Ultra-high performance wearable high-manganese steel and producing method thereof

Abstract

The invention provides ultra-high-performance abrasion-resistant high manganese steel and the production method thereof. The chemical compositions of the steel are that: carbon of 1.00 to 1.50 percent; manganese of 10.5 to 20.0 percent; silicon of 0.30 to 0.80 percent; chromium of 1.3 to 2.8 percent; sulfur of less than or equal to 0.040 percent; phosphorus of less than or equal to 0.070 percent; titanium of 0.06 to 0.20 percent; vanadium of 0.10 to 0.40 percent; boron of 0.002 to 0.010 percent; magnesium of 0.06 to 0.3 percent; rhenium of 0.08 to 0.4 percent; nitrogen of 0.05 to 0.2 percent; the remainder is iron. The production method is that: when the molten steel temperature reaches between 1500 and 1550 DEG C, the nitrogen and the calcium are added within 5 minutes after the molten steel is reduced, the aluminum is inserted and the vanadium (2 to 5 kg / t) and the titanium (4 to 10 kg / t) are added within 10 minutes before steel tapping, the rare earth magnesium (2 to 6 kg / t) is added into a tank when one-third steel is tapped, the rare earth silicon (1 to 4 kg / t) is added into the tank when one-second steel is tapped, the boron (0.1 to 0.3 kg / t) is added into the tank when two-third steel is tapped, the casting temperature of the molten steel is controlled between 1430 and 1460 DEG C. The invention adopts new alloying process, improves the abrasion- resistant performance and the comprehensive mechanical performance of the high manganese steel.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to steel for wear-resistant parts in the foundry industry and a production method thereof. Background technique [0002] At present, most of the known wear-resistant high manganese steels are based on the existing ordinary high manganese steels by adding some commonly used alloying elements to improve their wear resistance, so as to increase the service life of high manganese steel wear parts. But the result is often: the hardness of some wear-resistant parts is increased, but the toughness is very low, easy to crack, and its service life cannot be guaranteed; the toughness of some wear-resistant parts is improved, but the hardness is very low, easy to wear, and cannot be guaranteed its service life. In short, its comprehensive mechanical properties do not change much, and its wear resistance and service life are not high. Contents of the invention [0003] The object of the ...

AI Technical Summary

Problems solved by technology

But the result is often: the hardness of some wear-resistant parts is increased, but the toughness is very low, easy to crack, and its service life cannot be guaranteed; the toughness of some wear-resistant parts is improved, but the hardness is very low, easy to wear, and cannot be guaranteed its service life

In short, its comprehensive mechanical properties do not change much, and its wear resistance and service life are not high.