Imprex offers in-house Vacuum Pressure Impregnation services. With a variety of VPI systems at our production facilities, we offer quick turnaround with a dedicated system for rush orders. We offer high quality of service, testing, and documentation of impregnation. Our facility is ISO 9001:2008 certified for high quality and reliability.
Imprex Impregnation is the fastest, most effective process for eliminating the inherent problems of porosity in cast and powdered metal. Porosity can be caused by numerous factors in the design, tooling, or pouring of casting and forming of P/M parts. Impregnation prevents leakage of fluids and gases, prevents plating defects, increases machinability, reduces scrap, and increases profits. Impregnation does not alter the exterior dimensions and appearance of the part or component.
Imprex VPI systems eliminate porosity by internally sealing parts through various methods of application. The process varies slightly depending on the requirements of the parts or the sealant used. However, the basic steps include removing air from the pores, filling the pores with sealants, removing excess sealant from the exterior of the part, and curing the part.
In the Imprex Casting Impregnation Shop, each stage of the VPI process is monitored and documented. Quality and custom processes, such as basket size, part orientation, custom baskets, and dividers, are engineered prior to the product arriving at our loading dock. Once here, a travel tag with process specifications and requirements follows the product each step of the way – from the time it’s unloaded off the truck to shipment back to the customer. Customer requirements and specifications are noted and products can be traced back to identify the systems operator, process specifications, time in the shop, and leak testing documentation.
We test our resins weekly, compare batch numbers, and audit our equipment specifications. A complete history of a batch can be traced. We also keep training records of our employees, who are instructed to carry out and document procedures.