The reason for the uneven surface temperature of the wear-resistant hammer

During the heating and cooling process of the wear-resistant hammerhead, because of the inconsistent cooling rate and time, a temperature difference will be formed between the surface and the interior of the hammerhead at this moment, and a kind of thermal stress will be generated at this time. This thermal stress It can cause the unevenness of the hammer head of the crusher and affect the normal use. What should I do if the surface temperature of the wear-resistant hammer is uneven?

Under the influence of thermal stress, the surface temperature of the hammer head of the wear-resistant parts crusher is lower than the inside, and the contraction force is therefore greater than the inside, causing the inside of the hammer to be pulled, and finally the surface of the hammer is compressed and the inside is controlled. We found that the thermal stress is mainly affected by the material composition and cooling rate of the hammer head of the crusher, that is, the higher the carbon content and alloy composition of the hammer head of the crusher. The greater the cooling rate, the greater the uneven expansion and contraction deformation under the influence of thermal stress, and the greater the residual stress.

Secondly, the hardness of the wear-resistant hammer head is not as high as possible. Under certain working conditions, excessive hardness can easily cause the initiation of micro-cracks. For the abrasive wear of the micro-cutting mechanism, increasing the hardness of the wear-resistant hammer is conducive to the improvement of wear resistance. For the abrasive wear of the fatigue spalling mechanism, the higher hardness of the wear-resistant hammer is matched with good plasticity and toughness, especially with good fracture toughness, low crack growth rate and high impact fatigue resistance. Conducive to the improvement of abrasion resistance.
The above is a brief introduction about the uneven surface temperature of the wear-resistant hammer. You can know something, and I hope it can be helpful to you. If you have other content you need to know, you can follow us at any time, and welcome to inquire, and we look forward to your call!