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

A technology with ultra-high performance and production methods, applied in the field of metallurgy, can solve the problems of low wear resistance and service life, little change in comprehensive mechanical properties, and inability to guarantee service life, so as to improve comprehensive mechanical properties and facilitate popularization and application , the effect of low production cost

Active Publication Date: 2008-06-04
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 of the present invention takes the production of ultra-high-performance wear-resistant high-manganese steel ball mill liner steel (10 tons of molten steel) as an example. The chemical composition of this steel is (weight percentage) C: 1.23%, Mn: 12.65%, Si : 0.56%, Cr: 1.58%, S: 0.018%, P: 0.043%, Ti: 0.11%, V: 0.14%, B: 0.005%, Mg: 0.09%, RE: 0.15%, N: 0.09%, remainder The amount is iron.

[0023] The production method of the steel grade includes adopting the element ratio of conventional steel grades and the unique alloying process of the invention. When the molten steel temperature reaches 1500-1550°C, add 200kg of ferromanganese nitride and 40kg of calcium silicon 5 minutes after reduction; insert 0.6-1kg / t of aluminum 10 minutes before tapping and add 30kg of ferrovanadium (containing 50% vanadium, yield 95%), add 70kg of ferrotitanium (containing 30% of titanium and yield 50%); when tapping to 1 / 3, add 30kg of rare earth magnesium in the tank (containi...

Embodiment 2

[0031] Example 2 of the present invention takes the production of ultra-high-performance wear-resistant high-manganese steel for the lining plate of a cone crusher (10 tons of molten steel) as an example. The chemical composition of the steel is (weight percentage) C: 1.20%, Mn: 12.95% , Si: 0.51%, Cr: 1.68%, S: 0.019%, P: 0.045%, Ti: 0.12%, V: 0.17%, B: 0.0045%, Mg: 0.085%, RE: 0.14%, N: 0.08% , and the balance is iron.

[0032]The production method of the steel grade includes adopting the element ratio of conventional steel grades and the unique alloying process of the invention. When the molten steel temperature reaches 1500-1550°C, add 200kg of ferromanganese nitride and 40kg of calcium silicon 5 minutes after reduction; insert 0.6-1kg / t of aluminum 10 minutes before tapping and add 30kg of ferrovanadium (containing 50% vanadium, yield 95%), add 75kg of ferrotitanium (containing 30% of titanium and yield 50%); when tapping to 1 / 3, add 30kg of rare earth magnesium in the t...

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PUM

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C33/04
Inventor 张东海
Owner ANSTEEL GRP MINING CO LTD
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