Ball iron is a common material for various metal products. It is one of the most widely used materials in industry, and has a wide range of applications in various fields, such as automobile manufacturing, shipbuilding and aircraft. In the auto industry, iron ball is widely used for product processing and manufacture. The application of iron ball can greatly improve the production efficiency of automobile factories, while reducing the cost and time of traditional processing methods.
The metal ball is cast by molten iron, and then it is tempered by heat. According to the characteristics of steel ball and different objects, the cooling process is different, which also determines its metallurgical properties. In the production process, the cooling speed of the steel ball is mostly determined by two factors, intensity of air flow and air flow field. The faster the cooling speed of the steel ball, the fewer the number of pearl of light particles in the steel ball.
Under the same cooling conditions, the pearl light particles in the steel ball are heavily affected by the cooling speed. The slower the cooling speed, the more pearl light particles in the steel ball; the faster the cooling speed, the fewer pearl light particles in the steel ball. This is because, when the cooling speed from high or normal to low, it can effectively slow down the cooling rate in the steel ball, so as to make the crystal nucleus in the steel ball have more time to grow and results in a finer grain structure and higher toughness.
However, if the cooling speed exceeds the normal speed, the cooling process will be accelerated, and the probability of polycrystal grains forming in the ball is increased, resulting in a decrease in pearl light particles. It is also due to this phenomenon that low-grade cast car pieces may appear uneven after cooling, and it is difficult to effectively separate the steel ball during demolding.
Inferior cast pieces can cause much loss to the auto parts manufacturing industry. Therefore, when the cooling speed of steel ball is used in the production process, it is necessary to pay attention to it and strictly control the cooling speed of steel ball, so as to ensure the normal use of steel ball and reduce the occurrence of unfavorable conditions.
The cooling speed of the steel ball is an important factor that determines the number of pearl light particles in the steel ball, which has a great impact on the properties of the steel ball. Therefore, it is necessary to properly adjust the cooling speed during the production process in order to ensure the normal use of the steel ball and obtain good metallurgical properties.
