9 cr2mo cov ntaub ntawv rau raug Cr2 txias yob steel yog tsuas yog nyob rau hauv cov kev lag luam siv nyob rau hauv lub tsim ntawm txias dov nrog cov menyuam ntawm cov menyuam txias tuag thiab xuas nrig ntaus thiab lwm yam forging, tab sis muaj coob tus hais tias tsis paub txog 9 cr2mo cua sov txoj kev, yog li ntawm no mas tham txog 9 cr2mo kev kho cua sov txoj kev, vam tias yuav yog spheroidizing annealing: 1 790 ~ 810 cua sov, isothermal, 650 ~ 670, 500 los ntawm huab cua txias; 2 quenching: cua sov kub = 880 ~ 900, quenching txias: raws li kev sib txawv forgings thiab cov kev xav tau sib txawv, txias nruab nrab xws li dej PAG quenching kua roj siv tau.
Lus Cim: Cov forgings yog Cr2 txias yob steel.

3 Qhov tseem ceeb ntawm qhov kub thiab txias (kwv yees tus nqi): Ac1 = 740 C Ar1 = 700 C Accm: 850 C 4 Common Softening specifications rau txias nias dawb paug820 10) C 3 ~ 4h, nrog rau qhov txias ntawm.15 C / h, nrog rau lub cub tawg maj mam txias mus rau 650 C, 5 txias nias dawb paug los ntawm lub qhov cub txias rau spindle-spindle softening specifications820 10) C 3 ~ 4h, (720 10) C 6 ~ 8h, tom qab ntawd nrog lub cub tawg maj mam txias mus rau 600 C, Specification rau normalizing: normalizing kub 900 ~ 920 C, hardness 302-388HBW 7 Batch isothermal spheroidizing790 ~ Annealing 810 C 2 ~ 3h, rauv txias, 7O0-720 C 3 ~ 4h, hardness 217HBW, Pearlitic ntaub so ntswg qib 2-5, Specification rau quenching thiab tempering ntawm 8 forgings ntawm mesh carbide qib 2 1. Quenching kub 830-850 C, hardness 62-65 HRC kub 130-150 C, hardness 62-65 HRC 2. Quenching kub 840-860 C, hardness 61-63 HRC, tempering kub 150-170 C, hardness 60-62HRC.