Cannot quench my thirst for knowledge. 2006-06-26 01:44:26 補充： *But* it cannot quench my thirst for knowledge.
...noteworthy. below 1175, for example,M2 steel cannot develop full hardness on quenching, because of insufficient carbide solution. at temperatures above about 1230, the as...
...磷 0.012%, 硫 0.008% Heat treatment︰ Heat up 930℃ , then quench into salt bath (400℃) after keeping 40 sec at 400℃ , quench in...