When gear parts work under heavy loads and high temperatures, the atoms and molecules inside the material will move and rearrange due to the action of thermal energy, leading to volume expansion or contraction of the material, thereby causing changes in size.
In addition, gear parts are also affected by thermal stress at high temperatures. Due to the uneven temperature distribution in different parts of gear parts, thermal stress can occur, further exacerbating the deformation of gear parts.
Therefore, in the design and use process of heavy-duty gear parts, it is necessary to fully consider the influence of thermal effects and thermal stress, take appropriate measures to reduce overheating and thermal stress, avoid dimensional deformation of gear parts, and ensure the stability and reliability of gear transmission.