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发明公开
CN104500882A 管与法兰的连接结构及其加工方法 失效 - 权利终止

管与法兰的连接结构及其加工方法
摘要：
本发明公开了一种管与法兰的连接结构及其加工方法，它包括管(1)和套于管端部的法兰(2)，法兰(2)内侧的管(1)为径向向外扩张的凸环(3)，法兰(2)外侧的管(1)为径向向外扩张的翻边(4)，法兰(2)被翻边(4)压紧在凸环(3)上。提供一种生产成本低的管与法兰的连接结构，以及一种加工方法安全、对操作人员身体危害小、制造工序简单、生产周期短的管与法兰的连接结构加工方法。
摘要（英）：

The invention discloses a pipe and flange connection structure and a processing method thereof. The pipe and flange connection structure comprises a pipe (1) and a flange (2) sleeving the end of the pipe, the pipe (1) inside the flange (2) is provided with a convex ring (3) expanding outwards radially, the pipe (1) outside the flange (2) is provided with a flanging (4) expanding outwards radially, and the flange (4) is tightly pressed onto the convex ring (3) by the flanging (4). The pipe and flange connection structure is low in production cost, and the processing method of the pipe and flange connection structure is low in harms to bodies of operators, simple in manufacturing process and short in production cycle.

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