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Preparation method of high-manganese low-chromium alloy wear-resisting ball

A chromium alloy and wear-resistant ball technology, which is applied in the field of preparation of high-manganese and low-chromium alloy wear-resistant balls, can solve the problems of aggravating columnar grains, and achieve the effects of refining grains, increasing hardness, and increasing elongation

Inactive Publication Date: 2016-02-17
NINGGUO SOUTHERN WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production of low chromium casting balls, excessive manganese content will aggravate the formation of columnar crystals

Method used

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  • Preparation method of high-manganese low-chromium alloy wear-resisting ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of a high manganese low chromium alloy wear-resistant ball, comprising the steps of:

[0033] S1. Melt carbon powder, chromium ingot, manganese ingot, molybdenum ingot, nickel ingot, vanadium ingot, borax, antimony sand, tungsten ingot, niobium ingot, tantalum ingot, phosphorus powder and sulfur powder to obtain alloy liquid, and use argon gas The tank is sprayed with argon gas, and the nano-modifier is evenly dispersed in the alloy liquid for modification treatment;

[0034] S2. Add a covering agent to the surface of the modified alloy liquid in S1, calm down, refine and desulfurize, deoxidize, and detect. The alloy liquid includes the following components by weight percentage: C: 2.60%; Cr: 2.0%; Mn: 12.30%; Mo: 0.34%; Ni: 0.35%; Rare Earth: 0.17%; V: 0.23%; B: 0.20%; Ti: 0.06%; 0.04%; S: 0.03%, the balance is iron and unavoidable impurities;

[0035] S3. The alloy liquid obtained in S2 is poured, casted, cleaned, and the casting is obtained. Th...

Embodiment 2

[0040] A preparation method of a high manganese low chromium alloy wear-resistant ball, comprising the steps of:

[0041] S1. Melt carbon powder, chromium ingot, manganese ingot, molybdenum ingot, nickel ingot, vanadium ingot, borax, antimony sand, tungsten ingot, niobium ingot, tantalum ingot, phosphorus powder and sulfur powder to obtain alloy liquid, and use argon gas The tank is sprayed with argon gas, and the nano-modifier is evenly dispersed in the alloy liquid for modification treatment;

[0042] S2. Add a covering agent to the surface of the modified alloy liquid in S1, calm down, refine and desulfurize, deoxidize, and detect. The alloy liquid includes the following components by weight percentage: C: 2.5%; Cr: 2.5%; Mn: 11.20%; Mo: 0.4%; Ni: 0.3%; Rare Earth: 0.20%; V: 0.15%; B: 0.3%; 0.06%, the balance is iron and unavoidable impurities;

[0043] S3, pouring the alloy liquid obtained in S2, casting and cleaning to obtain castings, preheating the castings at 950°C f...

Embodiment 3

[0048] A preparation method of a high manganese low chromium alloy wear-resistant ball, comprising the steps of:

[0049] S1. Melt carbon powder, chromium ingot, manganese ingot, molybdenum ingot, nickel ingot, vanadium ingot, borax, antimony sand, tungsten ingot, niobium ingot, tantalum ingot, phosphorus powder and sulfur powder to obtain alloy liquid, and use argon gas The tank is sprayed with argon gas, and the nano-modifier is evenly dispersed in the alloy liquid for modification treatment;

[0050] S2. Add a covering agent to the surface of the modified alloy liquid in S1, calm down, refine desulfurization, deoxidize, and detect. The alloy liquid includes the following components by weight percentage: C: 2.8%; Cr: 1.5%; Mn: 13.50%; Mo: 0.3%; Ni: 0.4%; Rare Earth: 0.15%; V: 0.30%; B: 0.1%; 0.08%, the balance is iron and unavoidable impurities;

[0051] S3, pouring the alloy liquid obtained in S2, casting and cleaning, to obtain castings, preheating the castings at 1050°C...

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Abstract

The invention provides a preparation method of a high-manganese low-chromium alloy wear-resisting ball. The preparation method comprises the steps that raw materials are firstly smelted to obtain alloy liquid, and modification is carried out on the alloy liquid; a covering agent is added to the surface of the alloy liquid obtained after modification, still standing is carried out, refining desulfuration and deoxygenation are carried out, and detection is carried out; the alloy liquid is poured, and a casting is obtained through casting forming and cleaning; and the casting is precooled, the precooled casting is placed in a NaNO2 saline solution for quenching treatment, tempering treatment is carried out after quenching is finished, and finally the finished high-carbon middle-chromium alloy wear-resisting ball is obtained after the casting is cooled to room temperature. According to the prepared high-manganese low-chromium alloy wear-resisting ball, tensile strength is improved by 0.7%, yield strength is improved by 6.1%, ductility is improved by 10.8%, impact toughness is improved by 17.9%, and hardness is improved by 0.3 of HRC.

Description

technical field [0001] The invention relates to the technical field of grinding machinery, in particular to a preparation method of a high-manganese-low-chromium alloy wear-resistant ball. Background technique [0002] High manganese and low chromium alloy wear-resistant balls are widely used in powder preparation and ultra-fine deep processing in cement building materials, metal mines, coal slurry thermal power, chemical engineering, ceramic coatings, light industry papermaking, magnetic materials and other industries. High manganese and low chromium alloy wear-resistant balls have the advantages of high hardness, low wear, good toughness, and less breakage. [0003] The chromium in the wear-resistant ball can strongly form carbides, which can refine the grains, refine the carbides, improve the distribution of carbides, increase the strength and hardness of the balls, but reduce the impact toughness. [0004] Manganese can strongly increase the stability of carbides, impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C21D1/18
Inventor 熊夏鸣
Owner NINGGUO SOUTHERN WEAR RESISTANT MATERIALS
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