1. Teknologi Dan Rekayasa
DEFORMATION.

2. TRANSVERSAL SHRINKAGE
Teknologi dan Rekayasa

3. LONGITUDINAL SHRINKAGE
Teknologi dan Rekayasa

4. BUTT JOINT AND FILLET JOIN
Teknologi dan Rekayasa

5. LONGITUDINAL DEFORMATION AND WAVE DEFORMATION
Teknologi dan Rekayasa

6. THERMAL ALIGMENT WITH LOCAL HEATING
Teknologi dan Rekayasa

7. THERMAL ALIGMENT WITH LINE HEATING
COLD WATER
Teknologi dan Rekayasa

8. THERMAL ALIGMENT AT LONGITUDINAL DEFORMATION
HEAT ZONE
Teknologi dan Rekayasa

9. Teknologi dan Rekayasa

10. Teknologi dan Rekayasa

11. Teknologi dan Rekayasa

12. Teknologi dan Rekayasa

13. Teknologi dan Rekayasa

14. Teknologi dan Rekayasa

15. Teknologi dan Rekayasa

16. PLATE JOINT
Teknologi dan Rekayasa

17. LINE HEATING
The line heating is the most popular method and a 90 % or more of the fairing work is carried out by this method. A knuckled deformation occurs on the steel plate by line heating. The process of this phenomenon is as follows :
Teknologi dan Rekayasa

18. KIND AND FEATURE OF HEATING METHODS
Basical distortion removing method and
to be used for heating from outside. 1
To make shrinking force to each direction, the evenly finished surface can obtained by the balanced fairing. 2
To be used for removing large distortion, Relatively balanced finish is obtained. 3
To be applied for a thin plate because of a large shrinking force 4
To be use for fairing or shaping for curved frame 5
Red heating method combined with external force to be applied for partially and radically concave and convex part 6
Teknologi dan Rekayasa

19. TRIANGLE HEATING Teknologi dan Rekayasa
This method can be applied if you understnd the line heating method, and is applied for the fairing and bending of angle bar and flat. The process of this heating method is shown bellow.
Teknologi dan Rekayasa

20. TRIANGLE HEATING (CONTINUE)
Namely in bending of steel bar, the plate is heated on a whole thickness in triagular shape, hollow side as the base of triangle and side is the vertex as on the above. When the length of vertical line of triangle exceeds about 2/3 of plate breadth, it has less effect in bending, also there is a possibility to be bent an opposite direction by internal stresses, you should pay attention.
2/3
Teknologi dan Rekayasa

21. WEB PLATE DISTORTION AND HEATING POSITIONS
Teknologi dan Rekayasa

22. FACE PLATE DISTORTION AND HEATING POSITION
Correction procedure
1. To carry out line heating on the convex side of the web from the bottom.
2. To heat upward continuously and then carry out triangle heating on the
face plate.
Remarks
1. The line heating on a web plate should be started from the less curved part.
2. The triangle heating should be done in half a width of the face plate so that
the heat can penetrate through the plate thickness.
3. The use of external force effect should be taken for a large curvature
Teknologi dan Rekayasa

23. METHOD USING STAYS
Teknologi dan Rekayasa

24. PLATE EDGE WAVE
PROFILE
Teknologi dan Rekayasa

25. DISTORTION LIKE WAVE
Teknologi dan Rekayasa

26. DISTORTION LIKE WAVE ( CONTINUES )
CORRECTION OF DISTORTION LIKE WAVE (PRINCIPLE) 1. To carry out the line heating from outside : a. Not to overheat. b. Not to heat the side convexed from the frame position. 2. To carry out the heating between the frame position. a. To start heating from convex part. b. To be persistent to correct broadly an object with a certain area ( not to correct an object at a spot ).
Teknologi dan Rekayasa

27. The End