A kind of carbide-containing austempering ductile iron hammer head and its preparation method and application

A technology of austempering and ductile iron, applied in grain processing and other directions, can solve the problems of high price and unsuitable cost performance.

Active Publication Date: 2018-01-12
NINGGUO HUAFENG WEAR RESISTANT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bimetallic casting hammer has a good effect, but the price is too high, and the cost performance is not suitable

Method used

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  • A kind of carbide-containing austempering ductile iron hammer head and its preparation method and application
  • A kind of carbide-containing austempering ductile iron hammer head and its preparation method and application

Examples

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Effect test

Embodiment 1

[0030] A carbide-containing austempering ductile iron hammer head proposed by the present invention, its components include: carbon: 3.4%, silicon: 3.0%, manganese: 0.2%, chromium: 0.6%, molybdenum: 0.2%, copper : 0.6%, nickel: 0.3%, phosphorus: ≤0.05%, sulfur: ≤0.03%, and the rest is iron.

Embodiment 2

[0032] A carbide-containing austempering ductile iron hammer head proposed by the present invention, its components include by weight percentage: carbon: 3.8%, silicon: 2.2%, manganese: 0.5%, chromium: 0.4%, molybdenum: 0.3%, copper : 0.4%, nickel: 0.4%, phosphorus: ≤0.05%, sulfur: ≤0.03%, and the rest is iron.

Embodiment 3

[0034] A carbide-containing austempering ductile iron hammer head proposed by the present invention, its components include by weight percentage: carbon: 3.6%, silicon: 2.5%, manganese: 0.45%, chromium: 0.5%, molybdenum: 0.23%, copper : 0.44%, nickel: 0.32%, phosphorus: ≤0.05%, sulfur: ≤0.03%, and the rest is iron.

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Abstract

The invention discloses an isothermal-quenching nodular-cast-iron hammerhead containing carbide. The isothermal-quenching nodular-cast-iron hammerhead is prepared from, by weight, 3.4%-3.8% of carbon, 2.2%-3.0% of silicon, 0.2%-0.5% of manganese, 0.4%-0.6% of chromium, 0.2%-0.3% of molybdenum, 0.4%-0.6% of copper, 0.3%-0.4% of nickel, smaller than or equal to 0.05% of phosphorus, smaller than or equal to 0.03% of sulfur and the balance iron. The invention further discloses a preparing method of the isothermal-quenching nodular-cast-iron hammerhead containing carbide. The preparing method includes the steps of smelting; pouring; and heat treating, wherein a hammerhead blank body is heated and austenitized, then heat preservation is carried out, and the isothermal-quenching nodular-cast-iron hammerhead containing carbide is obtained in an isothermal quenching manner, wherein the isothermal quenching temperature ranges from 240 DEG C to 280 DEG C, and the isothermal quenching time ranges from 3.5 h to 4.5 h. The invention further discloses an application of the isothermal-quenching nodular-cast-iron hammerhead containing carbide.

Description

technical field [0001] The invention relates to the technical field of hammer crushers, in particular to a carbide-containing austempering ductile iron hammer head and a preparation method and application thereof. Background technique [0002] Hammer crushers are widely used in brick factories and coal gangue processing plants. The hammer head is the main wear part to withstand the impact and wear of materials during high-speed rotation. The hammer heads commonly used in brick factories now include high manganese steel hammer heads, high chromium cast iron hammer heads and bimetal composite hammer heads. However, hammers made of various materials have certain limitations, specifically: high manganese steel hammers are not wear-resistant, high chromium cast iron hammers are fragile, and bimetallic hammers are expensive and cost-effective. [0003] The structure of high manganese steel after water toughening treatment is single-phase austenite, which has the characteristics o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08C21D1/20C21D5/00B02C13/26
CPCB02C13/26C21D1/20C21D5/00C22C33/08C22C37/10
Inventor 陈全心
Owner NINGGUO HUAFENG WEAR RESISTANT MATERIAL
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