Hazards arising from the difference in thermal conduction between mineral casting and steel components mainly include impaired dimensional stability, structural deformation or fracture, reduced fatigue strength and service life, as well as deteriorated rigidity and structural stability.
Thermal conduction is an important research field in materials science, involving energy transfer and material properties. The thermal conduction process affects various material characteristics such as thermal conductivity, thermal expansion performance and thermal stability. Temperature fluctuations coupled with differences in thermal conduction properties will trigger a range of problems.
First of all, differences in thermal conduction undermine dimensional stability. When exposed to heat, materials with poor thermal conduction may suffer local overheating or shrinkage during cooling, which impairs dimensional accuracy. Such instability may further cause structural deformation or fracture, especially for high-precision components like mechanical parts and building structures that require strict dimensional consistency. Secondly, inconsistent thermal conduction can initiate microcracks inside materials and reduce their fatigue strength and service life. Repeated thermal cycles build up internal thermal stress; once the stress exceeds the material’s bearing capacity, cracking or fracture will occur. In addition, temperature changes alter the elastic modulus of materials, resulting in variations in rigidity and stability and further degrading mechanical performance.
Furthermore, thermal conduction exerts a significant impact on the thermal stability of materials. In high-temperature environments, excessively high thermal conductivity will intensify thermal expansion and internal thermal stress, compromising thermal stability and potentially leading to deformation, cracking and even complete failure of the material.
In conclusion, the hazards caused by differences in material thermal conduction are mainly reflected in compromised dimensional stability, structural deformation or fracture, decreased fatigue strength and service life, and degraded rigidity and stability. These risks must be fully taken into account during material design and application to guarantee the safety and reliability of materials.
