What should be paid attention to when using hot water welding machine?
Safety operation
To prevent electric shock:
Before using the hot water welding machine, you must check whether the power cord of the equipment is damaged and whether the plug is intact. Ensure that the equipment is well grounded, which is a key measure to prevent electric shock accidents. If the equipment is poorly grounded, once leakage occurs, the operator will face the risk of electric shock.
When the operation requires contact with the electrical part of the welding machine, such as replacing a fuse or checking a circuit board, be sure to cut off the power supply first and wait for a while to allow energy storage components such as capacitors to fully discharge before operating.
To prevent burns:
During the operation of the hot water welding machine, the welding part will generate high temperature. Operators should wear protective gloves and protective clothing to avoid direct skin contact with high-temperature parts. For example, when welding on a hot plate, the temperature of the hot plate may be as high as hundreds of degrees, and it will cause serious burns if you accidentally touch it.
After welding is completed, the welded workpiece will maintain a high temperature for a period of time and needs to be placed in a safe place to prevent others from accidentally touching it and getting burned.
Prevent mechanical damage:
Some hot water welding machines may have mechanical moving parts, such as the opening and closing of the clamps, the movement of the workbench, etc. During the operation of the equipment, make sure your hands and other parts of your body are away from these moving parts to prevent them from being pinched or squeezed.
When installing or removing fixtures, molds and other equipment components, operate in accordance with the requirements of the operating manual to avoid injuries caused by sudden movement of mechanical parts due to improper operation.
Equipment operation specifications
Equipment preheating and inspection:
Perform preheating operations according to the equipment's instruction manual. The preheating time and temperature settings must be accurate, because different welding materials and processes have different requirements for preheating. For example, for some plastic welding machines, insufficient preheating may result in a weak weld, while excessive preheating may damage the welding material.
During the preheating process, carefully check all parts of the equipment, including the heating system, temperature control system, pressure system, etc. Check whether the heating element is working properly, whether the temperature sensor display is accurate, whether the pressure device can adjust the pressure normally, etc.
Parameter settings:
Correctly set the welding parameters according to the type, thickness and welding process requirements of the welding material. This includes welding temperature, welding time, pressure, etc. For example, welding different plastics, such as PE (polyethylene) and PP (polypropylene), requires different welding temperatures and times. If the parameters are set incorrectly, poor welding quality may occur, such as cold welding, insufficient welding strength and other problems.
After setting the parameters, check whether they are correct again and pay close attention to the changes in parameters during welding. If abnormal fluctuations in parameters are found, stop welding immediately and check whether the equipment is faulty.
Welding Operation:
When placing the welding workpiece, make sure that the workpiece is positioned accurately and fixed firmly. For some irregularly shaped workpieces, it may be necessary to use a special fixture to fix them. During the welding process, the movement of the workpiece will cause the welding position to shift, affecting the welding quality.
When operating a welding machine for welding, the prescribed operation sequence must be followed. For example, in the hot melt welding process, the welding head must first be in contact with the workpiece and reach the set temperature before applying a certain pressure for welding. After welding is completed, the welding head and pressure must be removed in the correct order to avoid welding defects.
