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本文介绍了一种生产高颈法兰的新工艺，用热轧和冷弯代替砂型铸造＋切削加工工艺。分析了新工艺的技术关键及解决办法。
This article describes a new production of high-neck flange technology, with hot-rolled and cold instead of sand casting + cutting process. The key technology and solution of new technology are analyzed.