{"id":2313,"date":"2017-11-06T10:18:15","date_gmt":"2017-11-06T10:18:15","guid":{"rendered":"https:\/\/www.ultraseal-impregnation.com\/gb\/?p=2313"},"modified":"2020-01-09T09:18:44","modified_gmt":"2020-01-09T09:18:44","slug":"vacuum-impregnation-video","status":"publish","type":"post","link":"https:\/\/www.ultraseal-impregnation.com\/gb\/2017\/11\/06\/vacuum-impregnation-video\/","title":{"rendered":"Understanding The Vacuum Impregnation Process"},"content":{"rendered":"

What is Vacuum Impregnation?<\/span><\/h2>\n

Vacuum impregnation<\/a><\/u> is a preferred, OEM approved method for sealing leak paths and porosity in metal castings, sintered metal parts and electrical components.\u00a0 Using specialist impregnation equipment<\/a><\/u>, voids are filled with a chemically and thermally resistant polymer sealant under vacuum. This process seals porosity and leak paths within the component, making them leak-free and suitable for production use, reducing scrap rates, improving productivity and quality.<\/p>\n

The Vacuum Impregnation Process Explained<\/span><\/h2>\n

1. Impregnation <\/span><\/h3>\n

The impregnation stage is the first part of the porosity sealing process. Air is evacuated from the porosity under dry vacuum and a liquid sealant is drawn into the porosity, filling any voids and leak paths.<\/p>\n

2. Drain<\/span><\/h3>\n

Once the sealant has filled the porosity the components are rotated to drain excess sealant.<\/p>\n

3. Cold Wash<\/span><\/h3>\n

After the excess sealant has been drained, the components are rotated under a wash water solution to remove any excess sealant from external component surfaces.<\/p>\n

4. Hot Cure<\/span><\/h3>\n

Finally, a hot cure cycle is used which polymerises the sealant, turning it from a liquid state to a solid polymer, sealing porosity and leak paths within the component.<\/p>\n