Spheroidizing is a form of annealing which in the process of heating and cooling steel produces a rounded or globular form of carbide ----the hard constituent in steel.

• 球化是退火的一种，此工艺中加热与冷却钢材，钢材内部产生圆形或球状碳化粒子，碳化粒子是钢材的硬质部分。