Energy-saving smelting technology for preparing high-chromium balls by utilizing waste chromium-containing steel balls and high-chromium ball prepared by technology

A technology of chromium-containing steel and high-chromium steel balls, which is applied in the energy-saving smelting process and the field of high-chromium balls produced, can solve the problems of waste, elimination, and decline in the effectiveness of grinding parts, and achieve reduced energy consumption, low deformation resistance, cost reduction effect

Active Publication Date: 2016-12-07
安徽中建材开源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chromium-containing steel balls, which are widely used in various industries, due to continuous mechanical friction, after long-term high-intensity fatigue work, the effectiveness of the abrasive parts decreases significantly, and they are eventually discarded and eliminated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An energy-saving smelting process for preparing high-chromium steel balls by using waste chromium-containing steel balls, comprising the following steps:

[0021] (1) putting waste chromium-containing steel balls into an electrolytic cell for wet separation to obtain separated alloy materials;

[0022] (2) the component content of C, Si, Mn, Nb, Ni, Al, Cu and Cr in the alloy material that detection step (1) obtains;

[0023] (3) Add ferromolybdenum, waste quick gray iron, chromium steel in 2-4 times, and adjust the content of each component in the alloy material as follows: C≤0.025wt%, Si:0.12wt%, Mn:0.36wt%, Nb: 0.08wt%, Ni:0.29wt%, Al:0.01wt%, Cu:0.52wt%, Cr:10.4wt%, the balance is Fe and unavoidable impurities;

[0024] (4) Use a smelting furnace to smelt the alloy material. When smelting, blow oxygen-enriched air into the furnace, and blow O in the gas. 2 Flow rate and feed rate meet 250-320Nm 3 / t, the smelting temperature is 1485-1550°C, after desulfurization,...

Embodiment 2

[0027] An energy-saving smelting process for preparing high-chromium steel balls by using waste chromium-containing steel balls, comprising the following steps:

[0028] (1) putting waste chromium-containing steel balls into an electrolytic cell for wet separation to obtain separated alloy materials;

[0029] (2) the component content of C, Si, Mn, Nb, Ni, Al, Cu and Cr in the alloy material that detection step (1) obtains;

[0030] (3) Add ferromolybdenum, waste quick gray iron, chromium steel in 2-4 times, adjust the content of each component in the alloy material as follows: adjust the content of each component in the alloy material as follows: C: 0.025wt%, Si: 0.18wt% %, Mn: 0.33wt%, Nb: 0.1wt%, Ni: 0.25wt%, Al: 0.02wt%, Cu: 0.42wt%, Cr: 10.9wt%, the balance is Fe and unavoidable impurities;

[0031] (4) Use a smelting furnace to smelt the alloy material. When smelting, blow oxygen-enriched air into the furnace, and blow O in the gas. 2 Flow rate and feed rate meet 250-3...

Embodiment 3

[0034] An energy-saving smelting process for preparing high-chromium steel balls by using waste chromium-containing steel balls, comprising the following steps:

[0035] (1) putting waste chromium-containing steel balls into an electrolytic cell for wet separation to obtain separated alloy materials;

[0036] (2) the component content of C, Si, Mn, Nb, Ni, Al, Cu and Cr in the alloy material that detection step (1) obtains;

[0037] (3) Add ferromolybdenum, waste quick gray iron, chromium steel in 2-4 times, and adjust the content of each component in the alloy material as follows: C≤0.025wt%, Si:0.22wt%, Mn:0.28wt%, Nb: 0.15wt%, Ni: 0.12wt%, Al: 0.05wt%, Cu: 0.16wt%, Cr: 12.2wt%, the balance is Fe and unavoidable impurities;

[0038] (4) Use a smelting furnace to smelt the alloy material. When smelting, blow oxygen-enriched air into the furnace, and blow O in the gas. 2 Flow rate and feed rate meet 250-320Nm 3 / t, the smelting temperature is 1485-1550°C, after desulfurizat...

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Abstract

The invention relates to the technical field of metallurgical production, in particular to an energy-saving smelting technology for preparing high-chromium balls by utilizing waste chromium-containing steel balls and a high-chromium ball prepared by the technology. The technology comprises the following steps: carrying out electrolytic separation on the waste chromium-containing steel balls, feeding materials, smelting, hot-rolling, cold-rolling, molding, polishing and the like. The smelting technology provided by the invention is low in realizing difficulty and is favorable to saving energy, and the wear resistance of the prepared high-chromium balls is great.

Description

technical field [0001] The invention relates to the technical field of metallurgical production, in particular to an energy-saving smelting process for preparing high-chromium balls by using waste chromium-containing steel balls and the high-chromium balls produced. Background technique [0002] Chromium-containing steel ball is the largest wear-resistant material consumable in the world's crushing industry at present and even in the foreseeable future. It is widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulfurization, aerated concrete, magnetic materials, chemical industry, Coal water slurry, pellets, slag, ultrafine powder, fly ash, calcium carbonate and quartz sand industries. Chromium-containing steel balls are usually produced by melting in an intermediate frequency induction furnace, metal mold or sand casting, and are called cast steel balls. Cast steel balls are divided into high-chromium steel balls, medium-chro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/48C22C38/42C22C38/02C22C38/04C22C38/06C22C33/04
CPCC22C33/04C22C38/02C22C38/04C22C38/06C22C38/42C22C38/48
Inventor 汪德发张国芳张联合徐超张新年赵文定
Owner 安徽中建材开源新材料科技有限公司
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