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Process for preparing consumable electrode for electric arc melting by utilizing CuCr alloy powder material

A consumable electrode and arc smelting technology, applied in the field of consumable electrode preparation, can solve the problems of uneven mixing of mixed powder, affecting the performance of contact materials, and increasing the temperature of the molten pool, achieving good uniformity and optimizing microscopic The effect of organizing and reducing the temperature of the molten pool

Pending Publication Date: 2021-03-09
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. During the mixing process of copper powder and chromium powder, due to the difference in powder fluidity, density and particle size, the mixed powder is mixed unevenly, which leads to segregation of the material after smelting;
[0004] 2. Greater arc energy is required during the smelting process, resulting in an increase in the temperature of the molten pool, causing large dendrites to appear in the ingot, and affecting the properties of the contact material

Method used

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  • Process for preparing consumable electrode for electric arc melting by utilizing CuCr alloy powder material
  • Process for preparing consumable electrode for electric arc melting by utilizing CuCr alloy powder material
  • Process for preparing consumable electrode for electric arc melting by utilizing CuCr alloy powder material

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Embodiment 1

[0030] Embodiment 1: A process for preparing consumable electrodes for arc smelting using CuCr alloy powder materials, specifically comprising:

[0031] Step 1: Preparation of CuCr alloy powder material

[0032] Prepare a CuCr alloy powder material with a chromium content of 1%wt; wherein, the CuCr alloy powder material is specifically CuCr alloy powder;

[0033] The specific preparation method of CuCr alloy powder is:

[0034] 1) Ingredients: by weight percentage, the percentage content of each element in the raw material is: Cr 1%, Cu balance, take the required copper powder and chromium powder for later use; wherein, the Cr element adopts 99.99% high-purity metal Chromium powder, Cu element adopts 99.99% high-purity metal copper powder;

[0035] 2) mixing: the spare copper powder and chromium powder were ball milled for 3 hours under vacuum to obtain mixed powder;

[0036] 3) Melting: melt the mixed powder obtained in step 2) in a vacuum induction melting furnace; specif...

Embodiment 2

[0044] Embodiment 2: A process for preparing consumable electrodes for arc smelting using CuCr alloy powder materials, specifically comprising:

[0045] Step 1: Preparation of CuCr alloy powder material

[0046] Prepare a CuCr alloy powder material with a chromium content of 40%wt; wherein, the CuCr alloy powder material is specifically CuCr alloy powder;

[0047] The specific preparation method of CuCr alloy powder is:

[0048] 1) Ingredients: by weight percentage, the percentage content of each element in the raw material is: Cr 40%, Cu balance, take the required copper powder and chromium powder for later use; wherein, the Cr element adopts 99.99% high-purity metal Chromium powder, Cu element adopts 99.99% high-purity metal copper powder;

[0049] 2) mixing: the spare copper powder and chromium powder were ball milled for 4 hours under vacuum to obtain mixed powder;

[0050] 3) Melting: melt the mixed powder obtained in step 2) in a vacuum induction melting furnace; spec...

Embodiment 3

[0058] Embodiment 3: A process for preparing consumable electrodes for arc smelting using CuCr alloy powder materials, specifically comprising:

[0059] Step 1: Preparation of CuCr alloy powder material

[0060] Prepare a CuCr alloy powder material with a chromium content of 50%wt; wherein, the CuCr alloy powder material is specifically CuCr alloy powder;

[0061] The specific preparation method of CuCr alloy powder is:

[0062] 1) Ingredients: by weight percentage, the percentage content of each element in the raw material is: Cr 50%, Cu balance, take the required copper powder and chromium powder for later use; wherein, the Cr element adopts 99.99% high-purity metal Chromium powder, Cu element adopts 99.99% high-purity metal copper powder;

[0063] 2) mixing: the spare copper powder and chromium powder were ball milled for 5 hours under vacuum to obtain mixed powder;

[0064] 3) Melting: melt the mixed powder obtained in step 2) in a vacuum induction melting furnace; spec...

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Abstract

The invention provides a process for preparing a consumable electrode for electric arc melting by utilizing a CuCr alloy powder material. The process specifically comprises the following steps of preparing the CuCr alloy powder material with the chromium content of 1-50 wt%; putting the prepared CuCr alloy powder material into a rubber sleeve, carrying out cool isostatic pressing molding, and arrying out rubber sleeve demolding after molding to obtain a consumable electrode bar blank; carrying out vacuum sintering treatment on the consumable electrode bar blank; and smelting the consumable electrode in a vacuum consumable arc smelting furnace in a high-current and low-voltage mode. According to the process, the consumable electrode is formed by pressing alloy chips or alloy powder, the phenomenon that the mixed powder is unevenly mixed due to performance difference is avoided, meanwhile, arc energy needed for melting the consumable electrode in the arc smelting process is reduced, thetemperature of a molten pool is reduced, and the microscopic structure of the material is optimized.

Description

technical field [0001] The invention relates to the technical field of consumable electrode preparation, in particular to a process for preparing consumable electrodes for arc smelting using CuCr alloy powder materials. Background technique [0002] In the prior art, the process flow of copper-chromium alloy vacuum consumable arc smelting process for preparing consumable electrode rods includes: copper powder + chromium powder weighing—mixing—cold isostatic pressing—vacuum sintering—arc melting, wherein copper powder Chromium powder and chromium powder are prepared by electrolysis method and aluminothermic method respectively. Before powder mixing, chromium powder and copper powder are weighed according to a certain ratio and mixed in a mixer, and then prepared by cold isostatic pressing and vacuum sintering From Consumable Electrode Rods. But there is following defect in this technology: [0003] 1. During the mixing process of copper powder and chromium powder, due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C9/00B22F3/04B22F3/10B22F5/00C22B9/20
CPCB22F3/04B22F3/1007B22F5/00B22F2999/00C22B9/20C22C1/0425C22C9/00B22F2201/20Y02P10/25
Inventor 李鹏王小军张石松杨斌刘凯王文斌
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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