Ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and manufacturing method thereof

A metal matrix composite, ceramic particle technology, applied in metal processing equipment, rails, ballast layers, etc., can solve the problem that most of the tooth head structure cannot be fully applied, the thickness of the composite wear-resistant layer on the tooth head surface is limited, and the service life is limited, etc. problems, to achieve the effect of promoting the metallurgical composite process of inlaid casting, omitting the assembly process, and avoiding brittleness

Active Publication Date: 2018-08-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear resistance, hardness, and impact resistance of the rake teeth of this invention are significantly improved, but the thickness of the composite wear-resistant layer on the surface of the tooth head is limited, and most of them are ordinary alloys, which cannot fully utilize most of the structure of the tooth head, which restricts the extension of service life.

Method used

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  • Ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and manufacturing method thereof
  • Ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and manufacturing method thereof
  • Ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0050] This example provides Al 2 o 3 - High-manganese steel ceramic particles multi-scale reinforced metal-based composite wear-resistant rake tooth head, the ceramic particle multi-scale reinforced metal-based composite wear-resistant rake tooth head is composed of figure 1 , 2 The metal matrix 1 is composed of a rod-shaped composite material 2, and a plurality of evenly distributed rod-shaped composite materials are wrapped in the metal matrix. The diameter of the rod-shaped composite material is 5mm, and the lengths of the three layers of rod-shaped composite materials from outside to inside are 15mm, 30mm, and 45mm, respectively. The tooth head of the rake tooth is conical.

[0051] The material of the metal matrix is ​​high manganese steel.

[0052] Al described in this example 2 o 3 -The preparation method of high manganese steel ceramic particles multi-scale reinforced metal matrix composite wear-resistant rake tooth head is as follows:

[0053]In step (1), 40-6...

Embodiment 2

[0067] The ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head provided in this embodiment is composed of figure 1 , 2 The metal matrix 1 is composed of a rod-shaped composite material 2, and a plurality of evenly distributed rod-shaped composite materials are wrapped in the metal matrix. The diameter of the rod-shaped composite material is 2 mm, and the lengths of the three layers of rod-shaped composite materials from outside to inside are 12 mm, 24 mm, and 36 mm, respectively. The tooth head of the rake tooth is conical.

[0068] The material of the metal substrate is high chromium cast iron.

[0069] The preparation method of the ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head described in this embodiment is as follows:

[0070] In step (1), 80-120 mesh ceramic particles, alloy powder and plasticizer are mixed evenly and then filled into a hollow cylindrical mold, and pressed for 15 ...

Embodiment 3

[0084] This embodiment provides TiC-high manganese steel ceramic particle multi-scale reinforced metal-based composite wear-resistant rake tooth head, the ceramic particle multi-scale reinforced metal-based composite wear-resistant rake tooth head is composed of figure 1 , 2 The metal matrix 1 is composed of a rod-shaped composite material 2, and a plurality of evenly distributed rod-shaped composite materials are wrapped in the metal matrix. The diameter of the rod-shaped composite material is 5mm, and the lengths of the three layers of rod-shaped composite materials from outside to inside are 15mm, 30mm, and 45mm, respectively. The tooth head of the rake tooth is conical.

[0085] The material of the metal matrix is ​​high manganese steel.

[0086] The preparation method of the TiC-high manganese steel ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head described in this example is as follows:

[0087] In step (1), 40-60 mesh cera...

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Abstract

The invention discloses a ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and a manufacturing method of the ceramic particle multi-scale reinforced metalbase composite wear-resistant raking tooth head, and belongs to the field of part manufacturing. According to the manufacturing method, ceramic particles and alloy powder are compacted and sintered tomanufacture rod-shaped composite materials, the rod-shaped composite materials are embedded into a metal base through the combination of the powder metallurgy technology and the embedment casting technology, and the purpose that the metal base covers the uniformly-distributed rod-shaped composite materials is achieved. The ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head solves the problems that an ordinary raking tooth is prone to being worn, and a homogeneous composite wear-resistant part is poor in toughness, brittle and low in impact resistance. Compared with overall metallurgical sintering, the manufacturing method has the advantages that by means of the technology of combination of powder metallurgy and embedment casting, the dimensionalaccuracy of parts is guaranteed, the requirements of specific parts for using performance are met, the assembling working procedure is omitted, the manufacturing technology is simplified to a certainextent, the part manufacturing cost is greatly reduced, the organization is compact, the metallurgical bonding is good, and the ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head can be applied to cleaning and screening vehicles for railway maintenance and parts of raking teeth of scraper loaders.

Description

technical field [0001] The invention belongs to the technical field of parts preparation, and in particular relates to a ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and a preparation method thereof. Background technique [0002] The cleaning truck for railway maintenance is mainly used for backfilling after loosening the rock slag on the railway bed. The rake bucket rock loader is an important mining equipment used for excavation and tunneling. The rake tooth is an important part of the two equipments. One of them is also an important part of some mining machinery and road maintenance machinery. The quality of the rake tooth head determines the speed of the work efficiency of this type of equipment. Rake tooth heads are subjected to different degrees of wear and impact under different working conditions, resulting in different degrees and different forms of failure, while ceramic particle reinforced metal matrix composites ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/02B22F5/00B22F3/02B22F3/10E01B27/06
CPCE01B27/06B22D19/02B22F3/02B22F3/1017B22F5/00B22F2998/10B22F1/10
Inventor 卢德宏王立坤
Owner KUNMING UNIV OF SCI & TECH
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