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Method of producing porous metal thin titanium board

A technology of porous metal and porous titanium, applied in the field of preparation of porous metal thin titanium plate, can solve the problems of large thickness, difficult to reach, low porosity of porous titanium plate, etc. high effect

Active Publication Date: 2007-09-12
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The porous titanium plate prepared by the isostatic pressing process has the characteristics of high strength, uniform air permeability, and uniform pore size distribution, but the porosity is low, generally 30%, and it is difficult to reach more than 50%.
[0005] At present, for the special requirements of some industrial filtration processes, it is necessary to provide porous titanium sheets with a thickness of less than 0.8mm and a porosity of more than 45%. The porous titanium sheets prepared by the above-mentioned powder rolling method and isostatic pressing method It is difficult to meet the requirements of large thickness and low porosity of titanium plate

Method used

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  • Method of producing porous metal thin titanium board
  • Method of producing porous metal thin titanium board

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The particle size range of titanium powder is 0.05mm-0.10mm. The material used for the mold is heat-resistant steel sprayed with zirconia layer on the surface. The height of the inner surface of the side riser is 0.32mm. The top cover of the mold is installed on the side riser. The volume of the mold cavity is 10050mm 3 , the cover is clamped with a clamp, and the titanium powder weighing 21 grams is filled from the powder loading chute, and its porosity is 55%; the mold with titanium powder is then sintered at a temperature of 900 ° C for 3 hours , the vacuum degree is 1×10 -3 pa, after the sintered porous titanium plate body is released from the mold, it is pressed by a rolling mill to a thickness of 0.28mm to obtain a metal porous thin titanium plate with a porosity of 48% and a thickness of 0.28mm.

Embodiment 2

[0024] Its process is the same as example 1.

[0025] Use 15 grams of metal titanium powder with a particle size of 0.05mm-0.10mm, put it into a heat-resistant steel mold with a size of φ200mm, and the height of the inner surface of the side riser: 0.3mm, and coat it with a zirconia layer, in a vacuum of 1× 10 -3 Pa, sintered in a vacuum sintering furnace at 950°C for 2 hours. After being released from the furnace, the titanium powder forms a porous titanium plate, which is successfully removed from the mold. After being rolled by a rolling mill to a thickness of 0.25mm, a size greater than φ200mm is obtained, and the porosity is 58. % porous titanium plate.

[0026] Example 2

[0027] Its process is the same as example 1.

[0028] Use 23 grams of titanium metal powder with a particle size of 0.05mm-0.10mm, put it into a heat-resistant steel mold with a size of φ200mm, and the height of the inner surface of the side riser: 0.4mm, and coat it with a zirconia layer at a vacuu...

Embodiment 3

[0030] Its process is the same as example 1.

[0031] Use 21 grams of metal titanium powder with a particle size of 0.05mm-0.10mm, put it into a heat-resistant steel mold with a size of φ200mm, and the height of the inner surface of the side riser: 0.35mm, and the vacuum degree is greater than 1× 10 - 3 Pa, sintered in a vacuum sintering furnace at 1100°C for 2 hours. After being released from the furnace, the titanium powder forms a porous titanium plate, which is successfully removed from the mold. After being rolled by a rolling mill, the size is larger than φ200mm, the thickness is 0.3mm, and the porosity is 50%. porous titanium plate.

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Abstract

The present invention relates to porous metal sheet for separating medium, and is especially preparation process of porous titanium metal sheet for filter separation in environment protection, food, beverage, medicine, petrochemical, metallurgy and other fields. The preparation process includes filling metal titanium powder into one box mold comprising horizontal bottom plate, side plates and top cover, vacuum sintering for metallurgical combination of titanium powder, demolding and pressing into required thickness. The porous titanium metal sheet has porosity of 45-60 % and thickness0.2-0.8 mm, and possesses excellent anticorrosive performance, light weight, high strength, homogeneous permeability and other features.

Description

technical field [0001] A method for preparing a metal porous thin titanium plate, relating to a metal porous thin plate used for media separation, especially a metal porous thin titanium that can be used for filtration and separation in the fields of environmental protection, food, beverage, medicine, petrochemical industry, metallurgy, etc. Plate preparation method. Background technique [0002] Using titanium powder as raw material, adopting special molding process and sintering at high temperature, the metal porous thin titanium plate is distributed with a large number of open pores with uniform structure. It is used as a filter element with low filtration resistance, good permeability, high temperature resistance and corrosion resistance. , long service life, high mechanical strength, easy regeneration, suitable for gas and liquid filtration of various media. Such as sterilization and filtration in beverage, food and brewing industries; filtration of industrial acid-bas...

Claims

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Application Information

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IPC IPC(8): B22F3/16
Inventor 奚正平张健汤慧萍葛渊吴贤李程
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH