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Wear-resistant steel-bonded hard alloy composite hammer head and manufacturing method thereof

A technology of steel-bonded hard alloy and composite hammer head, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., and can solve the problems of low bonding strength, easy falling off of particles, poor wettability, etc.

Active Publication Date: 2020-08-04
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this invention is that it is difficult to completely melt the separator, which affects the metallurgical bonding of the interface between the hammer head and the hammer handle
The transition layer formed between the steel-bonded hard alloy-ZTA ceramic composite wear-resistant block and the substrate in the hammer head prepared by this method is thin, and the bonding strength between the two is not high. The steel-bonded hard alloy particles and ZTA particles in the wear-resistant block The wettability of the matrix material is poor, the particles are easy to fall off during use, and the preparation process is relatively complicated

Method used

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  • Wear-resistant steel-bonded hard alloy composite hammer head and manufacturing method thereof
  • Wear-resistant steel-bonded hard alloy composite hammer head and manufacturing method thereof
  • Wear-resistant steel-bonded hard alloy composite hammer head and manufacturing method thereof

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Effect test

Embodiment 1

[0102] The invention discloses a method for manufacturing a wear-resistant composite hammer head, which includes alloy powder mixing, alloy powder molding, molding casting and heat treatment, and the end of the wear-resistant steel-bonded hard alloy composite hammer head has TiC particles generated in situ and externally applied TiC, WC, Al 2 o 3 A steel-bonded cemented carbide hardened layer strengthened by equal hard particle dispersion, the method comprises the following steps:

[0103] (1) The alloy powder mixing ingredients: according to mass percentage (30-70): (10-40): (10-30): (10-30) respectively weigh metal titanium powder, graphite powder, hard ceramic particles Dosing with additives, put into V-shaped mixer and mix evenly.

[0104] (2) Forming of the alloy powder: add the above-mentioned uniformly mixed powder to an appropriate amount of water-based adhesive, the mass ratio of the water-based adhesive to the mixed powder is 1:2 to 1:100, and mix it evenly to prep...

Embodiment 2

[0126] A kind of manufacture method of wear-resisting compound hammerhead, and embodiment 1 is similar, and difference is, at first make hammer crusher hammerhead foam plastics white mold, and this hammerhead is the hammerhead of large and medium-sized crusher above 50Kg, according to hammerhead According to the actual use and wear of the head, a groove is made in the hammer surface foam plastic model, the volume of the groove is calculated, and the weight of the cemented carbide powder is obtained.

[0127] Weigh 1200g of metal titanium powder with a particle size of 23-45μm, 300g of graphite powder of 6.5-13μm, 100g of titanium carbide powder of 75μm, 150g of cast tungsten carbide powder of 150μm, 50g of alumina powder of 18μm, and high-carbon ferrochrome of 150μm Powder 100g, 80μm medium carbon ferromanganese powder 50g and rare earth ferrosilicon alloy powder 50g, mixed in V-type mixer machine for 6h, then added about 600g of 4% polyvinyl alcohol aqueous solution, stirred i...

Embodiment 3

[0132] A kind of manufacture method of wear-resisting composite hammer, and embodiment 1 is similar, and difference is, at first make fine crusher hammer foam plastics white mold, and this hammer is the hammer of small and medium-sized crusher of 50Kg, and feed granularity is less than 200mm According to the actual use and wear of the hammer head, a groove is made on the foam plastic model of the hammer surface, the volume of the groove is calculated, and the weight of the cemented carbide powder is obtained.

[0133] Weigh 500g of titanium metal powder with a particle size of 23-45μm, 150g of graphite powder of 6.5-13μm, 90g of titanium carbide powder of 75μm, 50g of tungsten carbide powder of 45μm, 60g of high-carbon ferrochromium powder of 75μm, and 60g of high-carbon ferrochrome powder of 80μm Mix 40g of ferromanganese powder and 10g of rare earth ferrosilicon alloy powder in a V-type mixer for 2 hours, then add about 400g of 2% sodium carboxymethylcellulose (CMC) aqueous s...

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Abstract

The invention provides a wear-resistant steel-bonded hard alloy composite hammer head and a manufacturing method thereof. The manufacturing method comprises the following steps of: step (1). blendingtitanium powder, graphite powder, additional hard particles and additives, adding a water-based binder, mixing uniformly, and making the mixture into alloy powder paste or stamping the mixture to forma preform; step (2). pasting the alloy powder paste or fixing the dried preform to the lost foam model of the hammer face of the hammer head, then coating anti-sticking sand fireproof paint, drying,burying in a box, and performing dry sand vibration modeling; and step (3). pouring high-toughness austenitic manganese steel or low-carbon alloy steel melt, using high-temperature molten steel to induce the combustion reaction between titanium and carbon in the alloy powder paste or preform, wherein TiC particles are generated in situ, and the high-temperature molten steel penetrates into an alloy particle layer, and interacts with additional TiC, WC, Al2O3 and other alloy powder particles; and performing cooling and cleaning, then performing heat treatment, and thus, the high-toughness and high-hardness wear-resistant steel-bonded hard alloy composite hammer head is manufactured.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant steel-based composite materials, and relates to a wear-resistant steel-bonded hard alloy composite hammer and a manufacturing method thereof. Background technique [0002] Hammer crusher is one of the main equipment for crushing materials in industries such as metallurgy, mining, building materials, cement, electric power and refractory materials, and the hammer head is its main vulnerable and wear-resistant part. The working principle of the hammer crusher is to use the kinetic energy of the high-speed rotating hammer to impact and crush the material entering the crusher from its cleavage surface. During the relative movement, the crushed material interacts with the surface of the hammer, resulting in high stress wear . The materials to be crushed are generally hard objects such as rocks and metal ores. When the hardness of the material exceeds the hardness of the hammer head material, th...

Claims

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Application Information

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IPC IPC(8): B22D27/18B02C13/28B22C9/04B22C9/22B22C3/00B22D23/04C21D9/00
CPCB22D27/18B22C9/04B22C9/22B22C3/00B22D23/04C21D9/0068B02C13/28
Inventor 程军杨吉春刘海华
Owner INNER MONGOLIA UNIV OF SCI & TECH
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