Kurtz Eisenguss casts water pipe valves
Kurtz Eisenguss casts water pipe valves for project in Qatar
Erhard GmbH & Co. KG from Heidenheim an der Brenz has been part of the TALIS network of affiliated companies since 2010 and is among the world’s leading manufacturers of plumbing fittings. The company produces a wide range of solutions for water circulation from DN 150 to DN 3600 – an increasingly interesting business partner for Kurtz Eisenguss. Since mid-2015, our SMART FOUNDRY has been supplying hand moulding sample parts in EN-GJS-500-7 quality. Since October we have been working together with ERHARD on a major project for the water supply in the Emirate of Qatar – where components, casings and valve disks of up to DN 2400, and with unit weights of up to 6,700 kg, have been in use. For the SMART FOUNDRY, the share in the overall project with a running time of approximately 12 months is around one million euro.
Innovative model technology in large-size format
A particular challenge in the casting process is presented by components for valves in the size classification DN 2400. Following the initial sampling in February, the SMART FOUNDRY delivered large components for the first phase of the project in May 2016. Series production for the second step in the project starts in autumn/winter 2016. In order to be able to produce cast parts on a process-capable basis, the SMART FOUNDRY technicians rely on innovative model technology: Specially produced welded constructions ensure optimum stability in the main cores – so that the use of classic “core irons” can be reduced to a minimum.
A symmetrical and gentle removal of the core from the mould is achieved by using a pneumatically driven thrust device. This prevents stripping of the moulding material and reduces manual finishing as well as improving the working conditions for our staff. The feedback from our customers regarding the surface and properties of the cast part: “Outstanding!”. One thing which applies for all parts: They have to meet the highest quality standards – including material certificates, ultrasound, hardness and crack tests as well as certification from a testing institute. Looking at the dimensions of the parts, it is probably clear that our experts for model planning and construction had to call on all their great wealth of expertise. We look forward to continued close cooperation with the ERHARD team!