Preparation process of red copper square pipe material

Abstract

The invention provides a preparation process of a red copper square pipe material. The process comprises the following flow processes of casting, cast ingot sawing and cutting, water seal extrusion, sawing and cutting, straightening, rolling, chain type drawbench circular drawing, circular transition to square pipe material hollow pulling, square pipe material hollow pulling, shaping drawing, finishing, bright annealing and packaging; the diameter shaping drawing is firstly performed after the rolling; the transition to the square pipe material is realized; the diameter shaping hollow pulling is performed; finally, a finished product is fed onto a core head to be subjected to shaping drawing; the goal that the radius R of the circular corner is gradually reduced until the radius R conforms to the requirement is achieved; the outer dimension center part back arching is avoided; the inner dimension is enabled to conform to the requirements; the water seal decrustation processing mode is used in the extrusion process; the pipe blank surface oxidation can be prevented; the process processing process is reduced; the product quality is further ensured.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal material processing, in particular to a process for preparing a red copper square tube material. Background technique [0002] Copper material has the characteristics of good thermal conductivity, high electrical conductivity, non-magnetism, corrosion resistance, high temperature resistance, and good processability, and is widely used in the field of heat conduction and electric conduction; the copper square tube is used as a tube for electric furnace, and has the advantages of high efficiency and energy saving. [0003] Special-shaped copper square tubes have special requirements: high tolerance precision of inner and outer diameters: ±0.10, and the ordinary national standard is ±0.25; at the same time, the radius of the inner and outer fillets is required to be R≤1mm, and the ordinary national standard is outer R≤4mm and inner R≤3mm. [0004] The copper square tube follows the tradition...

AI Technical Summary

Problems solved by technology

[0004] The copper square tube follows the traditional process: the last round of drawing the circular tube to the square tube, the radius R of the rounded corner of the square tube is too large (up to 4mm), the center part of the outer dimension collapses (about -0.50mm), and the inner dimension non-guaranteed issues

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