Amaphutha ajwayelekile kanye nokuvimbela ipayipi elishiselwe

Amaphutha akhiqizwa ekukhiqizweni kwamapayipi ashiselwe imvamisa ephezulu(ipayipi le-astm a53 grade b erw) kwesinye isikhathi abadalwa yimbangela eyodwa, kodwa ngokuvamile aba umphumela wenhlanganisela yezinto eziningi.Ukukhubazeka kwe-Welding kungase futhi kubangelwa ezinye izizathu ezingaphandle kwendawo yokushisela, ngakho-ke izici eziningi kufanele zicatshangelwe ngokucophelela ngamaphutha , Inkinga ingaxazululwa kuphela ngokuhlaziya ngokucophelela izizathu.

news

Okufakiwe

Indlela yokwakheka kweziphambeko zokufakwa iwukuthi i-oxide yensimbi ayikhishwa ngensimbi encibilikisiwe, kodwa ihlanganiswe endaweni yokushisela.

Lawa ma-oxide ensimbi ngokuvamile akhiwa phezu kwensimbi encibilikisiwe nge-engeli engu-V.Lapho i-strip esondela ijubane elisondelayo liphansi kunejubane lokuncibilika, futhi isivinini sokuncibilika siphezulu kunejubane lokuphuma kwensimbi encibilikisiwe, i-apex yokuvula okumise okwe-V izokwakha insimbi encibilikisiwe futhi Ukufakwa kwama-oxide ensimbi angeke kube ngokuphelele. kukhishwa ngemuva kwe-extrusion evamile.Ingaphezulu lekhambi lensimbi elihlanzekile lifakwe lawa ma-oxide ensimbi, ngaleyo ndlela kwakheka amaphutha enqubweni yokubumba nokushisela.

Lesi sici sizokwenza ukuthi i-weld iqhekeke ngemva kokwenza isicaba, futhi ukufakwa kuzobonakala ekuqhekekeni kwe-weld.Lesi sici sikhona ngezindlela ezahlukene, kwesinye isikhathi eyodwa, kwesinye isikhathi iketango.

Izinyathelo zokuvimbela ukukhubazeka kokufakwa:

1. I-engeli emise okwe-V ilawulwa ngokuqinile phakathi kuka-4 ~ 6
2. Ukulungiswa kweyunithi ukuze kuqinisekiswe ubude be-engeli yokuvula ezinzile
3. Isilinganiso se-Mn/Si ekwakhekeni kwamakhemikhali komugqa sikhulu kuno-8:1
4. Yehlisa i-oxidation yendawo yokushisela

I-Pre-arc

Lolu hlobo lwesici empeleni alukho ukuhlanganiswa okwanele okubangelwa i-pre-arc.Ngokuvamile, isikali se-burr noma se-oxide nokugqwala emaphethelweni omugqa kwakha ibhuloho ngaphambi kwe-engeli engu-V, okubangela ukuthi isekethe emfushane ibangele ukuthi i-current igxume futhi ikhiqize ukwenzeka kwe-pre-arc, kanye ne-short-circuit. yamanje ishintsha isiqondiso samanje futhi inciphisa Ukushisa ekhoneni lika-V kuncishisiwe.

Ukukhubazeka okubangelwa ukushunqika ngokushesha, ukuphuka kwendiza okukhanyayo nokuyisicaba kungabonakala ekuqhekekeni kwe-weld, kwesinye isikhathi asikho isikali se-strip edge burr noma isikali se-oxide, ukugqwala, njll., kodwa i-V angle encane kakhulu noma i-voltage ephezulu kakhulu izodala i-arc phenomenon , Lokhu kubangelwa ukukhishwa kwamandla kagesi aphezulu emaphethelweni omugqa.

Izinyathelo zokuvimbela izinkinga zangaphambi kwe-arc:

1. I-engeli emise okwe-V ilawulwa ngokuqinile phakathi kuka-4 ~ 6
2. Unqenqema lwe-strip luhlanzekile, lubushelelezi futhi alunawo ama-burrs
3. Gcina amanzi okupholisa ehlanzekile, lawula ukugeleza kwamanzi okupholisa, bese uzama ukugwema i-engeli engu-V.

Ukuhlanganisa okunganele

Lesi sici sibangelwa ukuthi imiphetho yemigqa emibili iyashiswa kodwa ayihlanganisiwe ngokuphelele, futhi i-weld enhle akwakhiwa.Isizathu esiqondile sokuhlanganiswa okunganele ukushisa okunganele ngesikhathi sokushisela.Kunezici eziningi ezihlobene eziholela ekushiseni okunganele kwe-welding, njengamandla we-high-frequency.Okukhiphayo, i-engeli engu-V nobude bokushisisa, indawo yebha kazibuthe, izimo zokusebenza nokupholisa kwebha kazibuthe, usayizi wekhoyili yokungeniswa, isivinini sokushisela, njll., lezi zici ziyathonya enye nenye, kanye nomphumela ohlanganisiwe. kuholela kumaphutha anjalo.

Izinyathelo zokuvimbela izinkinga ezinganele zokuhlanganisa:

1. Ukumataniswa kokushisa kokufakwayo kwe-welding nesivinini sokushisela, izici zezinto ezingavuthiwe zeshubhu elingenalutho
2. Isimo sokusebenza sebha kazibuthe
3. I-engeli ye-V nobude bokushisisa
4. Imininingwane yekhoyili yokungeniswa

Ukuzinza kanye nesimo esihle semishini yizimo eziyisisekelo zokugwema amaphutha.Ukuqedela ukuqoshwa nokuhlaziywa kwemingcele yenqubo kungandisa ikhwalithi yamapayipi.


Isikhathi sokuthumela: Jul-06-2021