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Ultra-pressure sintered dense solid knife from polycrystalline integrated cubic boron nitride and production method thereof

A cubic boron nitride and ultra-high pressure technology, applied in the field of improved material cutting tools and their manufacturing, can solve problems such as shortened service life, damage to the coating film, peeling of the coating film, etc., to prevent cracks and overcome easy wear and tear. , good bonding performance

Inactive Publication Date: 2008-05-14
刘书锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, disclosed ZL01142529 and ZL01142530; However, this coating film is often peeled off, and the coating film is also often damaged, resulting in shortened service life during work

Method used

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  • Ultra-pressure sintered dense solid knife from polycrystalline integrated cubic boron nitride and production method thereof

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Experimental program
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Embodiment Construction

[0019] Material formula 1: 75% by weight of polycrystalline cubic boron nitride fine powder, 15% by weight of cobalt aluminum alloy fine powder, and 10% by weight of ceramic fine powder additive.

[0020] Material formula 2: 85% by weight of polycrystalline cubic boron nitride fine powder, 10% by weight of cobalt aluminum alloy fine powder, and 5% by weight of ceramic fine powder additive.

[0021] Material formula 3: 80% by weight of polycrystalline cubic boron nitride fine powder, 12% by weight of cobalt aluminum alloy fine powder, and 8% by weight of ceramic fine powder additive.

[0022] The above micropowder:

[0023] (1) In the cobalt-aluminum alloy micropowder, cobalt accounts for 2% by weight, and aluminum accounts for 98% by weight; TiC accounts for 3% by weight in the ceramic micropowder additive, Al O accounts for 10% by weight, TiN accounts for 30% by weight, and AlB accounts for 57% by weight.

[0024] (2) In the cobalt-aluminum alloy micropowder, cobalt accounts...

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Abstract

A ultrahigh sintered dense cutter with integrated polycrystalline cubic boron nitride and its production are disclosed. The material consists of polycrystalline cubic boron nitride 75-85wt%, IIIV and IIIA family metal alloy 10-15wt% and ceramic additive 5-10wt%. The process is carried out by placing the cutter raw materials into mould, placing the mould into super-high pressure synthetic colloid, forming into super-high pressure assemble block, pressurizing the cutter materials to 6-8.5Gpa, and heating to 1300-1800 DEG C for 60-90 seconds. It has high cutting parameter and excellent cutting effect.

Description

technical field [0001] The invention relates to a cutting tool of improved material and a manufacturing method thereof, which adopts a compact cutting tool which contains polycrystalline cubic boron nitride such as cubic boron nitride, metal alloy powder and ceramic additives as raw materials and is sintered under ultra-high pressure. Background technique [0002] Cubic boron nitride has a hardness and thermal conductivity close to that of diamond and has excellent performance with lower reaction ability with ferrous metals than diamond. Therefore, from the perspective of improving work efficiency and reducing installation costs, people process difficult-to-cut ferrous metal , It is hoped that the tool containing this kind of tool can be used instead of grinding tool or processing tool and cemented carbide or cermet tool. [0003] However, the disadvantages of cubic boron nitride particles are cracking and short service life. [0004] In order to improve the wear resistance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/5831C04B35/645
Inventor 刘书锋
Owner 刘书锋
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