Introduction: Gear forgings are an important component of mechanical transmission systems, and their quality directly impacts the efficiency and safety of the entire machinery system. In order to ensure the quality of gear forgings, European countries have strict regulations and standardized requirements for the manufacturing process and quality of gear forgings. Germany and France are used as examples to introduce the quality standards for gear forgings in European countries.
I. Quality Standards for Gear Forgings in Germany
Germany sets high requirements on the quality of gear forgings. Currently, Germany’s gear forging manufacturers generally obtain ISO 9001:2008 quality certification and ISO/TS16949 certification. In addition, the German government has also issued multiple regulations and laws to standardize the manufacturing and quality of gear forgings, such as the “Material Data Sheet for Steel Products in Automobiles” and DIN EN 1561 standards for cast steel gears. With standardized manufacturing and quality inspection, German gear forgings have high precision and safety and are widely used in mechanical engineering, automotive manufacturing, and other fields.
II. Quality Standards for Gear Forgings in France
France also sets high standards for gear forgings. The French Bearing and Gear Industry Association (AFAG) Power Transmission Committee promotes the NF E22-104 chemical composition and mechanical performance standards, as well as the NF E22-102 Vickers hardness and microstructure standards. Also, AFNOR has published forging parameters for high viscosity metal forging with carbon 66Mn4. In addition, the French government has also issued a series of supporting policies, such as preferential financing policies for casting enterprises and output rewards, promoting the improvement of gear forging production technology and quality.
Conclusion: These are the quality standards for gear forgings in European countries. In actual production cases, ZF’s passenger car gearbox gears in Germany are typical representatives that hold ISO 9001 certification and ISO/TS 16949 certification. French Electric Industry Group ALSTOM also ensures the accurate size and reliable quality of its gear forgings through internationally standardized production processes and material quality assurance systems.
