Outer tsho: raw khoom tshuaj xyuas---- lub tsho sab nrauv blank processing---- ntxhib tig lub voj voog sab nrauv---- ntxhib tig sab hauv lub qhov---- kub loading (nrog rau lub tes tsho sab hauv rau kub loading){{ 4}} tho txawv lub qhov - --- zoo sib tsoo --- zoo tig
Lub tes tsho sab hauv: centrifugal casting---kev kho mob annealing--- ntxhib tig sab nrauv--- ntxhib tig sab hauv lub qhov--- semi-finishing tig sab nraud---quenching{{6 }}kev sim tsis muaj kev puas tsuaj--- -Kub haum (nrog lub tsho)
Txoj kev kho cua sov
Normalizing (tshem cov kev ntxhov siab sab hauv, txhim kho hardness) 800 degree kev txuag cua sov 4-5h cua txias
Annealing (softening) 980 degree hlawv 5-6h txias nrog lub cub tawg
quenching (hardening hardness) 980 degree tshav kub preservation 30min cua txias
Tempering (nce cov khoom toughness) 200 degree rau 60min
Kev them nyiaj kub: 450 degree -500 degree rau 5-6h, 100 feem pua kev tshuaj xyuas tag nrho, kev ntsuas siab tom qab txias rau 24 teev
