Method for expansion copper pipe

Abstract

The invention relates to the technical field of the manufacturing of the pipelines of an air conditioning system and particularly discloses a method for expanding a copper pipe. The method for expanding the copper pipe comprises: (1) a pipe expanding process step, which is carried out by a pipe expander provided with a collet; and (2) a flaring process step, in which a flaring kit with a stage-like conical end socket is used for flaring a U-pipe which is expanded by the step (1). In the method, the pipe expanding process and the flaring process are carried out independently and the pipe end side and the elbow side of the U-pipe are fixed and clamped tightly in the pipe expanding process respectively, so the extension of the two ends of the U-pipe are very uniform after the pipe expansion and the U-pipe does not deform; the pipe end side of the U-pipe has no flanging phenomenon after the flaring, the bell-mouthed size is uniform, and the problem of cracking or flaring failure is avoided; and fins do not move between the holding door planets on the two sides of the pipe expanding equipment and the flaring kit, so the traces of damages of the fins are eliminated.

Description

technical field [0001] The invention relates to the technical field of air-conditioning system pipeline manufacturing, and in particular to a copper tube expansion method. Background technique [0002] As we all know, air conditioners play an important role in people's daily life. Air conditioners can be used for heating in winter and cooling in summer. Air conditioners provide a comfortable environment for our lives. Therefore, when people buy air conditioners, they all hope to buy high-quality air conditioners. [0003] As an important heat exchange device in an air conditioner, the coil is a pipe for the circulation of cooling or heating media (freon, etc.). The coil is equipped with fins to enhance the heat exchange effect. The wind blown by the fan passes through the fins outside the coil to take away the cooling or heat, so that the wind after the temperature change is blown into the room, and there is an air conditioner. Effect. [0004] The coil is composed of man...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a copper tube expansion method to overcome the U-shaped tube end that is easy to crack when the expansion head goes down in the current tube expansion technology, and the U-shaped tube has deformation and various defects. and other problems

Images