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A kind of preparation method of cemented carbide cutting tool material

A technology of cemented carbide and knives, which is applied in the field of preparation of materials for cemented carbide slitting knives. It can solve the problems of residual dust, difficulty in mixing uniformly, and the quality of cemented carbide, so as to reduce danger and pollution and improve the use of Quality and the effect of reducing potential safety hazards

Active Publication Date: 2016-07-27
技锋精密刀具(马鞍山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the use of rubber technology in the prior art to mold cemented carbide, ash powder will remain, which will affect the quality of the product or use paraffin as a molding agent, which is difficult to mix evenly in the mixture, which will affect the performance and hardness of cemented carbide. Alloy quality and potential safety hazards, the invention provides a method for preparing cemented carbide cutting tool materials

Method used

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  • A kind of preparation method of cemented carbide cutting tool material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0044] (1) The diameters of selected specifications are 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, the heights are 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, and the mass ratios are 3%, 33%, 32.5%, 16%, and 15.5% ground baseballs 1200kg were added to a 300L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0045] (2) Select tungsten carbide with a particle size of 0.9 μm and 4.5 μm, spherical cobalt powder of 1.0 μm, and chromium carbide of 1.0 μm to form 300 kg of raw materials according to the mass ratio of 56:24:19.3:0.7. Step (1) The wet mill is used for mixing.

[0046] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 66L.

[0047] (4) Wet mill the mixture obtained in the above steps. After 12 hours of wet milling, 5.4 kg of ...

Embodiment 2

[0054] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0055] (1) 1200 kg of ground baseballs with a diameter of 5.5 cm and a height of 14.4 cm were selected and added to a 300 L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0056] (2) Select tungsten carbide with a particle size of 0.6 μm and 3 μm, spherical cobalt powder of 1.0 μm, and chromium carbide of 1.0 μm to form 300 kg of raw materials according to the mass ratio of 64:16:19.3:0.7. The wet mill described above was used for mixing.

[0057] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 66L.

[0058] (4) Wet mill the mixture obtained in the above steps. After 12 hours of wet milling, 5.4 kg of fully refined paraffin wax with a melting point of 58° C. was added, and then wet milling was continued. The total ti...

Embodiment 3

[0065] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0066] (1) Select 1300 kg of grinding baseballs with a diameter of 7.3 cm and a height of 15.6 cm, and add them to a 300 L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0067] (2) Select tungsten carbide with a particle size of 0.7 μm and 3.5 μm, spherical cobalt powder of 1.5 μm, and chromium carbide of 1.5 μm to form 300 kg of raw materials according to the mass ratio of 76.5:8.5:14.5:0.5. Step (1) The wet mill is used for mixing.

[0068] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 72 L.

[0069] (4) Wet mill the mixture obtained in the above steps. After 16 hours of wet milling, 6.0 kg of fully refined paraffin wax with a melting point of 58° C. was added, and then wet milling was continued. The total time ...

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Abstract

The invention discloses a preparation method of a material for a hard alloy cutting tool, belonging to the technical field of a hard alloy material of a paper cutting mechanical tool. Fully-refined paraffin wax with the melting point of 58 DEG C is used as a shaping agent in a preparation technological process of the conventional hard alloy, the paraffin wax can be directly added into a wet mill of mixed slurry after wet grinding and heating after being melted through heating, then the paraffin wax is subjected to wet grinding for more than 24h together with the mixed slurry, and then the operations of drying, granulating, pressing forming, shaping agent removal, and vacuum sintering are carried out to prepare the new material for the hard alloy cutting tool; and argon gas is adopted as carrier gas in a sintering process, and the paraffin wax is recovered and treated. According to the preparation method, the environment pollution is reduced, the potential safety hazard is eliminated, the pressing-molded performance of the hard alloy and the quality of the hard alloy material are ensured and the method has wide and long-term application prospect.

Description

technical field [0001] The invention relates to the field of cemented carbide materials for slitting cutters of paper-cutting machines, and more specifically, relates to a preparation method of materials for slitting cutters of cemented carbides. Background technique [0002] With the rapid development of industrial technology, cemented carbide tool materials have rapidly penetrated into all aspects of industrial production, gradually replacing the original high-speed steel materials, and have shown unparalleled excellent performance. In order to cater to the knives of the paper processing industry, the traditional slitting tool materials are changed from high-speed steel materials to hard alloy materials. The main component of cemented carbide is tungsten carbide (WC). Generally, cobalt is used as the bonding phase and produced by powder metallurgy. It has high wear resistance and strength. Its high wear resistance increases its service life by 10~ 30 times, greatly improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C29/06
Inventor 陈爱华李光明杨智凯邓敬新
Owner 技锋精密刀具(马鞍山)有限公司