Diesel Engine Cylinder Head Precision Processing Technology

As the nucleus parts of automobile, the process quality of the parts of engine is the foundation of automobile process.The cylinder head is the part of major part on the engine, and its process precision influences is the key point of the automobile capability. Especially, the process precision of valve seat ring and valve stem guide hole of cylinder head is the most important factor of these key factors.The mismachining tolerance of valve seat ring and valve stem guide hole of cylinder head was analyzed, and the main hazards to the capability of diesel engine was pointed out.By comparing the several process of valve seat ring and valve stem guide hole of cylinder head on the home and abroad, finding out the factors of affecting the processing precision.The YZ4102Q-type cylinder head was analyzed, and the gun-boring-finish turning technology be the most effective and reliable process was pointed out. The gun-boring equipment, cutting tool structure, tool processing parameters and cutting fluid selection was analyzed, and combined with the cutting comparison test, the optimal tool parameters used in the actual process was selected. The problems occurred in the processing was solved, and it can be fitted for mass production.