Shell Moulding Materials
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Goodwin Refractory Services aims to establish and maintain long-term relationships with our Precision Casting customers, helping them meet the demands and challenges in a growing industry. We process and quality check, at our fully automated facilities in the United Kingdom, the highest quality materials in order to meet the most exacting and demanding challenges of the industry. Key products of the GRS include refractories for addition to the binder, refractory stuccos for the building process of the shell, and high-technology shell repair materials. Refractory ProductsMullite 55 is a high Alumina content refractory material for the back-up Slurry and Stucco. Zirconium Silicate High purity sands are used for the specialist manufacture of Precision Casting grade materials for primary Slurries and Stuccos. Fused Silica High purity Amorphous Silica is used to manufacture all grades suitable for both Slurry and Stucco applications.
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Repair Products
Rhoseal is designed for shell repair in Aerospace applications where high purity is a pre-requisite.
Silroc is for all commercial shell repair applications.
| SHELL REPAIR PRODUCTS | ||||
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| Repair Product | Iron Content | Lead Content | Bismuth Content | Uses |
| RHOSEAL | < 1500ppm | < 50ppm | < 1ppm | High purity Aerospace |
| SILROC | < 0 - 1.5% | 0.009% | N.A. | All forms of commercial casting |


