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1.成型模具预热原因在挖掘机铲斗侧刃板制作过程中,需要使用成型模具对其进行热压成型。此时若成型模具温度过低,加热出炉后的侧刃板在成型模具上散热过快,会造成侧刃板氧化皮过多、材料硬度及韧性不合格。此外,若成型模具温度变化剧烈,会造成其内部应力加大,容易导致成型模具损坏。为此,需要对成型模具进行预热。2.改进前的预热方法改进前的侧刃板成型模具预热是用预热钢板加热。将1块尺寸为300mm×300mm×30mm的预热钢板随侧刃板毛坯一起装炉加热。在侧刃
1. Molding mold preheating reasons In the excavator bucket side blade production process, the need to use the molding die for hot forming. At this time if the forming mold temperature is too low, heating the blade after the edge of the mold in the mold on the heat too fast, will cause the side edge of the blade too much scale, material hardness and toughness unqualified. In addition, if the mold temperature changes dramatically, it will cause increased internal stress, easily lead to mold damage. For this reason, the mold needs to be preheated. 2 before the improvement of the preheating method to improve the front edge of the blade mold preheating is preheated steel heating. One piece of preheated steel sheet with the size of 300mm × 300mm × 30mm was heated with the edge blank blank together. In the side edge