Production method of hose elbow connection and processing device used in the method

Abstract

The invention provides a manufacturing method for a hose bending sub and a processing equipment which is applied in the method, which belongs to the mechanical technology field. The invention solves the problems that the casting parts are easy to produce air holes and the heat treatment can not be processed, which are caused by the high speed and the unstable flow pattern of the liquid metal mould filling during the die casting process of the current hose. The manufacturing techniques of the hose bending joint comprises the steps: a. material preparation: a cylinder shaped pipe is prepared for the annealing treatment; b. convex ring processing: a plurality of convex rings are processed through the extrusion way at one end of the pipe; c. neck joint forming: the cone shaped neck joint is processed at the end part of one end of the pipe which is provided with the convex ring; d. pipe body bending: the middle part of the pipe is bended; e. flange joint forming: the flange joint is processed at the other end part of the pipe and the finished product is obtained. The manufacturing method for a hose bending sub has the advantages of simple processing technique, low manufacturing cost, thin pipe wall and good molding effects.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a method for manufacturing a hose elbow joint and a processing device used in the method. Background technique [0002] Existing hose elbow joints used in air conditioners or other fields are generally formed by die-casting and red punching. There are insurmountable defects in the die-casting process: 1. Due to the high speed of filling the cavity with liquid metal during die-casting, the flow state is unstable, and the castings are prone to produce pores, so heat treatment cannot be performed; 2. The life of the die-casting product is low and unsuitable. Small batch production; 3. The pipe wall of the die-casting product is thicker, the amount of raw materials is large, and the production cost is high. The red punching processing method is a process method for stamping processing by utilizing the characteristics of the material that the tensile strength and shear strength are g...

AI Technical Summary

Problems solved by technology

There are insurmountable defects in the die-casting process: 1. Due to the high speed of filling the cavity with liquid metal during die-casting, the flow state is unstable, and the castings are prone to produce pores, so heat treatment cannot be performed; 2. The life of the die-casting product is low and unsuitable. Small batch production; 3. The pipe wall of die-casting products is thicker, the amount of raw materials is large, and the production cost is high

In addition, the size of the product obtained due to red punching can only be determined according to the mold. If products of different sizes are needed, molds must be manufactured separately, which increases the production cost.

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