1. Raw material preparation
Material selection: Use scrap steel or alloy materials as raw materials. These materials need to be strictly screened to ensure that they are free of impurities and have stable quality.
2. Melting and forming
Melting: The screened raw materials are sent to a high-temperature melting furnace for melting. During the smelting process, the furnace temperature and smelting time need to be strictly controlled to ensure the uniformity of the composition of the metal liquid and the degree of impurity-free.
Forming: After the metal liquid is smelted, it is formed into droplets through a specific transmission method (such as centrifugal atomization or high-pressure water/gas injection), and quickly cooled into spherical particles. In this step, the centrifugal atomization method is to atomize the metal liquid into fine droplets through centrifugal force, while the high-pressure water/gas injection method is to use high-pressure water or gas to spray the metal liquid into mist, and then quickly cool and solidify into spherical particles.
3. Heat treatment
Quenching: The formed steel shot is quenched to improve its hardness and wear resistance. The quenching temperature is usually in the high temperature zone, and the specific temperature depends on the material and performance requirements of the steel shot.
Tempering: The quenched steel shot needs to be tempered to eliminate the quenching stress and improve the toughness and plasticity. The tempering temperature is usually lower than the quenching temperature, and the specific temperature and time are adjusted according to the material and performance requirements of the steel shot.
IV. Post-processing
Drying: Dry the quenched and tempered steel shot to remove moisture and oil on its surface.
Screening and selection: Use vibration screening machines, fine screening machines and other equipment to screen and select steel shots, separate steel shots of different particle sizes, and remove unqualified products at the same time.
Round selection: The steel shot is further screened by the round selection machine to ensure that the shape of the steel shot meets the specified requirements. Unqualified steel shots will be returned for reprocessing.
V. Packaging and storage
Packaging: Pack the qualified steel shots after screening and selection. Common packaging methods include plastic bag packaging, iron barrel packaging, etc. When packaging, attention should be paid to moisture-proof and rust-proof measures.
Storage: When storing steel shot, it is necessary to avoid contact with other metal materials to prevent chemical reactions or oxidation corrosion. At the same time, the storage environment needs to be kept dry and ventilated.
Steel shot is widely used for descaling and rust removal treatment
How are steel shot and grit used to treat steel surfaces?
Steel shot is widely used for descaling and rust removal treatment
What are the unique characteristics of steel shot?
