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Hard alloy, hard alloy cutter bar and manufacturing method thereof

A technology of cemented carbide and its manufacturing method, which is applied in the field of alloys, can solve problems such as excessive oxygen content in powder materials and affect product quality, and achieve the effects of improving red hardness, inhibiting grain growth, and increasing strength

Inactive Publication Date: 2013-09-18
CHANGSHA KENBEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problem that the oxygen content of the powder material exceeds the standard during the wet grinding and drying process in the production process of cemented carbide, which affects the product quality, tungsten carbide, cobalt, tantalum carbide, chromium carbide and vanadium carbide are also added in the mixed grinding process Oleic acid or polyethylene glycol 4000 with a total mass of 0.015wt% to 0.025wt%

Method used

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  • Hard alloy, hard alloy cutter bar and manufacturing method thereof

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Embodiment 1

[0029] Embodiment 1: The cemented carbide of this embodiment contains at least 80 parts by mass of tungsten carbide, 20 parts by mass of cobalt, 0.15 parts by mass of tantalum carbide, 0.4 parts by mass of chromium carbide, and 0.1 part by mass of vanadium carbide. The tungsten carbide is a tungsten carbide powder with a particle size of 1.0-1.2 μm, a total carbon content of 6.0%, and an oxygen content of 0.15%. The cemented carbide manufacturing method of the present embodiment comprises the following steps: putting 80 parts by mass of tungsten carbide, 20 parts by mass of cobalt, 0.15 parts by mass of tantalum carbide, 0.4 parts by mass of chromium carbide, and 0.1 part by mass of vanadium carbide into a ball mill, adding tungsten carbide , cobalt, tantalum carbide, chromium carbide and vanadium carbide total mass of 0.25 parts by mass of alcohol and 0.015wt% oleic acid were mixed and milled for 24 hours, unloaded, dried, and sieved; The forming agent is composed of 2.5 part...

Embodiment 2

[0030]Embodiment 2: The cemented carbide of this embodiment contains at least 90 parts by mass of tungsten carbide, 10 parts by mass of cobalt, 0.5 parts by mass of tantalum carbide, 0.2 parts by mass of chromium carbide, and 0.3 parts by mass of vanadium carbide. The tungsten carbide is a tungsten carbide powder with a particle size of 1.0-1.2 μm, a total carbon content of 6.3%, and an oxygen content of 0.2%. The cemented carbide manufacturing method of the present embodiment comprises the following steps: putting 90 parts by mass of tungsten carbide, 10 parts by mass of cobalt, 0.5 parts by mass of tantalum carbide, 0.2 parts by mass of chromium carbide, and 0.3 parts by mass of vanadium carbide into a ball mill, adding tungsten carbide , cobalt, tantalum carbide, chromium carbide and vanadium carbide total mass of 0.3 parts by mass of alcohol and 0.025wt% oleic acid mixed for 72 hours, unloading, drying, sieving; The forming agent is composed of 2.5 parts by mass of oleic a...

Embodiment 3

[0031] Embodiment 3: The cemented carbide of this embodiment contains at least 85 parts by mass of tungsten carbide, 15 parts by mass of cobalt, 0.3 parts by mass of tantalum carbide, 0.3 parts by mass of chromium carbide, and 0.2 parts by mass of vanadium carbide. The tungsten carbide is a tungsten carbide powder with a particle size of 1.0-1.2 μm, a total carbon content of 6.15%, and an oxygen content of 0.18%. The cemented carbide manufacturing method of the present embodiment comprises the following steps: putting 85 parts by mass of tungsten carbide, 15 parts by mass of cobalt, 0.3 parts by mass of tantalum carbide, 0.3 parts by mass of chromium carbide, and 0.2 parts by mass of vanadium carbide into a ball mill, adding tungsten carbide , cobalt, tantalum carbide, chromium carbide and vanadium carbide total mass of 0.28 parts by mass of alcohol and 0.02wt% polyethylene glycol 4000 mixed for 48 hours, unloading, drying, sieving; SBS forming agent, the powder added with for...

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Abstract

The invention discloses a hard alloy, a hard alloy cutter bar and a manufacturing method thereof. The hard alloy comprises 80-90 parts by mass of tungsten carbide, 10-20 parts by mass of cobalt, 0.15-0.5 part by mass of tantalum carbide, 0.2-0.4 part by mass of chromium carbide and 0.1-0.3 part by mass of vanadium carbide. A cutter bar body (2) of a cutter bar made by the hard alloy is provided with a threaded hole (3) used for mounting a cutting tool (4). The manufacturing method of the cutter bar comprises the following steps of: adding the tungsten carbide, cobalt, chromium carbide, tantalum carbide and vanadium carbide into a ball mill according to the proportions of the ingredients, adding alcohol, mixing and grinding the ingredients, discharging, drying and sieving; adding a forming agent; pressing the ingredients to a blank; sintering the blank at a temperature of 1360-1450 DEG C to form the hard alloy cutter bar; conventionally polishing the surface of the hard alloy cutter bar; and electrosparking the tool bar and burning out the threaded hole.

Description

technical field [0001] The invention relates to an alloy, in particular to a cemented carbide; the invention also relates to a cemented carbide tool holder for mounting a cutting tool, and a method for manufacturing the cemented carbide tool holder for mounting a cutting tool. Background technique [0002] Traditional cemented carbides, such as YG6, YG8, YT and other grades, are mainly composed of tungsten carbide and cobalt. When this type of cemented carbide is used to make knives, it generally has poor red hardness, wear resistance, rigidity and Insufficient strength and other problems, although its application range is wide, it is mainly suitable for the processing of short-cutting materials such as non-ferrous metals and low-plasticity cast iron. It is not suitable for making slender milling cutters, bore cutters and turning cutters for processing hard metal materials. [0003] With the development of technology, machining technology is widely used in various fields, a...

Claims

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Application Information

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IPC IPC(8): C22C29/08B23P15/28
Inventor 陶钢彭双其
Owner CHANGSHA KENBEI TECH
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