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Grinding ball production method

A production method and grinding ball technology, which can be applied to furnace types, other manufacturing equipment/tools, furnaces, etc., can solve the problems of high production cost, affecting the production quality of grinding balls, and unfavorable large-scale promotion, and achieve the effect of low energy consumption.

Active Publication Date: 2006-10-25
SHANDONG HUAMIN STEEL BALL
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Problems solved by technology

[0009] The other is to use a rolling mill to produce grinding balls. The production process is that after the raw materials are heated, they enter the rolling mill and are deformed at high temperature. This process greatly improves the production of grinding balls, but in the production process, balls are prone to connection balls. The pedicle affects the production quality of the grinding ball. The ratio of waste balls in production is determined by the length of the raw material (because the two ends of a round steel are easy to form waste balls), but the heating of the round steel is too long and will be limited. It is not conducive to large-scale promotion, and its production cost is relatively high

Method used

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Embodiment Construction

[0022] Taking the production of φ20 steel balls as an example,

[0023] Blanking: The theoretical mass of φ20 steel ball is 0.0338kg. According to the calculation of 3% fire consumption, the blanking quality of φ20 steel ball is 0.0338kg, so φ14 round steel is used, and the blanking length is 28mm; square steel is used for blanking also may.

[0024] Heating forging: Put the raw material into the heating furnace and heat it to 1100-1150°C, start forging with an air hammer (controlled by the limit die), and forge it into an oval shape (such as figure 2 Shown), at this time the temperature is controlled at about 950 ~ 1120 ℃.

[0025] Ellipse graphics, where d≈h≈19.5-20.5.

[0026] Roll forging machine roll forging: such as figure 1 The left roll 1 and the right roll 2 are arranged in parallel on the roll forging machine, and the upper and lower baffles 3 and 4 are respectively arranged between the left roll 1 and the right roll 2; the workpiece 5 is located between the left...

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Abstract

A process of the grinding ball is disclosed in the invention. The square steel or the round steel is heated uniformly in the heating-furnace and forged into ellipse shape in the spacing mould by pneumatic hammer. Then the elliptical material is rolled to shape by the spiral roller and is treated in the hot water. The process is proper to producing grinding balls of all kinds of diameters.

Description

technical field [0001] The invention relates to a production method of grinding balls in a ball mill. Background technique [0002] Grinding ball is a kind of grinding medium, and it is the abrasive material with the most serious wear and consumption in the ball mill. It is widely used in metallurgy, building materials, electric power, cement, mining, machinery, chemical industry and other industries. [0003] According to relevant data, the iron mine system uses all kinds of high-quality grinding balls (low chromium cast iron, martensitic ductile iron, martensitic bainite ductile iron, 65Mn steel, 71Mn steel and medium-high carbon CrVTi steel) The average unit consumption is 1.8kg / t raw ore. Domestic iron ore production in 2004 was about 330 million tons, so it is estimated that the annual consumption of iron ore grinding balls is about 580,000 tons. [0004] The consumption of grinding balls for non-ferrous metal mines is 0.8-0.9kg / t ore. In 2001, the mining volume of 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B02C17/20B21H1/14B21H1/22B21H8/00B21J5/06C21D9/70C21D11/00
Inventor 侯宇岷
Owner SHANDONG HUAMIN STEEL BALL
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