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Composite material of metal / ceramic metal, manufacturing method and application

A cermet and composite material technology, applied in the field of cermet materials and wear-resistant cermet materials, can solve the problems of low bonding strength, pollution, weakening bonding strength, etc., and achieve low raw material cost, high bonding strength and low manufacturing cost. Effect

Active Publication Date: 2007-07-25
NINGBO HOPESUN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wettability between the hard particles and the substrate is poor, and the thickness of the wear-resistant coating is very limited. Generally, it can only be composited below 3mm, and there is inevitable pollution on the interface, and the bonding strength is low.
The binder in the prefabricated block is gassed at high temperature and cannot be effectively discharged, and pores are generated in the prefabricated block and on the interface between the prefabricated block and the casting substrate, further weakening the bonding strength
Therefore, it cannot bear the wear even under the condition of small energy impact, and it is difficult to popularize and apply

Method used

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  • Composite material of metal / ceramic metal, manufacturing method and application
  • Composite material of metal / ceramic metal, manufacturing method and application
  • Composite material of metal / ceramic metal, manufacturing method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0045] This embodiment is a shovel tooth of an excavator, and the selected self-propagating high-temperature synthesis reaction system consists of:

[0046] Nickel Ni 42%

[0047] Titanium Ti 46%

[0048] Graphite C 12%.

[0049] The auxiliary component molybdenum Mo is added in the form of 55MoFe, and the added amount is 7.5% of the total weight of Ni, Ti and C.

[0050] See Figure 1 and Figure 2, the specific manufacturing process is:

[0051] a. Prepare the raw materials according to the composition of the above-mentioned self-propagating high-temperature synthesis reaction system, and all raw materials are selected from powders below -100 mesh;

[0052] b. Preparation of prefabricated blocks. After the above-mentioned raw material powders are dry-mixed evenly, add 0.5-1.0% of the total powder weight of soybean oil as a binder, continue to mix evenly, take the specified weight and add it into the metal mold, and the metal mold is made in advance according to the shape a...

Embodiment 2

[0063] This embodiment is a shovel tooth of an excavator. The selected self-propagating high-temperature synthesis reaction system contains nickel Ni, titanium Ti, carbon C as the main components, and molybdenum Mo as the auxiliary component.

[0064] The main component is composed of:

[0065] Nickel Ni 35%

[0066] Titanium Ti 52%

[0067] Graphite C 13%.

[0068] The auxiliary component molybdenum Mo is added in the form of 55MoFe, and the added amount is 5% of the total weight of Ni, Ti and C.

[0069] The specific manufacturing process is:

[0070] a. Prepare the raw materials according to the composition of the above-mentioned self-propagating high-temperature synthesis reaction system, and all raw materials are selected from powders below -100 mesh;

[0071] b. Preparation of prefabricated blocks. After the above-mentioned raw material powders are dry-mixed evenly, add 0.5-1.0% of the total powder weight of soybean oil as a binder, continue to mix evenly, take the ...

Embodiment 3

[0076] This embodiment is a shovel tooth of an excavator. The selected self-propagating high-temperature synthesis reaction system contains nickel Ni, titanium Ti, carbon C as main components, and molybdenum Mo, RE, and Cu as auxiliary components.

[0077] The main component is composed of:

[0078] Nickel Ni 45%

[0079] Titanium Ti 44%

[0080] Graphite C 11%.

[0081] The auxiliary component molybdenum Mo is added in the form of 55MoFe, and the added amount is 7.5% of the total weight of Ni, Ti and C.

[0082] The auxiliary component RE is added in the form of 30RESiFe, and the added amount is 2% of the total weight of Ni, Ti, and C.

[0083] The auxiliary component Cu is added in the form of copper powder, and the added amount is 1% of the total weight of Ni, Ti and C.

[0084] The specific manufacturing process is:

[0085] a. Prepare the raw materials according to the composition of the above-mentioned self-propagating high-temperature synthesis reaction system, and...

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Abstract

This invention discloses a method for producing metal / metal ceramic composite, and its application. The composite is produced by compositing metal ceramic onto low alloy steel matrix. The metal ceramic is metal-matrix TiC, which comprises binding phase metal and hard granular TiC dispersed in binding phase metal. The low alloy steel matrix and the metal ceramic are metallurgically composited, and a diffusion / dissolution zone exists at the interface of the binding phase metal and the low alloy steel. A gradient transition layer of hard granular phase exists in the diffusion / dissolution zone. The binding phase metal is selected from Fe, Co and Ni. The TiC is prepared by self-propagating high temperature synthesis of Ti and C during casting of the low alloy steel. The self-propagating high temperature synthesis system comprises: binding phase metal 35-45 wt. %, Ti 44-52 wt. %, and C 11-13 wt. %. The metallurgical composition of the metal ceramic and the matrix has high strength. Therefore, the composite has good wear resistance and good impact resistance, thus is suitable for producing relieving of excavator.

Description

technical field [0001] The invention relates to the field of metal-ceramic materials, in particular to the field of wear-resistant metal-ceramic materials, specifically a metal / metal-ceramic composite material and its manufacturing method and application. Background technique [0002] Cermet materials are multiphase composite materials composed of one or more ceramic phases and metals or alloys. According to performance and use, it can be divided into heat-resistant type, wear-resistant type and corrosion-resistant type. As a typical application of heat-resistant and wear-resistant type, it is cemented carbide with WC (tungsten carbide) and TiC (titanium carbide) as the reinforcing phase. The cutting tools made of this material have excellent red hardness and wear resistance, and the production efficiency is far away. It exceeds the best alloy tool steel, and the wear-resistant parts made of this material have extremely high wear resistance, which greatly exceeds high manga...

Claims

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Application Information

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IPC IPC(8): C23C30/00C22C14/00C22C30/00C22C1/00C22F1/18
Inventor 胡开华
Owner NINGBO HOPESUN NEW MATERIAL
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