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11:53 Feb 23, 2009
This question was closed without grading. Reason: Answer found elsewhere

Czech to English translations [PRO]
Tech/Engineering - Metallurgy / Casting / gas pipelines
Czech term or phrase: převalek
a type of defect in gas pipelines:

"časty vyskyt metalurgickych necelistvosti typu delaminaci a převalků"
Mark Cole
Local time: 05:56

Summary of answers provided
1 +1lap
Stuart Hoskins
Michal Zugec
Summary of reference entries provided
Alca Ryskova

Discussion entries: 2



2 hrs   confidence: Answerer confidence 2/5Answerer confidence 2/5

I am not sure - but the example looks like what we are looking for - "rolling contact fatigue".

Example sentence(s):
  • Squats, a type of rail rolling contact fatigue, lead to larger dynamic forces and shorter service lives of tracks and rolling stocks.
Michal Zugec
Local time: 06:56
Specializes in field
Native speaker of: Native in SlovakSlovak
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1 day7 hrs   confidence: Answerer confidence 1/5Answerer confidence 1/5 peer agreement (net): +1

looking for pipes combined with defectively rolled wire (poškozování zařízení vadně váleným drátem [převalky] at http://spisy.upv.cz/Patents/FullDocuments/91/91200.pdf) led me to descriptions of "folds", which would make sense, i.e. "pre"valek - "re/over"roll [thus creating a fold], which led me to:
Lap: A surface defect appearing as a seam caused by a fold of the material being rolled or drawn into the surface.

Note added at 1 day7 hrs (2009-02-24 19:38:53 GMT)

but this would be a defect on production, I suppose, and not the result of fatigue

    Reference: http://www.fiskalloy.com/shaped-wire/wf-glossary.pdf
Stuart Hoskins
Local time: 06:56
Native speaker of: Native in EnglishEnglish
PRO pts in category: 8
Notes to answerer
Asker: This sounds quite likely, as we are talking about manufacturing defects which are exacerbated as the pipe grows old. I have actually found the term "roll-out", so I think I will use that. Thank you for all your efforts

Peer comments on this answer (and responses from the answerer)
agree  Pavel Prudký: I think this one is correct, I could not recall this term
1 day14 hrs
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Reference comments

54 mins

Reference information:
laminace, vlysky, převalky
http://www.mero.cz/en/provoz/vnitrni-inspekce-ropovodu/: laminations, mill defects

Alca Ryskova
Czech Republic
Native speaker of: Native in CzechCzech
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