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Method for forging high-purity niobium rods

A niobium rod, high-purity technology, applied in the field of non-ferrous metal processing, to achieve the effect of improving surface quality, reducing manufacturing costs, and increasing yield

Active Publication Date: 2020-06-05
HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of forging method of high-purity niobium bar, the high-purity niobium ingot of forging φ 330 mm on the radial forging machine of 1800 tons, forging into the niobium bar of φ 140 ± 1mm, concrete production process is as follows:

[0015] Step 1) Polish the outer circumference of the niobium ingot to φ320mm.

[0016] Step 2) Forge niobium ingots on a 1800-ton radial forging machine with R100 hammer to φ220mm, deformation process: φ320-φ300-φ270-φ240-φ220mm, drawing speed 1.3-1.5m / min, single-pass drawing , reciprocating forging is prohibited, the water pipe is turned on to spray and cool down throughout the process, and the temperature is measured dynamically in real time. When the forging reaches φ220mm and the temperature rises to 320°C, stop forging immediately.

[0017] Step 3) Lift the billet away from the forging equipment, put it in water for 15 minutes, and reciprocate up and down, and the depth of entering the water is ≥1.5m.

[0018] Step 4...

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PUM

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Abstract

The invention relates to a method for forging high-purity niobium rods. The method comprises the following steps that the outer circumference of a niobium ingot is subjected to turning, the turning size is based on the surface quality, steps are allowed to be included, and the steps are needed to be inclined and transitioned; and the niobium ingot is forged on a radial forging machine, the rollingreduction is 20-30mm, the pull-play speed is less than or equal to 1.5m / min, one-pull-play is carried out, reciprocating forging is forbidden, water pipe spraying cooling is started for a whole course, dynamic real-time temperature measurement is carried out, the process temperature and finishing temperature are less than and equal to 330 DEG C, if not, forging is stopped, billets are suspended away from forging equipment, underwater cooling is carried out for 15-20min, reciprocating jumping and moving up and down are carried out, the underwater penetration is greater than or equal to 0.5m, the billets after water cooling are continuous to be forged and formed on the radial forging machine, the rolling reduction is 5-10mm, the pull-play speed is less than or equal to 1.2m / min, one-pull-play is carried out, reciprocating forging is forbidden, water pipe spraying cooling is started for the whole course, after forging and forming, the billets are converted to a straightening machine forstraightening during lingering warmth, tiling, air cooling and material airing are carried out after straightening, and stacking is forbidden. According to the method for forging the high-purity niobium rods, no bluing and peeling phenomenon exists on the surface, the surface quality is improved, the yield is improved, and the manufacturing cost is reduced.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J1/04B21J1/06
CPCB21J5/002B21J1/04B21J1/06
Inventor 郑安雄高全德李海滨王金宝张凯亮陈伟叶玉娟薛正国王电赵东
Owner HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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