Cost of X-Ray analysis

[BMKR]

we found slag in the basemetal(M50) of one of our forgings destructively, and we have already decided to test the bar stock for slag voids. we have another forging that we had made, and I was wondering if it was worth x-raying (looking for similar voids) as opposed to just sectioning it up. these are just prototype pieces and cost ~200usd

 

[metengr]

BMKR;
Depending on the size of your forging, I would consider ultrasonic testing (shear wave) versus RT. Shear wave UT is more suitable for finding voids/slag, and data is obtained real time. The cost of radiography (X-ray) in an industrial NDT lab can vary from $500 up to $2500 USD (depends on set-up).

 

[EdStainless]

Depends on how thick the forging is. If it is more than ~4" the X-ray will be more expensive and less sensitive.
UT is the best way to go on the bars, and maybe on the forging too unless it is a very complicated geometry.

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[arunmrao]

Radiography ,is a good technique for identifying defects. Other than the actual cost,you need to consider the cost of transporting them to the testing facility. Safety regulations,might not permit,the source to be brought to your place. (In contrast,the rules are quite lax in our country).

Ultrasonic testing will be cost effective and it could be done onsite.

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"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year

 

[BMKR]

Thanks all,

I was looking into X-ray to get better resolution on the locations of the inclusions, because we really don't know the severity of the slag/voids. The forging is thin-walled and has a complex geometry. Also, shipping isn't really an issue I could probably throw a stone and hit the place that does our testing. Looks like I'll be going down the fun(destructive) road and just sectioning it to bits. thanks again.

JC