Almost all car engine cylinder heads are made of aluminum alloy, which has a very complex structure and is one of the key casting parts. In the engine, the cylinder head always works in a high temperature state. It needs to bear a large amount of thermal shock and can also cause stress concentration. Therefore, cylinder heads made of aluminum alloy are highly praised by people. In addition to being relatively light in weight, they also have excellent thermal conductivity. For car engines, using this aluminum casting cylinder head can achieve optimal thermal efficiency and effectively prevent overheating of components in the cylinder head. But because the cylinder head belongs to a type of casting with complex internal design and uneven inner and outer walls, a series of difficult and miscellaneous problems may arise during the casting process. The more traditional way of casting cylinder heads is called bottom injection, which is very suitable for uniformly filling the entire mold with the liquid melted from aluminum. However, most of the time in China, top injection is used because it can better cool and solidify the casting. This mature technology has become very international.
The rise of aluminum castings will promote the comprehensive development of the cylinder head industry
2025 06/20