zagłębienie skokowe
English translation: step-like flaking
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| 13:46 Sep 22, 2020 |
| Polish to English translations [PRO] Tech/Engineering - Transport / Transportation / Shipping | |||||||
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|  Selected response from: Frank Szmulowicz, Ph. D. United States Local time: 11:56 | ||||||
Grading comment
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| Summary of answers provided | ||||
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| 2 | step-like flaking |
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| 1 | rail squats, squat defects |
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Answers
10 hrs confidence: 
rail squats, squat defects Explanation: ... na styku koła z krótką izolowaną deformacją powierzchni szyny o długości kilkudziesięciu milimetrów, która w dodatku ma często kształt zagłębienia skokowego (odłupania cienkiej warstwa stali). - http://spawalnictwoszyn.pl/wp-content/uploads/2014/08/h_bauc... - page 2 -- Rail squat Abstract. Generally, rail squats are defined by the growth of any cracks that have grown longitudinally through the rail subsurface and some of the cracks propagating to the bottom of rails transversely have branched from initial longitudinal cracks with a depression of rail surface |
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12 hrs confidence:
step-like flaking Explanation: zagłębienia skokowego (wykruszenie cienkiej warstwy stali) cccc wykruszenie powinno być shelling, ale shelling tutaj wygląda inaczej Appearance - Shelling shows the following: • Dark spots irregularly spaced on the gage side of the running surface. • Longitudinal separation at one or several levels in the upper gage corner, with discoloration from bleeding. • If rail was turned, shelling spots appear on the fi eld side, with an irregular overhanging lip of metal. The appearance is then similar to fl owed rail. cc Flaking Defi nition - Flaking is a progressive horizontal separation of the running surface of the rail near the gage corner, with scaling or chipping of small slivers. Flaking should not be confused with shelling, as flaking takes place only on the running surface near the gage corner and is not as deep as shelling. Origin - Flaking originates at the surface of the rail. It is prevalent on the high side of curves, switch points, and locations where concentrated loading on the tread and gage corner cold works the steel. Growth - Growth of these types of defects depends on loading. The separation progresses about 1/32 inch below the running surface towards the gage side of the head, usually coming to the surface close to the point where the tread contour turns downward at the gage side.. Hazard - Flaking is not a serious defect. It may develop into shelling or indicate a possibility of shelling on the same rail. Appearance - Flaking shows the following: • Horizontal separation with scaling or chipping of small segments of parent metal. • Very shallow depressions with irregular edges, occurring on the running surface near the upper gage corner. Generally will not occur more than 1/3 inch from the gage corner of the rail. • Horizontal hairline cracks along the running surface near the upper gage corner of the rail head, resembling small slivers. Detection - Flaking defects can be detected by visual inspection https://www.nordco.com/Media/Assets/General-Files/NordcoRail... |
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