Pictures 3.42 presenting the contours of the distribution of temperature on the wall a pipe 4 re-heater 4. It was clear as day that the temperature of the wall on the outside of 553C reached. The value is to be around a recrystallization temperature material pipe 4 ( 406C to 573C ).
In other words, at the time of foreign matter mashing a pipe 4, plastic deformation that occurs is at hot forming condition. The results of this is in accordance with chapter analysis sub-sub earlier. At the time of the outer wall of temperature reached the temperature 553C ( Picture 3.42 ) this is, foreign matter hit a pipe 4 is so as to produce plastic deformation large enough as are presented in a picture 3.43 .
Pictures 3.43. The distribution of plastic equivalent strains ( in mm / mm ) on a pipe, ( a ) just before foreign matter hit a pipe, ( b ) at the exact moment of foreign matter hit a pipe, ( c ) for a moment after foreign matter hit a pipe, ( d ) the form of damage to the pipe 4.
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