Thick-wall copper pipe production process

Abstract

The present invention discloses a thick-wall copper pipe production process, which comprises: 1, forging and stamping, wherein a furnace temperature is increased to 850-900 DEG C, a cooper ingot is forged and stamped, and thermal insulation is performed for 2-7 h; 2, reverse extrusion, wherein the copper ingot is subjected to position limitation by using an outer mold, the cooper rod is subjected to reverse extrusion through an inner mold to form a cooper pipe having the bottom, and the extruded cooper pipe is cooled to achieve a room temperature; and 3, cold extrusion, wherein the cooper pipe is subjected to cold extrusion to stretch so as to achieve the required size, and thermal insulation is performed for 3-4 h. According to the present invention, the manufacturing process is clear, the temperature and other parameters are reasonably controlled so as to produce the thick-wall cooper pipe meeting requirements by using the simple and conventional production process, and the quality is good.

Description

technical field [0001] The invention relates to a manufacturing process of a crystallizer copper tube, in particular to a manufacturing process of a thick-walled copper tube. Background technique [0002] The continuous casting process is the process of injecting molten steel into the crystallizer to continuously obtain casting slabs. It is an intermediate link connecting steelmaking and steel rolling, and is an important part of steelmaking production. The mold is an important part of the continuous casting machine in the smelter, and the copper tube of the mold is an important part of the mold. Since the high-temperature molten steel flows directly through the mold copper tube, in order to stabilize the continuous casting process and ensure the safety of equipment and operators, the mold copper tube is required to have good high temperature resistance, wear resistance and corrosion resistance. In order to improve the cooling effect of the crystallizer, it can be considere...

AI Technical Summary

Problems solved by technology

The wall thickness of the existing copper pipes is generally 25 mm or 30 mm, which cannot be slotted in post-processing at all, and once the wall thickness is increased to more than 57 mm, or even 70 mm, due to the Thickness increases, and the copper ingot is prone to cracking during the reverse extrusion process step, resulting in scrapping