RELINING IN THE EXTRUSION SERVICE CENTRE
The container is the heart of the extrusion press. Its performance and that of the liner depend to a large extent on careful maintenance and correct replacement of the liner. In the Extrusion Service Centre (ESC), all diagnostic results, work performed and dimensions of the container are documented. In this way, every container is provided with its own specific documentation – the S+C Pass – which documents the entire “life cycle” relating to quality, diagnostics, performance features, maintenance, liner replacement and repairs. This ensures maximum precision with long life spans, which contributes to greater efficiency. S+C stands for maximum performance and efficiency.
Complete S+C service for the relining
- Manufacture of a replacement liner made of Märker® hot work tool steel. This is best carried out before the relining process. Premanufactured liners can be stored at S+C ready for the arrival of the container. This significantly reduces the time for the relining process.
- Careful examination of the container for cracks or damage. Repair welding can be carried out if necessary.
- Measurement of the hardness of individual container components.
- Shrinking out of the old liner and, if necessary, the liner holder.
- Assessment and, if required, rough machined of the mantle/liner holder bore.
- Finished machining of the new liner to the interference fit dimensions.
- Shrink fitting.
- Documentation of the interference fit dimensions.
- Honing of the liner bore.
- Inspection and possible repair of the heating by arrangement.
- Order of a new replacement liner for carrying in stock.
