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Powder sintering porous filter alloy, preparation method thereof and pre-pressing molding body for preparing powder sintering porous filter alloy

A pre-compression molding and powder technology, which is applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of difficult control of material pore size, excessive material tortuosity factor, and influence on permeability, etc., to achieve superior corrosion resistance, Good corrosion resistance, the effect of excellent corrosion resistance

Active Publication Date: 2014-12-10
CHENGDU INTERMENT TECH
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  • Claims
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Problems solved by technology

However, in the development process of new materials, in addition to the research on material composition, many problems in the process of sintering porosity are often faced, such as: sintering densification, material tortuosity after sintering is too large to affect permeability, material pore size hard to control etc.

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  • Powder sintering porous filter alloy, preparation method thereof and pre-pressing molding body for preparing powder sintering porous filter alloy
  • Powder sintering porous filter alloy, preparation method thereof and pre-pressing molding body for preparing powder sintering porous filter alloy
  • Powder sintering porous filter alloy, preparation method thereof and pre-pressing molding body for preparing powder sintering porous filter alloy

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Embodiment Construction

[0033] The preparation methods of the above-mentioned powder sintered Ni-based porous filter alloys of the present invention and the powder sintered Ni-based porous filter alloys obtained by these methods are specifically described below through four sets of experimental examples. Through these descriptions, those skilled in the art can clearly understand the outstanding features of the powder sintered Ni-based porous filter alloy of the present invention. The numbers of the experimental examples mentioned below are the same as the numbers corresponding to the "sample".

[0034]

[0035] See Table 1 for the raw material components and contents (in mass percent) of Experimental Examples 1 to 12 of the first group of experimental examples. Among them, the material use A refers to the prepared powder sintered porous filter alloy for liquid filtration; the material use B refers to the prepared powder sintered porous filter alloy used for gas filtration. In the experimental exam...

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Abstract

The invention discloses powder sintering porous filter alloy, a preparation method thereof and a pre-pressing molding body for preparing the powder sintering porous filter alloy. The powder sintering porous filter alloy is basically composed of, by mass, 14%-17% of Cr, 6%-10% of Fe, 0%-0.15% of C, 0%-0.5% of Si, 0%-1% of Mn, 0%-0.05% of Cu, 0%-5% of Al, 0%-1.5% of Ti and the balance Ni. The average pore size of the alloy is not larger than 60 micrometers, the relative permeability coefficient of the alloy is not smaller than 80 m<3> / m<2> kpa h. The powder sintering porous filter alloy has good chlorine corrosion resistance and good hydrogen chloride gas corrosion resistance (especially under high temperature), and is especially suitable for gas-solid separation and filtration under a high-temperature chlorine and hydrogen chloride system.

Description

technical field [0001] The invention relates to a sintered porous filter material, in particular to a powder sintered porous filter alloy, a preparation method of the alloy and a pre-pressed molded body for preparing the alloy. Background technique [0002] The applicant's current research on powder sintered porous filter materials focuses on the expansion of material application fields, improvement of material performance, exploration of pore-forming mechanism and optimization of preparation process. In the expansion of the application field of sintered porous filter materials, it is boldly proposed to develop corresponding ones that can meet the requirements of chemical stability (such as corrosion resistance) in this application environment and have good filtration performance for some specific and relatively harsh application environments. new material. Its significance is that if this type of new material is successfully developed, it will be able to bring precision fi...

Claims

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Application Information

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IPC IPC(8): B22F1/00C22C19/03C22C19/05B22F3/16B22F5/10B01D39/20
Inventor 高麟汪涛焦鹏鹤李波
Owner CHENGDU INTERMENT TECH
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