Alloy steel hammerhead material for small-size crusher and preparation method thereof

Abstract

The invention relates to an alloy steel hammerhead material for a small-size crusher, which contains the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.8-1.0% of silicon, 2.1-2.3% of manganese, 5.2-5.5% of chromium, 0.8-1.1% of molybdenum, 0.2-0.3% of vanadium, 2.6-2.8% of titanium, 0.15-0.25% of V, 0.08-0.12% of Te, 0.5-0.7% of Zr, at most 0.05% of S, at most 0.05% of P and the balance of iron. By using medium-manganese low-carbon steel as the main material, the material has favorable toughness; the material contains the Zr, V, chromium, molybdenum and many other alloy elements, and thus, has the characteristics of higher strength, excellent high temperature resistance and excellent corrosion resistance; and the material is suitable for small-size working conditions with non-severe impact, and the service life is 2-3 times longer than that of common low alloy steel. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, and the oxide inclusions are lowered by 2 levels or so.

Description

technical field [0001] The invention relates to the field of wear-resistant metal materials, in particular to an alloy steel hammer head material for a small pulverizer 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,...

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.