Bucket tooth made of wear-resistant composite material, and preparation method thereof

A composite material and tooth head technology, which is applied in the field of wear-resistant composite material bucket teeth and its preparation, can solve the problems of poor wear resistance, high working stress, and short service life, so as to improve wear resistance, increase service life, prevent Fracture effect

Inactive Publication Date: 2019-07-05
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor wear resistance, high working stress and short service life of traditional excavator bucket teeth, and provides a wear-resistant composite material bucket tooth, which includes composite material tooth head 1, metal matrix tooth tail 2, rubber Ring 3, the composite tooth head 1 is connected with the metal matrix tooth tail 2, the metal matrix tooth tail 2 has a pin hole 4, and the rubber ring 3 is sleeved in the hole

Method used

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  • Bucket tooth made of wear-resistant composite material, and preparation method thereof
  • Bucket tooth made of wear-resistant composite material, and preparation method thereof
  • Bucket tooth made of wear-resistant composite material, and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] A wear-resistant composite bucket tooth, such as figure 1 , 2 As shown, it includes a composite tooth head 1, a metal matrix tooth tail 2, and a rubber ring 3. The composite material tooth head 1 is connected to the metal matrix tooth tail 2. There is a pin hole 4 on the metal matrix tooth tail 2, and the hole is covered with Rubber ring 3.

[0027] The specific steps of the preparation method of the wear-resistant composite material bucket tooth in this embodiment are as follows: uniformly mix 100-mesh iron powder and 80-mesh alumina ceramic particles, the mass percentage of reduced iron powder in the iron powder is ≥99%, and then add Anhydrous ethanol with 10% of the mass of ceramic particles was ball milled for 2 hours to obtain a mixed powder, and then a binder water glass with a mass of 6% of the mass of ceramic particles was added. After stirring evenly, it was filled into a tooth head mold. It is a 2450MHz microwave oven, and after being calcined for 2 hours, i...

Embodiment 2

[0030] A wear-resistant composite material bucket tooth, comprising a composite tooth head 1, a metal matrix tooth tail 2, and a rubber ring 3, the composite material tooth head 1 is connected to the metal matrix tooth tail 2, and the metal matrix tooth tail 2 is provided with a pin hole 4. A rubber ring 3 is sleeved in the hole.

[0031] The specific steps of the preparation method of the wear-resistant composite material bucket tooth in this embodiment are as follows: uniformly mix 200-mesh iron powder with 120-mesh zirconium corundum ceramic particles, the mass percentage of reduced iron powder in the iron powder is ≥99%, and then add ceramic particles 18% absolute ethanol by mass, ball milled for 4 hours to obtain a mixed powder, the mass percentage of iron powder in the mixed powder is 30%, then add a binder silica sol with a mass of 8% ceramic particles, stir evenly, and fill it into the tooth head type In the mould, a microwave oven with a microwave power of 1600W and a...

Embodiment 3

[0034] A wear-resistant composite material bucket tooth, comprising a composite tooth head 1, a metal matrix tooth tail 2, and a rubber ring 3, the composite material tooth head 1 is connected to the metal matrix tooth tail 2, and the metal matrix tooth tail 2 is provided with a pin hole 4. A rubber ring 3 is sleeved in the hole.

[0035] The specific steps of the preparation method of the wear-resistant composite material bucket tooth in this embodiment are as follows: uniformly mix 150-mesh iron powder and 100-mesh silicon carbide ceramic particles, the mass percentage of reduced iron powder in the iron powder is ≥99%, and then add ceramic particles 14% by mass of absolute ethanol, ball milled for 3 hours to obtain a mixed powder, the mass percentage of iron powder in the mixed powder is 60%, and then add the binder polyvinyl alcohol of 7% by mass of ceramic particles, stir evenly, and fill it into the tooth head In the mold, a microwave oven with a microwave power of 2400W ...

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Abstract

The invention discloses a bucket tooth made of a wear-resistant composite material, and a preparation method thereof. The bucket tooth made of the wear-resistant composite material comprises a tooth head made of a composite material, a metal-matrix tooth tail and a rubber ring, wherein the tooth head made of the composite material is connected with the metal-matrix tooth tail; a pin shaft hole isformed in the metal-matrix tooth tail; and the rubber ring is sleeved in the hole. The preparation method comprises the steps of mixing iron powder and ceramic particles, then adding absolute ethyl alcohol, ball-milling mixing, adding a binding agent, uniformly stirring, filling into a die, carrying out microwave calcining to obtain a tooth head precast made of a composite material, fixing the tooth head precast made of the composite material onto a working surface of a female die, casting molten metal, ejecting a male die, cooling for demoulding, machining to obtain the pin shaft hole, carrying out heat treatment, and placing in the rubber ring so as to obtain the bucket tooth made of the composite material; and compounding the ceramic particles on the tooth head, so that a wear-resistingproperty is improved, the bucket tooth not only has favorable plasticity of metal but also has high hardiness and high wear resistance of the ceramic particles, the favorable working efficiency of the equipment is ensured, the impact stress is reduced due to the rubber ring, and the service life is remarkably prolonged.

Description

technical field [0001] The invention relates to a wear-resistant composite material bucket tooth and a preparation method thereof, belonging to the field of excavator component manufacturing. Background technique [0002] Loaders, excavators, electric shovels and other shoveling equipment are widely used in metallurgy, mining, and national defense projects. Bucket teeth, as their main wearing parts, are directly in contact with materials (rocks, coal, sand, etc.) during operation. Strong friction and impact will cause severe wear to the bucket teeth, eventually leading to failure. With the improvement of performance requirements for excavator bucket teeth, the existing excavator bucket teeth are often difficult to meet the market demand. Therefore, it is of great significance to improve the service life of bucket teeth. [0003] Patent CN108160923A discloses a preparation method of particle-reinforced iron-based super-wear-resistant bucket teeth, in which TiC+VC dual-phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02B22D23/04C21D1/18C21D9/00E02F9/28
CPCB22D23/04C21D1/18C21D9/0068C22C38/002C22C38/02C22C38/04E02F9/285E02F9/2858
Inventor 蒋业华薛达韦鸿铭周谟金向晓龙刘志鹏
Owner KUNMING UNIV OF SCI & TECH
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