Abrasion resistant alloy cast steel product

Abstract

The invention relates to an abrasion resistant alloy cast steel product which is especially suitable for field mining equipment, has ultra-high hardness and toughness and can meet the requirements of severe environments such as high strength environment, low temperature environment and the like. The cast steel comprises the following chemical components by weight percent: 0.27-0.32% of C, 0.70-0.90% of Mn, 0.90-1.30% of Si, 1.40-1.80% of Cr, 0.10-0.20% of Mo, 0.10-0.20% of Ni, 0.02-0.03% of Ti and 0.10-0.15% of Cu. The alloy steel has the following technical characteristics: the production process is simple, the cost is low, the obdurability is high, the quenching degree and the hardening capacity are good, no pollution is caused, the alloy steel can be used for preparing abrasion resistant engineering mechanical equipment which is in contact with the cold rock and freezing zone in an environment with low temperature ranging from minus 20 DEG C to 0 DEG C, and the equipment is suitable for working in the cold zone environment for a long time.

Description

technical field [0001] The invention relates to a wear-resistant alloy cast steel product, in particular a wear-resistant alloy cast steel product with ultra-high hardness and toughness, which can be used in multi-skilled mining equipment in the field, can be adapted to harsh environmental requirements such as high strength and low temperature. Background technique [0002] Wear and tear is common in many industrial sectors such as metallurgy, mining, machinery, electric power, chemical industry, building materials, coal, petroleum, transportation, military industry, aerospace, etc., and has become an important cause of equipment failure or material damage. It not only causes equipment parts to fail, but also causes The workpieces are frequently replaced and repaired, the efficiency of the equipment is reduced, and a large amount of energy and materials are consumed. Wear and tear lost 1 / 3 of the world's primary energy, and 70% of the damage to electromechanical equipment wa...

AI Technical Summary

Problems solved by technology

However, it is impossible to achieve an effective unification, especially in the application of outdoor mining, excavation and other construction machinery.

The wear resistance of high manganese steel is conditional, and its yield strength is low and easy to deform; low and medium alloy wear resistant steel has better strength and toughness, and its wear resistance under low and medium impact loads is better than that of high manganese steel , but there are problems of low hardenability and hardenability, and poor wear resistance; the structure of high-chromium cast iron contains more than 20% of high-hardness eutectic carbides, which has excellent wear resistance, but there are high content of alloying elements, High production cost and high temperature heat treatment are prone to deformation and cracking; ordinary white cast iron and low alloy white cast iron have low hardness, carbides are distributed continuously, and are brittle. They are easy to peel off or even crack during use.