Powder sintered porous filter alloy, preparation method thereof and pre-compression molded body

A technology of pre-compression forming and powder, which is applied in the field of pre-compression molding and powder sintered porous filter alloy, which can solve the problems of excessive material tortuosity, difficult control of material pore size, and influence on permeability, etc., and achieve good corrosion resistance and anti-corrosion Excellent corrosion performance, excellent corrosion resistance effect

Active Publication Date: 2014-12-10
CHENGDU INTERMENT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Powder sintered porous filter alloy, preparation method thereof and pre-compression molded body
  • Powder sintered porous filter alloy, preparation method thereof and pre-compression molded body
  • Powder sintered porous filter alloy, preparation method thereof and pre-compression molded body

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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 a powder sintered porous filter alloy, a preparation method of the alloy and a pre-compression molded body for preparing the alloy. The alloy is basically prepared from the ingredients in percentage by mass: 14-17% of Cr, 15-17% of Mo, 0-7% of Fe, 0-4.5% of W, 0-2.5% of Co, 0-0.08% of C, 0-1% of Si, 0-1% of Mn, 0-0.35% of V, 0-0.04% of P, 0-0.03% of S, 0-5% of Al, 0-1.5% of Ti and the balance of Ni; when the alloy is used for filtering liquid, the average pore size is not greater than 20 microns, and the relative coefficient of permeability is not smaller than 0.2m<3>/m<2>.kPa.h; when the alloy is used for filtering gas, the average pore size is not greater than 60 microns, and the relative coefficient of gas permeability is not smaller than 80m<3>/m<2>.kPa.h. The alloy shows superior corrosion resistance in both an oxidizing system and a reducing system; secondly, the alloy is mainly resistant to wet chlorine, various oxidizing chlorides, chloride salt solutions, sulfuric acid and oxidizing salts. The alloy is suitable for being applied to the industrial fields of chemical industry, petrochemical industry, flue gas desulfurization, pulp and paper making, environmental protection and the like.

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): C22C19/03C22C19/05C22C1/08B22F3/02
Inventor 高麟汪涛焦鹏鹤李波王韬吴磊
Owner CHENGDU INTERMENT TECH
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