Novel high-consumption resistant multi-element rare earth tungsten electrode and preparation method thereof

A new technology of rare earth tungsten, which is applied in the field of tungsten electrode materials and its preparation, can solve the problems of difficult processing of high-content rare earth tungsten materials and low yield, and achieve the effects of shortening sintering time, improving product yield, and simplifying equipment and technology

Inactive Publication Date: 2012-07-25
SHANDONG HUAYE TUNGSTEN & MOLYBDENUM
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Problems solved by technology

[0006] In the present invention, the rare earth tungsten electrode replaces the radioactive thorium with various rare earth elements, and adds Re to improve the plastic processing performance. 2 o 3 The adoption of the new SPS process not

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  • Novel high-consumption resistant multi-element rare earth tungsten electrode and preparation method thereof
  • Novel high-consumption resistant multi-element rare earth tungsten electrode and preparation method thereof
  • Novel high-consumption resistant multi-element rare earth tungsten electrode and preparation method thereof

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the technical scheme of the present invention and the traditional process method.

[0019] In a new type of high-durability multi-component rare earth tungsten electrode, the weight ratio of rare earth is Re 2 o 3 : La 2 o 3 : CEO 2 : Y 2 o 3 = 1:2:2:6, the other is W, and the composite rare earth tungsten electrode with a total content of 2.2% is studied through the SPS preparation process, and compared with the traditional "pressing + vertical melting sintering" process, the specific content is as follows:

[0020] Such as figure 1 , described in the process flow chart of the present invention: the invention includes the following steps: 1. Doping, 2. Reduction, 3SPS sintering, 4 swaging, 5 drawing, 6 polishing, and inspection.

[0021] Wherein, in the doping step, a liquid-solid doping method is adopted. Make a solution of rare earth nitrate and deionized water, put a certain weight of ...

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Abstract

The invention discloses a novel high-consumption resistant multi-element rare earth tungsten electrode and a preparation method thereof. The materials contain four rare earth oxides, i.e. Re2O3, La2O3, CeO2 and Y2O3 in the weight ratio of 1:2:2:6, wherein the total content of the four rare earth oxides is 1.0 to 3.0 percent of the weight percentage of total metal. The preparation method comprises the following steps of: adenosine triphosphate (ATP) doping, two-stage hydrogen reduction, spark plasma sintering (SPS), and machining the materials into electrodes with various specifications through rotary forging and drawing, wherein the rotary forging cogging temperature is 1,550 to 1,600 DEG C. The electrode is high in density, good in welding performance, reasonable in preparation process, high in material yield and obvious in energy-saving effect, and harmful gas is not generated in a using process of the electrode.

Description

technical field [0001] The invention relates to a tungsten electrode material containing four rare earth elements and a preparation method thereof. The electrode can be used in inert gas shielded welding, plasma welding, cutting and spraying, or in special electric light sources. Background technique [0002] Tungsten electrodes are the key materials used in inert gas shielded welding and plasma welding, cutting, spraying and other equipment. At present, thoriated tungsten electrodes (including ThO 2 ) and cerium tungsten electrodes (containing CeO 2 ), in addition to a small amount of lanthanum tungsten electrodes and yttrium tungsten electrodes. [0003] The above rare earth tungsten electrode materials have their own advantages and disadvantages: thorium is a radioactive element, so the production and use of thoriated tungsten electrodes will bring radioactive hazards to the environment and human health. Cerium tungsten electrode (containing CeO 2 ) has good processing...

Claims

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Application Information

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IPC IPC(8): C22C27/04B22F1/00B22F3/105B22F3/24B22F9/22
Inventor 于爱芳
Owner SHANDONG HUAYE TUNGSTEN & MOLYBDENUM
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