Pipe e se nang moroalo e bophara bo boholomokhoa oa ho etsa mocheso oa ho bopa

Mocheso ho etsa tlhahiso tshebetso, ho akarelletsa le e kholo-bophara seamless hot-rolled le chesang extrusion ea mekhoa e 'meli, ea pele e haholo-holo sebelisoa ka tlhahiso ea composite phala manonyeletso, e leng sebetsa seamless composite phala tlhahiso.

Rolling ke mokhoa o tloaelehileng oa ho lokisa peipi ea tšepe e se nang seamless e bophara bo boholo.Hot rolling ka ntho ea khatello ea tjheseletsa, haeba deformation e le khōlō ka ho lekaneng, khatello e hlahisoang ke moqolo oa tšepe e ne e tla senya holim'a filimi oxide, holim'a athomo ka kopana, e le hore bokaholimo tse peli ba welded hammoho.Melemo ea Rolling ke:

Melemo ea ho roala: tlhahiso e phahameng, boleng bo botle, theko e tlaase, 'me e ka boloka ho senyeha ho hongata le ho taboha ha thepa ea tšepe, ka hona ke ts'ebeliso e pharaletseng haholo ea theknoloji ea tlhahiso ea thepa e kopantsoeng.Thepa e kopanyang lakane e kopanyang 90% ea poleiti eohle e kopantsoeng, 'me hangata e sebelisoa ho botenya ba lebota la phala e ka tlase ho 32mm ea ts'ebetso.

Mathata a ho roala: matsete a nako e le 'ngoe, empa hape le mefuta e mengata ea lintho tse bonahalang e ke ke ea finyelloa ka ho rarahana.Hona joale ke thekenoloji e sebelisoang ka ho fetisisa bakeng sa tšebeliso ea tšepe e rollang, tšepe e sa hloekang e entsoeng ka motsoako oa liphaephe tse entsoeng.

Hangata extrusion e chesang e etsoa bakeng sa tube ea bi-metal, e bitsoang composite extrusion (coextrude).Hona joale Coextrusion ke mokhoa o molemo ka ho fetisisa oa ho hlahisa tšepe e sa hloekang le e phahameng ea nickel alloy seamless composite tube, Japane Steel e hlahisoang ke mokhoa ona oa 8in (203.2mm) ka tlas'a phala ea bimetallic composite.Ke motsoako o moholo oa bophara bo boholo o nang le tšepe e 'meli kapa ho feta e futhumetse hoo e ka bang 1200.℃, 'me joale extruded ka sebaka annular thehoa ke hlobo le mandrel.Ha extrusion billet cross-karolo e fokotsehile ho 10: 1, khatello e phahameng extrusion le mocheso ka segokanyimmediamentsi sa sebolokigolo hlahisa "khatello tjheseletsa" tjheseletsa phello, khothalletsa ka potlako le ho atile karohano ea segokanyimmediamentsi sa sebolokigolo pakeng tsa motsoako ho finyella segokanyimmediamentsi sa sebolokigolo metallurgical.Pele ho extrusion composite composite mokhoa oa ho etsa li-tube, ho na le tse tharo: ho phunya billet ea forging le ho atolosoa ke extrusion e chesang e fumanoeng;ho lahla centrifugal spin;makumane a phofshoana a hanang ho bola.Ho na le lisebelisoa tse peli tsa tšepe tse sebelisoang ka hare le ka ntle ho phofo, e bitsoang "NUVAL" theknoloji, e ka hlahisa li-alloys tse ncha, empa litšenyehelo li phahame haholo bakeng sa ho lokisetsa phofo.Mefokolo ea Coextrusion ke:

Melemo ea extrusion e chesang : The interface ke metallurgically bonded;matla a amehang ts'ebetsong ea extrusion ke khatello ea kelello ka ho feletseng, ka ho khetheha e loketse hantle ho sebetsa ho chesang, ho sebetsana le alloy e phahameng ea polasetiki e tlaase ea tšepe.

Mathata a extrusion e chesang: Joalo ka ha ho khethiloe ke mokhoa oa extrusion o kopantsoeng le likarolo tse khutšoanyane haholo tsa li-interface, hangata ka lebaka la boteng ba lifilimi tsa oxide li amehile, ho fihlela joale li lekanyelitsoe ho composite extrusion composite carbon steel, tšepe e sa hloekang le li-alloys tse phahameng tsa nickel pakeng tsa. .Hoa hlokomeleha hore e nyenyane deformation khanyetso ea extrusion chesang, lumella tekanyo e khōlō ea deformation mong le e mong, ho fella ka e phahameng holim'a roughness, 'me ka hona e boetse e ba ka ho eketsehileng batang rolling chesang extrusion (kapa ho taka) ea mokhoa oa ho etsa phala motsoako composite. .