weld 20 mod 5-8-10 weld 24 midterm

41問 • 1年前

問題一覧

Never directly or indirectly view an electric arc without__.

Using a properly tinted lens

Medium-carbon steel contains__..

0.30 percent to 0.50 percent

A type of copper-alloyed steel that protects itself from damaging oxidation by creating a hard, tough layer of oxidation on its surface is called__.

weathering steel

A pneumatic tool that uses a number of blunt steel needles to remove surface oxidation is called a__.

Needle scaler

Torsion applied to a weld joint refers to a force_.

Twisting the metal in opposite directions

The five basic types of joints are butt, lap, corner, T-joint and __.

edge

Lap joints, T-joints or corner joints can be welded using_.

Fillet welds

U-grove welds are formed by preparing two matching J-grooves that require..

More preparation time but use less weld material than a V-groove weld

Which of the following materials is not a common joint backing material?

Cast iron

When a backing strip of the same material as the base metal is used, the root face should be ___.

A feather edge

Grinding wheels selected for use must be rated to or greater than the grinder's_..

Rotational speed

Before a pipe can be butt-welded to a fitting or other connection, its edge must be_..

Cut square and beveled

Beveling equipment made for pipe is sometimes called ___.

Pipe-end prep lathes

Which of the following processes produces the lease desirable result, and is therefore not a popular choice for general metal cutting?

Pipe-end prep lathes.

Which of the following processes produces the lease desirable result, and is therefore not a popular choice for general metal cutting?

Air-carbon arc citting

The best approach to gouging seams or cracks is__.

Air-carbon cutting

Welding current is transferred from the electrode holder and into the workpiece through the..

Wire core of the electrode

The harmful oxygen and hydrogen present in the atmosphere surrounding a molten SMAW weld is pushed away by the..

Intense heat of the arc

The purpose of the specifications written by the American Welding Society (AWS) is to set standards that all manufactures must follow when manufacturing_

Welding consumables

The number placed at the end of a complete AWS specification number indicates the _

Year the specification was last revised

The traceability requirements of filler metals vary according to .

The client requirements and job specification

All-positions electrodes that provide deep penetration belong to which electrode group?

F3 fast-freeze

Of all electrodes, the ones that collect moisture faster than any other type are the _

F4 low-hydrogen

The exposure time for low-hydrogen electrodes, per AWS standards, typically ranges from__.

1/2 hour to 4 hours

All filler metal must be stored in a dry storage area at a minimum temperature of —

40 degrees F (4.5 degrees C)

Electrodes designed for welding high- sulfur, phosphorus, and medium- to high- carbon steels belong to which electrode group?

F4 low hydrogen

Which tool is often fabricated on the job from small channel or angle iron?

Straightedge

Before welding a 45-degree joint check the angle of the joint with a__.

Combination square

The primary use of a Hi-Lo gauge is to check for __.

Pipe joint misalignment

Secure a chain hoist over a weldment to be raised with an approved sling wrapped around__.

A structural member

When using a stongback to hold two weldment parts that have been aligned and fitted up, the tack welds used to hold the stongback to the weldment parts should be places on only...

One side of the strongback

If a joint need to be forced into alignment, yokes and wedges, or bolts, can be used with __

Strongbacks

When working with pipe over 10" (DN250), OSHA requires__.

Four-legged jack stands

The arched crossbare aviable for cage clamps is designed to__

Allow welds to be made under the clamp

Which of the following devices man not be allowed on some applications or projects?

Chain clamps

The stress locked in a weldment when it returns to the ambient temperature, and equal to the strength of the base of metal, is called __.

Residual stress

The more weld metal placed into a joint, the greater forces of ーーー

Shrinkage

Socket-welded joints are generally found on __

Pipe sizes 5" (DN125) or smaller

A detailed listing of the rules and principles that apply to specific welded products is called a_.

Welding code

The written set of instructions for producing sound welds in a prescribed manner is called.The written set of instructions for producing sound welds in a prescribed manner is called __.

Welding Procedure Specifications (WPS)

Welding test coupons prepared for a job are tested according to the _.

Applicable code

weld 20 test 6-11-12

weld 20 test 6-11-12

weld 21 test 1,2,7

weld 21 test 1,2,7

weld 21 test 1,2,7 / wld 24 midterm

ユーザ名非公開 · 57問 · 11ヶ月前

weld 21 test 1,2,7 / wld 24 midterm

57問 • 11ヶ月前

ユーザ名非公開

問題一覧

Never directly or indirectly view an electric arc without__.

Using a properly tinted lens

Medium-carbon steel contains__..

0.30 percent to 0.50 percent

A type of copper-alloyed steel that protects itself from damaging oxidation by creating a hard, tough layer of oxidation on its surface is called__.

weathering steel

A pneumatic tool that uses a number of blunt steel needles to remove surface oxidation is called a__.

Needle scaler

Torsion applied to a weld joint refers to a force_.

Twisting the metal in opposite directions

The five basic types of joints are butt, lap, corner, T-joint and __.

edge

Lap joints, T-joints or corner joints can be welded using_.

Fillet welds

U-grove welds are formed by preparing two matching J-grooves that require..

More preparation time but use less weld material than a V-groove weld

Which of the following materials is not a common joint backing material?

Cast iron

When a backing strip of the same material as the base metal is used, the root face should be ___.

A feather edge

Grinding wheels selected for use must be rated to or greater than the grinder's_..

Rotational speed

Before a pipe can be butt-welded to a fitting or other connection, its edge must be_..

Cut square and beveled

Beveling equipment made for pipe is sometimes called ___.

Pipe-end prep lathes

Which of the following processes produces the lease desirable result, and is therefore not a popular choice for general metal cutting?

Pipe-end prep lathes.

Which of the following processes produces the lease desirable result, and is therefore not a popular choice for general metal cutting?

Air-carbon arc citting

The best approach to gouging seams or cracks is__.

Air-carbon cutting

Welding current is transferred from the electrode holder and into the workpiece through the..

Wire core of the electrode

The harmful oxygen and hydrogen present in the atmosphere surrounding a molten SMAW weld is pushed away by the..

Intense heat of the arc

The purpose of the specifications written by the American Welding Society (AWS) is to set standards that all manufactures must follow when manufacturing_

Welding consumables

The number placed at the end of a complete AWS specification number indicates the _

Year the specification was last revised

The traceability requirements of filler metals vary according to .

The client requirements and job specification

All-positions electrodes that provide deep penetration belong to which electrode group?

F3 fast-freeze

Of all electrodes, the ones that collect moisture faster than any other type are the _

F4 low-hydrogen

The exposure time for low-hydrogen electrodes, per AWS standards, typically ranges from__.

1/2 hour to 4 hours

All filler metal must be stored in a dry storage area at a minimum temperature of —

40 degrees F (4.5 degrees C)

Electrodes designed for welding high- sulfur, phosphorus, and medium- to high- carbon steels belong to which electrode group?

F4 low hydrogen

Which tool is often fabricated on the job from small channel or angle iron?

Straightedge

Before welding a 45-degree joint check the angle of the joint with a__.

Combination square

The primary use of a Hi-Lo gauge is to check for __.

Pipe joint misalignment

Secure a chain hoist over a weldment to be raised with an approved sling wrapped around__.

A structural member

When using a stongback to hold two weldment parts that have been aligned and fitted up, the tack welds used to hold the stongback to the weldment parts should be places on only...

One side of the strongback

If a joint need to be forced into alignment, yokes and wedges, or bolts, can be used with __

Strongbacks

When working with pipe over 10" (DN250), OSHA requires__.

Four-legged jack stands

The arched crossbare aviable for cage clamps is designed to__

Allow welds to be made under the clamp

Which of the following devices man not be allowed on some applications or projects?

Chain clamps

The stress locked in a weldment when it returns to the ambient temperature, and equal to the strength of the base of metal, is called __.

Residual stress

The more weld metal placed into a joint, the greater forces of ーーー

Shrinkage

Socket-welded joints are generally found on __

Pipe sizes 5" (DN125) or smaller

A detailed listing of the rules and principles that apply to specific welded products is called a_.

Welding code

The written set of instructions for producing sound welds in a prescribed manner is called.The written set of instructions for producing sound welds in a prescribed manner is called __.

Welding Procedure Specifications (WPS)

Welding test coupons prepared for a job are tested according to the _.

Applicable code