Cheese head studs for arc stud welding

Application:

Belongs to a high-strength stiffness connection fasteners, mainly used in large-scale public buildings and ultra-high-rise housing construction more and more, the main body of which is mostly steel bone concrete structure, in order to make the steel components have a good combination of force between them, and work together, fasteners cylindrical head weld nails in this field to obtain a wide range of use, through a lot of experiments and engineering applications. Industrial plant buildings, highways, railways, bridges, pylons, automobiles, energy, transport facilities buildings, airports, stations, power stations, pipeline supports, lifting machinery and other types of steel structure and other projects.

Specifications:

Nominal diameter: 10 ~ 25mm(10,13,16,19,22,25mm), total length before welding: 40 ~ 300mm

Pre-weld inspection

(1) Before welding, the welding nails should be inspected and ensured to be free of corrosion, oxidised skin, grease, moisture or other defects that have an impact on the welding quality.

(2) Porcelain rings for welding should be kept dry. If the rings are damp due to package damage, they should be dried before welding at 120℃ and held for two hours.

(3) There should be no oxidised skin, rust or moisture and other harmful substances affecting the welding quality within 50mm of the welding place of the welding nail.

(4) Feeder wire length of less than 50mm, its cross-section should not be less than 35mm2; at the same time, must use a sufficient capacity of the dedicated power supply, its capacity is generally 100KVA-150KVA, and should be protected from rain and sun, the distribution box should be near the peg welder, to facilitate the emergence of faults when the power supply is quickly cut off. Welding machine body from the wall or other obstacles to the minimum distance of 20cm, to ensure air circulation around the welding machine, conducive to heat dissipation.

Before welding, welding nails, porcelain rings and base materials with the same specifications and the same batch number and specifications (base material thickness should not be less than 16mm and not greater than 30mm) should be selected with the same welding method and position to evaluate the process parameters, so as to determine the best matching relationship between welding current and welding time under the same conditions.