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Hydroforming

Hydroforming means forming an object with the aid of fluid subjected to high pressure. The process utilizes the fluid's capacity to always press perpendicular to the material. Hydroforming can be used to form both tubes and flat panels (sheets). In both cases a forming tool is used which comprises an upper and lower forming section. These forming sections are held together by a hydroforming press HF. The part is formed by the pressure of the fluid against the inner sides of the forming tool. When running tube hydroforming, axial cylinders are added for sealing and inserting material. This method provides following unique benefits compared to conventional technology:

Higher precision of the part
Complex parts produced in one single tool
Increased possibilities for product design
Low weight due to reduced volume of material
Higher structural strength of the part
Less material thin-out
Fewer operations

Press Hardening

The press hardening process makes it possible to produce sheet metal parts up to three times stronger than standard steel - and all in the same press operation. Hot blanks are formed and cooled rapidly in the press tool. The process sets tough demands for all equipment in the process to work together optimally.

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Embossing

Embossing is often used when producing details that need to be reinforced, or contact surfaces that need calibration. AP&T has a great deal of experience in embossing, especially when large surfaces (e.g. heat exchange plates) are concerned. Large surfaces require great forces, and this requires a lot from both presses and tools.

Punching

Punching is a common operation in sheet metal forming.
The operation can take place:

in a separate punching tool
in a punching unit beside the press
integrated in the forming tool

Folding

When using the folding method the blank is not subjected to the same effect as when using bending. This forming method is therefore suitable when using pre-painted materials or when the use of lubricants must be avoided. Another advantage of this method is when different materials are to be used for one detail. The folding method is easily adjustable depending on the properties of the different materials.

Bending

Bending is a very common metal forming method. The blank is bent in some form of tool set. There are several different bending methods, for instance V-bending and U-bending. The form of the finished detail and the number of details to be produced decides what method is more suitable.