(1) Before welding, the welding nails should be inspected to ensure that there is no rust, oxide scale, grease, moisture or other defects that affect the welding quality.
(2) The porcelain ring used for welding should be kept dry. If the porcelain ring is damp due to damage to the packaging, it should be dried before welding. The drying temperature is 120°C and the temperature is kept for two hours.
(3) There should be no harmful substances such as oxide scale, rust or moisture that affect the welding quality within 50mm of the welding place of the welding nail.
(4) When the length of the feeder wire is less than 50mm, its cross-section should not be less than 35mm2; at the same time, a special power supply with sufficient capacity must be used, and its capacity is generally 100KVA-150KVA, and it should be protected from rain and sun. The distribution box should be bolted Near the machine, it is convenient to cut off the power supply quickly in case of failure The minimum distance between the welder body and the wall or other obstacles is 20cm to ensure air circulation around the welder and facilitate heat dissipation.
