The document provides instructions for the proper procedure of striking an arc when welding. It outlines 11 steps for the procedure, including wearing proper protective equipment, setting up the welding machine, grounding the metal plate, mounting the electrode holder at a 45 degree angle, using the scratching or tapping methods to strike the arc, building a short bead along the edge of the workpiece, chipping slag and brushing beads, and practicing until the arc can be struck freely in the desired location. It emphasizes maintaining safety and properly executing each step of the procedure.

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10. PROCEDURE OF STRIKINGAN ARC

12.  A brightly glowing
electric current that
flows across an open
space between two
points
RR A R C

13. A Flow of electric
charge to complete a
circuit
R N TC U R R E N T

14. A coated metal wire
having approximately
the same composition
as the base metal.
C TREL E C TR O D E

15. As the molten weld puddle
solidifies, it forms a joint or
connection between two
pieces of base material
B DB E A D

16. Procedure
of
Striking an Arc

17. Scratching method

18. TAPPING METHOD

19. Procedure
1. Were your PPE,
always observe
safety.

20. Procedure
2. Set-up the welding machine
3. Turn on welding machine
and Set power source for 70
to 120 amperes.

21. Procedure
4. Lay the plate in the flat position on
the welding table. Make sure it is well-
grounded.
5. Mount the electrode to the
electrode holder by 45 degree

22. Procedure
6. Strike the arc, using scratching method.
Move the electrode across the base metal at
an angle you would like to use to strike.

23. 7. When the arc starts, Strike the arc by
touching the plate, using tapping method.

24. Procedure
8. Built-up a short bead at the edge of
workpiece metal to the base metal
9. Chip the slag and brush the beads
and inspect if the bead properly
built-up

25. Procedure
10. Practice this job until you can
strike an arc freely, without
sticking, and where desired.
11. Turn-off the welding machine.

26. Demonstrate the Process
of striking an arc
ACTIVITY TIME

27. Scoring Rubrics
Weight
Completion and Work consideration of the
process of striking an arc
Execution and Mastery of process of
striking an arc
Interest and Behavior during the
properprocess of striking an arc
40% 40% 20%
5
OUTSTANDING: Completed the process of
striking an arcwork with high level of
performance / output as seen on the oral
demonstration
SKILLFUL: Demonstrates precise and
skillful execution and mastery of process of
striking an arc
SOPHISTICATED: Demonstrates full
interest and appropriate behavior
towards the proper process of striking
an arc
4
CREATIVE: Completed the process of striking
an arc work with enough level of performance /
output as seen on the oral demonstration
COMPETENT:Demonstrates competent
execution and mastery of process of striking
an arc
EXPRESSIVE Demonstrates a typical
level interest and appropriate behavior
towards the proper process of striking
an arc
3
ARTFUL: Performs the process of striking an
arcwork with satisfactory level but with
potential performance / output as seen on oral
demonstration
PRACTITIONER: Demonstrates general level
of execution and mastery of process of
striking an arc
REALISTIC: Demonstrates a general
level of interest and appropriate
behavior towards the process of striking
an arc
2
FAIR: Performs the process of striking an arc
work with limited level of performance / output
as seen on the oral demonstration
APPRENTICE: Demonstrates limited
execution and mastery of proper process of
striking an arc
IMPROVING:Demonstrates inconsistent
level of interest and acceptable behavior
process of striking an arc
1
ASSOCIATE: Performs the process of striking
an arc with low level performance / output as
seen on the oral demonstration
NOVICE: Demonstrates very low level of
execution and mastery of proper process of
striking an arc
UNEXPRESSIVE: Demonstrates little or
no interest and behaves inapproprirately
towards the proper process of striking
an arc

28. Analysis
A. Why is there a need to know
the proper process of striking an
arc?
B. How do you maintain the safety
prior to perform proper process of
striking an arc?

29. Generalization
Striking the arc is a basic action throughout
the entire welding operation. It will occur
each time the welding operation is started.
The most basic technique to all arc welding is
to start and maintain an arc so that current is
forced across the gap between the electrode
tip and the base metal.

30. Valuing
You should develop the skills
of starting and maintaining
an arc with a proper gap or
arc length.

31. Quiz
1 .
2

33. 3 . A brightly glowing electric current that flows
across an open space between two points.
4. A Flow of electric charge to complete a
circuit.
5. A coated metal wire having approximately
same composition as the base metal.

35. Suggestion/Recommendation:
Follow up: Research or YouTube
about usage of Stringer Bead.
Advance: Research or YouTube
about usage of Weaving Bead.
References: K-12 Module Grade 9 in
Shielded Metal Arc Welding NC I.
Page 49-50. By Dep Ed.

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