Method of forming nozzles with increased wall thickness

 

(57) Abstract:

The invention relates to the processing of metals by pressure. The method includes rotating the extrusion nozzle with simultaneous cutting edge. To increase the wall thickness of the pipe in the matrix set ring with radial holes. When we roll the material is introduced into the holes, playing the role of rivets. The method provides a reliable permanent connection. 3 Il.

The invention relates to a pressure treatment of metals, in particular, to methods for producing parts using obecnych rollers, and can be used in rotary extrusion of aluminum to aluminum, copper, brass, steel and other materials capable of plastic deformation in a cold state.

There is a method of joining parts with the tube by expanding the tube, wherein on the inner surface of the parts are the ring bands [1]. However, to increase the wall thickness of the pipe this way is unacceptable due to concistently of the material used.

A known method of forming nozzles [2] (the prototype). However, in the manufacture of body parts (for example, cases of respiratory CL the infusion becomes thinner in the abs, becomes nephrostomy in diameter and especially the flatness of the cut end.

The specified well-known method of forming nozzles with increased wall thickness includes setting the workpiece on the matrix and rotary extrusion nozzle with simultaneous cutting edge.

The proposed method differs in that to increase the wall thickness of the pipe in the matrix set ring with radial holes. When we roll the material is introduced into the holes, playing the role of rivets.

In Fig. 1 shows the housing vent valve for tanks with petroleum products; Fig. 2 - a device that implements the method of Fig. 3 - ring hardness (a) and scan ring b).

The method is as follows. In matrix 2 (Fig. 2) establish calculando to the desired diameter of the ring 4 from sheet material with radial holes, as shown in Fig. 3. The source of the workpiece 5 is set on the matrix 2. Raskatnoe head 1 is injected axial movement in the bore in the workpiece 5 and ukatyvajut the workpiece material in the matrix. Contact cativeiro material with the end rings, the latter under the action of forces in the al workpiece rolls into the holes of the ring, playing the role of the rivets and providing a reliable permanent connection.

Method of forming nozzles with increased wall thickness, including the installation of a billet on the matrix and rotary extrusion nozzle with simultaneous cutting edge, characterized in that the matrix set ring with separately spaced holes, and the extrusion is carried out from the holes of the ring roll out material that acts as a rivet.

 

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