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Large-diameter wear-resistant steel ball and production process thereof

A production process and technology of wear-resistant steel, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of low production efficiency, poor toughness, high energy consumption of casting balls, etc., and achieve the effect of increasing product cost competitiveness

Active Publication Date: 2013-09-25
SHANDONG HUAMIN STEEL BALL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high energy consumption of casting balls, low production efficiency and poor toughness

Method used

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specific Embodiment approach

[0022] The specific implementation manner of this invention is as follows:

[0023] A large-diameter wear-resistant steel ball, comprising the following materials by weight percentage:

[0024] C: 0.6%-0.7%

[0025] Mo: 0.95%-1.25%

[0026] Ti: 0.01%-0.02%

[0027] Si: 0.25%-0.45%

[0028] S: not more than 0.03%

[0029] P: not more than 0.035%

[0030] Cu: not more than 0.2%

[0031] Impurities: not more than 0.003%

[0032] The rest is Fe.

[0033] A production process of large-diameter wear-resistant steel balls comprises the following steps:

[0034] 1) Cut the square steel or round steel made of the above-mentioned wear-resistant steel ball material into balls according to a certain length for later use, and then put them into a heating furnace to heat evenly, and the heating temperature is 900°C-1050°C;

[0035] 2) Put the balls into a roll forging machine, and forge them into steel balls in an environment with a temperature of 750°C-900°C;

[0036] 3) Put the ...

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Abstract

The invention discloses a large-diameter wear-resistant steel ball. The large-diameter wear-resistant steel ball comprises the following materials in percentage by weight: 0.6-07% of C, 0.95-1.25% of Mo, 0.01-0.02% of Ti, 0.25-0.45% of Si, not more than 0.03% of S, not more than 0.035% of P, not more than 0.2% of Cu, and the balance of Fe. The production of the large-diameter wear-resistant steel ball has the beneficial effects as follows: 1, according to the most advanced international qualification of large-diameter (120-200mm) forged balls, a material superior to domestic high-carbon alloy steel is developed by combining advantages of an existing domestic steelmaking technology and a precious metal mineral resource condition, and the cost can be lower than one fifth, so that the product cost competitiveness is increased after utilization; and 2, a novel, efficient and large-diameter wear-resistant forged steel ball with the leadership in domestic and overseas markets can be produced by combining an existing roll forging steel ball automatic production line with the technology provided by the invention, so that the domestic blank is filled up, and meets the requirements on installation and use of domestic and overseas large-scale ball mills.

Description

technical field [0001] The invention relates to the technical field of steel ball production, in particular to a large-diameter wear-resistant steel ball and a production process thereof. Background technique [0002] There are 26 million tons of wear-resistant steel balls for ball mills in the world, 80% of which are cast. Due to the high energy consumption of casting balls, low production efficiency and poor toughness. It cannot produce large-diameter steel balls with a diameter of 120mm to 200mm. At present, the diameter of modern natural mining ball mills has exceeded 6.8-13 meters. Research a special material and quenching and tempering process for the production of large-diameter forged steel balls, which can replace traditional casting and forging ball materials, process technology, and product indicators, and fill the domestic gap. Contents of the invention [0003] In order to overcome the above-mentioned technical shortcomings, the present invention provides a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C22C38/14C21D9/36B02C17/18
Inventor 侯宇岷
Owner SHANDONG HUAMIN STEEL BALL
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