DMI PORTABLE PELLET WELDING MACHINE & ON SITE REPAIRS

DMI Portable Pellet Welding Machine

Sectional View of pellet weld repair in flake gray cast iron. Scale: 40:1

Conventional weld repair techniques in cast iron and tool steel base materials involve MIG, TIG or MMA welding. The finished quality of the weld is dependent on the base material composition and condition, the welding method and welding material used and the skill of the operator.
The DMI Portable Pellet Welding Machine provides a quick and easy method of repairing welding porosity, casting blow holes and other small surface defects.
Excellent weld quality is assured by minimising the heat input into the weld area. This is done by the careful control of the point at which switch on of the welding current occurs with respect to the main cycle and by limiting the weld duration. This ensures weld consistency, minimises the heat affected zone and improves weld penetration and strength. Although instantaneous weld power is increased, the overall power needed to produce a weld of excellent quality is substantially reduced. Weld times are consequently only about 1/10th of comparable methods and machines.
The DMI Portable Pellet Welding Machine is designed to resistance weld a pellet of compatible material into a range of base materials.
The unit is simple to operate, compact and portable. Its principal use is in the rapid repair of small base material or welding defects and damage on castings, press tools, moulding dies and other ferrous surfaces where such defects would otherwise result in the reworking or scrapping of the finished article.
DMI have supplied pellet welding machines to the automotive pressings, plastic moulding and casting industries in Europe, North America and Australia.

For further information, contact:
DMI (UK) or DMI Europe B.V.

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