Kev kos duab txias cuam tshuam nrog rub lub kub- dov, descaled bar los ntawm qhov tuag ntawm chav tsev kub kom txo nws txoj kab thiab txhim kho nws qhov chaw tiav thiab qhov tseeb.
Cov teebmeem, yam ntxwv, thiab kev sib piv:
| Yam | Kub-Rolled AISI 4140 | Txias -Drawn AISI 4140 |
|---|---|---|
| Txheej txheem | Shaped at high temperature (>1100 degree). | Kos los ntawm kev tuag ntawm chav tsev kub. |
| Nto tiav | Rough, nrog zeb nplai. | Heev du, ci, los yog ci tiav. |
| Dimensional raug | Kev lag luam kam rau ua (piv txwv li, ± 0.8mm ntawm 50mm). | Tight tolerances (piv txwv li, ± 0.1mm ntawm 50mm). |
| Mechanical Properties | Raws li -rolled (annealed/normalized) xeev. | Ua hauj lwm Hardened: siab dua yield thiab tensile zog, qis ductility nyob rau hauv raws li - kos lub xeev. |
| Grain Structure | Equiaxed, recrystallized nplej. | Elongated, directional nplej. |
| Residual Stress | Ua tau los ntawm qhov tsis sib xws. | Higher deg compressive stresses qhia. |
| Kev siv thawj zaug | Forging, machining qhov twg cov khoom raug tshem tawm, kev kho cua sov zaum kawg. | Precision Cheebtsam, shafts, pins qhov twg tsawg machining yog xav tau; feem ntau siv raws li - yog tsis muaj kev kho cua sov ntxiv. |
Txias- cov kab kos muaj "npaj-rau- siv" qhov tseeb tab sis muaj cov khoom tsis sib xws ntawm lawv cov ntoo khaub lig- ntu thiab tej zaum yuav xav tau kev ntxhov siab yog tias npaj ua haujlwm hnyav.