DELIVERABLE 2.8 - urban track
DELIVERABLE 2.8 - urban track
DELIVERABLE 2.8 - urban track
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D0208_STIB_M24.doc<br />
TIP5-CT-2006-031312 Page 9 of 44<br />
URBAN TRACK Issued: August 13, 2008<br />
Quality checked and approved by project co-ordinator André Van Leuven<br />
2.1.3. Ancillary conditions for build-up welding<br />
Rail with a tensile strength of up to 700 N/mm²<br />
no problems, material safe to work with.<br />
Rail with a tensile strength of up to 900 N/mm² (and above)<br />
Pre-heating is necessary for the first ignition of the arc (to 400°C), this temperature needs to be<br />
maintained throughout; this poses a difficulty due to the conditions prevailing on the construction<br />
site (weather, tram/car traffic, measuring equipment measuring surface only etc.) .<br />
Rail from special material (manganese steel):<br />
only to be welded with matched filler metals; the parts worked with have to be cooled (e.g. dry ice).<br />
Remark: Rail of lower quality is easier to « re-vamp » !
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