Alloy material for crusher hammerhead and preparation method thereof

Abstract

The invention relates to an alloy material for a crusher hammerhead, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.7-0.9% of silicon, 3.2-3.5% of manganese, 3.6-3.8% of chromium, 1.7-1.9% of molybdenum, 0.2-0.5% of titanium, 0.02-0.04% of Sb, 0.01-0.02% of Lu, 0.02-0.03% of Ga, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using the low-carbon steel as the main material, the material has favorable toughness; the material contains the Sb, Lu, Ga and many other alloy elements, so that the alloy has high hardness, high wear resistance and high hot strength; and the material is suitable for a medium-size crusher and used for crushing ores with moderate hardness, the service life can be prolonged by 1 time or so as compared with high-chromium cast iron, and the cost is lower. When the refining agent is used for casting production, no pores can be generated on the casting surface, and the included oxide content is obviously lowered.

Description

technical field [0001] The invention relates to the field of wear-resistant metal materials, in particular to an alloy material for hammer heads of crushers and a preparation method thereof. Background technique [0002] There are many types of hammer head materials, the most commonly used is high manganese steel, initially because of its relatively high hardness and wear resistance, but now people find that this is not the case. In some cases, high manganese steel hammer heads are not wear-resistant and have a short service life. , the reason is that high manganese steel can only produce a high hardness surface hardened layer under the condition of large impact force, but it is not wear-resistant under the condition of small impact force; there is also medium manganese steel hammer head, because of its relatively High hardness and toughness, durable and magnetic when the impact force is not too large; high chromium cast iron hammer has excellent wear resistance, but poor to...

AI Technical Summary

Problems solved by technology

[0002] There are many types of hammer head materials, the most commonly used is high manganese steel, initially because of its relatively high hardness and wear resistance, but now people find that this is not the case. In some cases, high manganese steel hammer heads are not wear-resistant and have a short service life. , the reason is that high manganese steel can only produce a high hardness surface hardened layer under the condition of large impact force, but it is not wear-resistant under the condition of small impact force; there is also medium manganese steel hammer head, because of its relatively High hardness and toughness, more durable when the impact force is not too large, and magnetic; high chromium cast iron hammer has excellent wear resistance, but poor toughness, prone to brittle fracture

All kinds of materials cannot achieve the ideal effect, so seeking reasonable materials, developing simple and practical processes, and saving resources and energy on the premise of ensuring the use requirements have become hot spots and difficulties in the field of wear-resistant materials.