Czech Die Casting Association

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On Thursday, March 31, the spring meeting of the Czech Foundry Company, Expert Commission for Die Casting, Section 06, focused mainly on die casting of aluminum alloys on cold chamber machines, zinc die casting and other methods in the field of die casting. casting belongs.

“Nadca 207 and its application in practice” was the topic of my lecture, prepared in collaboration with Galvamet. It was not a completely new topic for about 120 registered participants. In some companies, 100% initial impact tests are performed to evaluate the quality of the material, in others it performs periodic relaxation annealing to remove stress from thermal fatigue.

However, I must state that in the 22 years of my personal promotion of this specification, focused on the quality management system for the production of die-casting tools, I thought that both tool and die-casting plants had made more progress.

As I understand from the individual presentations, any savings, even in the form of ten pennies per piece, are welcome. But in order for this saving to occur, it takes effort and effort to change it, and above all to test it systematically. When I reflect on my knowledge of working in the aerospace industry, Nadca 207 is moving towards the frequency of testing that is quite common in aviation today. And is die casting a die other than an airplane? I do not think so. Because even Nadcap is not about aircraft, but about the ability to monitor and archive the entire production process so that whenever the aircraft crashes, we could find exactly who, when, what…

And the same goes for die casting dies. If the die has no service life, or the part cracks, or shows serious surface defects, we must be able to trace back the entire history of that particular insert and determine the reasons why this was the case. It’s actually easy…

So maybe in the next 22 years it will probably be better, if there is anything else at all…

When I remember my beginnings when I worked as the head of the tool shop in Plastimat, perhaps the largest tool shop in CZ for plastic molds (now Magna Exteriors), Jarda Fryč, a well-known Liberec bookseller, introduced a computer to monitor the viability of molds. The year was 1979-1980, and we had a mainframe computer Minsk 22, which consumed the data only in the form of punched labels…. So after each shift, new punched labels and computer feeding could begin… Still, it worked and it worked. Acquiring similar data in today’s age of digitization or Industry 4.0 is basically a breeze. But maybe that’s why the problem is…