Technology for connecting same or different metal material pipes in rotary forging mode

Abstract

The invention provides a technology for connecting same or different metal material pipes in a rotary forging mode. The technology includes the following steps: the metal pipes needing to be connected are prepared, wherein the diameters of the two pipes are different, and the inner diameter of the large pipe is larger than the outer diameter of the small pipe; a core rod is prepared, wherein the diameter of the core rod is slightly smaller than the inner diameter of the small pipe; the core rod is inserted into an inner hole of the small pipe, and meanwhile the small pipe is inserted into the large pipe, so that the core rod, the small pipe and the large pipe are connected together in a sleeved mode; rotary forging reduction machining is carried out on the exterior of the large pipe through a rotary forging machine; the exterior of the small pipe is tightly held through the interior of the large pipe by means of the machining deformation, and meanwhile the core rod is tightly held by the interior of the small pipe; rotary forging reduction is continuously carried out to enable materials to flow in the axial direction; the core rod is pulled out, machining is completed, and the large pipe and the small pipe are firmly connected together. When the pipes are connected with the technology, the firm effect and the reliable effect can be achieved, and the application range is wide; in addition, the sealing effect can be achieved, and the broad application prospect can be achieved.

Description

technical field [0001] The invention relates to the field of mechanical processing, and specifically provides a connection process between pipe fittings by using a swaging process. Background technique [0002] There are certain difficulties in welding (connecting) between different metals. Due to the status quo of conventional welding technology, welding cannot be used for solid connection between some specific metals (such as titanium and copper). However, the traditional methods such as riveting and screwing have a single stress point, are easily damaged, and cannot be applied to occasions that require sealing. The invention can solve the connection problem between pipe parts (same or different materials). Contents of the invention [0003] The object of the present invention is to provide a swaging connection process between pipe fittings of the same or dissimilar metal materials. Adopting the process method to connect pipes is firm and reliable, and has wide applica...

AI Technical Summary

Problems solved by technology

[0002] There is a certain difficulty in welding (connecting) between different metals. Due to the status quo of conventional welding technology, welding cannot be used for solid connection between some specific metals (such as titanium and copper)

However, traditional riveting and threaded connections have a single stress point, are easily damaged, and cannot be applied to occasions that require sealing.

Images