What is the processing technology flow of cylinder head?
2 Answers
The entire processing of the cylinder block involves more than ten procedures. These include cutting processing, cleaning, leak testing, installing main bearing caps, tightening, pressing plug covers, and inspection. Applying sealant and grouping marking procedures. The rough machining of front and rear surfaces, oil passages, guide holes, semicircular surfaces of the crankshaft hole, and process positioning holes is carried out using a horizontal machining center.
I know quite a bit about cylinder head machining. From factory experience, the process typically involves: first casting the blank, using aluminum alloy or cast iron materials to form the basic shape. Next is rough machining, such as turning and milling to shape the surfaces and ensure flatness. Then comes drilling and tapping—drilling spark plug holes, cooling channels, and other openings, followed by threading tools to create internal threads. The next step is precision machining, grinding surfaces to improve accuracy and ensure airtightness. After that, cleaning to remove debris and prevent residue from causing issues. Finally, assembling components like valves and springs, followed by leak testing to detect any air leaks. The entire process requires high-precision equipment, and workers must carefully control temperatures to avoid deformation. In automotive repair, improper cylinder head machining often leads to engine oil leaks or overheating, so I advise everyone to regularly inspect the engine cooling system.
