What you need to consider when choosing a leak test system
Ron Pawulski offers a checklist of what to consider when choosing a leak test system – your acceptable level of Gage R&R (repeatability and reproducibility), the required test cycle time for your line, and the need for traceability and root cause analysis.
How to conduct a leak test trial you can stake your job on
When you’re in the market for a new leak test system, it’s a purchase decision that could be worth hundreds of thousands, even millions, of dollars to your plant. Rob Plumridge discusses the best approach to ensure a wise choice … and your job security.
SPC can catch a problem, but only signature analysis can fix it fast
Joe Ventimiglio discusses how SPC (statistical process control) remains an effective means for manufacturers to spot production problems, but for effective quality management and to quickly trace root cause, you need more – digital process signature analysis.
Seeing the unseeable – winning the war against bubbles
Even the tiniest air bubbles can ruin the integrity of a seal or adhesive and vision systems alone can’t spot trapped air. Aaron Alberts talks about how Sciemetric teamed with Graco to create a new data-driven quality assurance system for dispense to capture what a camera can’t.
The difference between a pressure decay leak test and a mass flow leak test (and which one to use)
One of the most common questions about leak testing is understanding when to use pressure decay versus flow. We discuss how these two types of test differ and the instances where one is preferable to the other.
Dear John: How do I quickly find the most optimal limit settings to get the highest output?
Question: Dear John, I’m having a hard time finding the right limits for our test systems. Right now we keep adjusting them, trying to find what works best through trial and error. Is there a way to quickly find the optimal limit settings to get the highest output without affecti…
Dear John: What's the difference between pressure decay leak and flow-based leak test?
Question: Dear John, What’s the difference between a pressure decay leak test and a flow-based leak test? How do I know which one I should use? Answer: Leak testing is one of those things that is more complicated than it seems on the surface. The differences b…
Dear John: What can I do with my manufacturing production data?
Question: Dear John, Now that I’ve collected all this production and signature data, what can I do with it? Answer: That data is a goldmine, just waiting to be mined. Let’s start by looking at the pass/fail data, which can be translated into yields. Comparing …
Dear John: We make gas pedal assemblies. How do we assure our customers of quality?
Question: Dear John, We are a manufacturer of gas pedals assemblies. Given the recent press regarding potential problems and recalls related to gas pedals, we’ve noticed that our customers are looking for more assurances about the quality of our assemblies. Is there anything we can do on th…
Dear John: How do I catch a noisy actuator on the plant floor?
Question: Dear John, How do I catch a noisy actuator on the factory floor with all that background noise? Do I need to move the part to a “quiet room”? Answer: Well now, that’s a very good question. The problem with trying to pick up specific sounds, such as click…