A low-mick heavy thick-wall high-tooth internal thread copper pipe and its processing tool

Abstract

The invention provides a low-mick heavy thick-wall high-tooth internal thread copper pipe and a processing tool thereof, which belong to the technical field of metal products. A low-mick heavy-walled high-tooth internally threaded copper pipe includes a tubular body made of copper and provided with several helically arranged threads on the inner wall, and the bottom wall thickness of the main body is 0.2-0.21mm, and the tooth height is 0.18mm. Realize the low grammage production of the thick-walled high-toothed internal thread copper pipe under the same energy efficiency ratio, and save materials; in addition, a processing tool for the above-mentioned low grammage thick-walled high-toothed internal thread copper pipe is provided, The outer diameter of the threaded core head is set between 6.8 and 7.5mm to reduce the resistance encountered during the drawing process of the copper tube and avoid the problem of broken tubes. The fillet radius of the bottom is 0.04 ~ 0.055mm, and the fillet radius of the bottom of the tooth is greater than the height of the tooth, which is convenient for the tube blank to form teeth. The spinning device with six non-standard steel balls reduces the processing rate from the tube blank to the finished product and meets the requirements Manufacturing requirements for low-mick heavy, thick-walled, high-toothed internally threaded copper pipes.

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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