Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理织──索氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理想预──氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理织──索氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理想预组织──索氏。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理想预组织──。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理想预组织──索氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球化退火的理想预组织──索氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以化退火的理想预组织──索氏体。

Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.

利用快速冷却技术，可以得到球退火的理想预组织──索氏体。