Forging steel ball development history
1. Traditional process: the name suggests is made of forged steel balls, according to the conventional process requires the size of the feed, then the feed coal or natural gas is heated to a certain temperature, air hammer forging, heat treatment, product testing. Traditional crafts have too many drawbacks. The most important ones are low production efficiency, artificial control of product quality, large individual differences, serious environmental pollution, high labor intensity of workers, heat radiation and noise radiation, which seriously endanger workers' health.
2. Inclined process: With the development of the times, the traditional process gradually fades out of the historical stage. Instead, the diagonal tie process is used. The basic idea of ​​the diagonal tie process is to heat the whole round bar with an electric furnace and feed it into the roll through the conveying device. The motor and reducer drive the roll to rotate, and the roll can use its own ball groove design to skew the high temperature round steel into balls. The inclined tie process does not need to be unloaded, no air hammer forging, which greatly improves the production efficiency, the labor intensity of the workers is also greatly reduced, and the noise and the like are greatly reduced. The diagonal tie technology is a leap-forward development of the forged steel ball industry.
However, the diagonal slashing process has great defects, the most important ones are the surface quality and the roundness. The surface of the steel ball which is pulled out by the diagonal tying technology has defects such as skin, lack of meat, over-burning, protrusion, and high roundness. When the diameter of the steel ball is more than 50mm, the deviation of the steel ball will not meet the requirements of the relevant standards. For steel balls with a diameter greater than 90 mm, the diagonal tie technology cannot be produced.
3. Rotary-cutting and rolling technology: With the development of the world's mining machinery, the diameter of the ball mill is getting bigger and bigger, and with the advent of the semi- autogenous grinding machine , the demand for the ball mill ball is gradually updated from a small diameter to a large diameter. Obviously, the traditional process and the diagonaling technology can no longer meet the needs of the mine. Under this circumstance, Mr. Hou Yuxi, Chairman of Shandong Huamin Steel Ball Co., Ltd., led the technical staff of Huamin Company to study and research independently through foreign countries, through continuous exploration and experimentation, after several years of hard work, finally developed Successfully forged a steel ball rotary cutting automatic production line. Key technologies such as rotary cutting machine forging machines have won five national invention patents, and together with their new RCAB series of patented materials, the products produced have been recognized by international mining giants such as BHP Billiton, Rio Tinto and Vale.
Rotary cutting and forging automatic steel ball production line technology adopts new automatic feeding technology, medium frequency & high frequency induction furnace heating technology, rotary cutting machine forging technology, spiral isothermal machine technology, drum type spiral quenching machine technology, automatic thermal insulation barrel, etc. With advanced equipment, the production efficiency has increased nearly 20 times compared with the traditional process, and the labor intensity and working environment of the workers have been greatly improved. The use of advanced induction furnace heating, replacing coal and natural gas, energy saving, while not polluting the environment. The produced steel ball exceeds the relevant standard indicators regardless of surface quality or intrinsic quality. The roundness, hardness, impact value and drop value exceed the national standards. In particular, breaking a large diameter steel ball with a diameter of more than 100 mm can only rely on the conventional air hammer forging. It can be said that the history of forging steel balls has once again leapfrogged.
At present, Huamin can produce forged steel balls with a diameter between 20mm and 150mm.
4. Forging steel ball liquid extrusion molding technology. Huamin Steel Ball Co., Ltd. is developing and applying for patents, and detailed information cannot be provided. I believe that the Chinese people will bring another breakthrough innovation in grinding ball production technology.
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