Material for hard alloy slitting tool and preparation method of material

A cemented carbide and cutting tool technology, applied in the field of cemented carbide cutting tool materials and their preparation, can solve problems such as insufficient fatigue resistance and toughness of cemented carbide, high production cost, and increase of cemented carbide cost. , to achieve good uniformity and fluidity, fast drying, improve fatigue resistance and toughness

Active Publication Date: 2017-02-15
技锋精密刀具(马鞍山)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the fatigue resistance and toughness of the existing cemented carbide are not high enough; because the cobalt resources are limited and the market price of cobalt is high, the production cost of the cemented carbide remains high, and the cost of the cemented carbide is increased simultaneously; the existing All cemented carbides use Co as the binder; the raw materials should be fully mixed before drying; the existing cemented carbide graphite boats have the problems of stress deformation and insignificant stacking effect

Method used

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  • Material for hard alloy slitting tool and preparation method of material
  • Material for hard alloy slitting tool and preparation method of material
  • Material for hard alloy slitting tool and preparation method of material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 Shown, a kind of cemented carbide cutting tool material and preparation method thereof, comprises the following steps:

[0037] Step 1, batching: Fe, Co, Ni, Tic and WC are added to the wet mill for mixing; the new material is prepared from the following raw materials by weight percentage: Fe: 18%, Co: 8.0%, Ni: 4.0% , Tic: 8.0%, the balance is WC;

[0038] Step 2, wet grinding: add the raw materials prepared in step 1, wet grinding medium and molding agent together into the wet mill and mix evenly, and the wet grinding time is 24h-28h;

[0039] Step 3, drying and granulating: dry and granulate the wet-milled mixture in a spray drying tower;

[0040] Step 4, pressing: the dry and granulated mixture is pressed into shape by a press, and the pressure value is: 0.3MPa~1.0MPa;

[0041] Step 5, sintering: put the pressed blank into a graphite boat and put it in a vacuum sintering furnace, and sinter at a high temperature of 1360°C to 1420°C to make a new ...

Embodiment 2

[0048] Such as figure 1 Shown, a kind of cemented carbide cutting tool material and preparation method thereof, comprises the following steps:

[0049]Step 1, batching: Fe, Co, Ni, Tic and WC are added to the wet mill for mixing; the new material is prepared from the following raw materials by weight percentage: Fe: 20%, Co: 5.0%, Ni: 0.5% , Tic: 5.0%, the balance is WC;

[0050] Step 2, wet grinding: add the raw materials prepared in step 1, wet grinding medium and molding agent together into the wet mill and mix evenly, and the wet grinding time is 24h-28h;

[0051] Step 3: Vacuum dryer and powder making, dry the wet-milled mixture in a vacuum dryer, the vacuum degree is ≥0.95MPa, and the drying time is 8h-12h; the mixture is dried in a vacuum dryer and then powdered. Flour is sieved with 40 mesh to 80 mesh sieve;

[0052] Step 4, pressing: the dry and granulated mixture is pressed into shape by a press, and the pressure value is: 0.3MPa~1.0MPa;

[0053] Step 5, sinterin...

Embodiment 3

[0060] Embodiment 3 is basically the same as Embodiment 1 or 2. The difference is that the new material in step 1 is prepared from the following raw materials by weight percentage: Fe: 30%, Co: 5.0%, Ni: 0.5%, Tic: 10% , with a margin of WC.

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Abstract

The invention discloses a material for a hard alloy slitting tool and a preparation of the material. The preparation method comprises the procedures of ingredient proportioning, wet grinding, dry granulation or vacuum dry milling, pressing, sintering, quenching, cryogenic treatment and detection, specifically, Fe-Ni-Co of ingredients is in a binding phase, 5.0%-10% of Tic is added into the ingredients, and the ingredients are subjected to quenching and cryogenic treatment, so that the anti-fatigue performance and toughness of the hard alloy are improved, hardness of the hard alloy is improved, the service life of the tool is prolonged, and production cost can be effectively reduced while the requirement for using performance is met. The invention further discloses a special pressing graphite boat which can effectively reduce strain deformation and improve the stacking effect.

Description

technical field [0001] The invention relates to a material for a cemented carbide cutting tool and a preparation method thereof, in particular to a novel cemented carbide cutting tool used in the corrugated paper cutting production industry. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500°C , It still has high hardness at 1000 °C. Cemented carbide is widely used as tool material, such as turning tools, milling cutters, planers, drills, boring tools, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel, and can also be used for cut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05C22C1/10B22F1/00B22F3/02B22F3/10B22F3/24B22F5/00C22F1/16
CPCB22F1/0003B22F3/02B22F3/10B22F3/24B22F5/00B22F2003/248B22F2005/001C22C1/051C22C29/067C22C29/08C22F1/002C22F1/16
Inventor 李玲吴辰杨飞李光明
Owner 技锋精密刀具(马鞍山)有限公司
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