Cov txheej txheem ntau lawm ntawm tuab-walled seamless steel yeeb nkab:
1. Round raj → cua sov → perforation → peb-yob cross dov, nruam dov los yog extrusion → raj tshem tawm → sizing (los yog txoj kab uas hla txo) → txias → straightening.
2. Cold drawn (dov) seamless steel yeeb nkab:
Round raj → cua sov → perforation → taub hau → annealing → pickling → oiling (tooj liab plating) → multi-pass txias drawing (txias dov) → ntxhib raj cua sov kho (xws li quenching thiab tempering, normalizing, annealing, thiab lwm yam) → ntxhib yeeb nkab straightening Ncaj → tiav.
3. Kev tsim cov txheej txheem ntawm thermally nthuav seamless steel yeeb nkab:
Round raj dawb paug → cua sov → tho-upsetting-annealing-pickling-oiling-multi-pass txias daim duab (txias dov)-dawb straightening-tiav.
4. Cov txheej txheem ntau lawm ntawm kub dov seamless steel yeeb nkab yog tib yam li thermal expansion, tshwj tsis yog tias qhov loj ntawm lub hollow capillary raj yog me dua.
5. Ntxig cov yeeb nkab rau hauv lub mandrel siv txoj kev jacking. Tom qab ncav cuag qhov ntev predetermined, tshem tawm lub mandrel.
6. Txoj kev kos duab hlau yog kos cov hlau xaim rau hauv filaments los ntawm kev tuag.
7. Txoj kev extrusion yog qhov hlau bar txav mus rau pem hauv ntej hauv qab nyem ntawm extruder.
8. Muaj peb txoj kev khoov uas feem ntau siv:
Ib txoj kev yog hydraulic dabtsi yog khoov; lwm yam yog mechanical dabtsi yog khoov; qhov thib peb yog nplaim taws khoov.
9. Straightening tshuab Lub tshuab ncaj yog siv los xyuas thiab kho qhov ncaj thiab ntsug ntawm cov kav dej ntev ntev, thiab tsim cov kav hlau seamless ntawm ntau lub kaum ntse ntse.
10. Chamfer: Curl lub phaj steel raws li txheej ncig mus rau hauv ib lub voj voog.
11. Grooving Grooving yog curling steel phaj raws li txheej ncig mus rau hauv ib lub voj voog.
12. Rolling: Siv ib tug tapered core los qhwv lub ntug ntawm lub rooj tsavxwm rau hauv ib tug nkhaus nto. Rolling yuav tsum xyuas kom meej tias cov npoo zoo huv si thiab tsis deformed.
13. Txiav cov npoo. Siv cov cuab yeej tshwj xeeb los txiav cov flanges thiab txiav cov hlau oxide nplai.
14. Polishing: Ua kev kho kom zoo nkauj ntawm tag nrho txoj kev ntws ntawm cov kav dej loj-ntev kauv welded kav.
15. Ultrasonic flaw detection yuav tsum tau nqa tawm los ntawm cov khoom raws li GB7735 tus qauv.
16. Spraying mark Cov tshuaj tsuag yog ib qho cim ntawm tus naj npawb, specification thiab ntau lawm batch tooj txau nrog cov xim.
