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Hard alloy saw web

A technology of cemented carbide and cemented carbide substrate, which is applied in the direction of metal sawing equipment, metal processing equipment, sawing machine tools, etc., can solve the problems of affecting the service life and cutting effect of saw blades, destroying dynamic balance, changing, etc. Achieve narrow grain size distribution, good hardness and strength, and good toughness

Inactive Publication Date: 2017-10-24
宁波妙力斯五金工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, grinding can easily cause changes in the original angle and damage the dynamic balance, which will affect the service life and cutting effect of the saw blade.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mixing: take the cemented carbide material and add it to the ball mill according to the parts by weight described in Example 1 in Table 1, wherein the grain size of the tungsten carbide powder is 0.3 μm, and the cobalt binder contains 2% Cr and 0.2% Re, and add 200ml of D70 solvent oil for wet grinding until the powder particle size is 1 μm to obtain a mixed slurry. After the mixed slurry is filtered, dry it at 100°C for 30 minutes to obtain a mixture;

[0047] Compression molding: under the condition of a pressure of 30MPa, the mixture is respectively put into the saw blade base mold and the saw blade sawtooth mold for press molding to obtain the saw blade base blank and the saw blade sawtooth blank;

[0048] Sintering: Quenching the saw blade substrate blank and the saw tooth blank, the quenching temperature is 820°C, and the quenching time is 5 minutes; after quenching, sintering is carried out in a vacuum, the sintering temperature is 1300°C, and 0.02 % grain growth...

Embodiment 2

[0053] Mixing: take the cemented carbide material and add it to the ball mill according to the parts by weight described in Example 2 in Table 1, wherein the grain size of the tungsten carbide powder is 0.32 μm, and the cobalt binder contains 2.1% Cr and 0.23% Re, and add 210ml of D70 solvent oil for wet grinding until the powder particle size is 1.1μm to obtain a mixed slurry. After the mixed slurry is filtered, dry it at 102°C for 31min to obtain a mixture;

[0054] Compression molding: under the condition of a pressure of 32MPa, put the mixture into the saw blade base mold and the saw blade sawtooth mold respectively for press molding to obtain the saw blade base blank and the saw blade sawtooth blank;

[0055] Sintering: Quenching the saw blade base blank and saw blade sawtooth blank, the quenching temperature is 823°C, and the quenching time is 5.5 minutes; after quenching, sintering is carried out in vacuum, the sintering temperature is 1320°C, and 0.023 % grain growth i...

Embodiment 3

[0060] Mixing: take the cemented carbide material and add it to the ball mill according to the parts by weight described in Example 3 in Table 1, wherein the grain size of the tungsten carbide powder is 0.34 μm, and the cobalt binder contains 2.2% Cr and 0.26% Re, and add 220ml of D70 solvent oil for wet grinding until the powder particle size is 1.2μm to obtain a mixed slurry. After the mixed slurry is filtered, dry it at 104°C for 32min to obtain a mixture;

[0061] Compression molding: under the condition of a pressure of 34MPa, put the mixture into the saw blade base mold and the saw blade sawtooth mold respectively for press molding to obtain the saw blade base blank and the saw blade sawtooth blank;

[0062] Sintering: Quenching the saw blade substrate blank and the saw tooth blank, the quenching temperature is 826°C, and the quenching time is 6 minutes; after quenching, sintering is carried out in vacuum, the sintering temperature is 1340°C, and 0.026 % grain growth inh...

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Abstract

The invention relates to a saw web, in particular to a hard alloy saw web, and belongs to the field of hard alloy materials. The hard alloy saw web is made from a hard alloy material which comprises a hard alloy substrate and a coating arranged on the surface of the hard alloy substrate in a coated mode. The hard alloy substrate comprises the following components of, by weight, 80-85 parts of tungsten carbide powder, 5-10 parts of a cobalt binder, 0.5-1.0 part of Pr6O11, 0.2-0.3 part of nitrogen and 0.5-0.8 part of a hardening agent. The hard alloy with reasonable compatibility is adopted, the Pr6O11, the nitrogen and the hardening agent are added into the hard alloy material, meanwhile, the contents of the components in the hard alloy material are limited, and thus, through the synergistic effect, blending, pressing forming, sintering and coating of all elements and the methods such as hot isostatic pressure and physical vapor deposition, the prepared hard alloy saw web has the advantages of high rigidity, strength and hardness.

Description

technical field [0001] The invention relates to a saw blade, in particular to a cemented carbide saw blade, which belongs to the field of cemented carbide materials. technical background [0002] A saw blade is a general term for thin, circular knives used to cut solid materials. Saw blades can be divided into: diamond saw blades for stone cutting; high-speed steel saw blades for metal material cutting; saw blades for solid wood, furniture, wood-based panels, aluminum alloys, aluminum profiles, radiators, plastics, plastic steel, etc. Carbide saw blades. [0003] Tungsten carbide saw blades, as cemented carbide cutting tools, are specially made for cutting and grooving metal materials. They are the most commonly used cutting tools for wood product processing. The quality of cemented carbide saw blades is closely related to the quality of processed products. The cemented carbide saw blade includes many parameters such as the type of alloy cutter head, the material of the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D61/04B23D61/02B28D1/04
CPCB23D61/02B23D61/04B28D1/04
Inventor 王成国
Owner 宁波妙力斯五金工具有限公司
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