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Production method of oval-shaped posted sides micropore copper pipe

A manufacturing method and technology of copper tubes, applied in the direction of manufacturing tools, heat treatment process control, heat treatment equipment, etc., can solve the problems of waste of manpower, material resources and other resources, center hole is not round, unqualified products, etc., to save copper materials, The effect of improving the qualified rate of finished products and reducing the number of personnel

Active Publication Date: 2010-09-01
江苏金圣铜业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The elliptical thick-walled microporous copper tube is a new product with high efficiency and energy saving. For a long time, my country has not solved the technical problems of the production process of the elliptical thick-walled microporous. After stringing the required steel wires, they are forged into a circle, and then pressed into an oval shape by a special press. After forging, the steel wires are taken out to achieve the purpose of punching copper rods. However, a fatal problem in this method is the center hole. Out-of-roundness is easy to shift, resulting in a large number of substandard products, so the problem of ellipse and eccentricity has not been well solved, resulting in waste of manpower, material resources and other resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Finished product specifications: outer diameter (large) 7.94mm*(small) 7.62mm (inner hole 1mm)

[0010] Carry out one to three air-drawings of a copper tube with a grade of T2, a state of M, an outer diameter of 38mm, a wall thickness of 5mm, and a length of 2 meters to an outer diameter of 16mm and an inner hole diameter of 10±0.5mm, at 520 Anneal at ℃±10℃ for 3-5 hours, cool for 5-6 hours; then perform one to three times of air drawing to an outer diameter of 10mm and an inner hole diameter of 6±0.5mm, and anneal at 520℃±10℃ for 3-5 hours Hours, cooling for 5-6 hours; put the core into the center hole to draw, then empty draw, and finally use the elliptical outer mold to carry out two air drawing deformations to the oval copper tube, its state is Y, outer diameter (large) 7.94mm*(small) 7.62mm, the diameter of the central inner hole is 1mm.

Embodiment 2

[0012] Finished product specifications: outer diameter (large) 10mm*(small) 6mm (inner hole 0.5mm)

[0013] The red copper tube with grade T2, state M, outer diameter 42mm, wall thickness 6mm, and unlimited length is drawn one to three times until the outer diameter is 20mm and the inner hole diameter is 10±0.5mm, at 520 Anneal at ℃±10℃ for 3-5 hours, cool for 5-6 hours; then perform one to three times of air drawing to an outer diameter of 12mm and an inner hole diameter of 5±0.5mm, and anneal at 520℃±10℃ for 3-5 hours Hours, cooling for 5-6 hours; put the core into the center hole for drawing, then empty drawing, and finally use the elliptical outer mold to carry out two air drawing deformations to the oval copper tube, its state is Y, the outer diameter is 10mm*6mm , The center hole diameter is 0.5mm.

Embodiment 3

[0015] Finished product specifications: outer diameter (large) 6mm*(small) 5mm (inner hole 2mm)

[0016] Carry out one to three air-drawings of copper tubes with grade T2, state M, outer diameter 40mm, wall thickness 5mm, and unlimited length until the outer diameter is 10mm and the inner hole diameter is 10±0.5mm, at 520 Anneal at ℃±10℃ for 3-5 hours, cool for 5-6 hours; then perform one to three times of air drawing until the outer diameter is 8mm and the inner hole diameter is 3±0.5mm, anneal at 520℃±10℃ for 3-5 Hours, cooling for 5-6 hours; put the core into the center hole for drawing, then empty drawing, and finally use the elliptical outer mold to carry out two air drawing deformations to the oval copper tube, the state is Y, the outer diameter is 6mm*5mm, The central bore diameter is 2mm.

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PUM

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Abstract

A manufacturing method of an elliptical thick-wall microporous copper pipe, which belongs to the manufacture field of copper pipes, comprises the following steps of: subjecting the copper pipe with a trademark T2, a state M, an outer diameter 38 to 50 mm, a wall thickness 5 to 6 mm and an unlimited length to non-mandrel drawing, annealing, non-mandrel drawing and annealing; arranging a die core in a central hole; non-mandrel drawing; carrying out non-mandrel drawing deformation twice by using an elliptical outer die to obtain the copper pipe with a state Y, an outer diameter less than 12 mm*10 mm, and a central hole diameter 0.5 to 4 mm. The method can manufacture the copper pipe with thicker elliptical wall, smaller central hole and no core shift, and can lower the manufacture cost of manufacturers.

Description

technical field [0001] The invention relates to a method for manufacturing a copper tube, in particular to a method for manufacturing an elliptical copper tube. Background technique [0002] The elliptical thick-walled microporous copper tube is a new product with high efficiency and energy saving. For a long time, my country has not solved the technical problems of the production process of the elliptical thick-walled microporous. After stringing the required steel wires, they are forged into a circle, and then pressed into an oval shape by a special press. After forging, the steel wires are taken out to achieve the purpose of punching copper rods. However, a fatal problem in this method is the center hole. Out-of-roundness is easy to shift, resulting in a large number of substandard products, so the problem of ellipse and eccentricity has not been well solved, resulting in a waste of manpower, material resources and other resources. Contents of the invention [0003] In o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C1/22B21C3/02C21D9/08C21D11/00
Inventor 蒋再良周军蒋超朱萍徐春燕杨晓程庄琦
Owner 江苏金圣铜业科技有限公司