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Exam 23: Arc Cutting, Gouging, and Related Cutting Processes

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Question 1

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Most laser welding and cutting operations use a solid state laser, and most drilling operations use a gas laser.

A) True
B) False

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Question 2

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____________________ cutting does not put any heat into the material being cut, and it is this lack of heat input that makes this process unique.

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High-powered solid lasers are most often used with a high-power continuous or low-powered pulse.

Laser light tends to remain in a very tight beam without spreading out.

____ gases do not add any heat to the laser beam cutting process; they simply remove the material by blowing it out of the kerf.

____ is the most common application of the air carbon arc cutting processes.

The highest continuous power output-type lasers are the gas type with a blower to circulate the gas through a heat exchanger; they can be rapidly pulsed to improve their cutting capacity.

In water jet cutting, ____________________ are added when hard materials such as metals are being cut.

The gas laser is capable of generating the highest-powered laser pulses.

____ is used to remove defective welds and to prepare a thick metal joint so that a full penetration weld can be made.

Early lasers all used a synthetic ruby rod as the material that produced the laser light.

____________________ is the process sometimes used to remove large areas of metal so that hard surfacing can be applied.

Through ____________________ cutting, it is possible to make very close parallel cuts without damaging the strip that is cut out.

Most lasers used for cutting, drilling, and welding produce a laser light beam in the ____ range.

____________________ is a synthetic crystal that when exposed to the intense light from the flash tubes can produce high quantities of laser energy.

A(n) ____ process uses a consumable alloy tube.

____ gases in the laser beam cutting process react with the material being cut like an oxyfuel cutting torch.

Some laser cutting equipment can make cuts that are within ± a hundred thousandths of an inch, which is as accurate as some rough machining operations.

High-powered solid lasers have a problem because the internal temperatures of the laser rod decrease with operation time.

____ uses a high-pressure jet of gas to blow the molten or vaporized material out the bottom of the cut.