The specific planning of some projects still needs to be determined according to the needs, for example, the selection and application of some molds depends on the specific situation. So how long is the service life of hot working die steel? After understanding these contents, it will have a good reference and value for the purchase of hot working die steel. The following is a further understanding and analysis of the problem of hot working die steel.

定模具使用寿命重要的因素往往是模具材料的耐磨性。模具在工作中承受相当大的压应力和摩擦力，要求模具能够在强烈摩擦下仍保持其尺寸精度。模具的磨损主要是机械磨损、氧化磨损和熔融磨损三种类型。

The wear resistance of die material is often an important factor to determine the service life of die. The die bears considerable compressive stress and friction in work, so it is required that the die can maintain its dimensional accuracy under strong friction. There are three main types of wear: mechanical wear, oxidation wear and melt wear.

为了改善模具钢的耐磨性，就要既保持模具钢具有高的硬度，又要保证钢中碳化物或其他硬化相的组成、形貌和分布比较合理。

In order to improve the wear resistance of die steel, it is necessary to keep the die steel with high hardness and ensure the reasonable composition, morphology and distribution of carbides or other hardening phases in the steel.

对于重载、高速磨损条件下服役的模具，要求模具钢表面能形成薄而致密粘附性好的氧化膜，保持润滑作用，减少模具和工件之间产生粘咬、焊合等熔融磨损，又能减少模具表面进行氧化造成氧化磨损。所以模具的工作条件对钢的磨损有较大的影响。

For the die in service under heavy load and high speed wear condition, it is required that thin and dense oxide film with good adhesion can be formed on the surface of die steel to maintain lubrication, reduce melting wear such as sticking and welding between die and workpiece, and reduce oxidation wear on die surface. Therefore, the working conditions of the die have a great influence on the wear of the steel.