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Hard alloy material for cigar knife and preparation method of hard alloy material

A technology of cemented carbide and cigar cutters, which is applied in the field of cemented carbide materials and can solve problems such as high cost of use, easy to absorb dirt, and curling of the cutting edge.

Pending Publication Date: 2022-03-29
CHENGDU MET CERAMIC ADVANCED MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of cemented carbide material for cigar cutters, to solve the problem that the hardness of cigar cutter materials prepared in the prior art is low, the blade is easy to passivate or the cutting edge is curled, the replacement frequency of the blade is high, and it is easy to absorb dirt and affect the quality of the cigar cutter. The overall quality of the cigar cutter and the user experience, and the technical problem of high cost

Method used

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  • Hard alloy material for cigar knife and preparation method of hard alloy material
  • Hard alloy material for cigar knife and preparation method of hard alloy material
  • Hard alloy material for cigar knife and preparation method of hard alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Include the following steps:

[0048] (1) mixing: mixing each raw material according to the proportioning ratio to obtain a homogeneous mixture;

[0049] Adopt ball mill to carry out wet ball milling, ball milling time is 90 hours, add molding agent during ball milling, molding agent adopts paraffin, the adding amount of molding agent is 1.5% of raw material gross weight; Ball milling medium is hexane, and the addition amount of ball milling medium is raw material 30% of the weight; the grinding ball used is a grinding rod, and its consumption is 3 times of the total weight of the raw material;

[0050] (2) dry granulation: dry and granulate the mixture obtained in step (1) to obtain powder;

[0051] Granulation by spray drying: the drying medium is high-temperature nitrogen, the oxygen content in the spray drying tower is guaranteed to be less than 2%, the spray pressure is 1500kPa, the nozzle size is 1.5mm, and the outlet temperature is controlled at 98°C;

[0052] ...

Embodiment 2

[0058] Include the following steps:

[0059] (1) mixing: mixing each raw material according to the proportioning ratio to obtain a homogeneous mixture;

[0060] Use a ball mill to carry out wet ball milling, the ball milling time is 60 hours, add a molding agent during ball milling, the molding agent is PEG, and the amount of molding agent added is 2% of the total weight of the raw materials; the ball milling medium is ethanol, and the amount of the ball milling medium is the weight of the raw material 40% of that; the grinding balls used are cemented carbide balls, the amount of which is 4 times the total weight of raw materials;

[0061] (2) dry granulation: dry and granulate the mixture obtained in step (1) to obtain powder;

[0062] Spray drying granulation: the drying medium is high-temperature nitrogen to ensure that the oxygen content in the spray drying tower is less than 2%, the spray pressure is 1200kPa, the nozzle size is 1.2mm, and the outlet temperature is contro...

Embodiment 3

[0069] Include the following steps:

[0070] (1) mixing: mixing each raw material according to the proportioning ratio to obtain a homogeneous mixture;

[0071] Adopt ball mill to carry out wet ball milling, ball milling time is 30 hours, add molding agent during ball milling, molding agent adopts paraffin, the adding amount of molding agent is 3% of raw material gross weight; Ball milling medium is ethanol, and the addition amount of ball milling medium is raw material weight 30% of that; the grinding balls used are cemented carbide balls, and the amount used is 3 times the total weight of raw materials;

[0072] (2) dry granulation: dry and granulate the mixture obtained in step (1) to obtain powder;

[0073] Spray drying granulation: the drying medium is high-temperature nitrogen to ensure that the oxygen content in the spray drying tower is less than 2%, the spray pressure is 900kPa, the nozzle size is 0.8mm, and the outlet temperature is controlled at 93°C;

[0074] (3)...

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Abstract

The invention discloses a hard alloy material for cigar knives and a preparation method of the hard alloy material. The hard alloy material for the cigar knife is prepared from the following raw materials in percentage by weight: 88-95% of tungsten carbide powder; 0-10% of cobalt powder; 0-10% of nickel powder; 0-0.02% of high-purity carbon black powder; 0-0.3% of tungsten powder; 0-0.5% of tantalum carbide; 0-1% of chromium carbide; 0-0.5% of niobium carbide; 0-0.5% of aluminum nitride whisker; 0-0.5% of titanium nitride whiskers; the sum of the weight percentages of the raw materials is 100%. The hard alloy material has good hardness, wear resistance, toughness and strength and can be used for preparing the cigar knife blade, during use, the cutting edge is not prone to passivation or edge curling, tar is not prone to adhering to the blade, the blade replacement frequency is low, the overall quality of a cigar knife and the use experience of a user are greatly improved, and the cigar knife is suitable for popularization and application. And the use cost is reduced.

Description

technical field [0001] The invention relates to the field of hard alloy materials, in particular to a hard alloy material for cigar cutters and a preparation method thereof. Background technique [0002] Cigar is a kind of tobacco product, which is rolled from dried and fermented tobacco. When smoking, you need to use a professional cigar cutter to cut off the cigar head. Although this is a small pair of scissors, the manufacturer spares no effort The appearance design, materials and accessories of the car are spent on making it more beautiful, tasteful, and of course more expensive. [0003] At present, the material of the cigar cutter body on the market is stainless steel, high-speed steel and other iron-based materials. Although the processing of the material is relatively simple, the hardness of the texture is still relatively soft. If you use it for a long time or use it improperly, the blade will be easily blunted or curled. Under the same force, it will be more diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/02C22C49/14C22C47/14C22C101/16
CPCC22C49/02C22C49/14C22C47/14
Inventor 潘辉单成鲁攀杨成亮刘毅邱嵩颜焰刘强
Owner CHENGDU MET CERAMIC ADVANCED MATERIALS
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