1. DOING WELDING, THERMAL CUTTING AND WARMING
DOING THERMAL CUTTING
BODY OTOMOTIF (F-022)
SK – KD 01

2. TARGET OF ACTIVITY LEARNING
Student can know procedure of thermal cutting
Student can know technique of thermal cutting
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3. Suited for cutting thick plate
Advantage
Quicker cutting
Suited for cutting thick plate
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4. Construction of Brender
Construction of Brender cutting differ between welding brender
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5. Cutting PROCEDURE Arranging pressure work acetylene
Arranging pressure work oxygen
opening a few faucet of Acetylene (± 1 / 8 rotation untill hear sound of acetylene
Flaming end of brender untill get fire which is not soot and not too big
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6. Cutting PROCEDURE Opening heater oxygen faucet little by little
Arrange opening of faucet of acetylene and oxygen and until obtained fire welding will be done.
Depress momentary crosscut lever to conduct oxygen, discharging crosscut lever and readjust heater to get neutral flame
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7. KINDS OF FLAME
Neutral Flame
Carburazing Flame
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8. Technique of Cutting
Heating the object edge, the crosscut lever in free condition
Distance of tip nozzle to object surface ± 10 mm, nozzle positioned vertical
If the colour of edge object was rose color, press crosscut lever
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9. Press the oksigen lever
Technique of Cutting
Warming Flame
Press the oksigen lever
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10. CUTTING THE THICK METAL
If thickness more than 50 mm, early by cutting at corner under from object
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11. Cutting the IRON DECANT
Adjust carburazing flame
Use big nozzle
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