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High-chromium high-tungsten wear-resisting cast iron plate hammer of crusher and preparation method thereof

A wear-resistant cast iron and crusher technology, applied in the field of cast iron materials, can solve the problems of failure to meet the crushing requirements, damage of the crusher, breakage of the blow bar, etc., and achieve the goal of controlling carbide content, improving wear resistance, and refining grains Effect

Inactive Publication Date: 2015-12-09
HUOQIU ZHONGZHEN WEAR RESISTANT MATERIAL
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Although ordinary high-chromium cast iron has good wear resistance, it still cannot meet the crushing requirements for crushing high-strength and high-hardness materials. During use, the blow bar is prone to breakage, which will cause shutdown and stop production, and may even cause crushing in severe cases. machine damage

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0014] A high chromium and high tungsten wear-resistant cast iron crusher blow bar, its chemical composition and mass percentage are: Cr26.7-31.2, Si0.9-1.7, C2.8-3.6, Mo1.5-2.5, Mn0.03 -0.06, W1.6-2.7, Mg0.8-1.4, Ni0.2-0.5, Cu0.3-0.6, Al0.15-0.35, Ge0.1-0.3, Pr0.06-0.09, Yb0.04-0.08 , S≤0.05, P≤0.05, and the balance is Fe.

[0015] A method for preparing a high chromium and high tungsten wear-resistant cast iron crusher blow bar, comprising the following steps:

[0016] (1) Smelting in an intermediate frequency induction furnace, first add scrap steel, scrap iron, pig iron and ferrochrome to melt, then add ferrotungsten, ferromolybdenum, nickel, copper, germanium in turn, adjust the composition of molten iron after all of them are melted, and then Add ferromanganese and ferrosilicon successively within 5-10 minutes before the furnace is released, add pure aluminum within 2-4 minutes before the furnace is released for deoxidation, conduct chemical composition analysis before ...

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Abstract

The invention discloses a high-chromium high-tungsten wear-resisting cast iron plate hammer of a crusher and a preparation method thereof. The plate hammer is prepared from chemical components of, by mass, 26.7%-31.2% of Cr, 0.9%-1.7% of Si, 2.8%-3.6% of C, 1.5%-2.5% of Mo, 0.03%-0.06% of Mn, 1.6%-2.7% of W, 0.8%-1.4% of Mg, 0.2%-0.5% of Ni, 0.3%-0.6% of Cu, 0.15%-0.35% of Al, 0.1%-0.3% of Ge, 0.06%-0.09% of Pr, 0.04%-0.08% of Yb, 0-0.05% of S, 0-0.05% of P, and the balance Fe. The manufactured cast iron plate hammer of the crusher has superior mechanical performance and wear resistance, the wear resistance is over 2.5 times that of a plate hammer made of common high-chromium cast iron, and the service life is prolonged by over 4 times compared with the plate hammer made of the common high-chromium cast iron; the plate hammer is durable, safe and reliable, and has good economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of cast iron materials, in particular to a high-chromium and high-tungsten wear-resistant cast iron crusher blow bar and a preparation method thereof. Background technique [0002] Crusher is a kind of crushing mechanical equipment widely used in construction, metallurgy, mining, cement and other industries. Among them, the blow bar is the main wear part of the crusher. It crushes the material during high-speed rotation. At the same time, the surface of the workpiece bears the reaction force of the material. The working environment is very harsh, especially when crushing high-strength and high-hardness difficult-to-break materials. , higher requirements are placed on the wear resistance of the material. Although ordinary high-chromium cast iron has good wear resistance, it still cannot meet the crushing requirements for crushing high-strength and high-hardness materials. During use, the blow bar is prone to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08C21D5/00C21D1/18
CPCY02P10/20
Inventor 周浩周洁
Owner HUOQIU ZHONGZHEN WEAR RESISTANT MATERIAL
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