VACUUM RESIN IMPREGNATION ON DIE CASTINGS-AN OVERVIEW

Castings are impregnated for a variety of reasons, the most common being to retain gases or fluids under pressure. Examples of these would be air regulators, gas meters, pumps, gear housings, valves, fuel systems parts, refrigerant compressor housings, cylinder heads and liners, automotive housings, brake parts, and aircraft housings. These parts can hold pressure up to the burst strength of the casting. Powder metal parts and plastic injection molded components are also impregnated for these reasons.

Powder metal parts and castings are also impregnated in preparation for other metal finishing operations, such as plating or painting. Acids and other cleaning agents that are used in these operations may be absorbed into the pores and remain there during the rest of the operation. Later, these fluids emerge from the pores, causing pits, blisters, or other blemishes on the surface. Out gassing of air from the porosity during paint curing can also cause blistering. Sealing the porosity prior to this can eliminate this problem.

VACUUM INPREGNATING CAN BE PERFORMED ON A VARIETY OF SUBSTRATES

Impregnation technology seals leaks on all ferrous and nonferrous metals, including die castings, sand castings, investment castings, pressure castings, powdered metal parts as well as forgings or weldments. Iron, bronze, aluminum, zinc, magnesium, steel, sintered metal, as well as alloys of these metals can be impregnated. Other non-metallic materials, such as wood, plastic, and ceramics can also be impregnated.

ACE ANODIZING AND IMPREGNATING CAPABILITIES

• All ferrous and non ferrous metals as described including zinc and aluminum die castings
• Two Large Capacity Processing Lines:
  • Wet Vacuum and Dry Pressure Impregnation/Thermal Curing Process
  • Anaerobic Curing Process
• Mil-I7563C
• Mil-STD-276A
• UV Inspection and coverage testing
• Certified to Worldwide Automotive Standards, commercial specifications and OEM approvals.