Nyob rau hauv kev tsim kho ntawm lub teb chaws kev lag luam, kub dov seamless steel raj yog ib qho tseem ceeb ntawm cov khoom steel, ua hauj lwm raws li ib tug irreplaceable thiab muaj kev ruaj ntseg yooj yim raw cov ntaub ntawv nyob rau hauv tseem ceeb sectors xws li roj thiab roj drilling thiab extraction, raws li zoo raws li cov khoom tsim.
Cov txheej txheem ntau lawm ntawm kub dov seamless steel raj yog tus cwj pwm los ntawm ob yam ntxwv. Ua ntej, lub deformation kuj thaum lub sij hawm tho thiab dov ntawm cov khoom billets yog qhov tseem ceeb, yuav tsum ua kom tiav cov txheej txheem tsim ntawm qhov kub deformation ntau dua li lwm cov khoom siv hlau kub. Qhov thib ob, cov raj steel yog txias hauv huab cua tom qab dov, tsis muaj kev tswj xyuas zoo ntawm txoj kev txias.
Kev tshuaj xyuas thiab ntxuav ntawm Billet Surface Defects
Qhov chaw tsis xws luag ntawm cov pob zeb, nrog rau cov pob txha, qhov, qhov zawj, cov kab nrib pleb, thiab lwm yam, feem ntau raug kuaj pom los ntawm cov neeg ua haujlwm (lossis los ntawm cov txheej txheem kuaj tsis muaj kev puas tsuaj yog tias muaj qee qhov yuav tsum tau muaj). Tom qab ntawd, cov teeb meem no raug ntxuav kom huv si. Txhawm rau tiv thaiv kev kuaj tsis tau, kev tshuaj xyuas saum npoo thiab kev ntxuav kuj tuaj yeem ua tau tom qab lub pob zeb tau raug tshem tawm los yog tua blasting (sandblasting) kom tshem tawm cov nplai zeb nto.
Muaj peb txoj hauv kev los ntxuav cov pob zeb saum npoo tsis xws luag: nplaim taws ntxuav, sib tsoo nrog lub log abrasive, thiab tig. Rau cov pa roj carbon steel billets uas tsis tshua muaj tawg rhiab heev, nplaim taws yog ua haujlwm. Rau cov qib steel nrog ntau dua tawg rhiab heev, xws li high-alloy steel billets, sib tsoo nrog abrasive log yog siv. Rau qee cov qib steel tshwj xeeb, suav nrog cov hlau tsis muaj steel thiab corrosion-resistant alloy billets, nto tig los yog tev tawm yog tsim nyog rau kev ntxuav.
Lub drawbacks ntawm kev siv tig los yog sib tsoo nrog abrasive log los ntxuav billets muaj xws li cov hlau siv tseem ceeb thiab tsis tshua muaj efficiency, tab sis cov ntxuav billet nto muaj superior zoo. Nyob rau hauv sib piv, nplaim taws ntxuav muaj ntau ntau lawm efficiency, tab sis qhov zoo ntawm cov pob zeb ntxuav qhov chaw yog inferior rau qhov ua tiav los ntawm kev tig los yog sib tsoo nrog abrasive log.
