Hauv tsab xov xwm no, peb yuav tshuaj xyuas cov txheej txheem tsim khoom thiab thev naus laus zis tom qab cov raj tooj liab.
Kev tsim cov txheej txheem ntawm cov raj tooj liab pib nrog kev xaiv cov khoom tsim nyog. Ntshiab tooj liab thiab tooj liab alloys, xws li tooj dag thiab tooj liab, yog cov khoom siv feem ntau siv los ua cov raj tooj liab. Thaum xaiv cov khoom tsim nyog, nws yog melted thiab tig mus rau hauv ingots. Tom qab ntawd cov ingots yog dov rau hauv tooj liab tuav, uas yog siv rau kev tsim cov raj.
Cov kauj ruam tom ntej hauv kev tsim khoom yog extrusion. Extrusion yog txheej txheem uas cov khoom raug yuam los ntawm kev tuag nrog ib qho tshwj xeeb. Nyob rau hauv cov ntaub ntawv ntawm cov raj tooj liab, ib lub raj zoo li tus tuag yog siv los yuam cov tooj liab los ntawm qhov tuag thiab muab lub raj zoo. Cov txheej txheem no yog nqa tawm ntawm qhov kub thiab txias kom yooj yim rau kev tsim cov raj.
Tom qab extrusion, cov hlab yog txiav mus rau hauv lengths thiab straightened rau siv nyob rau hauv ntau daim ntawv thov. Cov kauj ruam tom ntej yog txheej txheem annealing, nyob rau hauv uas cov hlab yog rhuab mus rau high kub thiab ces maj mam txias kom cov ductility ntawm cov khoom. Qhov no ua rau cov hlab ntsha yooj yim rau khoov thiab zoo li qub.
Thaum cov txheej txheem annealing tiav lawm, cov hlab tau raug ntxuav thiab ua tib zoo tshuaj xyuas kom ntseeg tau tias lawv ua tau raws li qhov yuav tsum tau ua. Cov raj raug kuaj xyuas qhov tsis xws luag, xws li cov kab nrib pleb, tawg lossis voids, thiab ua kom ntseeg tau tias lawv ua tau raws li qhov kev cia siab.
Kev siv thev naus laus zis tom qab tsim cov raj tooj liab tau hloov zuj zus hauv xyoo tas los no. Extrusion tshuab tau txhim kho, tso cai rau kev tsim cov raj ntau dua thiab zoo ib yam tooj liab. Tsis tas li ntawd, cov txheej txheem annealing tshiab tau tsim los txhim kho cov raj zoo thiab kav ntev.
Hauv kev xaus, cov txheej txheem kev tsim cov raj tooj liab yog cov txheej txheem nyuaj uas suav nrog cov thev naus laus zis thiab cov cuab yeej tshwj xeeb. Los ntawm kev xaiv cov khoom tsim nyog rau extrusion, annealing thiab kev soj ntsuam zoo, txhua kauj ruam ntawm cov txheej txheem yog qhov tseem ceeb los xyuas kom meej qhov zoo thiab kav ntev ntawm cov hlab. Nrog rau cov thev naus laus zis siab heev muaj, cov tubing tooj liab yuav txuas ntxiv yog qhov kev xaiv ruaj khov thiab ruaj khov rau ntau yam kev siv.
