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Method for preparing copper-iron alloy nanopowder

A technology of copper-iron alloy and nano-powder is applied in the field of preparation of copper-iron alloy nano-powder, which can solve the problems such as unreported preparation of nano-powder, and achieve the effects of eliminating sieving and classification, reducing particle size range and improving ignition effect.

Active Publication Date: 2020-09-04
SIRUI ADVANCED COPPER ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Nanopowder preparation of copper-iron alloy materials has not been reported so far

Method used

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  • Method for preparing copper-iron alloy nanopowder
  • Method for preparing copper-iron alloy nanopowder
  • Method for preparing copper-iron alloy nanopowder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In terms of percentage content, the percentage content of Fe element in the raw material is 5%, wherein Fe element is added in the form of CuFe master alloy;

[0041] Select an alumina crucible, control the vacuum degree р≤4Pa during melting; melt at a temperature of 1200°C, melt until the solution is melted, vacuum pour it into a water-cooled copper mold, and solidify into a copper-iron alloy ingot;

[0042] The copper-iron alloy ingot in step S2 is prepared into a Φ1.5mm wire through multi-pass drawing;

[0043] Vacuumize the electric explosion chamber, and the vacuum degree is lower than 5Pa;

[0044] The wire feeder feeds the prepared Φ1.5mm copper and iron wire between the anode and cathode of the electric explosion chamber, and then fills it with argon gas for protection and as a coolant for backup. The gas pressure is 0.2Mpa, and 3×10 5 V high-voltage electricity, the wire material instantly reaches a high temperature of tens of thousands of degrees, explodes af...

Embodiment 2

[0047] In terms of percentage content, the percentage content of Fe element in the raw material is 5%, wherein Fe element is added in the form of CuFe master alloy;

[0048] Choose an alumina crucible, control the vacuum degree р≤4Pa during melting; melt at a temperature of 1300°C, melt until the solution is melted, and vacuum pour it into a water-cooled copper mold to solidify into a copper-iron alloy ingot;

[0049] The copper-iron alloy ingot in step S2 is prepared into a Φ1.5mm wire through multi-pass drawing;

[0050] Vacuumize the electric explosion chamber, and the vacuum degree is lower than 5Pa;

[0051] The wire feeder sends the prepared Φ1.5mm copper and iron wire between the anode and cathode of the electric explosion chamber, and then fills it with argon gas for protection and as a coolant for backup. The gas pressure is 0.3Mpa, and 4×10 5 V high-voltage electricity, the wire material instantly reaches a high temperature of tens of thousands of degrees, explodes ...

Embodiment 3

[0054] In terms of percentage content, the percentage content of Fe element in the raw material is 10%, wherein Fe element is added in the form of CuFe master alloy;

[0055] Choose a zirconia crucible, control the vacuum degree р≤4Pa during melting; melt at a temperature of 1400°C, melt until the solution is melted, vacuum pour it into a water-cooled copper mold, and solidify into a copper-iron alloy ingot;

[0056] The copper-iron alloy ingot in step S2 is prepared into a Φ1.5mm wire through multi-pass drawing;

[0057] Vacuumize the electric explosion chamber, and the vacuum degree is lower than 5Pa;

[0058] The wire feeder sends the prepared Φ1.5mm copper and iron wire between the anode and cathode of the electric explosion chamber, and then fills it with argon gas for protection and as a coolant for backup. The gas pressure is 0.3Mpa, and the release is 3.5×10 5 V high-voltage electricity, the wire material instantly reaches a high temperature of tens of thousands of degr...

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Abstract

The invention discloses a method for preparing copper-iron alloy nanopowder. The method comprises two steps of the preparation of a copper-iron alloy wire and the preparation of the copper-iron alloynanopowder, and the steps are specifically as follows: batching, vacuum casting, drawing and making wire, vacuuming, exploding and making powder, and collecting and grading. The copper-iron alloy powder prepared by an electrical explosion method is uniform in size, narrow in particle size range, generally between 40nm and 100nm, and the powder morphology is nearly spherical or polyhedral. The nanopowder prepared by the method has a relatively high yield, about 60%, and can realize industrial production.

Description

technical field [0001] The invention relates to the technical field of copper alloy materials for motor rotors, in particular to a method for preparing copper-iron alloy nanopowder. Background technique [0002] The preparation methods of nanopowders are generally divided into mechanical methods, physical methods and chemical methods. [0003] 1) Mechanical method: refers to the processing method of crushing large solids into required particle sizes by mechanical force. General mechanical methods include grinding, impact, airflow, ultrasonic and other methods. These methods are simple in process and can prepare some conventional methods that are difficult to obtain. However, the disadvantage is that the classification is too difficult, and the surface and interface of the prepared nano-powder are easily polluted by the mechanical crushing process, which limits its use. [0004] 2) Physical method: refers to the fact that no chemical changes occur during the powder preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/00C22C9/00C22C1/03B82Y40/00
CPCB22F9/14C22C9/00C22C1/03B82Y40/00B22F1/054B22F1/065Y02P10/25
Inventor 郭创立周斌王群王沛田东松孙君鹏梁建斌王文斌杨志懋
Owner SIRUI ADVANCED COPPER ALLOY CO LTD
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