The on line hot treatment can not only boost the strength but also gain lower cost.It is usually called tempcore which was developed greatly these years.

• 通过对热轧棒材进行在线热处理既可以提高强度,又可以降低成本,是近年来发展较快的一项新工艺,通常被称为热芯回火工艺,也称为穿水冷却工艺。