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发明公开
CN102492820A 一种防止薄壁大直径压力容器筒体热处理变形的方法 无效 - 驳回

一种防止薄壁大直径压力容器筒体热处理变形的方法
摘要：
本发明公开了一种防止薄壁大直径压力容器筒体热处理变形的方法，将筒体放置在两只元宝铁上进炉热处理，元宝铁与筒体接触处的曲率半径等于或者略大于筒体外径，将筒体外壁与元宝铁均匀接触，元宝铁中心线距筒体端面的距离约为筒体长度L的0.2倍。采用本方法进行热处理，可有效的防止筒体的热处理变形，从而解决了筒体凹陷，筒体椭圆度增加的问题，达到理想的防变形效果，节省筒体校正周期和成本。
摘要（英）：

The invention discloses a method for preventing heat treatment deformation of a thin wall pressure vessel cylindrical shell with major diameter. The cylindrical shell is disposed on two V-blocks and enters a furnace for heat treatment; a radius of curvature of the V-blocks contacting with the cylindrical shell is equal to or larger than an external diameter of the cylindrical shell; an outer wall of the cylindrical shell uniformly contacts with the V-blocks; and a distance between centre lines of the V-blocks and a transverse plane of the cylindrical shell is 0.2 time the length L of the cylindrical shell. The heat treatment of the invention can effectively prevent heat treatment deformation of the cylindrical shell, so as to solve problems of cylindrical shell recess and increase of cylindrical shell ovality, reach ideal deformation resistance effect and save cylindrical shell correction period and cost.

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