Refractory metal alloy ultrathin plate and foil, as well as producing method of plate

A technology of refractory metal and alloy foil, applied in other manufacturing equipment/tools, turbines, engine components, etc., can solve the problems of complex preparation process, low production efficiency and high production cost, achieve fewer process steps, improve production efficiency, The effect of reducing production costs

Active Publication Date: 2013-03-06
上海瑞钼特科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the complex preparation process of refractory metal alloy ultra-thin plates in the prior art, low production efficiency, high production cost, etc., and provide a refractory metal alloy ultra-thin plate and foil, and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation method of refractory metal alloy ultra-thin plate:

[0046] (1) Weigh 95% of tungsten powder (the average Fischer particle size of the powder is 2.5μm), 3% of the nickel powder (the average particle size of the powder is 3.5μm), 2% of the iron powder (the powder Fisherman's average particle size is 45 μm) as a raw material, add 3.5‰ of chemically pure ethanol relative to the total weight of the raw material, and mix in a mechanical powder mixer at a speed of 50 rpm for 1 hour until the mixture is uniformly mixed;

[0047] (2) Put the mixture into the powder barrel, put it in the oven, heat it to 120°C in the air atmosphere, and keep it warm for 30 minutes; at the same time, preheat the roll of the rolling mill to 120°C; take the powder barrel out of the oven, and put it in the rolling mill Continuous rolling is carried out in the middle, and the unit rolling pressure is 1.0 tons / cm 2 , the rolling speed is 8m / min, and the green slab with a thickness of 0.75...

Embodiment 2

[0052] Preparation method of refractory metal alloy ultra-thin plate:

[0053] (1) Weigh 95% of tungsten powder (the average Fischer particle size of the powder is 2.5μm), 3% of the nickel powder (the average particle size of the powder is 3.5μm), 2% of the iron powder (the powder Fisherman's average particle size is 45 μm) as a raw material, add 3.5‰ of chemically pure ethanol relative to the total weight of the raw material, and mix in a mechanical powder mixer at a speed of 10 rpm for 8 hours until the mixture is uniformly mixed;

[0054] (2) Put the mixture into the powder barrel, put it in the oven, heat it to 120°C in the air atmosphere, and keep it warm for 15 minutes; at the same time, preheat the roll of the rolling mill to 120°C; take the powder barrel out of the oven, and quickly place it in the Continuous rolling is carried out in the rolling mill, and the unit rolling pressure is 1.4 tons / cm 2 , the rolling speed is 5m / min, to obtain a green slab with a thickness...

Embodiment 3

[0059] Preparation method of refractory metal alloy ultra-thin plate:

[0060] (1) Weigh 95% of tungsten powder (the average Fischer particle size of the powder is 2.5μm), 3% of the nickel powder (the average particle size of the powder is 3.5μm), 2% of the copper powder (the powder Fisherman's average particle size is 50 μm) as a raw material, add chemically pure ethanol of 1.5‰ relative to the total weight of the raw material, and mix in a mechanical powder mixer at a speed of 50 rpm for 1 hour until the mixture is uniformly mixed;

[0061] (2) Put the mixture into the powder barrel, put it in the oven, heat it to 140°C in the air atmosphere, and keep it warm for 30 minutes; at the same time, preheat the roll of the rolling mill to 80°C; take the powder barrel out of the oven, and quickly put it in the Continuous rolling is carried out in the rolling mill, and the unit rolling pressure is 0.8 tons / cm 2 , the rolling speed is 10m / min, to obtain a green slab with a thickness ...

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Abstract

The invention discloses a refractory metal alloy ultrathin plate, a foil, and a producing method of the plate. The method for producing the ultrathin plate comprises the following steps of: (1) uniformly mixing the raw material, namely 50-99% of tungsten powder or molybdenum powder and 50-1% of one or more of the following materials of iron powder, nickel powder and copper powder with ethanol so as to obtain a mixture, wherein the usage of the ethanol is relatively lower than 0.5% of the total weight of the raw material; (2) preheating the mixture at 120-140 DEG C, and pressing after uniform heating, so that a raw slab with the thickness of 0.3-0.9millimeter is produced; and (3) sintering and cooling the raw slab under an anaerobic condition, so that the refractory metal alloy ultrathin plate is obtained. According to the producing method, a binding agent is not added, so that a step for removing the binding agent during the subsequent processes is reduced, the material purity is ensured, moreover, the production cost is also greatly lowered, and the production efficiency is increased. The refractory metal alloy ultrathin plate has a uniform internal organizational structure and has the thickness of 0.25-0.8millimeter, and one to six passes of rolling or short-time grinding only needs to be carried out subsequently, so that a high-specific-gravity foil product with the thickness of 10-50mu m can be produced.

Description

technical field [0001] The invention relates to the field of alloy preparation, in particular to a refractory metal alloy ultra-thin plate and foil, and a preparation method thereof. Background technique [0002] In the refractory metal material industry, refractory metals and their alloy materials with a plate thickness of less than 0.1mm are usually called foils; refractory metals and their alloy materials with a plate thickness of 0.1-3mm are called thin plates; material thickness Most of the sheets concentrated in the range of 0.1mm to 1mm are named "ultra-thin sheets". The existing production technologies of refractory metal alloy ultra-thin sheets at home and abroad mainly include powdered sintering method and traditional sintering and rolling method. [0003] The powdered sintering method is as described in the US patent (US 4605599A), but the material produced by this process has a low density, and a composition gradient and a density gradient are formed in the thic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F5/00C22C27/04
Inventor 王涛
Owner 上海瑞钼特科技股份有限公司
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