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Safe use of spot welding

The spot welding machine adopts the principle of double-sided double-point over-current welding. When working, the two electrode presses the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and the welding current flows from one electrode through the other electrode When the two contact resistance point to form an instantaneous thermal welding, and the welding current instantly from the other electrode along the two parts flow to the electrode to form a loop, do not hurt the internal structure of the workpiece was welded.

Use the following:

1, the use of the scene, should be equipped with rain, moisture, sunscreen shed, and should install the appropriate fire equipment.

2, the welding site within 10m, shall not be stacked oil, wood, oxygen bottles, acetylene generator and other flammable, explosive materials.

3, welding operations and with the staff must be required to wear protective equipment. And must take to prevent electric shock, high-altitude fall, gas poisoning and other accidents of fire safety measures.

4, secondary tap joint copper plate should be pressed, the terminal should be gasket. Before closing, check the wiring nuts, bolts and other parts in detail and confirm the integrity, no loosening or damage. There are protective covers at the terminal.

5, before use, should check and confirm the initial, secondary line wiring is correct, the input voltage in line with the nameplate of the welding machine, know the spot welding machine welding current types and scope of application. When connected to the power supply, it is strictly forbidden to contact the live part of the primary circuit. Early, secondary wiring must be equipped with a protective cover.

6, mobile welding machine, you should cut off the power, not drag the cable to move the welding machine. When a sudden power failure in the welding, should immediately cut off the power.

7, welding copper, aluminum, zinc, tin, lead and other non-ferrous metals, must be in a well ventilated place, welding personnel should wear gas masks or breathing filter.

8, multiple welding machine centralized use, should be tap in the three-phase power supply network, so that three-phase load balance. Multi-welder grounding device, respectively, should be led by the ground pole, not in series.

9, is strictly prohibited in the operation of the pressure pipeline, with flammable and explosive materials on the container and the force on the components of welding.

10, welding preheat parts, should be set up baffle isolation preheat welds issued by the radiant heat.

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