Inspection of Stamped Steel Parts for Cracks and Delamination

Ron Rompen

Trusted Information Resource
#1
I have been tasked with finding a method (or methods) for inspecting stamped steel parts for cracking and delaminations. I am aware of the eddy current method (already used by two of our sister plants in Europe) but I'm not sure if this is the most current technology available.

Broad parameters are: Inspection of formed and piereced steel components (seat adjuster rails) approximately 500mm long by 100 mm wide, formed in 3 dimensions. Throughput required is > 1200 pcs/hour.

My preference would be equipment manufactured in North America (for service and training support) but I will also consider international suppliers if there is sufficient inducement (either through accuracy, cost, or a combination of factors).

Any recommendations?
 
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silentrunning

#2
Our company uses dye penetrant inspection sampling. We don't inspect every part. The sampling level is determined by the complexity of the part and /or the customer's requirements.
 

SteelMaiden

Super Moderator
Super Moderator
#3
Dye penetrant was the first one to come to my mind also. Eddy current testing is not as effective on laminations as it is on cracks.
 
D

DrM2u

#4
Broad parameters are: Inspection of formed and piereced steel components (seat adjuster rails) approximately 500mm long by 100 mm wide, formed in 3 dimensions. Throughput required is > 1200 pcs/hour.
Are you looking strictly at detection methods or are you interested in prevention methods as well? Proper die design will prevent majority of these defects from happening in most cases, even with the uncontrollable variables in material structure.

I am not too familiar with detection methods for stampings but I used die penetrant and vibration analysis in forgings in the past. I am quite familiar with circle grid analysis and more advanced methods based strain analysis. One strain analysis system that I have used in the past is called Argus and is made by GOM in Germany. They have local presence for sales, training and support. Hope this helps.
 
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