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Preparing method of tungsten and cobalt type hard alloy

A cemented carbide, tungsten-cobalt technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problem that cyclone materials are difficult to reuse, and achieve the effect of reducing production costs and realizing rational utilization

Inactive Publication Date: 2019-01-22
晋城富联鸿刃科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem in the prior art that the cyclone material produced by the spray drying process to prepare the tungsten-cobalt cemented carbide is difficult to reuse, the present invention provides a tungsten-cobalt cemented carbide that can use the cyclone material to produce qualified tungsten-cobalt cemented carbide. Process for the preparation of alloys

Method used

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  • Preparing method of tungsten and cobalt type hard alloy
  • Preparing method of tungsten and cobalt type hard alloy

Examples

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preparation example Construction

[0012] The invention provides a preparation method of tungsten-cobalt hard alloy, which can realize the reuse of the cyclone material collected by the cyclone separator in the spray drying process. It can be understood that during the granulation process using spray drying, the fine powder is collected by the cyclone separator under the action of the suction fan to form a cyclone material.

[0013] see figure 1 , the preparation method of the tungsten-cobalt cemented carbide provided by the invention mainly comprises the following steps:

[0014] S1: wet grinding and mixing of tungsten carbide powder and cobalt powder, then spray drying to obtain granulated material and cyclone material;

[0015] S2: Mix the granulated material and the cyclone material according to the ratio of mass ratio greater than or equal to 3.38, and mix them with the molding agent to obtain the mixed material; and

[0016] S3: extruding the mixture, drying, and sintering to obtain tungsten-cobalt hard...

Embodiment 1

[0021] In this example, the preparation method of tungsten-cobalt cemented carbide includes the following steps: wet grinding and mixing tungsten carbide powder and cobalt powder, spray drying to obtain granulated material and cyclone material, wherein the cyclone material is collected by a cyclone separator , the bulk density of the pellets is 3.3g / cm 3 ; Mix 55 parts by mass of granulated material, 5 parts by mass of cyclone material and 4.4 parts by mass of ethyl cellulose to obtain a mixture; extrude the mixture, dry and sinter to obtain a tungsten-cobalt cemented carbide.

Embodiment 2

[0023] The steps included in this embodiment and the preparation method of tungsten-cobalt cemented carbide in Example 1 are basically the same, the difference is that: the mixture consists of 50 parts by mass of granulated material, 10 parts by mass of cyclone material and 4.4 parts by mass of B It is obtained by mixing base cellulose.

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Abstract

The invention relates to a preparing method of tungsten and cobalt type hard alloy. The method includes the following steps of conducting spray-drying after wet-grinding and mixing tungsten carbide powder and cobalt powder to obtain a granulating material and a cyclone material, mixing the granulating material and the cyclone material according to the mass ratio larger than or equal to 3.38, mixing the mixture with a forming agent to obtain a mixed material, and conducting extrusion-forming, drying and sintering on the mixed material to obtain the tungsten and cobalt type hard alloy. By meansof the preparing method, the cyclone material is recycled, resource waste can be easily reduced, and production cost is saved.

Description

technical field [0001] The invention relates to the technical field of hard alloy production, in particular to a preparation method of tungsten-cobalt hard alloy. Background technique [0002] In the prior art, a spray drying tower is mostly used in the production of cemented carbide to dry and granulate the cemented carbide material after wet grinding. When spray drying, the cemented carbide material in slurry form is dispersed into small droplets under the action of pressure pump and atomizer. Under the action of the exhaust fan, the fine powder is collected by the cyclone separator to form cyclone material. Due to the small average particle size of the cyclone material, the powder filling degree is high during compression molding, the internal stress is large, the exhaust is difficult, and the formability is poor; the molding agent is not easy to wrap its surface during extrusion molding, and the formability is poor, which makes it difficult to rationally use the cyclone...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F9/08B22F1/00C22C1/05
CPCC22C1/051B22F9/04B22F9/08B22F2009/041B22F1/10
Inventor 边伟袁晓波薛桂全李尧王树宏孙娜贾耀波项凤鸣李军旗蒋益民
Owner 晋城富联鸿刃科技有限公司
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