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Method for preparing tungsten-nickel-iron alloy thin plate

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

Active Publication Date: 2013-06-12
XIAN REFRA TUNGSTEN & MOLYBDENUM
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. Raw material mixing: nickel powder, iron powder, manganese powder and tungsten powder with a Fisher average particle size of 2.6μm (from tungsten powder with a Fisher average particle size of 2.0μm, tungsten powder with a Fisher average particle size of 2.5μm and Tungsten powder with a Fisher 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 at a mass ratio of 7.0:2.9:0.1:90 and placed in the mixture Mix evenly in the machine to obtain the mixture;

[0031] Step two, assembling 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, and then the rubber sleeve 1 is sealed, and the 7 sealed rubber sleeves 1 are placed in 8 stacked porous metals at intervals Between the partitions 2, then the bolt 3 is passed through the porous metal partition 2 and the elastic washer 5 used to control the thickn...

Embodiment 2

[0037] Step 1. Raw material mixing: nickel powder, iron powder, manganese powder and tungsten powder with a Fisher average particle size of 2.9μm (from tungsten powder with a Fisher average particle size of 2.1μm, tungsten powder with a Fisher average particle size of 2.9μm and Tungsten powder with a Fisher average particle size of 3.3μm 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 Mix evenly to obtain a mixture;

[0038] Step two, assembling 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, and then the rubber sleeve 1 is sealed, and the 5 sealed rubber sleeves 1 are placed in 6 stacked porous metals at intervals Between the partitions 2, then the bolt 3 is passed through the porous metal partition 2 and the elastic washer 5 used to control the thickness of the slab...

Embodiment 3

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

[0045] Step two, assembling 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, and then the rubber sleeve 1 is sealed, and the 8 sealed rubber sleeves 1 are placed in 9 stacked porous metals at intervals Between the partitions 2, then the bolt 3 is passed through the porous metal partition 2 and the elastic washer 5 used to control the thickness of the slab...

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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, and specifically relates to a preparation method of a tungsten-nickel-iron alloy thin plate. Background technique [0002] Tungsten-nickel-iron alloy sheets are increasingly 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-density alloy thin plates at home and abroad, but each has its own shortcomings: 1. Pressing and sintering billet plus rolling method, that is, the mixture is prepared by cold isostatic pressing and liquid phase sintering. Then vacuum heat treatment and multi-pass rolling processing are carried out; the thickness of the billet produced by this method is usually greater than 20mm, and the rolling to a thin plate with a thickness of less than 0.5mm requires repeated vacuum annealing and rolling; it can also be used to press t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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