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Method for preparing abrasion-resistant balls for flue gas desulfurization ball mills

A technology of desulfurization balls and wear-resistant balls, applied in the direction of manufacturing tools, heat treatment equipment, coatings, etc., can solve problems such as easy damage and poor wear resistance, reduce heat treatment deformation, eliminate internal defects, improve wear resistance and The effect of fatigue strength

Inactive Publication Date: 2016-08-24
MAANSHAN YIFENG INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current wear-resistant balls have disadvantages such as poor wear resistance and easy damage, and further improvement and research are needed on the preparation method of wear-resistant balls.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A method for preparing wear-resistant balls for flue gas desulfurization ball mills includes the following process steps:

[0013] 1) The alloy components and weight percentages in the casting hot metal are: C2.3%, Si0.7%, Mn0.6~0.9%, Mo0.4%, S0.008%, Cr2.25%, Ni0.06% , Ti0.2%, W0.08%, Ni0.2%, the balance is iron;

[0014] 2) Carbonitriding treatment: The temperature of the gas carbonitriding furnace is 600-650℃, the treatment time is 35-40min, and the gas is composed of nitrogen monoxide and carbon dioxide in a volume ratio of 3:5;

[0015] 3) Vacuum heat treatment: in a vacuum medium with a vacuum of 0.04-1.2Pa, the heat treatment temperature is 320-380℃, the heat treatment time is 30-60min, and then it is reduced to room temperature at 20℃ / min;

[0016] 4) Anti-rust treatment: soak in anti-rust oil for 20-25 minutes, the anti-rust oil is composed of the following components in weight percentage: chlorinated paraffin 4-7%, sodium dodecylbenzene sulfonate 4-9 %, sodium hexame...

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Abstract

The invention discloses a method for preparing abrasion-resistant balls for flue gas desulfurization ball mills. The method includes a technological step that cast molten iron comprises, by weight, 2.1-2.5% of C, 0.5-0.9% of Si, 0.6-0.9% of Mn, 0.3-0.5% of Mo, 0.004-0.012% of S, 2.1-2.4% of Cr, 0.04-0.08% of Ni, 0.15-0.25% of Ti, 0.05-0.11% of W, 0.15-0.25% of Ni and the balance iron. The method has the advantages that internal defect of materials can be effectively eliminated, the abrasion resistance and the fatigue strength of the abrasion-resistant balls can be improved, the method is free of oxidation, decarburization and element dilution, heat treatment deformation of the abrasion-resistant balls can be reduced, and the like.

Description

Technical field [0001] The invention relates to the field of wear-resistant balls, in particular to a method for preparing wear-resistant balls for flue gas desulfurization ball mills. Background technique [0002] Wear-resistant balls are widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulfurization, magnetic materials, chemicals, coal water slurry, pellets, slag, ultrafine powder, fly ash, calcium carbonate, quartz sand and other industries . The current wear-resistant balls have disadvantages such as poor wear resistance and easy damage, and further improvement and research are needed for the preparation methods of wear-resistant balls. Summary of the invention [0003] The purpose of the present invention is to provide a method for preparing wear-resistant balls for flue gas desulfurization ball mills. The internal defects of the materials are effectively eliminated, and the wear resistance and fatigue strength of the wear-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/74C21D9/36C23C8/32C22C37/10C10M169/04C10N10/02C10N30/12C10N40/20
CPCC10M169/04C10M2201/085C10M2207/289C10M2207/40C10M2213/00C10M2219/044C10N2010/02C10N2030/12C10N2040/246C10N2040/48C21D1/74C21D9/36C22C37/08C22C37/10C23C8/32
Inventor 潘政桃李家宝张学伍
Owner MAANSHAN YIFENG INDAL GROUP
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