I encountered this question the other day in a training session… Student Our production facility does not use a temperature controller. Is it still important to document the coolant temperature? My Response In this case, it is even more important. If a temperature controller is present, then you can at least assume that the coolant temperature approximates the setpoint. If […]
Author Archives
Routsis Training
Molding of Magnesium…
I received this question during NPE… BD We have a customer who wants magnesium parts. What is the basic principle to metals injection molding? My Response Essentially, materials such as magnesium are effectively alloyed to create a thixotropic material. This alloy can be shear heated like a polymer to create a semi-solid slurry which can be injection molded. The […]
Polishing Actually Removes Metal…
I heard a die setter make this statement recently… Setter Mold makers get all bend out of shape whenever we touch the mold surface. It’s no big deal to polish out a scratch. My Response First off, polishing takes a long amount of time and is a very labor-intensive process. This person has obviously never […]
Mold Temperature and Weld Lines…
I was discussing a processing issue with a technician and encountered this question… Tech The cause of the poor weld line was mold temperature, but I don’t really understand why since the melt flows from the center and should be hot when the flow fronts meet. My Response This is a true, but the strength and appearance […]
The Importance of Timeliness…
A manager spoke with me the other day about training and asked this question… GM We recently had a processing problem which cost us a large amount of money. I want to address this is one of our weekly meetings, but am not sure if we should talk about it right away, or wait for the dust to settle. My Response Processing issues should be addressed in […]