Anti-corrosion crusher hammerhead and preparation method thereof

A crusher and anti-corrosion technology, applied in manufacturing tools, heat treatment equipment, furnace types, etc., can solve problems such as low service life, and achieve the effects of improved yield strength, high hardness, and improved tensile properties

Inactive Publication Date: 2019-09-20
NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If carbon steel is used to protect the toughness of parts, its service life is very short due to its low strength and hardness, but its toughness is particularly good, so it is completely suitable as a hammer handle material

Method used

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  • Anti-corrosion crusher hammerhead and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A corrosion-resistant crusher hammer head, comprising the following components in terms of mass percentage: Cr 20.68%, Ni8.64%, Nb 4.19%, Mo 1.58%, Mn 1.25%, C 2.04%, Si 0.10%, W 0.22%, V 0.12%, S0.01%, P 0.005%, and the rest are Fe and unavoidable impurities.

[0026] The preparation method of the corrosion-resistant crusher hammer specifically comprises the following steps:

[0027] S1. Smelting: Put scrap steel and pig iron into the medium frequency induction furnace for smelting, melt the molten steel, add ferrochrome, ferronickel, ferro-niobium, ferro-molybdenum, ferro-vanadium, ferro-tungsten, ferro-manganese and ferrosilicon, heat up and keep warm until completely melted , the smelting temperature is 1550°C, cover the slagging material, calm down, remove the slag, add aluminum accounting for 0.03% of the mass of all raw materials for deoxidation, and finally add rare earth for compound modification treatment to obtain molten steel;

[0028] S2, casting: when the...

Embodiment 2

[0032] A corrosion-resistant crusher hammer head, comprising the following components in terms of mass percentage: Cr 21.8%, Ni9.47%, Nb 5.62%, Mo 1.67%, Mn 1.38%, C 2.36%, Si 0.35%, W 0.29%, V 0.17%, S0.01%, P 0.005%, and the rest are Fe and unavoidable impurities.

[0033] The preparation method of the corrosion-resistant crusher hammer specifically comprises the following steps:

[0034] S1. Smelting: Put scrap steel and pig iron into the medium frequency induction furnace for smelting, melt the molten steel, add ferrochrome, ferronickel, ferro-niobium, ferro-molybdenum, ferro-vanadium, ferro-tungsten, ferro-manganese and ferrosilicon, heat up and keep warm until completely melted , the smelting temperature is 1610°C, cover the slagging material, calm down, remove the slag, add aluminum accounting for 0.03% of the mass of all raw materials for deoxidation, and finally add rare earth for compound modification treatment to obtain molten steel;

[0035] S2, casting: when the ...

Embodiment 3

[0039]A corrosion-resistant crusher hammer head, comprising the following components in terms of mass percentage: Cr 23.20%, Ni 10.32%, Nb 6.08%, Mo 1.84%, Mn 1.57%, C 2.65%, Si 0.43%, W 0.37%, V 0.23%, S0.01%, P 0.005%, and the rest are Fe and unavoidable impurities.

[0040] The preparation method of the corrosion-resistant crusher hammer specifically comprises the following steps:

[0041] S1. Smelting: Put scrap steel and pig iron into the medium frequency induction furnace for smelting, melt the molten steel, add ferrochrome, ferronickel, ferro-niobium, ferro-molybdenum, ferro-vanadium, ferro-tungsten, ferro-manganese and ferrosilicon, heat up and keep warm until completely melted , the smelting temperature is 1680°C, cover the slagging material, calm down, remove the slag, add aluminum accounting for 0.03% of the mass of all raw materials for deoxidation, and finally add rare earth for compound modification treatment to obtain molten steel;

[0042] S2, casting: when th...

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Abstract

The invention provides an anti-corrosion crusher hammerhead and a preparation method thereof. The crusher hammerhead is prepared from the following components in percentage by mass: 20.68 to 23.20 percent of Cr, 8.64 to 10.32 percent of Ni, 4.19 to 6.08 percent of Nb, 1.58 to 1.84 percent of Mo, 1.25 to 1.57 percent of Mn, 2.04 to 2.65 percent of C, 0.10 to 0.43 percent of Si, 0.22 to 0.37 percent of W, 0.12 to 0.23 percent of V, less than or equal to 0.05 percent of S, less than or equal to 0.008 percent of P, and the balance Fe and inevitable impurities. The preparation method comprises the steps of smelting, casting, austenitizing and isothermally quenching. According to the anti-corrosion crusher hammerhead and the preparation method thereof provided by the invention, during the casting of the cast steel hammerhead, the temperature and the time for austenitizing and isothermally quenching are set, so that the obtained hammerhead has the characteristics of high hardness and high toughness; and on the basis of a traditional chromium manganese cast steel hammerhead, the content of ferronickel ferroniobium is added, and the proportion of the various components are adjusted, so that the cast crusher hammerhead has high hardness, wear resistance and toughness, and has high corrosion resistance at the same time.

Description

technical field [0001] The invention relates to the technical field of crushing equipment, in particular to a corrosion-resistant crusher hammer head and a preparation method thereof. Background technique [0002] The hammer crusher is a kind of equipment that crushes materials in the form of impact, and it is divided into two forms: single rotor and double rotor. It is a first-stage crushing crusher that directly crushes materials with a maximum particle size of 600-1800 mm to 25 mm or less. Hammer crushers are suitable for crushing medium-hard materials in industrial sectors such as cement, chemical industry, electric power, and metallurgy, such as secondary and fine crushing of limestone, slag, coke, coal and other materials. The hammer crusher is composed of a box, a rotor, a hammer head, an impact liner, a sieve plate, etc. The hammer head is the most important working part of the hammer crusher, and the quality, shape and material of the hammer head determine the hamm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/48C22C38/44C22C38/58C22C38/04C22C38/02C22C38/56C22C38/46C22C33/06C21D9/00C21D1/20B02C13/28
CPCB02C13/28C21D1/20C21D9/0068C22C33/06C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/56C22C38/58Y02P10/20
Inventor 李根有李骏
Owner NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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