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根据热推制弯头壁厚不减薄理论,结合中频感应加热推制中小规格不锈钢无缝弯头的工艺特点和难点,通过设计合适的空心芯模并采用芯模内孔通水冷却使芯模内壁保持在较低温度区,解决了中频感应加热推制过程中成型芯模的热强度问题。
According to the theory of non-reducing wall thickness of hot push elbow and combining with the technical characteristics and difficulties of pushing middle and small size stainless steel seamless elbow by medium frequency induction heating, the core The inner wall of the mold is kept in the lower temperature zone, which solves the problem of the hot strength of the forming mandrel during the intermediate frequency induction heating and pushing process.