When manufacturing engine parts, how does the choice of casting material affect performance?

In the field of engine manufacturing of heavy truck castings, the selection of casting materials has a profound impact on the performance of engine parts and requires a balance between multiple factors. One of the first considerations is high temperature performance. Because engines generate high-temperature environments during operation, it is critical to use materials that can withstand extremely high temperatures. Some common high-temperature resistant materials include nickel-based alloys, titanium alloys, and high-temperature alloy steels. These materials can maintain stable mechanical properties in high-temperature environments, ensuring that the engine does not fail when operating under high-temperature conditions.

Engine parts need to withstand high pressure and high frequency reciprocating motion during operation, so it is essential to choose materials with sufficient strength and hardness. Alloy steel, aluminum alloy and other materials are often selected to meet the mechanical requirements of engine parts under complex working conditions. These materials can provide sufficient tensile strength and hardness to ensure that parts do not suffer fatigue failure under high loads and high-frequency vibrations.

Wear resistance is also a key factor to consider when selecting casting materials. Since engine parts often rub against each other during operation, good wear resistance is required to extend the service life of the parts. Alloys containing hard particles such as cast iron and aluminum-silicon alloy are common wear-resistant materials, which can effectively improve the surface hardness of parts and resist wear and friction.

Thermal conductivity is a key property to ensure that engine parts can effectively dissipate heat. In high-temperature environments, the alloy's thermal conductivity properties are critical to preventing overheating and damage. Materials such as copper alloy and aluminum alloy usually have good thermal conductivity, which helps to quickly transfer heat to the surrounding environment and ensure that parts can maintain stable working conditions under high temperature conditions.