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Manufacturing method of molybdenum granulated powder and molybdenum granulated powder

A manufacturing method and technology of granulated powder, applied in the manufacture of molybdenum granulated powder and the field of molybdenum granulated powder, to achieve the effect of excellent apparent density and fluidity

Active Publication Date: 2016-11-16
KK TOSHIBA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the finished product rate does not necessarily reach 100%

Method used

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  • Manufacturing method of molybdenum granulated powder and molybdenum granulated powder
  • Manufacturing method of molybdenum granulated powder and molybdenum granulated powder
  • Manufacturing method of molybdenum granulated powder and molybdenum granulated powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～2）

[0072] Prepare molybdenum powder (purity: 99.9% or more), polyvinyl butyral (PVB) powder as a binder, and ethanol. Ethanol was poured into a stainless steel container, and the polyvinyl butyral powder was added with stirring at room temperature to dissolve all the added polyvinyl butyral powder. It was confirmed that when the polyvinyl butyral powder was completely dissolved, it became a translucent solution. Then, a total of 40 kg of molybdenum powder was added at a time of 1 to 2 kg. When stirring the molybdenum powder, ethanol was added as necessary to the insufficient part due to the evaporation of ethanol. The molybdenum-containing solution using polyvinyl alcohol powder as a binder was set as Examples 1-5.

[0073] The conditions in the adjustment step of the conventional molybdenum-containing solution are shown in Table 1 below.

[0074] Table 1

[0075]

[0076] Next, using the molybdenum-containing solutions prepared in Examples 1 to 5 above, a granulation step...

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Abstract

The invention provides a method for producing molybdenum granulated powder, which is characterized in that it has the following steps: a step of injecting an organic solvent into a container; a step of adding polyvinyl butyral as a binder into the container; The process of preparing a molybdenum-containing solution while adding molybdenum powder with an average particle size of 1 to 10 μm into the above-mentioned organic solvent; When the average particle size of the molybdenum granulated powder is set to B (μm), put the above-mentioned molybdenum-containing solution into a spray dryer with A / B in the range of 50 to 700, and dry while dispersing the above-mentioned molybdenum-containing solution , so as to deploy the process of molybdenum granulated powder. According to the said structure, molybdenum granulated powder which has a target average particle diameter can be manufactured efficiently.

Description

technical field [0001] The invention relates to a method for manufacturing molybdenum granulated powder and molybdenum granulated powder. Background technique [0002] Molybdenum (Mo) is used in various fields as a heat-resistant material due to its high melting point of 2620°C. For example, it has been used as materials for thermal spraying, plates for sintering furnaces, electrode parts, stems for magnetrons, sputtering targets, etc. There is a method of supplying the material for thermal spraying as Mo powder or Mo rod. In addition, about a plate material, it may manufacture by sintering, and may manufacture by combining rolling and forging. In addition, electrode components and the like are sometimes processed from plate materials, wire processed by drawing, or manufactured by a sintering method. [0003] When Mo is used in this way, there are (1) methods of using Mo directly as powder, (2) methods of using Mo as a sintered sintered body, (3) methods of processing int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/02C22C27/04
CPCB22F9/026C22C1/045C22C27/04B22F1/00
Inventor 森冈勉青山齐
Owner KK TOSHIBA
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