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Die Casting News

NADCA Video: Die Casting Process Troubleshooting (including plunger lubes)

Posted by Hill and Griffith Company on Feb 7, 2018 5:31:16 PM

NADCA Video News Update: "Sudden stoppage of casting, because you've got a stuck plunger, but it's a combination of events ... together mean you have a problem."


The material presented in this video are some highlights from NADCA’s online webinar - Basic Approach to Process Control. This webinar covers the traditional methods of controlling the process and what feedback you use to control it. It then expands on this and shows the usefulness of some simple math terms. It allows the company to see how stable their company is in from day-to-day. It then looks at the causes of variation from that stability and how to solve the three most common causes.

Transcript of the short video snippet which includes the application of plunger lubes, "Then we've got threshold conditions.

This is where everything sort of comes together. A number of things go wrong at once producing a catastrophic failure. For example, a plunger tip is at the top dimension. The water cooling flow rate is at the low setting, the lowest part your range.

As the shot sleeve temperature changes, you have a combination of the temperature of the shot sleeves, it might decrease for some reason, so it's shrinking a bit. The plunger tip is not getting cold enough, so it expands a bit and then you have a stuck plunger.

Sudden stoppage of casting, because you've got a stuck plunger, but it's a combination of events. Each one of them is close. They're all right, they're within their range, but too many things combined together mean you have a problem."

For information on purchasing a downloadable copy of this webinar in its entirety, please visit: diecasting.org/store/detail.aspx?id=WEB227. To purchase access to this course, visit the NADCA marketplace at www.diecasting.org/store. Purchasing a course through the online education system grants you one year of access to the recording, presentation, support material and test when applicable."

About the North American Die Casting Association

Headquartered in Arlington Heights, IL, the North American Die Casting Association (NADCA) represents the voice of the die casting industry, representing more than 3,100 individual and some 300 corporate members in the United States, Canada and Mexico. NADCA is committed to promoting industry awareness, domestic growth in the global marketplace and member exposure.

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