Manufacturer of isostatically pressed crucibles and foundry supplies for melting non-ferrous metals.
MAMMUT-WETRO Schmelztiegelwerk GmbH
Wetro (Puschwitz), SaxonyNew on Amplifa
About MAMMUT-WETRO
MAMMUT-WETRO Schmelztiegelwerk GmbH, based in Wetro near Puschwitz (district of Bautzen, Saxony), produces refractory coarse-ceramic products used for melting, alloying, holding and transporting non-ferrous metals. The product range comprises isostatically pressed clay-graphite crucibles with a filling capacity of up to 1400 kg of aluminium for foundries in the automotive sector through to small cylindrical crucibles for alloy analysis of scrap metals. The range is complemented by SiCarbon – isostatically pressed silicon carbide crucibles for applications up to over 1600 °C, primarily in induction furnace systems – as well as foundry supplies such as pedestals, pyrometer protection tubes, pouring troughs, ladles, degassing bells and purging lances. The basis of the product properties is the switch to resin bonding, the isostatic pressing process and a special firing process. The integration of material development, production, quality assurance and application assessment is part of the ISO 9001:2015-certified management system. The company supplies foundries worldwide and operates under the motto “Quality from experience”.
- Site
- Puschwitz
- Processes
- Manufacture of crucibles (isostatically pressed) for melting, alloying, holding and, Manufacture of SiCarbon – isostatically pressed silicon carbide crucibles for applications up to, Manufacture of foundry supplies: pedestals, pyrometer protection tubes, pouring troughs, ladles,, Isostatic pressing process (manufacture of refractory coarse-ceramic products), Manufacture of isostatically pressed crucibles (clay-graphite) for non-ferrous metals, SiCarbon: isostatically pressed silicon carbide crucibles up to over 1600°C, Foundry supplies (pedestals, pyrometer protection tubes, pouring troughs, ladles, degassing bells,
- Materials
- Silicon carbide (SiCarbon), Clay-graphite (refractory ceramic for crucibles), Aluminium (melt charge, filling capacity specification), Clay-graphite (refractory ceramic), Isostatic pressing process
- Certificates
- ISO 9001:2015
- Founded
- 1875
- Industries
- Foundries, Automotive (non-ferrous metal / aluminium casting), Metal recycling (alloy analysis of scrap metals)
- 01
Material development (clay-graphite, silicon carbide)
- 02
Isostatic pressing
- 03
Special firing process
- 04
Quality assurance
- 05
Application assessment and sales
Materials & Processes
Clay-graphite (refractory ceramic)
Material of the isostatically pressed MAMMUT crucibles for melting, alloying, holding and transporting non-ferrous metals.
Silicon carbide (SiCarbon)
Isostatically pressed crucible grade for applications up to over 1600 °C, primarily in induction furnace systems.
Isostatic pressing process
Modern pressing processes combined with resin bonding and a special firing process form the basis of the product properties.
Locations
Wetro (Puschwitz)
DEProduction and administration site (crucible works)
- Part weight / size
- Crucibles up to 1400 kg aluminium filling capacity
- Materials
- Clay-graphite, silicon carbide
Products
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of crucibles (isostatically pressed) for melting, alloying, holding andCasting | – | – | Filling capacity up to 1400 kg aluminium | – | Silicon carbide, Clay-graphite |
| Manufacture of SiCarbon – isostatically pressed silicon carbide crucibles for applications up toCasting | – | – | – | – | Silicon carbide |
| Manufacture of foundry supplies: pedestals, pyrometer protection tubes, pouring troughs, ladles,Casting | – | – | – | – | – |
| Isostatic pressing process (manufacture of refractory coarse-ceramic products)Forming | – | – | – | – | Silicon carbide, Clay-graphite |
Additional services
Quality & Certification
Crucible manufacturing is certified to ISO 9001:2015 (LRQA, first accreditation 1996). The integration of material development, production, quality assurance and application assessment safeguards product quality.
| Evidence | Wetro (Puschwitz) |
|---|---|
| ISO 9001:2015 |
History
- 1875
The King of Saxony grants the first patent for the manufacture of crucibles – the company's foundation stone.
- 1898
Founding of the fireclay goods factory in Wetro.
- 1950er
Establishment of the Feuerfestwerke Wetro refractory works on the site of the historic brickworks.
- 1959–1963
Expansion of the fireclay works into one of the largest in the GDR.
- 1996
First certification to ISO 9001 by LRQA (29.01.1996).
- 2026
Current ISO 9001:2015 certificate issued (29.01.2026), valid until 28.01.2029.