Method for industrially producing iron-based dispersion-strengthened material with low cost on large scale

一种弥散强化、大规模的技术，应用在金属材料领域，能够解决成本高、生产周期长、不易控制等问题，达到成本低、致密度高、性能好的效果

Inactive Publication Date: 2011-06-15
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the shortcomings of existing methods such as high cost, difficult control, and long production cycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: 0.1% Y 2 o 3 Dispersion strengthened iron material

[0028] (1) Add yttrium chloride to hydrochloric acid pickling waste liquid (the concentration of iron in the pickling waste liquid is 50g / L) to obtain the pickling waste liquid containing matrix metal ions and dispersed phase metal ions, and the matrix metal ions finally generate metal Elemental, dispersed-phase metal ions eventually generate dispersed-phase oxides; when the raw materials are converted into the mass of dispersed-phase oxides and matrix metals, the mass fraction of dispersed-phase oxides in the total alloy is 0.1%;

[0029] (2) will contain matrix metal ion and dispersed phase metal ion pickling waste liquid and enter pre-concentrator, concentrate waste acid, the concentration of the concentrated iron is 600g / L;

[0030] (3) The concentrated waste acid is atomized and sprayed into tiny droplets through the nozzle on the top of the roasting furnace, and the ferric chloride particles in the ...

Embodiment 2

[0033] Example 2: 1.0% Y 2 o 3 Dispersion strengthened iron material

[0034] (1) Add yttrium chloride to hydrochloric acid pickling waste liquid (concentration of iron in the pickling waste liquid is 100g / L), obtain the pickling waste liquid containing matrix metal ion and dispersed phase metal ion, matrix metal ion finally generates metal Elemental, dispersed-phase metal ions eventually generate dispersed-phase oxides; when the raw materials are converted into the mass of dispersed-phase oxides and matrix metals, the mass fraction of dispersed-phase oxides in the total alloy is 1%;

[0035] (2) will contain matrix metal ion and dispersed phase metal ion pickling waste liquid and enter pre-concentrator, concentrate waste acid, the concentration of the concentrated iron is 1000g / L;

[0036] (3) The concentrated waste acid is atomized and sprayed into tiny droplets through the nozzle on the top of the roasting furnace, and the ferric chloride particles in the concentrated aci...

Embodiment 3

[0039] Example 3: 2.0% Y 2 o 3 Dispersion strengthened iron alloy

[0040] (1) Add yttrium chloride to the waste hydrochloric acid pickling liquid (the concentration of iron in the waste pickling liquid is 150g / L), to obtain the waste pickling liquid containing matrix metal ions and dispersed phase metal ions, and the matrix metal ions finally generate metal Elemental, dispersed-phase metal ions finally generate dispersed-phase oxides; when the raw materials are converted into the mass of dispersed-phase oxides and matrix metals, the mass fraction of dispersed-phase oxides in the total alloy is 2%;

[0041] (2) will contain matrix metal ion and dispersed phase metal ion pickling waste liquid and enter pre-concentrator, concentrate waste acid, the concentration of the concentrated iron is 1500g / L;

[0042] (3) The concentrated waste acid is atomized and sprayed into tiny droplets through the nozzle on the top of the roasting furnace, and the ferric chloride particles in the c...

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PUM

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Abstract

The invention provides a method for industrially producing an iron-based dispersion-strengthened material, belonging to the technical field of oxide dispersion-strengthened materials. The invention provides a powder metallurgy preparation method of an iron-based dispersion-strengthened material with industrial application value and low cost. The method comprises the following steps of: adding yttrium chloride in industrial pickling wastewater, then treating the pickling wastewater by adopting a Ruthner-spray roasting process, atomizing the solution into tiny liquid drops in the spry roasting process, enabling the liquid drops to contact with gases and be dried to form powder, and heating the powder in the air to form a metal oxide; reducing the mixed powder of the obtained metal oxide in a hydrogen flow to obtain yttrium chloride dispersion-strengthened iron powder; and densifying the dispersion-strengthened iron powder to obtain a dispersion-strengthened iron material with high performance. The iron-based dispersion-strengthened material prepared with the method is simple in preparation process, can be prepared by directly adopting a steel mill pickling wastewater process and has low cost. In addition, the prepared iron-based dispersion-strengthened material has excellent performance and is suitable for production on a large scale.

Description

technical field [0001] The invention belongs to the field of metal materials and belongs to the category of oxide dispersion strengthening materials. In particular, it provides a low-cost large-scale industrial production of yttrium oxide iron oxide mixed oxide powder by using the recovery process of industrial hydrochloric acid pickling liquid, and then prepares iron-based dispersion strengthening materials through reduction and densification processes. [0002] The oxide dispersion-strengthened iron-based material of the present invention, because of its low cost and good performance, can be used in occasions requiring excellent high-temperature strength and creep strength, such as the first wall material of a nuclear fusion reactor, and can also be used to prepare low-cost, high-strength Performance powder metallurgy parts. Background technique [0003] With the rapid development of science and technology, various thermal machinery (gas turbines, jet engines, rockets), a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/26B22F3/16B22F3/20
CPCB22F3/12B22F3/14C22C33/0228B22F9/22B22F3/10B22F3/20B22F3/04B22F3/02
Inventor 郭志猛罗骥杨薇薇曹慧钦陈存广
Owner UNIV OF SCI & TECH BEIJING
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