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高温合金钢锻造工艺有何特点

2025-04-03 13:27:31
推荐回答（1个）
回答1：

锻造温度区间窄(一般为100℃左右)， 所以其停锻温度要求不低于950℃ 同时， 高温合金在变形温度下有较高的变形抗力和强化倾向， 变形程度和变形速度越大、变形温度越低， 其变形抗力越高。镍基合金的变形抗力一般为合金结构钢的3～ 4倍。为了防止锻件粗晶，既要使变形均匀， 又要使变形程度不致进入临界变形程度的范围 除控制锻造温度外，应避免重锤连击， 因为单锤变形量过大引起的剧烈变形热效应可能造成锻件局部粗晶， 因此在一火成形的前提下保持适宜的锤击间隔是控制锻件粗晶的重要途径。

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