File:Pipe_root_weld_with_HAZ.jpg
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Summary
DescriptionPipe root weld with HAZ.jpg | Partial weld around a pipe joint with clear heat affected zone. This is ASME SA106 Grade B steel pipe NPS 2.5 SCH 80 with J-grooved prepared ends. An automated TIG orbital welder made half an orbit before aborting. The heat affected zone is clearly visible because of the polished ends, even though it is generally innocuous in this material. (SA106 Grade B) Photo by Yannick Trottier, 2006. |
Date | 2 February 2006 (original upload date) |
Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
Author | No machine-readable author provided. Ytrottier assumed (based on copyright claims). |
Temper Colors
A method of checking temperature is by the temper colors: A given temperature will leave a distinct color corresponding to that temperature on a freshly filed surface. (It should be noted that the presence of alloying elements in the steel affects the colors formed, and some of the higher alloy steels have no temper colors.) This temperature range is very evident in the picture above, at the outside edge of the temper color you can see the transition of all the colors and corresponding temperatures.
Temperature C And Color 204.4 Faint Straw 226 Straw 246.1 Deep Straw 282 Bronze Peacock 590 Full Blue 640 Light Blue
Licensing
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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Items portrayed in this file
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2 February 2006
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:14, 4 March 2008 | 1,380 × 2,304 (363 KB) | XcepticZP | Crop the wall on the sides that isn't necessary. Lightened up the dark ares, but kept colors exactly the same. Reduced jpg file size with no perceivable loss of quality. | |
01:48, 2 February 2006 | 3,072 × 2,304 (1.55 MB) | Ytrottier | partial weld around a pipe joint with clear heat affected zone. This is ASME SA106 Grade B steel pipe NPS 2.5 SCH 80 with J-grooved prepared ends. An automated TIG orbital welder made half an orbit before aborting. The heat affected zone is clearly visibl |
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