrojekthi.
Okwesithathu, inokumelana nomthelela.Ngisho nasendaweni yokushisa ephansi, ipayipi yensimbi ngeke yonakaliswe, ngakho ukusebenza kwayo kunezinzuzo ezithile.

Izakhiwo zamapayipi angenamthungo
Ngenxa yamandla aqinile wensimbi yepayipi lensimbi engenamthungo, ikhono layo lokumelana nomonakalo linamandla, futhi linesiteshi esingenalutho, ngakho-ke ingakwazi ukuthutha ngokuphumelelayo uketshezi.Ipayipi lensimbi, futhi ukuqina kwalo kukhulu kakhulu.Ngakho-ke, umthwalo omningi ongawuthwala ipayipi lensimbi engenamthungo, lingasetshenziswa kabanzi kumaphrojekthi anezidingo eziphakeme zokwakha.

3. Hlukanisa ngokwenqubo

Enqubweni yokuhlonza amapayipi ashiselwe kanye namapayipi angenamthungo ngokuya ngenqubo, amapayipi ensimbi ashiselwe ashiselwe ngokuvumelana nokugoqa okubandayo, ukukhishwa nezinye izinqubo.Lapho ipayipi lensimbi lishiselwa, lizokwenza ipayipi elishiselwe elizungezayo kanye nepayipi elithungelwe ngomthungo oqondile, futhi lizokwenza ipayipi lensimbi eliyindilinga, ipayipi lensimbi eliyisikwele, ipayipi lensimbi eliyisiyingi, ipayipi lensimbi elingunxantathu, ipayipi lensimbi eliyi-hexagonal, ipayipi lensimbi le-rhombus, ipayipi lensimbi eliyi-octagonal, ngisho nepayipi lensimbi eliyinkimbinkimbi.

Ngamafuphi, izinqubo ezihlukene zizokwakha amapayipi ensimbi anobunjwa obuhlukene, ukuze amapayipi ensimbi ashiselwe namapayipi ensimbi angenamthungo akwazi ukuhlukaniswa ngokucacile.Kodwa-ke, ohlelweni lokuhlonza amapayipi ensimbi angenamthungo ngokwenqubo, kusekelwe kakhulu ezindleleni zokwelashwa eziginqikayo ezishisayo nezibandayo.Ngokuyinhloko kunezinhlobo ezimbili zamapayipi ensimbi angenamthungo, ahlukaniswe amapayipi ensimbi angenamthungo agingqiwe ashisayo kanye namapayipi ensimbi angenamthungo agoqelwe ngokubanda.Amapayipi ensimbi angenamthungo agingqiwe ashisayo akhiwa ngokubhoboza, ukugingqika nezinye izinqubo, ikakhulukazi amapayipi ensimbi anobubanzi obukhulu futhi awugqinsi angenamthungo ashiselwa yile nqubo;amapayipi adonswa abandayo akhiwa izikhala zamashubhu abandayo, futhi amandla ezinto ezibonakalayo aphansi, kodwa izindawo zayo zokulawula zangaphandle nezangaphakathi zibushelelezi.

4. Hlela ngokusetshenziswa

Amapayipi ensimbi ashiselwe anamandla okugoba aphezulu namandla okugoqa kanye namandla okuthwala umthwalo, ngakho ngokuvamile asetshenziswa kabanzi ekwenzeni izingxenye zemishini.Ngokwesibonelo, amapayipi okubhola uwoyela, imishayo yokushayela imoto, amafreyimu amabhayisikili, nezikafula zensimbi ezisetshenziswa ekwakheni izakhiwo konke kwenziwa ngamapayipi ensimbi ashiselwe.Nokho, amapayipi ensimbi angenamthungo angasetshenziswa njengamapayipi okudlulisa uketshezi ngoba anezingxenye ezingenalutho nemicu emide yensimbi engenamithungo eduze kwawo.Isibonelo, ingasetshenziswa njengepayipi lokuthutha uwoyela, igesi yemvelo, igesi, amanzi, njll. Ngaphezu kwalokho, amandla okugoba epayipi lensimbi engenamthungo mancane kakhulu, ngakho-ke ngokuvamile asetshenziswa kakhulu kumapayipi esitimu esishisayo aphansi futhi. ama-boilers anengcindezi ephakathi, amapayipi amanzi abilayo kanye namapayipi esitimu ashisa kakhulu ama-boilers esitimela.Ngamafuphi, ngokuhlukaniswa kokusetshenziswa, singakwazi ukuhlukanisa ngokucacile amapayipi ensimbi ashiselwe kanye namapayipi ensimbi angenamthungo.