Wear-resisting, high-toughness and high-strength excavator bucket tooth and manufacturing method thereof

Abstract

The invention provides a wear-resisting, high-toughness and high-strength excavator bucket tooth and a manufacturing method thereof. The wear-resisting, high-toughness and high-strength excavator bucket tooth is prepared from the following element components in percentage by weight: 3.4 to 3.9 percent of C, 2.3 to 2.6 percent of Si, 0.65 to 0.9 percent of Mn, 0.2 to 0.4 percent of Mg, 1.2 to 1.6 percent of Cu, 0.35 to 0.5 percent of Cr, 0.05 to 0.1 percent of Ce, 0.05 to 0.11 percent of Mo, 0.1 to 0.25 percent of Te, 0.05 to 0.08 percent of Y, 0.008 to 0.02 percent of Nd, less than or equal to0.02 percent of P, less than or equal to 0.02 of S and the balance of Fe. The manufacturing method mainly comprises the steps of melting, carrying out spheroidization treatment and inoculation treatment, forging and carrying out heat treatment; the excavator bucket tooth prepared by the invention has good wear resistance and high strength and also has excellent toughness; the manufacturing methodis simple and efficient.

Description

technical field [0001] The invention relates to the technical field of excavators, in particular to a wear-resistant, high-toughness, high-strength excavator bucket tooth and a manufacturing method thereof. Background technique [0002] On the construction site, the excavator is a kind of machine that is often used. If there is no excavator, the construction progress will be very slow if it is all manual. The bucket teeth on the excavator are the key parts of the work. Excavator bucket teeth are wearing parts that are consumed in large quantities in mining operations. The working conditions are harsh, and most of the failure modes are wear and tear, and a few of them are broken. The bucket teeth are in direct contact with ore, sand, rock and other materials. When in contact with materials, it not only bears the impact, but also bears the bending moment. During the service process, the tip of the bucket teeth is subject to large impact and sliding abrasive wear, and various...

AI Technical Summary

Problems solved by technology

With the improvement of excavator bucket teeth performance requirements, the existing excavator bucket teeth are often difficult to meet the market demand

[0003] The Chinese invention patent with the publication number CN 103014519 A discloses a "silicon-manganese alloy steel bucket tooth casting for excavators and its processing technology", which adds Ca, Mg and rare earth elements Y and Nd to purify molten steel and refine The crystal grains are reduced, the shape and distribution of impurities can be improved, and the comprehensive strengthening of alloy steel can be realized, thereby improving the wear resistance and service life of bucket teeth. At the same time, by adopting a reasonable heat treatment process, the hardness and impact resistance of alloy steel can be improved. Significantly improved, but its impact toughness is 23J / cm 2 , unable to meet market requirements for high toughness of excavator bucket teeth

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