Principal Layout of the STRECON® Stripwound Container

The STRECON stripwound container consists of three integrated tool elements but shall be regarded as one solid body. The inner ring of the container is the winding core on which the strip material is wound. The main section of the stripwound container is the coiled strip material. Outside the coiled strip an outer casing for tool handling, assembly, and fixture in the press is mounted.

In addition to the container itself, the pre-stressing tool also includes a wear ring that can be defined as a safety ring to the STRECON container.

The container is designed and manufactured in sizes that address the needs and requirements of the individual client and their applications. However, the ratio between the outer diameter of the cell (i.e. die bore) and the outer diameter of the container should be about 12 or higher. Furthermore, the ratio between the inner diameter and outer diameter of the container itself should be 3 or higher.

Materials applied

Winding core: High-alloyed tool steel material from Uddeholm hardened to 56 HRc. In very special container designs (i.e. small HPS systems) we use a winding core of tungsten carbide. Cobalt content to be determined during tool engineering.

Steel strip material: A very strong and exclusively developed steel strip material is used. The strip material is fully elastic up to 2000 MPa. Hardness equal to 64 HRc.

Outer casing: A standard and low hardened tool steel material is used (44 HRc).

Wear ring: This intermediate ring is considered an integrated but replaceable element of the STRECON stripwound container. The ring is made of high-alloyed tool steel materials from Uddeholm, mostly hardened to HRc 54.

The exact tool steel materials will be fixed during tool engineering and maintained on tool drawings.