A kind of forging method of high-purity niobium rod

Abstract

The invention relates to a method for forging high-purity niobium rods. The method comprises the following steps: the outer circumferential surface of niobium ingots is machined, and the turning size is allowed to have steps according to the surface quality, and the steps need to be transitioned with slopes; the niobium ingots are forged on a radial forging machine , the reduction is 20-30mm, the drawing speed is ≤1.5m / min, single-pass drawing, reciprocating forging is prohibited, the water pipe is turned on to spray and cool down throughout the process, dynamic real-time temperature measurement, the process temperature and the end temperature are ≤330°C, otherwise stop Forging, lift the billet away from the forging equipment, put it into water for 15-20 minutes, and reciprocate up and down. ≤1.2m / min, single-pass stretching, reciprocating forging is prohibited, water pipes are turned on to spray and cool down throughout the process, after forging and forming, transfer to a straightening machine for straightening while the remaining temperature is remaining, after the calibration is completed, lay the material flat and air-cooled, and stacking is prohibited. The forging method has no bluing and peeling phenomenon on the surface, improves the surface quality, improves the yield of finished products, and reduces the manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a forging method of a high-purity niobium rod that does not bluish on the surface during forging and can improve surface quality and yield. Background technique [0002] High-purity niobium has a series of excellent properties such as high melting point, low vapor pressure, good cold working performance, high chemical stability, strong resistance to liquid metal and acid corrosion, and is mainly used for niobium sputtering targets, superconducting accelerators and superconducting resonance cavities, etc. [0003] The traditional high-purity niobium ingot processing methods include extrusion, rolling, ordinary forging, etc. Due to thermal effects, the surface is often blue and peeled, which causes great difficulties for subsequent cleaning and reduces the yield. Manufacturing tooling is limited, forming size range is limited, ordinary press or ham...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-purity niobium rod forging method to solve the problems of surface quality, yield, production efficiency and tooling versatility