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High-temperature-based WC powder production system and production process thereof

A production system and production process technology, applied in the direction of tungsten/molybdenum carbides, carbides, etc., can solve problems such as the preparation process is not stable enough, it is difficult to meet production needs, and the grain tungsten powder has many defects, and achieves great economic value. Improved quality and crystal integrity

Active Publication Date: 2018-05-01
ZHUZHOU SANXIN HARD ALLOY PRODN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of high-temperature base WC powder is not stable enough, and the grain tungsten powder produced has many defects, poor crystallization, and many distorted grains; it is difficult to meet production needs

Method used

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  • High-temperature-based WC powder production system and production process thereof
  • High-temperature-based WC powder production system and production process thereof
  • High-temperature-based WC powder production system and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The production system of embodiment 1 high temperature base WC powder

[0037] Such as figure 1 , the production system of the high-temperature-based WC powder of this embodiment includes a primary carbon distribution device 10, a molding device 20, a primary carbonization device 30, a crushing and screening device-40, a secondary carbon distribution device 50, and a secondary carbonization device 60 in sequence. , Crushing and screening device two 70, the primary carbon distribution device 10 is a hydrogen-free atmosphere, and the secondary carbon distribution device 20 is fed into a hydrogen protective atmosphere.

[0038] Wherein, the primary carbon distribution device 10 includes a mixer one and a feeder one, the primary carbonization device 20 includes a carbonization furnace one, the primary carbon distribution device 30 includes a mixer one and a feeder one, and the secondary carbon distribution device 30 includes a material mixing device Feeder 2 and feeder 2; ...

Embodiment 2

[0043] The production process of the production system of embodiment 2 high temperature base WC powder

[0044] The production process of the production system of the high-temperature base WC powder of the present embodiment, the specific operation steps are as follows:

[0045] S1. The FSSS particle size 12μm national standard zero grade WO 3 Carry out pre-grinding treatment for 4 hours in a double-cone mixer with a certain amount of rubber-lined stainless steel balls, and add carbon black through the feeder into a carbon distribution device to perform a carbon distribution; after mixing evenly, according to the mass fraction, Obtain a mixture 1 with a total carbon content of 15.5%;

[0046] S2. The mixture 1 in step S1 is pressed and formed on a press, and reacted in a hydrogen-free carbonization furnace for primary carbonization treatment. The temperature of the primary carbonization device is 1500 ° C, and the propulsion speed of mixture 1 is 15min / boat; the embryo is obt...

Embodiment 3

[0050] The production process of the production system of embodiment 3 high temperature base WC powder

[0051] The production process of the production system of the high-temperature base WC powder of the present embodiment, the specific operation steps are as follows:

[0052] S1. The FSSS particle size 14μm national standard zero grade WO 3 Carry out pre-grinding treatment in a double-cone mixer with a certain amount of rubber-lined stainless steel balls for 2 hours, and add carbon black through the feeder into the primary carbon distribution device to perform a primary carbon distribution; after mixing evenly, according to the mass fraction, Obtain a mixture 1 with a total carbon content of 14.8%;

[0053] S2. Compress the mixture one obtained in step S1, and carry out a carbonization treatment in a hydrogen-free carbonization furnace. The reaction temperature is 1650° C., and the propulsion speed of mixture one is 30 min / boat; blank material one is obtained;

[0054] S3...

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Abstract

The invention discloses a high-temperature-based WC powder production system and a production process thereof. The production system comprises a primary carbon preparing device, a forming device, a primary carbonizing device, a first crushing and sieving device, a secondary carbon preparing device, a secondary carbonizing device and a secondary crushing and sieving device in sequential connection,wherein the primary carbonizing device is hydrogen-free atmosphere; hydrogen gas protection atmosphere is introduced into the secondary carbonizing device. For the high-temperature-based WC powder production system, the once reduction and once carbonization of the high-temperature-based WC powder of a traditional production system are creatively changed into twice carbon preparation and twice carbonization; the carbonization equipment can be effectively protected; the complete development of the high-temperature-based WC powder can be effectively promoted, so that the quality of the WC powderis stable. The high-temperature-based WC powder production system uses the existing equipment; the system can be easily assembled; when the high-temperature-based WC powder is produced according to the production system and the production process, the quality of the high-temperature-based WC powder can be effectively improved; the yield of the WC powder can be improved; great economic values arerealized.

Description

technical field [0001] The invention relates to the field of preparation methods of cemented carbide, and more specifically, to a production system and a production process of high-temperature-based WC powder. Background technique [0002] In recent years, with the continuous expansion of the application field of cemented carbide, the material of cemented carbide has developed in two directions: ultra-coarse and ultra-fine. Ultra-coarse cemented carbide has been widely used in the fields of mining rock drilling tools, rolls and stamping dies . [0003] Cemented carbide has high hardness, strength, wear resistance and corrosion resistance, known as "industrial teeth", widely used in military industry, aerospace, machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields. With the continuous improvement of the industrial level, people put forward higher requirements for the performance of cemented carbide. As the main raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/949C22C29/08
CPCC01P2004/03C01P2004/61C01P2004/62C22C29/08
Inventor 孙五四张可夫
Owner ZHUZHOU SANXIN HARD ALLOY PRODN CO LTD
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