Hot rolled steel ball is a new type of rolling technology.
It is a process breakthrough of grinding steel ball manufacturing technology, and it has been gradually replacing the casted ball. The hot rolled steel ball has the following characteristics:
1) Hot rolled steel ball has all the advantages of steel, and been used as high quality grinding balls after heat treatment.
2) High efficiency, large capacity, mechanization of steel ball rolling production, high degree of automation, no need for manual production, and less and less interference of worker factors.
3) Stable quality, high hardness, good hardenability, compact microstructure, small crystal grain, homogeneous steel ball with no deformation, no breaking circle, good wear resistance, impact toughness is as high as 12-35 j/cm2, and the crushing rate is less than 1%.
4) Low energy consumption, no pollution, low labor intensity, low production cost, good formability, small geometric tolerance, and stable quality.
5) The wear rate is low and the service life is long. It is an existing cast iron ball, and the price is reasonable.
6) The steel ball hardness is up to 60 ~ 67 HRC, internal and external hardness is balanced.
7) Impact toughness up to 12~35j/cm3.
8) Large proportion (7.8~7.85 J / cm3).
9) The surface quality of the steel ball is good, and the hardness inside and outside is balanced (hardness difference <5HRC);
10) Low crushing rate, long service life, high ball density, strong impact toughness;
The wear-resistant steel ball rolling mill production line adopts fully automatic production line operations, without manual intervention, automatic production, and it can guarantee the stability of steel ball quality to the utmost. The production line is environmentally friendly and energy-efficient. The produced steel balls have precise and round geometry, high hardness and good mechanical properties, and have high impact toughness and strong crushing resistance.
Steel ball rolling is a new type of rolling technology. There are many advantages. Then what is the steel ball hot rolling process?
1. After the round bar has been inspected, it is cut to a fixed length for hot rolling according to the required length.
2. The steel bar is heated to a suitable temperature in a continuous furnace before rolling.
3. The red billet is fed into the skew rolling mill, and special spiral groove rollers are used to rotate the billet between the furnace and the skew rolling mill, and the billet is then continuously rolled into steel balls. Each steel ball skew rolling mill can roll 60-360 balls per minute.
4. The steel balls run into the factory specifically designed in-line quenching - tempering heat treatment, the heat treatment equipment enables the steel balls to get a high and uniform hardness, and then the steel balls immediately turn into hot red state.
5. The inspected qualified product is delivered to the finished product warehouse, and packaged for the customers.
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