Manufacturing method for pipe connector
A manufacturing method and technology of pipe joints, which are applied in the field of metal pipe fittings manufacturing, can solve the problems of poor firmness of pipe joints, low production efficiency, and high cost of pipe joints, and achieve the effects of high firmness, simple manufacturing, and no need for solder consumption
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[0006] The manufacturing method of the present invention is to process the inner hole of the external threaded joint into two sections with unequal diameters, respectively corresponding to the threaded section and the hexagonal surface section on the outer surface of the externally threaded joint. The inner hole diameter of the corresponding hexagonal surface section is slightly smaller. They are connected by an inclined plane, and at least two grooves along the centerline of the hole are opened on the inner hole wall of the corresponding thread section. The grooves are distributed along the circumference of the inner hole, and the metal pipe penetrates the inner hole of the external threaded joint. The assembly is formed, and the assembly is placed on the lower die of the punching press. The shape of the lower die cavity is adapted to the external shape of the external thread joint. The upper die is used to punch into the inner cavity of the metal pipe end, and the metal pipe is...
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