PLASMA cleaning facilitates and allows better welds to be produced, thus increasing the quality of welds on metals.
With PLASMATREAT technology, plasma is generated by the high voltage electrical discharge of an electrode in a jet of compressed air inside a torch. Thus, the plasma is projected by a nozzle onto the surface of the part to be treated.
The treatment corresponds to a combination of chemical and physical effects, thus eliminating hydrocarbons, organic particles and modifying the structure by grafting reactive groups in order ultimately to produce metal welds of high quality and Under the best conditions of preparation.
Plasma treatment before welding minimizes the influence of surface contamination on the welding result. The method is particularly recommended for joints welding structural parts, or which are visible and which must be aesthetically flawless.
The quality of the plasma is controlled by a fiber optic device which analyzes in operation the light spectrum emitted by the plasma. When the signal reaches a limit threshold, information is given. This monitoring is independent of the plasma generation and ensures the parameters of the plasma process. Upstream of an automated welding project, any factors that may affect the good result of the weld are examined in order to reduce the potential scrap rate.
The atmospheric plasma treatment before the welding showed its positive influence on the quality of the weld bead: reduction of the formation of blows and porosities; Removal of any additional complementary surface preparation (obvious economies for large series); Cleaning carried out selectively on the contact zone (dry lubricants and other corrosion protection oils may remain on the non-welded parts of the parts);
Applications have been made with great success at laser and MIG welding points, on Al-Mg alloys and on steel combined with zinc.
With PLASMATREAT technology, plasma is generated by the high voltage electrical discharge of an electrode in a jet of compressed air inside a torch. Thus, the plasma is projected by a nozzle onto the surface of the part to be treated.
The treatment corresponds to a combination of chemical and physical effects, thus eliminating hydrocarbons, organic particles and modifying the structure by grafting reactive groups in order ultimately to produce metal welds of high quality and Under the best conditions of preparation.
Plasma treatment before welding minimizes the influence of surface contamination on the welding result. The method is particularly recommended for joints welding structural parts, or which are visible and which must be aesthetically flawless.
The quality of the plasma is controlled by a fiber optic device which analyzes in operation the light spectrum emitted by the plasma. When the signal reaches a limit threshold, information is given. This monitoring is independent of the plasma generation and ensures the parameters of the plasma process. Upstream of an automated welding project, any factors that may affect the good result of the weld are examined in order to reduce the potential scrap rate.
The atmospheric plasma treatment before the welding showed its positive influence on the quality of the weld bead: reduction of the formation of blows and porosities; Removal of any additional complementary surface preparation (obvious economies for large series); Cleaning carried out selectively on the contact zone (dry lubricants and other corrosion protection oils may remain on the non-welded parts of the parts);
Applications have been made with great success at laser and MIG welding points, on Al-Mg alloys and on steel combined with zinc.