High-strength high-hardness high-chromium cast iron plate hammer and preparation method thereof

Abstract

The invention discloses a high-strength high-hardness high-chromium cast iron plate hammer and a preparation method thereof. The high-strength high-hardness high-chromium cast iron plate hammer comprises the following chemical components by mass percent: 23.4-29.8% of Cr, 4.2-5.6% of Ni, 1.2-1.8% of Mo, 1.8-2.6% of Si, 3.2-4.0% of C, 0.25-0.45% of Mn, 1.4-2.2% of Zr, 1.0-1.5% of Ti, 0.3-0.7% of Ta, 0.5-1.0% of Mg, 0.4-0.6% of Cu, 0.3-0.5% of Al, 0.05-0.1% of Nd, 0.03-0.06% of Er, 0.03% or less of S, 0.06% or less of P and the balance Fe. The cast iron plate hammer prepared through the preparation method is good in comprehensive property, high in mechanical strength, hardness and abrasion resistance, low in cost, durable in use, and wide in market prospect, and is safe and reliable; and the production technology is simple and is high in efficiency.

Description

technical field [0001] The invention relates to the technical field of cast iron materials, in particular to a high-strength, high-hardness, high-chromium cast iron 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 strength and toughness of the material. Although ordinary high-chromium cast iron has good wear resistance, its strength and hardness are not high, and the blow bar is prone to breakage during use, which will cause shutdown and production shutdown, an...

AI Technical Summary

Problems solved by technology

Although ordinary high-chromium cast iron has good wear resistance, its strength and hardness are not high, and the blow bar is prone to breakage during use, which will cause shutdown and stop production, and may even cause damage to the crusher in severe cases.