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Ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and preparation method thereof

A technology of metal-based composite and ceramic particles, which is applied in the field of parts preparation, can solve the problems of limited service life, inability to fully use most of the structure of the tooth head, and limited thickness of the composite wear-resistant layer on the surface of the tooth head, so as to avoid brittleness, The effect of promoting the composite process of insert casting metallurgy and omitting the assembly process

Active Publication Date: 2020-03-17
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 matrix composite wear-resistant rake tooth head and preparation method thereof
  • Ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and preparation method thereof
  • Ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and preparation method thereof

Examples

Experimental program
Comparison scheme
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-based composite wear-resistant rake tooth head and a preparation method thereof, belonging to the field of parts preparation. The invention prepares rod-shaped composite materials by pressing and sintering ceramic particles and alloy powders, and inlays multiple rod-shaped composite materials in a metal matrix in combination with an inlay casting process, so as to realize wrapping of evenly distributed multiple rod-shaped composite materials by the metal matrix. The rake tooth head of the present invention avoids the problems of common rake teeth being easy to wear, homogeneous composite wear-resistant parts having poor toughness, brittleness and impact resistance, and adopting the combination process of powder metallurgy and inlay casting, compared with the overall metallurgical sintering, the parts are guaranteed Precise size, meeting the performance requirements of specific components, omitting the assembly process, simplifying the manufacturing process to a certain extent, greatly reducing the cost of parts preparation compared with the overall metallurgical sintering, dense structure and good metallurgical bonding, can be applied to cleaning vehicles and railway maintenance vehicles Rake bucket rock loading machine rake tooth parts, etc.

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 Patents(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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