For HVAC, refrigeration and radiator manufacturers, fin quality directly affects assembly efficiency and heat transfer performance. Before a fin die is designed, the supplier needs to understand the fin drawing, material, tube layout and production target.
Fin pitch and fin size
Fin pitch affects heat transfer area, airflow resistance and the spacing tolerance required during production. The fin die should be designed to maintain stable pitch under the planned stroke speed and material thickness.
Tube pattern and rows
Tube diameter, hole pattern and row count define the main punching layout. These parameters influence die station arrangement, feeding accuracy and the matching requirements for downstream tube expansion.
Collar height and hole forming
Collar height must support tube contact without cracking or deformation. Material thickness, forming sequence and lubrication all affect collar quality, especially for copper or stainless steel fins.
Louver, slit and special fin forms
For air conditioner and refrigeration fins, louver or slit structure may be required to improve heat transfer. The tooling design must balance forming precision, burr control and maintenance accessibility.
Press matching
The fin die should be matched with press tonnage, stroke speed, feeding direction and collection method. A technically suitable die still needs the right press line configuration to keep production stable.
Information to prepare
- Fin drawing or sample fin photos.
- Material type and thickness.
- Tube diameter, tube pattern, rows and fin pitch.
- Target production speed and existing press information.