Wear-resisting cast steel

Abstract

The invention provides wear-resisting cast steel. The cast steel comprises the following chemical components by weight percent: 0.3-0.4% of C, 1.8-2.2% of Mn, 0.8-1.2% of Cr, 0.6-1.0% of Si, 0.02-0.05% of Mo, 0-1.0% of Ni, 0-1.0% of V, 0-1.0% of Ti, 0-1.0% of Re, less than or equal to 0.04% of P, less than or equal to 0.04% of S, and the balance of Fe. Compared with the existing wear-resisting cast steel, the wear-resisting cast steel has the advantages that the content of manganese is improved and the content of molybdenum is lowered, thus the cost is lowered under the premise of guaranteeing the hardenability of the cast steel; the content of manganese is improved but the content of silicon is lowered, so that the wear-resisting cast steel is improved in thermal conductivity so as to avoid generating cracks in water quenching; furthermore, by regulating the content of carbon, manganese, chrome, silicon and molybdenum, the wear-resisting cast steel is improved in impact toughness and hardness, is not easy to break and has excellent wear-resisting property.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant cast steel, and in particular relates to a wear-resistant cast steel and a production method thereof. Background technique [0002] The current wear-resistant cast steel for the production of ball mill liners and jaw crusher jaws usually uses low-carbon chromium-molybdenum-silicon-manganese cast steel, and its main chemical composition (wt%) is: C, 0.25-0.35; Mn, 0.6-1.5; Cr, 0.5-2.0; Si, 0.5-1.5; Mo, 0.2-0.5 and Fe. However, the main disadvantages of the wear-resistant cast steel are: the castings are prone to cracks after water quenching; the castings are prone to breakage during use; [0003] In order to solve the above deficiencies, the existing technology hopes to add precious metal elements such as Mo and Ni to the material or greatly increase the content of alloy elements through alloying to enhance the hardenability of wear-resistant cast steel, thereby improving the wear resistanc...

AI Technical Summary

Problems solved by technology

However, the main disadvantages of this wear-resistant cast steel are: the castings are prone to cracks after water quenching;

[0003] In order to solve the above deficiencies, the existing technology hopes to add precious metal elements such as Mo and Ni to the material or greatly increase the content of alloy elements through alloying to enhance the hardenability of wear-resistant cast steel, thereby improving the wear resistance and durability of castings. Impact resistance, but after practical application, it is found that none of them can reach the ideal state, and there are still deficiencies such as cracks in water quenching, easy to break during use, and high production costs.