In industry, thermally shocked components lead to early failures and unexpected breakdowns during production resulting in huge losses in profit. Thus, the present study investigates the as-received, hardened and hardened and nitrogen treated H13 tool steels subjected to a thermal shock gradient similar to the actual industrial applications. The thermal shock gradients were created by using an in-house-built thermal shock fatigue cyclic treatment machine. The effect of thermal shock fatigue cyclic treatments at 1000 and 2000 thermal shock cycles in hot and molten metal chambers was noticed. All the thermal shock fatigue cyclic-treated samples were analysed by hardness, X-ray diffraction, microscopy and magnetic tests. The interesting changes in hardness, distorted crystal structure and crack initiation were found to be different for differently treated H13 tool steel specimens. The molten aluminium was more prone to stick to the surface of as-received as well as hardened and nitrogen treated steel compared to the hardened H13 steel specimens, which would delay the crack initiation. The wear resistance properties of the hardened H13 steel specimens were found to be higher than as-received and hardened and nitrogen treated H13 steel specimens after thermal shock fatigue cyclic treatment. The loss in magnetic properties was significant for the hardened and hardened and nitrogen treated samples compared to as-received H13 tool steel specimens. Therefore, the present 1000 and 2000 thermal fatigue cycles for 30 s at 670 °C would be worthy to predict the proper heat treatment method to design the parameters as well as the life of die-casting components and to help in the economical production of casting.

在工业中，热冲击组件会导致早期故障以及生产过程中的意外故障，从而导致巨额利润损失。因此，本研究调查了与实际工业应用类似的，经受热冲击梯度作用的按原样，硬化，硬化和氮处理的H13工具钢。通过使用内置的热冲击疲劳循环处理机来创建热冲击梯度。注意到在热金属和熔融金属腔室内进行1000和2000次热冲击循环后的热冲击疲劳循环处理的效果。通过硬度，X射线衍射，显微镜和磁测试分析了所有热冲击疲劳循环处理的样品。硬度的有趣变化 对于不同处理的H13工具钢样品，发现扭曲的晶体结构和裂纹萌生是不同的。与硬化的H13钢试样相比，熔融铝更易于粘附在已接收以及硬化和氮处理的钢表面，这会延迟裂纹的产生。发现，经过热冲击疲劳循环处理后，硬化的H13钢试样的耐磨性高于接受和硬化并经氮气处理的H13钢试样。与按原样接收的H13工具钢样品相比，硬化，淬火和氮气处理的样品的磁性能损失显着。所以，