Manufacturing method for tantalum composite board equipment

Abstract

The invention provides a manufacturing method for a piece of tantalum composite board equipment; tantalum-titanium-steel or tantalum-copper-steel composite boards are taken as main materials of the tantalum equipment; a connecting pipe adopts steel lining tantalum; a sealing surface is the turned structure of titanium welding tantalum ring; titanium lining outer edge is welded on the inner titanium layer of the connecting pipe; a flange is welded on the steel pipe of the connecting pipe; after being welded, the flange welds the weld joint between the flange and the connecting pipe by silver brazing; turned sides of the titanium ring are welded on the silver brazing so that titanium is directly welded with the steel; the manner of welding vertical and annular weld joint of the tantalum equipment is as follows: when two tantalum composite boards are opposite to each other, tantalum-titanium or tantalum-copper at the welding part of two tantalum-titanium-steel or tantalum-copper-steel composite boards removes a narrow strip; a copper board or tantalum board is welded on the steel board; two steel base boards are welded; and a tantalum sticker wider than the weld joint is welded with two tantalum boards. The manufacturing method ensures that the tantalum in the tantalum composite board equipment is not directly welded with steel, so that the connection problem of tantalum and steel is solved.

Description

technical field [0001] The invention is manufactured with pressure vessel tantalum composite plate equipment, and belongs to the field of pressure vessel manufacture. Background technique [0002] Metal tantalum is a light gray metal with a slight blue color. It has excellent corrosion resistance in most inorganic acids and has important uses in the chemical industry. Except for hydrofluoric acid, fluorine, fuming sulfuric acid and alkali, it can almost resist Corrosion of all chemical media (including boiling point hydrochloric acid, nitric acid and sulfuric acid below 175°C). [0003] Tantalum has excellent corrosion resistance to dilute sulfuric acid below 75%, and can be used at any temperature; it can be used at 160-170°C for unaerated concentrated sulfuric acid, and 250-260°C for aerated concentrated sulfuric acid. In the equipment for preparing various inorganic acids, tantalum can be used to replace stainless steel, and the service life can be dozens of times longer...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the difficulties in the preparation of tantalum composite plate equipment and the shortage of quality control, and to make the manufacture of tantalum composite plate equipment with stable quality through the improvement of the manufacturing process and structural form of tantalum composite plate and lining

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