Impeder Rods for High Frequency Welding

Fiberglass+Ferrite+copper end

Return flow of cooling liquid ( round , square and rectangular sections )

Through flow impeders are the most common type of impeders and are a relatively simple concept, our designs ensure maximum high quality ferrite mass is placed within a well-constructed assembly. The result is improved performance, saving you money and increasing productivity.

mpeders must be always well proportioned and always together with inductors since together they create the electromagnetic inductive circuits that allow a good and efficient induction welding.

The high-frequency welding impeder is a critical component within welded tube production lines, typically installed inside the pipe near the weld seam. Its primary function is to guide and concentrate the high-frequency current along the strip edges, preventing current from dispersing through the center of the tube. This intensifies both the skin and proximity effects, ensuring fast and focused heating at the weld zone.

Impeders are generally constructed using high-permeability ferrite materials or iron-core assemblies, and can be configured in various shapes and sizes to suit specific production needs. A well-designed impeder improves energy efficiency, enhances weld consistency, and stabilizes the heating process—leading to stronger, cleaner welds and higher line speeds.

In addition to improving electrical efficiency, quality impeders offer excellent thermal resistance, mechanical strength, and magnetic performance, allowing them to withstand the demanding environment of continuous high-frequency operations. Proper selection based on parameters such as pipe diameter, operating frequency, and welding power is essential for achieving optimal welding results.

All of our impeders are designed to ensure effective cooling and protection of the ferrite core inside the construction. It is essential that ferrite is properly cooled  to maximise welding efficiency and maintain stable parameters for product quality.

Standard through flow impeders – Ferrite is totally enclosed inside the casing  

Exposed Ferrite impeders – around 10-15% of the end of the ferrite protrudes from the casing  

We have standard male imperial couplings but can offer metric or other threads on request.

Impeders are available in length options of 230mm, 330mm & 430mm.

Impeder Cooling: Tous nos impédants sont conçus pour assurer un refroidissement et une protection efficaces du noyau de ferrite à l'intérieur de l'impédant. Il est essentiel que la ferrite soit refroidie efficacement pour maximiser l'efficacité du soudage et maintenir des paramètres stables pour la qualité du produit. Le liquide de refroidissement doit être propre, de préférence filtré. Une pression assurera un refroidissement adéquat dans la plupart des conditions de fonctionnement. Les exigences de débit du liquide de refroidissement varient considérablement en fonction de la température d'entrée, de la puissance de soudage, de la fréquence et de la géométrie de la zone de soudage. Dans les situations de forte densité de puissance et à des températures ambiantes élevées, un petit refroidisseur pour le liquide de refroidissement de l'impédanceur et de la bobine de travail peut améliorer considérablement l'efficacité. Cooling by air or other gas is not recommended, but can be useful in special situations where the presence of water inside the tube cannot be tolerated. Gas, such as nitrogen, have a density that is at least 1,000 times less than that of water, so coolant volume must be increased accordingly.

1. Enter Section Equipments
2.  
3. 1. Coil car and Storage
4. 2.Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler
5. 3.Peeler and hold down roll arm
6. 4.Flattening Machine
7. 5.Automatic and Semi Auto Shearer & Butt Welder
8. 6.Vertical Cage Accumulator​ & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator
   

1.  
2. 1. Machine à courants de Foucault
3. 2. Machine de recuit des joints
   
4. 3. Machine à lisser
   
5. 4. Machine à chanfreiner et à surfacer les extrémités
   
6. 5. Machine de test hydraulique
   
7. 6. Machine à fileter
   
8. 7. Machine à peindre et à huiler
   
9. 8. Machine automatique de mise en paquets et d'emballages

1.  
2. 1. Rollers, Moulds, Dies, D2,D3 material to choose
3. 2. Ferrite, Impédance, Tube en fibre de verre
   
4. 3. Lames de scie HSS, Lames de scie TCT, Lames de scie à friction
   
5. 4. Inserts pour éliminer les bavures OD, inserts pour éliminer les bavures ID
   
6. 5. Bobine d'induction pour soudeuse HF et autres pièces de rechange pour soudeuse HF
   
7. 6. Tube en cuivre pour bobine d'induction, tube en PTFE pour bobine d'induction
   
8. 7. Mosfet, cartes
   
9. 8. Cercleuse pour tubes en acier
   
10. 9. Machine de pulvérisation de zinc, fil de zinc, pistolet de pulvérisation de zinc

1. Pourquoi nous choisir?
   

2. 1.Leading Technology, Reliable Quality, Excellent Service! Conception optimisée, sélection de matériaux de haute qualité !  Garantie du processus de traitement thermique !

3. 2.Spiral bevel gear, drum gear coupling and carburization. Trempe des dents d'engrenages. Système d'entraînement stable, efficace et portable avec moins de bruit.

4. 3.High precision wear resisting and Long life of toolings. Tous les tours mécaniques, les rainures de clavette sont positionnés et fraisés par CNC.

5. 4.Quality department make sure the material of the raw materials quality, and ensure the machine running perfect.

Service après-vente

1. 1.Machine test running videos will supply to customer before shipment.
2. 2.Online techenical support WHOLE LIFT FREE.
   
3. 3.Professional engineers team to install the machine,  train your employee well.
   
4. 4.One year warranty and life-long technical support.
   
5. 5,24 heures pour l'intervention de l'ingénieur.
   
6. 6. Votre relation commerciale avec nous sera confidentielle envers tout tiers.
7. 7.  We welcome customers to visit our factory anytime.