How to Match Heat Treatment Production Needs
[ I. Basic Requirements for Daily Maintenance ] ()
*Keep the environment clean: * The equipment should be installed in a dry, ventilated, dust-free, and corrosive gas free workshop. If there is too much dust accumulation in the heat dissipation duct of the power cabinet, it will cause poor heat dissipation of the power devices and overheating damage. It is recommended to use compressed air to blow the dust inside the cabinet every month, and workshops with severe dust should shorten the cycle.
*Cooling water system maintenance: * Water cooling is the main cooling method for induction heating equipment, and water quality and pressure directly affect equipment safety. Softened water or deionized water must be used, and direct cooling with tap water is prohibited to prevent scaling and blockage of pipelines. Regularly check the water pressure gauge and flow gauge to ensure that the cooling water pressure and flow rate are within the normal range; Regularly clean the filter element of the water filter; Replace the circulating cooling water every six months to one year.
*Pre startup inspection: * Before each startup, confirm that the water circuit is unobstructed, the water pressure is normal, that all connection joints are not loose, and that the sensor is not deformed or short circuited. Pay attention to monitoring for any abnormal sounds during device operation and observe if the instrument readings are normal.
*Standardized operation: * Strictly follow the operating procedures to turn on and off the machine, prohibit frequent start and stop, and prohibit long-term high-power operation with no workpiece. When replacing sensors or workpieces, the machine must be stopped first to ensure safety.
[ II. Regular Inspection Items ] ()
*Monthly inspection: * Clean the dust inside the cabinet; Check for any signs of looseness or overheating in the wiring terminals; Check for leaks in the waterway joints; Check if the insulation of the sensor is intact.
*Quarterly inspection: * Check whether the contacts of the contactor and relay are corroded; Check the conductivity of the cooling water and replace it if it exceeds the standard; Check the insulation condition of transformers and reactors; Tighten the bolts of the main power circuit.
*Annual inspection: * Conduct comprehensive dust removal and cleaning of the entire machine; Detecting performance parameters of power devices; Check if the capacitor capacity has decayed; Verify whether the protection circuit action is reliable; Lubricate transmission components (such as quenching machine guide screws).
[ III. Common Malfunctions and Troubleshooting Methods ] ()
Fault 1: No response when starting up, the panel does not light up
Firstly, check if the external power supply is normal and if the air switch has tripped. If the external power supply is normal, check whether the fuse of the control power supply in the cabinet is blown and whether the switch power supply has output. This type of malfunction is often caused by external power fluctuations or internal control circuit short circuits.
Fault 2: No power output after startup
First, check if there are any protection signals triggered by water shortage, overheating, overcurrent, etc. After the equipment enters the protection state, the output will be blocked. If the protection light is on, the corresponding protection reason needs to be investigated; If there is no protection signal, check whether the power adjustment potentiometer, trigger circuit, and power device are damaged.
Fault 3: Frequent tripping of overcurrent protection
Overcurrent is one of the most common faults, with various reasons: the gap between the sensor and the workpiece is too small or short circuited; Match capacitor breakdown; Damage to power devices; Overloading, etc. When troubleshooting, first check whether the sensor is deformed or short circuited, and then gradually check the resonant capacitor and power module.
Fault 4: High water temperature or overheat protection
Prioritize checking for insufficient cooling water flow, low water pressure, and clogged water filters. If the waterway is normal, check if the temperature sensor is malfunctioning or if the surface of the heat dissipation device is scaling, causing an increase in thermal resistance. Long term overheating can seriously shorten the lifespan of devices and must be promptly addressed.
Fault 5: Insufficient output power, slow heating
After excluding factors such as changes in workpiece material and size, common reasons include: low grid voltage; Resonant capacitor capacity attenuation; The deformation of the sensor leads to a decrease in efficiency; Aging of power devices. It can be investigated one by one and resolved in a targeted manner.
[ IV. Safety Precautions ] ()
Induction heating equipment belongs to high-power electrical equipment, and maintenance and repair must be carried out by professional electricians, strictly implementing the power-off and hanging system. Even if the equipment is shut down, residual charges may still exist in the internal capacitors, and they must be discharged before maintenance. Special attention should be paid to personal safety when operating high-voltage equipment (such as electronic tube models).
Baoding Jinfan High Frequency Equipment Co., Ltd. provides comprehensive after-sales technical support for all factory products. Users can contact the company's technical service team at any time for professional guidance when encountering difficult faults. The company also provides regular maintenance, major repairs, and upgrades of equipment to ensure the long-term stable operation of user devices.
