Slag making material for high manganese steel purification treatment

Abstract

The invention discloses a slag making material for high manganese steel purification treatment. The slag making material for high manganese steel purification treatment is prepared from the followingraw materials in parts by weight: 25 to 53 parts of activated clay powder, 7 to 13 parts of talcum powder, 10 to 16 parts of palygorskite powder, 4 to 6 parts of montmorillonite powder, 32 to 64 partsof quicklime powder, 9 to 15 parts of fluorite powder, 5 to 8 parts of mineral wool, and 1 to 2 parts of binding agent. The slag making material provided by the invention contains the activated claypowder, the talcum powder, the palygorskite powder, the montmorillonite powder, the quicklime powder and the fluorite powder with low melting points and high activity, so that impurities such as hydrogen and oxygen in molten steel are favorably removed, the contents of harmful elements and impurities in steel are reduced, a slag sucking effect is achieved, the quality of the molten steel is greatly improved, the high-purity wear-resistant material is made favorably, meanwhile, the dosage of the slag making material is reduced, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of high-performance new materials and metallurgy technology, and in particular relates to a slagging material for purification treatment of high manganese steel. Background technique [0002] High manganese steel is a traditional wear-resistant material. After more than one hundred years of development, three series of manganese 13, manganese 18 and manganese 25 have been formed. Among them, manganese 13 has formed international and domestic standards and is relatively mature. Manganese 18 has only international standards, and manganese 25 is more difficult to produce, so there are only internal standards for the company for the time being. Because the microstructure of high manganese steel is single-phase austenite or austenite with a small amount of carbide, it has good toughness and plasticity, and the crack growth rate is very low, so it is safe and reliable to use. Another feature is that under the action of a...

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Problems solved by technology

[0016] At present, most of the domestic smelting equipment and processes adopt the non-oxidizing smelting process, but the current system for refining high manganese steel has the following disadvantages: First, it cannot detect the washing degree of the argon gas to the furnace lining during the purification process of high manganese steel liquid, and the choice is better Second, when the molten high manganese steel leaks out of the furnace lining and conducts with the furnace shell, it cannot well avoid the occurrence of furnace accidents; the third is to purify the refined high manganese steel for oxygen and The hydrogen effect is poor, which affects the quality of the product; Fourth, the quality of the breathable brick used in the refining high manganese steel system is poor, which affects the effect of argon blowing, thereby affecting the purification effect of oxygen and hydrogen in the refined steel water. Therefore, in view of the above defects, Urgent need to improve the existing medium frequency induction furnace

[0019] (1) During the use of traditional permeable bricks, due to the sharp change of the use temperature, problems such as peeling and falling blocks are prone to occur; some even break during use, resulting in unsmooth blowing of argon, and serious leakage of molten steel

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