There is no answer to doubling lifespan without increasing costs, and if there is, I won’t tell you.

The problem of doubling lifespan without increasing costs cannot be solved.

Mr. Lin is engaged in hot rolling, hot cutting, and hot forming, including a clamp with a working temperature of 300 ℃. He currently uses H13 mold steel, but the sharp corners of the clamp are severely worn, causing slippage and a lifespan of about 500 to 800. The lifespan is too short and the cost of accessories is high. He wants to find a mold steel to improve the lifespan, reduce the frequency of accessory replacement, and hope to double the lifespan. However, the overall cost cannot be increased. What die steel do you want to use?

When the gripper is working, it needs to tighten the very hot workpiece, which is prone to annealing and thermal wear. At this time, not only high heat resistance and hardness are required, but also high toughness is needed. The sharp corners cannot collapse or wear, nor can they collapse.

H13 is a chromium based hot work tool steel of 4Cr5MoSiV1, with a hardness of HRC50. The heat-resistant alloy molybdenum Mo content of 1.0% is too low, resulting in poor heat resistance and low hardness. The sharp corners of the inclusions are naturally prone to wear, leading to a short lifespan of corner collapse. This cannot be solved and the only solution is to replace the die steel. At this point, 8566 die steel with high heat resistance, high hardness, and high toughness can be used.

Because the heat resistance of 8566 die steel is as heat-resistant as high-speed steel SKH51, with a hardness of 58-60HRC and toughness four times that of SKH51, 8566 die steel softens the three aspects of high heat resistance, high hardness, and high toughness perfectly. The high hardness and high heat resistance of 8566 have good thermal wear performance, which can ensure that the sharp corners of the gripper do not collapse or wear, thereby improving its service life. However, other die steels do not possess these properties.

However, in order to improve the heat resistance performance, the total amount of heat-resistant alloys must be increased, and the cost also increases accordingly, which does not meet Mr. Lin’s expectation that the cost cannot be increased. Therefore, some things are a dilemma, even unsolvable.

To be frank, doubling lifespan without increasing costs. If there were such a method, I wouldn’t tell you. I would definitely secretly make a fortune myself.