IMPCO ha s announced expanded ons i t e s e r v i c e s f o r permanently sealing and repairing large cas t ings and other parts. For any large leaking part or component, IMPCO provides the engineering, technical personnel and all necessary materials and equipment to the part’s site when the part’s size or location makes it impractical to t r a n s p o r t i t t o a n IMPCO Service Center. On a contract basis with virtually no limitations on size, weight or wall thickness, parts will be inspected, sealed and leak-tested. The result is a sealed part returned to productive use quickly and economically, with a minimum of downtime or other adverse impact, the company said. Dur ing the seal ing proc e s s , IMPCO uses a variety of materials. In the initial phase of the operation, IMPCO’s macro porosity sealing resin is often applied to the known leak areas. Subsequently, through various means, IMPCO’s porosity sealing materials are introduced into the porosity under pressure. The choice of impregnant is key, and IMPCO has a range of materials to cover nearly every application and circumstance, the company said.Many considerations such as cost, subsequent application, operating environment and temperature are assessed to determine the optimum impregnant and method to solve the problem. Applications include large heat exchangers, steam dryers, pump And compressor housings, molds and military applications. Parts can be ferrous or non-ferrous alloys, wood, plastic, concrete or many other porous materials. Finally, a leak test that simulates the operational requirements is performed. The successful results allow the client to immediately place the critical component back into operation. A casting sealed in the field will have the same functional characteristics as any other casting. Field-impregnated parts withstand an effective temperature range of -20 to over 1,000-degrees F (-30 to 540-degrees C.) and pressures from full vacuum to over 10,000 psi (0 to 690 bar). Further, after processing, the parts can be painted or finished as required. For more information contact: Terry Chwalk, Vice President IMPCO, Inc. 27 Dexter Road East Providence, RI 02914 401-521-2490 mail@impco-inc.com www.impco-inc.com