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Manufacturing method of ultrathin high-purity rhenium foil

A manufacturing method and high-purity technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as low production efficiency, difficult processing, and inability to guarantee product surface quality, and achieve the effect of eliminating work hardening

Active Publication Date: 2016-11-09
中铼新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of science and technology, in practical applications, the requirements for the purity of rhenium sheets are getting higher and higher, and the thickness of rhenium sheets is also required to be thinner and thinner. The method is difficult to process, and even it is difficult to produce rhenium sheets with a thickness of less than 0.1mm. The annealing efficiency is low, the production efficiency is too low, and the surface quality of the product cannot be guaranteed.

Method used

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  • Manufacturing method of ultrathin high-purity rhenium foil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 A kind of manufacturing method of ultra-thin high-purity rhenium foil

[0031] Including the following steps:

[0032] 1) Raw material preparation: High-purity rhenium powder with a purity of 99.993% and a Fisherman particle size of 3 μm was processed by radio frequency plasma spheroidization to prepare a purity of 99.993%, a spheroidization rate of 90%, an average particle size of 15 μm, uniform appearance, and oxygen High-purity spherical rhenium powder with a content of 0.045%.

[0033] 2) Preparation of pure rhenium compact: using a powder rolling mill, add 0.5% by mass fraction of special binder (isoparaffinic hydrocarbon) to the high-purity spherical rhenium powder, at a rolling force of 25T and a powder rolling temperature of 20°C , rolling a thin pure rhenium compact with a thickness of 1.8mm, a width of 150mm, and a length of 300mm.

[0034] 3) Sintering: The thin pure rhenium compact is sintered at high temperature in a vacuum furnace, the sinte...

Embodiment 2

[0036] Embodiment 2 A kind of manufacturing method of ultra-thin high-purity rhenium foil

[0037] Including the following steps:

[0038]1) Preparation of raw materials: High-purity rhenium powder with a purity of 99.99% and a Fisherman particle size of 7 μm was processed by radio frequency plasma spheroidization to prepare a purity of 99.99%, a spheroidization rate of 85%, an average particle size of 10 μm, uniform appearance, and oxygen High-purity spherical rhenium powder with a content of 0.046%.

[0039] 2) Preparation of pure rhenium compact: using a powder rolling mill, add 0.8% of a special binder (isoparaffinic hydrocarbon) to the high-purity spherical rhenium powder at a rolling force of 25T and a powder rolling temperature of 60°C , rolling a thin pure rhenium compact with a thickness of 1.5mm, a width of 140mm, and a length of 280mm.

[0040] 3) Sintering: use a vacuum furnace to sinter the thin pure rhenium compact at high temperature, the sintering temperature...

Embodiment 3

[0042] Embodiment 3 A kind of manufacturing method of ultra-thin high-purity rhenium foil

[0043] Including the following steps:

[0044] 1) Raw material preparation: High-purity rhenium powder with a purity of 99.995% and a Fischer particle size of 10 μm was processed by radio frequency plasma spheroidization to prepare a purity of 99.995%, a spheroidization rate of 95%, an average particle size of 13 μm, uniform appearance, and oxygen High-purity spherical rhenium powder with a content of 0.045%.

[0045] 2) Preparation of pure rhenium compact: use powder rolling mill, add 1.2% mass fraction of special binder (isoparaffinic hydrocarbon) to high-purity spherical rhenium powder, under rolling force 25T, powder rolling temperature 100 ℃ , rolling a thin pure rhenium compact with a thickness of 1.2mm, a width of 160mm, and a length of 250mm.

[0046] 3) Sintering: The thin pure rhenium compact is sintered at high temperature in a vacuum furnace, the sintering temperature is 2...

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Abstract

The invention discloses a manufacturing method of a ultrathin high-purity rhenium foil. The manufacturing method comprises the following steps: 1) raw material preparation: firstly, high-purity rhenium powder performs the radio-frequency plasma spheroidizing treatment to obtain high-purity spherical rhenium powder or similarly spherical rhenium powder easy to mold by rolling; 2) pure rhenium pressing blank preparation: adhesive is added in the high-purity rhenium powder after the spheroidizing treatment; and a pure rhenium pressing blank is rolled by using a powder rolling mill; 3) sintering: the pure rhenium pressing blank is sintered at high temperature by a vacuum furnace or other forms to prepare a crystal-uniform pure rhenium plate blank; and 4) continuous rolling and annealing: the pure rhenium plate blank adopts multi-roller rolling mill and annealing linked continuous rolling; and a lubricating agent is coated on the surface of the pure rhenium plate blank for continuous rolling and annealing to obtain a finished rhenium foil with a needed size. The manufacturing method has such advantages as short rolling flow, high annealing efficiency and good surface quality.

Description

technical field [0001] The invention belongs to the field of powder metallurgy preparation, in particular to a method for manufacturing ultra-thin high-purity rhenium foil. Background technique [0002] Metal rhenium sheets are used as substrates to make various high-temperature structural parts, high-temperature heaters, special-shaped parts, etc., and are widely used in cutting-edge fields such as aviation, aerospace, atomic energy, ultra-high temperature alloys, semiconductor vacuum coating, and high-temperature thermal fields. [0003] Metal rhenium has the characteristics of high density, high melting point, excellent high-temperature strength and high-temperature plasticity. In the process of making metal rhenium sheets, it has a high melting point, a particularly fast hardening speed, and a large elastic aftereffect. It is not easy to process, especially not easy to process. into a metal sheet with a thickness of less than 0.1mm. With the development of science and t...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/18B22F3/24
CPCB22F3/18B22F3/24B22F2998/10B22F2003/248B22F1/065B22F1/14B22F1/10B22F3/10
Inventor 扶元初杨海兵杨世民
Owner 中铼新材料有限公司
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