ZVAC  LOGO
 INTRO TO ZVAC 
  • ZVAC is the name given to a simple, rugged, reliable and effective hyper super vacuum die-casting technique for preventing casting porosity.

  • ZVAC has strong functional performance, excellent reliability and easy maintenance, which bring substantial quality improvements to diecasting atributes.

  • The latest technique enables dies to use deep vacuum, by using large standard pipe mounted vacuum valves, powerful dry running pumps and extra-large receivers. The pumps having perfomance characteristics of being able to attain ultimate pressure less than 0.6kPa, and during production, a volumetric pumping rate capable of maintaining an average system pressure below than 2kP with high water vapour handling.

  • The method was developed to enable zinc alloy diecast parts to be powder coated and stove baked-cured at 200°C (392°F) for 20 minutes, without out-gassing, blisters or cissing; and that requirement was exceeded on its very first run, using a 30+ years old Bühler 400D hot chamber diecasting machine.

 ZVAC TIME-LINE 
  • Designed in November 1990 and commissioned early January 1991, ZVAC went global in 2001 and named 'ZVAC®'in 2004.

  • ZVAC now makes strong, beautiful, aluminium, zinc and magnesium die castings in many small and large foundries worldwide.

  • To learn more, click 'ZVAC Details', or send an email from the contact form:

  • To read basics and history of development to 2001, download a technical paper in English, Japanese or Chinese from https://independent.academia.edu
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