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Manufacturing method for large tantalum plate

A large-size, plate technology, applied in the field of preparation of large-size tantalum plates, can solve the problems such as the inability to continuously and stably produce large-size tantalum plates, and achieve the effects of excellent mechanical properties, good surface quality and simple process flow

Active Publication Date: 2014-12-03
西安诺博尔稀贵金属材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the processing technology of billet rolling first, and then finished product rolling. Through the control and optimization of the rolling process and annealing system, a large-size tantalum plate with good surface quality, high flatness and excellent mechanical properties is finally obtained. It eliminates the technical bottleneck that the existing process cannot continuously and stably produce large-size tantalum sheets, and effectively promotes the development of tantalum materials

Method used

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  • Manufacturing method for large tantalum plate

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Effect test

Embodiment 1

[0023] The preparation method of the large-size tantalum plate of the present embodiment comprises the following steps:

[0024] Step 1. Heat the pure tantalum slab with a thickness of 50mm, a width of 220mm and a length of 248mm to 500°C, and then send the heated tantalum slab into a rolling mill for rolling. The rolling process is as follows: first heat The final tantalum slab is sent into the rolling mill along the length direction for 2-pass rolling until the length is 420mm, and the pass processing rates are 26% and 20.2% respectively, and then the rolled tantalum slab is rotated 90° before rolling. 10-pass rolling, the pass processing rate is 20%, 20%, 19%, 18%, 17%, 16%, 15%, 13.2%, 12%, 12%, resulting in a thickness of 5mm and a width of 420mm , a rolled slab with a length of 1300mm; the total processing rate of the rolling is 90%;

[0025] Step 2, using a leaf wheel to carry out surface grinding treatment on the rolled slab described in step 1;

[0026] Step 3, plac...

Embodiment 2

[0031] The preparation method of the large-size tantalum plate of the present embodiment comprises the following steps:

[0032] Step 1. Heat a pure tantalum slab with a thickness of 40mm, a width of 250mm, and a length of 360mm to 480°C, and then send the heated tantalum slab into a rolling mill for rolling. The rolling process is as follows: first heat The final tantalum slab is sent into the rolling mill along the length direction for 2-pass rolling until the length is 500mm, and the pass processing rate is 18% and 12.2% respectively, and then the rolled tantalum slab is rotated 90° before rolling. 7-pass rolling, the pass processing rates are 30%, 28%, 19%, 18%, 17%, 15%, 12%, respectively, to obtain a rolled slab with a thickness of 6mm, a width of 500mm, and a length of 1200mm ; The total processing rate of the rolling is 85%;

[0033] Step 2, using a leaf wheel to carry out surface grinding treatment on the rolled slab described in step 1;

[0034] Step 3, place the r...

Embodiment 3

[0039] The preparation method of the large-size tantalum plate of the present embodiment comprises the following steps:

[0040]Step 1. Heat the pure tantalum slab with a thickness of 45mm, a width of 163.8mm and a length of 200mm to 450°C, and then send the heated tantalum slab into a rolling mill for rolling. The rolling process is as follows: first The heated tantalum slab is sent into the rolling mill along the length direction and rolled for 5 passes until the length is 504mm. The tantalum slab was rotated 90° and then rolled for 9 passes. The pass processing rates were 30%, 27%, 27%, 21%, 20%, 18%, 15.8%, 12%, and 12%. A rolled slab with a thickness of 2.25mm, a width of 504mm, and a length of 1300mm; the total processing rate of the rolling is 95%;

[0041] Step 2, using a leaf wheel to carry out surface grinding treatment on the rolled slab described in step 1;

[0042] Step 3, place the rolled slab after the surface grinding treatment in step 2 in a vacuum annealing...

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Abstract

The invention provides a manufacturing method for a large tantalum plate, which comprises the following steps: 1, performing multi-pass cogging and rolling to a tantalum plate mold; 2, grinding and repairing the surface; 3, destressing and annealing; 4, performing multi-pass finished product rolling; and 5, performing annealing treatment to a finished product, and finally obtaining the large tantalum plate with the thickness of 0.5-2 mm, the width of 1000 mm-1300 mm, and the length of 1400 mm-2100 mm. The manufacturing method has the advantages of simple technological process, strong processing parameter controllability and easiness in industrialized mass production. The invention adopts the processing technique of first cogging rolling and then finished product rolling, controls and optimizes the rolling technique and the annealing schedule, finally obtains the large tantalum plate with good surface quality, high planeness and excellent mechanical property, solves the technical bottleneck that the present technique can not manufacture large tantalum plates continuously and stably, and really promotes the development of tantalum plates.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a method for preparing a large-size tantalum plate. Background technique [0002] Due to its high melting point, corrosion resistance, and good processing performance, metal tantalum is increasingly widely used in the fields of chemical industry, electronics, aerospace, and weapon assembly. It is mainly used to manufacture capacitors, heat exchangers, coolers, pipes, and gas turbines. Seals and armor-piercing ammunition type covers, etc. For the chemical industry that requires high material corrosion resistance, although the initial investment cost of metal tantalum equipment is high, due to its excellent durability and reliability, it is still used in conjunction with special steel, lead, glass, ceramics, enamel, etc. On the other hand, metal tantalum equipment has low maintenance and repair costs, and the equipment life is quite long, so metal tan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B15/00B21B37/74C22F1/18
Inventor 郭海生赵鸿磊董璞武宇宜楠刘鸣李红宇郑学军唐进
Owner 西安诺博尔稀贵金属材料股份有限公司
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