Operation steps and process of trolley annealing furnace

In this article, we will talk about the operating steps and process of the push rod trolley annealing furnace, with specific reference as follows:
1. Preparation for startup: Check if the equipment is in good condition and if there are any abnormalities (limit switches, hydraulic pipelines, gas pipelines, various operating machinery, etc.)
2. Power on: Turn on the working power and control power. At this point, the temperature control instrument and recorder are powered on and the control system begins to operate.
3. Observe whether the working status of each part of the equipment is normal:
a. Temperature instrument display; b. Monitoring interface working display (the monitoring interface can only be seen after running for a few minutes).
4. Check the operation and travel limits of each part of the mechanical equipment, check if the switch is normal, and manually run the mechanical cycle once.
5. Manually place the operating mechanism of the equipment in its original position, that is, close the feed and discharge doors in place; The main thruster returns to its original position; Retract the puller into position and inspect the hopper; The rear transfer vehicle is located on the left side (without materials); The transfer car in front is on the right. (All position statuses can be viewed on the touch screen and there are system homepage information prompts)
6. Set process parameters: equipment beat time (set on the touch screen).
7. Turn on gas heating:
(1) Open the gas main valve;
(2) Manually open all furnace doors;
(3) Turn on the combustion fan;
(4) Turn on the circulating fans in each temperature zone in sequence, with a running time interval of approximately 5-10 seconds between each temperature zone;
(5) After the combustion fan is turned on for more than 3 minutes (the valves on the corresponding gas pipeline on the monitoring system simulation diagram change from dark to bright), all gas valves can be opened for ignition operation. Method: Turn on the ignition switches of the burners in each zone, and after a few seconds, the burners will automatically ignite. If ignition fails and an alarm is triggered, click the burner reset button to reignite and repeat the operation until ignition is successful (the interval between repeated operations needs to be greater than 20 seconds);
(6) Manually close the furnace doors at the inlet and outlet ends and start heating.
Heating to process temperature and holding for about 30 minutes can be put into production, which can be done manually or automatically. Manual operation refers to switching the "manual/automatic" switch on the control cabinet panel to manual operation, using the corresponding button switches on the front and rear operation boxes to operate all machinery, in order to complete the loading and unloading of the material cart and the operation inside the trolley annealing furnace (it is recommended not to use this method in normal production, and to use it in case of equipment adjustment or automatic transmission failure); Automatic operation refers to the automatic completion of loading, discharging, and operation in the furnace according to the set rhythm time, in addition to manual loading and unloading.
9. Start automatic method:
(1) Start automatic mode: Confirm again that the original position of the machine is correct, and switch the manual/automatic switch on the control cabinet panel to automatic mode;
(2) In automatic mode, the automatic indicator light will light up and start automatic operation.

10. The automatic operation process is as follows: the discharge door is opened in place → the puller is in place → the puller is pulled back in place → the discharge door is closed in place → (the rear transfer truck moves to the discharge position → wait) the feed door is opened in place → the main push truck is in place → the main push truck returns to its position → the feed door is closed in place (the front transfer truck moves to the loading position) and waits for the next cycle → it is time for the discharge bell to ring → the rear transfer truck moves to the discharge height.
11. Shutdown: It can be turned off at any time. The shutdown steps are as follows:
(1) Stop automatic operation: Press the emergency stop button to switch the operation mode to manual;
(2) Turn off the ignition switch of each temperature zone burner in sequence and turn off heating;
(3) Close the manual valve of the gas main pipeline;
(4) When the temperature of the trolley annealing furnace drops below 150 ℃, turn off the circulating fan, controlled cooling fan, and combustion fan in each heating zone (after turning off the heating, the combustion fan can be turned off, but the cooling rate will slow down);
(5) Turn off the control power and cooling water.