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Anti-erosion molybdenum alloy electrode and manufacturing method thereof

A manufacturing method and molybdenum alloy technology, applied in electric furnaces, furnace types, furnaces, etc., can solve the problems of limited service life of pure molybdenum electrodes, and achieve the effects of improving corrosion resistance, good processing performance and easy operation.

Active Publication Date: 2019-02-05
XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application of electric melting furnaces, the service life of domestic pure molybdenum electrodes is very limited. The shortest life can only survive for 2-3 months, and the longer life is only about 3 years.

Method used

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  • Anti-erosion molybdenum alloy electrode and manufacturing method thereof
  • Anti-erosion molybdenum alloy electrode and manufacturing method thereof
  • Anti-erosion molybdenum alloy electrode and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Take by weighing 80kg molybdenum raw material, this molybdenum raw material is the molybdenum dioxide prepared by one-time reduction of high-purity molybdenum trioxide, after taking by weighing 6kg zirconium nitrate and appropriate amount of deionized water to mix, heat and stir to make it dissolve completely, then remove Dilute to 8L with deionized water to obtain zirconium nitrate solution;

[0038](2) Place the weighed molybdenum dioxide in a stainless steel double cone vacuum atomization doping pot, and rotate at a speed of 27HZ; nitrogen is used as a carrier gas, and the stainless steel double cone vacuum is injected at a pressure of 0.25MPa to 0.45MPa. Spray the atomized zirconium nitrate solution into the atomization doping pot for 30 minutes, then open the steam valve, adjust the steam pressure to 0.12-0.2 MPa, and carry out vacuum drying for 3 hours to obtain MoO 2 -ZrO 2 powder;

[0039] (3) the above MoO 2 -ZrO 2 Send the powder into the reduction fur...

Embodiment 2

[0047] (1) Take by weighing 80kg molybdenum raw material, this molybdenum raw material is the molybdenum dioxide prepared by one-time reduction of high-purity molybdenum trioxide, after weighing 9kg zirconium nitrate and appropriate amount of deionized water to mix, heat and stir to make it dissolve completely, then remove Dilute to 8L with deionized water to obtain zirconium nitrate solution;

[0048] (2) Place the weighed molybdenum dioxide in a stainless steel double cone vacuum atomization doping pot, and rotate at a speed of 27HZ; nitrogen is used as a carrier gas, and the stainless steel double cone vacuum is injected at a pressure of 0.25MPa to 0.45MPa. Spray the atomized zirconium nitrate solution into the atomization doping pot for 30 minutes, then open the steam valve, adjust the steam pressure to 0.12-0.2 MPa, and carry out vacuum drying for 3 hours to obtain MoO 2 -ZrO 2 powder;

[0049] (3) the above MoO 2 -ZrO 2 Put the powder into the reduction furnace, and ...

Embodiment 3

[0057] (1) Take by weighing 80kg molybdenum raw material, this molybdenum raw material is the molybdenum dioxide prepared by one-time reduction of high-purity molybdenum trioxide, after taking by weighing 11kg zirconium nitrate and appropriate amount of deionized water to mix, heat and stir to make it dissolve completely, then remove Dilute to 8L with deionized water to obtain zirconium nitrate solution;

[0058] (2) Place the weighed molybdenum dioxide in a stainless steel double cone vacuum atomization doping pot, and rotate at a speed of 27HZ; nitrogen is used as a carrier gas, and the stainless steel double cone vacuum is injected at a pressure of 0.25MPa to 0.45MPa. Spray the atomized zirconium nitrate solution into the atomization doping pot for 30 minutes, then open the steam valve, adjust the steam pressure to 0.12-0.2 MPa, and carry out vacuum drying for 3 hours to obtain MoO 2 -ZrO 2 powder;

[0059] (3) the above MoO 2 -ZrO 2 Put the powder into the reduction fu...

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Abstract

The invention discloses an anti-erosion molybdenum alloy electrode and a manufacturing method thereof. The anti-erosion molybdenum alloy electrode is prepared by means of solid-liquid doping and multi-element ball-milling doping. The recrystallization temperature of the electrode is higher than 1300 DEG C, the microstructure of the electrode is uniform crystal grains, the dimensions of which are 20-70 [mu]m, and the electrode is prepared from the following components in percent by weight: 3-5wt% of ZrO2, 0.8-1.2wt% of Si, 0.1-0.5wt% of B, 0.001-3wt% of GeO2, 0.001-3wt% of SnO2, 0.001-3wt% of Bi2O3, 0-5wt% of W and 0-4wt% of Al2O3 and the balance of Mo and inevitable impurities. By controlling the content of zirconium oxide and the proportion of silicon and boron in a Mo-Si-B alloy reasonably, the alloy has good anti-erosion capacity, high recrystallization temperature and high-temperature behavior and also has good processing capacity. In addition, other targeted microelements are alsodoped in the molybdenum alloy electrode, so that the anti-erosion capacity to different molten glass is improved.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to an anti-corrosion molybdenum alloy electrode and a manufacturing method thereof. Background technique [0002] Due to the rapid development of the application of electric melting technology in glass furnaces, the demand for heating elements-electrodes of glass electric melting furnaces is also increasing day by day. The importance of molybdenum metal as the preferred material for electrodes is self-evident. Although molybdenum metal has many excellent properties, such as high strength, high hardness, high temperature resistance, strong wettability with glass liquid and high current density. However, with the development of science and technology, the requirements for glass products are getting higher and higher, which also puts forward more and more stringent requirements for the high temperature performance of molybdenum metal. Obviously, pure molybdenum me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/05C22C1/10B22F9/22B22F1/00B22F3/04B22F3/10B22F3/26C03B5/027
Inventor 刘文迪黄羽陈会培李斌玲
Owner XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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