Manufacturing Process and Quality Control of CRH380B High Speed Rail Gear Box

The quality standard of CRH380B high-speed EMU gearbox case, casting process design and optimization, and process methods such as metamorphic refining, pouring and heat treatment are introduced. The developed CRH380B gearbox has the advantages of good internal quality and high physical mechanical properties, thus ensuring the safety and reliability of the product. The control measures of product quality are expounded from the aspects of product design, process control, quality inspection, etc., to ensure the quality stability of the production process.