Steel shell medium frequency furnace hydraulic tilting furnace
The steel shell intermediate frequency furnace needs to be poured into the molten steel at the end of scrap metal smelting. At this time, because the steel shell intermediate frequency furnace has a relatively large weight and the weight of the molten steel in the intermediate frequency furnace is added, the safety of the previous method that the reducer is poured into the furnace body to the molten steel , Reliability is more embarrassing and dangerous. Therefore, the intermediate frequency furnace uses a steel shell as the furnace body, and generally adopts the hydraulic tilting method.
1. Control of hydraulic tilting of steel shell intermediate frequency furnace:
The control of the hydraulic system of the steel shell intermediate frequency furnace adopts a series of valves such as overflow valve, throttle valve and explosion-proof valve to control the hydraulic system.
A. Throttle valve: Turn clockwise to increase the flow, and vice versa to decrease the flow.
B. Relief valve: Turn clockwise to increase the pressure, and vice versa to decrease the pressure. The overflow valve plays the role of pressure adjustment and safety in the system. The size of the system pressure should be determined according to regulations, and overload adjustment is not allowed. The electromagnetic overflow valve does not allow the load to start at the same time as the motor. Only when the motor is running normally, the solenoid valve of the electromagnetic overflow valve can be energized to work when the system is working.
C. Reversing valve: It plays a role in changing the direction of hydraulic oil in the hydraulic system. It is divided into manual reversing valve and electromagnetic reversing valve. When not working, the valve core is always in the middle position, the solenoid in the solenoid valve must be connected according to the system requirements, and it is not allowed to disassemble the solenoid valve and the valve body.
2. Oil supply for steel shell intermediate frequency furnace hydraulic tilting furnace:
Generally speaking, hydraulic oil is used for the hydraulic tilting of the steel shell intermediate frequency furnace. At this time, we should pay attention to:
A. The direction of rotation of the hydraulic oil pump is not allowed to be reversed. The start of the oil pump motor does not allow the load to start. The oil pump is strictly prohibited to run without oil. The motor should be started several times before running continuously.
B. The hydraulic oil must be clean and no sand and impurities are allowed. The hydraulic oil must be filtered and enter the oil tank.
3. The hydraulic cylinder of the steel shell intermediate frequency furnace hydraulic tilting furnace:
In the hydraulic system of the steel shell intermediate frequency furnace, the hydraulic cylinder plays the role of the actuator, and the piston rod of the hydraulic cylinder should be maintained.
4. Debugging of hydraulic tilting furnace of steel shell intermediate frequency furnace:
First of all, the hydraulic oil in the oil tank of the steel shell intermediate frequency furnace must be higher than the upper end of the level gauge. Before turning on the motor, the power switch should be activated 2 to 3 times to determine whether the direction of rotation is correct or not before continuous startup. The oil pump should run for 10 minutes without load, and gradually adjust the pressure:
A. Set the pressure to 1Mpa (1Kg/cm2) and turn the control valve to allow the actuator (hydraulic cylinder) to reciprocate several times. When the hydraulic cylinder enters normal operation (no creeping phenomenon), proceed to the next step.
B. The set pressure is the working pressure specified by the system. Turn the control valve and adjust the throttle valve to make the hydraulic system enter the normal state.
C. The hydraulic oil of the oil tank of the steel shell intermediate frequency furnace is at the upper end of the level gauge. If it is lower than the lower end of the tuck position, add hydraulic oil to the upper end of the level gauge in time.