1. Reducing / expanding press / swagers
Informations
Profile
The tube is held axially by at least two clamping jaws during forming. A guided drawing-in ring or expanding mandrel is pushed into/over the tube and in this way expands/reduces the workpiece. The closed design of the machine housing preferred by GFU ensures:
- Durability of the forming line
- Consistently high precision of the components
- Good accessibility of the tools
- Best concentricity properties due to external guidance of the tools
For necessary multiple operations, we offer an optional automatic tool changer.
Models
Get to know our models
Components
Here you can find a list of all the components you can produce with our machines.
Performance data
The pressing forces are calculated individually for each component and the respective press types are then selected. The system drives are based on servo-hydraulic, hydraulic or CNC drives. The handling of the components is tailored to the respective system concept in relation to the components and thus enables maximum flexibility.
Fields of application
GFU reducing or expanding machines are used for the production of:
- Airbag vessels
- Shock absorber tubes
- Power steering cylinder
- Chassis parts
- Steering columns
- Tube end calibration
- Tube pointing
- Furniture tubes
- Scaffold tubes
- Premium Casing OCTG
- OCTG Pipes Oil & Gas Industry
Advantages
of the retracting / expanding:
- Weight optimization: Drawing / expanding enables targeted wall thickness distribution in weight-critical components, such as in the passenger car sector. Drawing-in is often a significantly cheaper and faster alternative to swaging.
- Safety: Components produced by drawing in / expanding basically have a homogeneous fiber course. Due to this uninterrupted fiber flow, components can be subjected to higher loads with the same material input, in contrast to machined parts.
- Concept: We are happy to assist you with our know-how in the creation of new production concepts based on GFU necking and flaring technology. Our offer includes, starting with the sampling over the creation of a machine concept up to the delivery of complete production lines, all stations.
- Reduction of single components: Work pieces, which used to be made of multiple single components and then welded, can be forged to wrought products. Beside of the better material properties, forging / hammering generates also cost savings on storage of single components.
We are happy to assist you with the creation of new production concepts based on drawing-in and expanding technologies and our know-how. Our offer covers all stages, from sampling and the creation of a machine concept to the delivery of complete production lines.
