一、铸造生产协作和专业化的重要性随着现代机械工业的迅速发展,产品品种日益增加,质量要求不断提高。各种产品所需的铸件,不仅种类繁多,单件重量和外形尺寸的范围很大,而且有的材料特殊,有的对表面光洁度和尺寸精确度要求很高,有 First, the importance of collaboration and specialization in foundry production With the rapid development of the modern machinery industry, the variety of products is increasing and the quality requirements are constantly increasing. The castings required for various products are not only diverse, but also have a wide range of single-piece weights and form factors, and some have special materials, and some require high surface finish and dimensional accuracy.