Low-gram-per-meter low-wall-thickness and low-tooth-depth inner grooved copper tube and processing tool thereof

Abstract

The invention provides a low-gram-per-meter low-wall-thickness and low-tooth-depth inner grooved copper tube and a processing tool thereof, and belongs to the technical field of metal products. The low-gram-per-meter low-wall-thickness and low-tooth-depth inner grooved copper tube comprises a copper material and a tubular body, wherein the inner wall of the tubular body is provided with a plurality of spiral lines, the thickness of the bottom wall of the body is 0.2mm-0.21mm, the tooth depth is 0.18mm, manufacturing of the low-gram-per-meter low-wall-thickness and low-tooth-depth inner groovedcopper tube under the same energy efficiency ratio is realized, and materials are saved; in addition, the invention provides a processing tool for the low-gram-per-meter low-wall-thickness and low-tooth-depth inner grooved copper tube, the outer diameter of a threaded core head is set to be 6.8-7.5 mm, so that resistance in the drawing process of the copper tube is reduced, the tube breaking problem is avoided, a corner radius of tooth depth of threads of a core head is set to be 0.03-0.045 mm, a corner radius of a tooth bottom is 0.04-0.55mm, the tooth bottom is larger than a corner radius of the tooth depth, a pipe blank can conveniently form teeth, the machining rate from the pipe blank to a finished product is reduced by adoption of a spinning device of a six-ball non-standard steel ball, so that the manufacturing requirements of the low-gram-per-meter low-wall-thickness and low-tooth-depth inner grooved copper tube are met.

Description

technical field [0001] The invention relates to the technical field of metal products, in particular to a low-mick heavy thick-wall high-tooth internal thread copper pipe and a processing tool thereof. Background technique [0002] Internally threaded copper pipes are widely used in the field of air conditioning due to the particularity of the large contact area of ​​the inner wall of the structure and high energy efficiency ratio. [0003] At present, 7mm internally threaded copper pipes are widely used in the copper pipe industry. However, due to the limitation of production technology, their weight is generally around 50 grams, and their bottom wall thickness is 0.23mm or above, which makes manufacturers The purchase cost increases, which leads to an increase in the production cost and selling price of internally threaded copper pipes, which is not conducive to the development of the industry. Contents of the invention [0004] In view of the above-mentioned problems i...

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Problems solved by technology

[0003] At present, 7mm internally threaded copper pipes are widely used in the copper pipe industry. However, due to the limitation of production technology, their weight is generally around 50 grams, and their bottom wall thickness is 0.23mm or above, which makes manufacturers The purchase cost increases, which leads to an increase in the production cost and selling price of internally threaded copper pipes, which is not conducive to the development of the industry

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