Rolling and cooling process of SCM435 alloy bar
SCM435 alloy rods are commonly used in the automotive industry due to their good welding, machining and heat treatment properties. The rolling and cooling process of SCM435 alloy rod must meet the strict requirements of rolling and cooling conditions such as specific rolling velocity, constant temperature rolling and slow cooling rate. In order to meet the needs of different industries and obtain high quality alloy steel rods, the rolling of SCM435 alloy rods needs to be strictly controlled.
In the production process, the temperature of SCM435 alloy rods needs to be strictly controlled, and the heating furnace can generally achieve a range of 1040~ 1060℃. It is necessary to strictly control the temperature between the rolls and the material in the control rolling process, so as to obtain higher precision steel bars and the best microstructure. In order to make SCM435 alloy rods have good plasticity and toughness, the temperature control of the steel bar during the control rolling process should be performed frequently.
The rolling of SCM435 alloy bar also needs to pay attention to the residence time of the material in the rolling machine. If the residence time is too long, the surface of the steel bar may be deformed due to excessive deformation, which will greatly reduce the quality of the steel bar. In order to obtain high precision steel bars, it is necessary to control the residence time of the material. Generally speaking, the residence time of steel bars in the rolling machine should be controlled within 0.5 minutes.
During the control cooling process of SCM435 alloy bar, it is necessary to slowly cool the steel bars in the furnace to below 500℃. The cooling speed should be gradually decreased, and the cooling speed should be controlled below 20℃ per hour. If the cooling speed is too fast, it will make the steel bar brittle and affect its toughness. The cooling of SCM435 alloy bars also needs to be divided according to its specifications and dimensions.
In conclusion, in order to obtain high quality alloy steel rods, it is necessary to control the temperature, residence time and cooling rate during the rolling and cooling process of SCM435 alloy bar. The temperature of the steel bar must be strictly controlled, and the residence time should not be too long. In addition, the cooling rate of the steel rod must meet the requirements during the control cooling process, and the cooling rate should be strictly controlled within 20℃ per hour. Only by meeting the requirements of the rolling and cooling process of SCM435 alloy rods can higher quality alloy steel rods be obtained.
