Ipayipi elingenamthungo elinobubanzi obukhuluinqubo yokukhiqiza ukubumba ezishisayo

Inqubo yokukhiqiza eshisayo, ehlanganisa ukukhishwa kwe-hot-rolled kanye nokushisa okushisayo kwezindlela ezimbili ezinobubanzi obukhulu, okubandakanya ukukhiqizwa kwamapayipi ayinhlanganisela angenamthungo.

I-Rolling iyindlela yendabuko yokulungiselela ipayipi lensimbi engenamthungo enobubanzi obukhulu.I-Hot rolling in substance ingcindezi yokushisela, uma i-deformation inkulu ngokwanele, ingcindezi ekhishwa umqulu wensimbi ingalimaza ubuso befilimu ye-oxide, indawo ye-athomu ehlangene, ukuze izindawo ezimbili zihlanganiswe ndawonye.Ukungalungi kwe-Rolling yilezi:

Izinzuzo zokugingqika: ukukhiqiza okuphezulu, ikhwalithi enhle, izindleko eziphansi, futhi kungasindisa ukuguga nokudabuka okuningi kwezinto zensimbi, ngakho-ke ukusetshenziswa okubanzi kakhulu kobuchwepheshe bokukhiqiza impahla eyinhlanganisela.Ishidi eliyinhlanganisela eligoqayo elihlanganisa u-90% wesamba sepuleti eliyinhlanganisela, futhi livame ukusetshenziswa kugqinsi lwamapayipi olungaphansi kuka-32mm wokucubungula.

Ukungalungi kokugoqa: ukutshalwa kwezimali kwesikhathi esisodwa, kodwa futhi inhlanganisela yezinto eziningi ayikwazi ukufezwa nge-rolling complex.Njengamanje ubuchwepheshe obusetshenziswa kakhulu ekusetshenzisweni kwensimbi egoqayo, insimbi engagqwali eyinhlanganisela yamapayipi ahlangene yokukhiqiza.

I-extrusion eshisayo imvamisa yenzelwe ishubhu ye-bi-metal, ebizwa ngokuthi i-composite extrusion (coextrude).I-Coextrusion okwamanje iyindlela engcono kakhulu yokukhiqiza insimbi engagqwali kanye neshubhu ehlanganisiwe ye-nickel ephezulu engenamthungo, i-Japan Steel ekhiqizwa ngale ndlela engu-8in (203.2mm) ngaphansi kwepayipi eliyinhlanganisela ye-bimetallic.Kuyinhlanganisela enobubanzi obukhulu ehlanganisa insimbi engenalutho emibili noma ngaphezulu eshiselwe cishe ku-1200.℃, bese ikhishwa nge-annular space eyakhiwe isikhunta kanye ne-mandrel.Lapho i-extrusion billet cross-section iyancipha ibe ngu-10: 1, ingcindezi ephezulu ye-extrusion kanye nezinga lokushisa kusixhumi esibonakalayo kukhiqizwa umphumela we-welding "pressure welding", ikhuthaza ukusakazeka okusheshayo nokusabalele kwesixhumi esibonakalayo phakathi kwenhlanganisela ukuze kuzuzwe isikhombimsebenzisi se-metallurgical bonding.Ngaphambi kwe-extrusion composite tube yokukhiqiza indlela, kunezintathu: ukubhoboza i-billet yokuqamba futhi kwandiswe yi-extrusion eshisayo etholiwe;ukusakaza okuqondile kwe-centrifugal;izinhlayiya zempushana ezikwazi ukumelana nokugqwala.Kukhona izinto ezimbili zokusetshenziswa kwensimbi ezisetshenziswa ngaphakathi nangaphandle kwempushana, ebizwa ngokuthi "NUVAL" ubuchwepheshe, ingathuthukisa ama-alloys amasha, kodwa izindleko ziphezulu kakhulu zokulungiselela i-powder.Ububi be-Coextrusion buyi:

Izinzuzo ze-extrusion eshisayo : I-interface ihlanganiswe nge-metallurgically;Amandla ahilelekile enqubweni ye-extrusion acindezelekile ngokuphelele, afaneleka ngokukhethekile ekusebenzeni okushisayo, ukucubungula i-alloy high plasticity ephansi yezinsimbi.

Ububi be-extrusion eshisayo: Njengoba kunqunywa inqubo yokukhishwa ehlanganiswe ne-interface emfushane kakhulu yokusabalalisa izakhi, ngokuvamile ngenxa yokuba khona kwamafilimu e-oxide athintekile, kuze kube manje akhawulelwe ku-composite extrusion composite carbon steel, insimbi engagqwali kanye nama-alloys aphezulu e-nickel phakathi. .Kuyaphawulwa ukuthi ukumelana okuncane kokuguqulwa kwe-extrusion eshisayo, okuvumela izinga elikhulu lokuguquguquka ngakunye, okuholela ekuqineni okuphezulu kwendawo, futhi ngenxa yalokho futhi kube nokubandayo okungaphezulu kwe-extrusion eshisayo (noma umdwebo) wendlela yokukhiqiza ipayipi eliyinhlanganisela. .