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Method for preparing tungsten-nickel-iron alloy thin plate

A technology of tungsten-nickel-iron alloy and thin plate, which is applied in the field of preparation of tungsten-nickel-iron alloy thin plate, can solve the problems of unreliable quality, low efficiency of thin slab pressing, and low processing plasticity of billet, so as to save raw materials, shorten production cycle and high yield Effect

Active Publication Date: 2012-03-21
XIAN REFRA TUNGSTEN & MOLYBDENUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In summary, the preparation of tungsten-nickel-iron alloy sheets by the existing technology has the following disadvantages: the thin slab has low pressing efficiency and unreliable quality; hydrogen protection sintering is generally used for blank sintering, and the processing plasticity of the blank after sintering is low, and it needs to be processed after vacuum heat treatment. Carry out rolling processing, and need to undergo repeated thermoplastic processing and vacuum annealing before transferring to cold rolling processing

Method used

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  • Method for preparing tungsten-nickel-iron alloy thin plate
  • Method for preparing tungsten-nickel-iron alloy thin plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Mixing of raw materials: mix nickel powder, iron powder, manganese powder and tungsten powder with a Fischer average particle size of 2.6 μm (from tungsten powder with a Fischer average particle size of 2.0 μm, tungsten powder with a Fischer average particle size of 2.5 μm and The tungsten powder with a Fischer average particle size of 3.0μm is uniformly mixed in a mass ratio of 1:2:2) according to the requirements of the 90WNiFe alloy grade, weighed in a mass ratio of 7.0:2.9:0.1:90 and placed in the mixture The mixture is uniformly mixed in the machine to obtain the mixture;

[0031] Step 2. Assemble the mold: such as figure 1 As shown, the mixture described in step 1 is evenly filled in the rubber sleeve 1 for cold isostatic pressing, then the rubber sleeve 1 is sealed, and the 7 sealed rubber sleeves 1 are placed at intervals of 8 stacked porous metal sleeves. Between the separators 2, the bolts 3 are then passed through the porous metal separators 2 and an...

Embodiment 2

[0037] Step 1. Raw material mixing: mix nickel powder, iron powder, manganese powder and tungsten powder with a Fischer average particle size of 2.9 μm (from tungsten powder with a Fischer average particle size of 2.1 μm, tungsten powder with a Fischer average particle size of 2.9 μm and Tungsten powder with an average particle size of 3.3 μm is uniformly mixed with a mass ratio of 1:2:2) according to the requirements of the 93WNiFe alloy grade, weighed with a mass ratio of 4.9:2.0:0.1:93 and placed in the mixer The mixture is uniformly mixed inside to obtain the mixture;

[0038] Step 2. Assemble the mold: such as figure 1 As shown, the mixture described in step 1 is evenly filled in the rubber sleeve 1 for cold isostatic pressing, then the rubber sleeve 1 is sealed, and the 5 sealed rubber sleeves 1 are placed at intervals of 6 stacked porous metal sleeves. Between the separators 2, the bolts 3 are then passed through the porous metal separators 2 and an elastic washer 5 fo...

Embodiment 3

[0044] Step 1. Raw material mixing: mix nickel powder, iron powder, manganese powder and tungsten powder with a Fischer average particle size of 3.1 μm (consisting of tungsten powder with a Fischer average particle size of 2.5 μm, tungsten powder with a Fischer average particle size of 3.0 μm and Tungsten powder with a Fischer average particle size of 3.5μm is uniformly mixed in a mass ratio of 1:2:2) according to the requirements of the 95WNiFe alloy grade, weighed in a mass ratio of 3.5:1.4:0.1:95 and placed in the mixer The mixture is uniformly mixed inside to obtain the mixture;

[0045] Step 2. Assemble the mold: such as figure 1 As shown, the mixture described in step 1 is evenly filled in the rubber sleeve 1 for cold isostatic pressing, then the rubber sleeve 1 is sealed, and the 8 sealed rubber sleeves 1 are placed at intervals on 9 stacked porous metal sleeves. Between the separators 2, the bolts 3 are then passed through the porous metal separators 2 and an elastic ...

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Abstract

The invention discloses a method for preparing a tungsten-nickel-iron alloy thin plate, which comprises: 1, weighing nickel powder, iron powder, manganese powder and tungsten powder with a fisher mean particle size of 2.6 to 3.1 micrometers as alloy nominal components, uniformly mixing in a mixer, and obtaining mixed material; 2, assembling a mold; 3, placing the assembled mold in a cold isostatic press for pressing, demolding, and obtaining a thin plate blank with a thickness of 1 to 3 millimeters; 4, sintering a liquid phase; and 5, performing cold-rolling processing on the sintered thin plate blank, and obtaining a tungsten-nickel-iron alloy thin plate with thickness of 0.1 millimeter to 0.8 millimeter. The method disclosed by the invention is simple, requires small equipment investment, causes light pollution and can realize batch production. When tungsten-nickel-iron plate prepared by the method disclosed by the invention has a high rolling processing performance, and the method can be widely used for producing high-precision tungsten-nickel-iron plates for use in medical electronic, nuclear military and like industrials.

Description

technical field [0001] The invention belongs to the technical field of alloy plate preparation, in particular to a preparation method of a tungsten-nickel-iron alloy thin plate. Background technique [0002] Tungsten-nickel-iron alloy sheets are widely used and demanded in aviation devices, radiation screens, ray baffles and chemical industries. At present, there are many technical methods for the production of tungsten-nickel-iron high specific gravity alloy sheets at home and abroad, but each has its own shortcomings: 1. Pressing and sintering billets plus rolling method, that is, the mixture is prepared by cold isostatic pressing and liquid phase sintering to prepare billets, Then carry out vacuum heat treatment and multi-pass rolling production; the thickness of the billet produced by this method is usually greater than 20mm, and rolling to a thin plate with a thickness of less than 0.5mm requires repeated vacuum annealing and rolling; After the sintered billet is cut, ...

Claims

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Application Information

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IPC IPC(8): B22F3/16
Inventor 侯军涛淡新国李明强郭让民雷铁柱黄先明郭磊邓自南
Owner XIAN REFRA TUNGSTEN & MOLYBDENUM