Koike Sanso Kogyo AUTO PICLE-S, Руководство пользователя

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AUTO PICLE-S
27
5.3 Cutting and piercing method
• Cut in from the end of steel plate.
• Pierce steel plate before cutting.
• Drill a hole before cutting.
Piercing method
1 Ignite and adjust the flame.
2 Thoroughly preheat the cut-in point until it is white hot.
3 Open the jet oxygen valve to pierce the steel plate. The tip should be
about 15 - 20 mm from the plate to prevent slag from splashing onto
the tip and adhering there, which will shorten the working life of the
tip.
5.4 Safety measures against backfire and flashback
5.4.1 Prevention of backfire
Warning
Backfires may cause serious accidents or fires. Be careful to prevent
such disaster.
When a backfire occurs, find the cause and inspect and maintain the
machine correctly before using the machine again.
The following are causes of backfire:
1 Improper gas pressure adjustment.
2 Overheated tip.
3 Slag clogged in tip.
4 Damage to the tapered section of the tip or torch.
5.4.2 Prevention of flashback
Warning
Flashback could cause fire and break the machine.
Should there be a hissing sound in the torch, quickly take the following
action:
1 Close the preheating oxygen valve.
2 Close the fuel gas valve.
3 Close the jet oxygen valve.
Auto Picle-S.book Page 27 Thursday, April 11, 2002 11:15 AM