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A self-diffusion gradient functional composite tool material and its preparation method

A gradient function and compound cutting tool technology, which is applied in the direction of chemical instruments and methods, metal layered products, layered products, etc., can solve the problem that interlayer damage is not easy to control, and achieve low cost, strong resistance to crack growth, and easy The effect of industrialization

Active Publication Date: 2016-06-08
上海艾梯夫机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The interlayer structure used in this patent is formed by physical superposition, and interlayer damage is not easy to control

Method used

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  • A self-diffusion gradient functional composite tool material and its preparation method
  • A self-diffusion gradient functional composite tool material and its preparation method
  • A self-diffusion gradient functional composite tool material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of self-diffusion gradient functional composite tool material:

[0027] (1) the nano-Ni powder of 9wt%, the nano-Mo powder of 3wt%, the WC superfine powder of 15wt% and the superfine Ti of 73wt% (C 5 N 5 ) powder is put into a ball mill barrel filled with cemented carbide balls, placed on a ball mill for 48 hours and then dried and sieved with a 200 mesh sieve to obtain a surface layer composite powder for subsequent use;

[0028] (2) the nano-Ni powder of 6.5wt%, 18.0wt% Al 2 o 3 powder, 1.6wt% superfine VC powder, 73.9wt% TiB 2 - TiC eutectic powder is distributed into a ball mill bucket filled with alumina balls, placed on a ball mill for 48 hours, dried and sieved with a 200-mesh sieve to obtain a matrix composite powder for future use;

[0029] (3) First use an electronic balance to weigh a little surface composite powder and place it in a graphite mold for compaction, then weigh the matrix composite powder and place it on the compacted surfa...

Embodiment 2

[0033] The tool material composition and sintering atmosphere are shown in Table 1, the mechanical properties are shown in Table 2, and other process conditions are the same as in Example 1.

Embodiment 3

[0035] The tool material composition and sintering atmosphere are shown in Table 1, the mechanical properties are shown in Table 2, and other process conditions are the same as in Example 1.

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Abstract

The invention relates to a self-diffusion gradient functional compound cutting tool material and a preparation method thereof. The preparation method comprises the following steps: grinding ultrafine Ti(C5N5) powder, ultrafine WC powder, nanometer Ni powder and nanometer Mo powder into matrix compound powder; grinding TiB2-TiC eutectic powder, Al2O3 powder, ultrafine VC powder and nanometer Ni powder into surface compound powder; weighting little surface compound powder, pouring into a graphite jig and compacting; weighting the matrix compound powder, putting onto the compacted surface compound powder, and then compacting; weighting a little surface compound powder, putting onto the compacted matrix compound powder, and then compacting; putting into a vacuum high-temperature sintering furnace, directly heating and slowly pressurizing and sintering. According to the invention, the self-diffusion gradient functional compound cutting tool material with excellent compatibility and interface bonding of interlayer components is prepared through diffusion and sintering. The self-diffusion gradient functional compound cutting tool material has the characteristics of hard and wear-resisting surface, tough subsurface stratum, surface layer peeling prevention, strong whole body and breaking resistance.

Description

technical field [0001] The invention relates to a self-diffusion gradient functional composite tool material and its preparation, in particular to the preparation of a composite tool material with gradient mechanical properties, hard surface, subsurface toughness and strong overall strength and no cracks in the interface between layers, belonging to the technical field of new materials. Background technique [0002] High-speed cutting technology is an advanced modern manufacturing technology, which has been widely used in aviation, aerospace, automobile and weapon manufacturing fields. Tool technology is the key technology in high-speed cutting technology. The cemented carbide coated tool material prepared by the gradient design method has become one of the most widely used tool types, which improves the cutting performance of the tool by coating or depositing one or more layers of wear-resistant materials on the cemented carbide ; However, the large phase transition between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/02B22F3/16B32B15/04B32B9/04
Inventor 邹斌黄传真王军季文彬刘含莲姚鹏朱洪涛徐开涛
Owner 上海艾梯夫机械科技有限公司
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