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During the
resistance welding process the welding electrodes are exposed to
severe heat and pressure
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These factors (heat and
pressure) after 200 to 400 times of welding begin to deform the electrodes. |
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This will cause a decrease in
the electrical conductivity of the electrode tip and
therefore will decrease |
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the quality of the nuggets. |
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As the electrode deforms, the
weld controller is called upon to "step" up the welding
current in order to |
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generate an acceptable nugget.
Eventually, the line will have to be shut down in order to
replace the will |
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electrodes and after a short while the
operator have to hand dress the electrodes. Although this process |
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will improve the weld cycle, the
line is stopped and this will cause
unnecessary high consumption of |
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energy, electrodes and time. |
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Briefly the
disadvantages of using the old method are: |
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1- The lack of uniformity on the
electrode tip |
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2-
Unnecessary consumption of time |
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3-
Unnecessary consumption of energy |
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4- Usage
of improper components |
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And
the advantages of using tip dresser machines are: |
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1-
Dressing and aligning electrode to have the uniformity of the electrode
contact surface |
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2-
Speed in operation (
about a few seconds for dressing each tip ) |
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3-
Easy usage for dressing the tips |
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4-
Having a proper and desirable contact surface of the tips by changing
the tip dresser cutter blades |
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5-
Ability to dress both tips simultaneously in case the
dual head style dresser is used |
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We introduce Kyokutoh company as a one of the biggest Tip Dresser manufacturers in the world.
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