The chassis subframe of new energy vehicles has a large size,complex structure and high mechanical performance requirements.The conventional integrated die-casting process cannot meet the design requirements.Three stage vacuum pumping technology improved the vacuum degree of the mold cavity.The use of cluster local extrusion technology has improved the regional organizational structure,effectively reduced shrinkage and porosity.Production practice certificated that the application of two technologies has improved the quality of the die castings,improved production efficiency,and achieved a product qualification rate of over 95％.
关键词
汽车底盘副车架/一体化压铸/三级抽真空/局部挤压
Key words
vehicle chassis subframe/integrated die casting/three stage vacuum pumping/local extrusion
维普
万方数据