CSWIP 3.1 Part 4

Chromium

Manganese

Carbon

Nickel

Because of the additional cost incurred

The wire would have been too thick

Weld metals composition would be incorrect

The welder would not be qualified

To increase fatigue life

To increase the chances of fatigue cracking

To improve visual appearance

To reduce the components weight

44%

144%

69.4%

2.27%

The elongation is not normally tested in this test

1.2KJ/mm

12KJ/mm

1.2 Joules /mm

6.5 KJ/mm

Control the rate of spatter in the dip transfer mode

It enable the welder to weld in position with the spray transfer mode

It allows for thicker filler wires to be used(2.6-3.6mm diameter)

It allow full control over droplet size in the spray transfer mode

Ensure good penetration

To prevent the arc striking on the parent material

To help prevent the formation of crater pipe and possible cracking

To help prevent tungstan inclusion during welding

MMA

SAW

TIG

FCAW

Fit-up and root pass welding

Post weld cleaning

Fillers and capping pass welding

Radiography

DC-ve

DC+ve

AC

All of the above

0.7 KJ/mm

0.6KJ/mm

0.01KJ/mm

0.7KJ/mm

The cutting of a weld preparation

The removal of defective weld

For the cutting of non-ferrous materials only

For the cutting of ferrous materials only

The welding process is stated as MMA

The welding process is stated as TIG

The welding process is stated as SAW

NDT is to e carried out after welding

None of the above

100% argon

100% CO2

75% argon +25% CO2

All of the above would give the same depth in penetration

Martensitic stainless steel

Ferritic/austenitic stainless steel

316L stainless steel

All of the above

Reducing the grain size

Increasing the heat input

Reducing the heat input

Both a and b

Increasing the cutting speed

The use propane as a fuel gas

Pre heating the material to be cut

All of the above

Solidification problems

Hydrogen entrapment

Poor welder skill

Both a and b

Convex

Mitre

Concave

Both a and b

The EN/ISO weld symbol will always have the arrow side weld at the top of the reference line

The EN/ISO weld symbol has the welds elementary symbol placed on a dached line lying above or below the solid reference line to indicate a weld on the other side

The EN/ISO weld symbol has a fillet weld leg length identified by the letter "a"

The EN/ISO weld symbol has a fillet weld throat thickness identified by the letter "z"

Both b and d

The colour of the flux covering

The electrodes classification code on box

The electrodes classification code on stamped on to the electrode

The electrode trade/manufacturers name

All of the above

Low toughness,entrapped hydrogen and low hardness

High hardness,lack of fusion and entrapped hydrogen

Entrapped hydrogen ,low toughness and high ductility

Lack of fusion ,low toughness and reduction in ductility

DC-ve

DC+ve

AC

Both a and b

Travel speed

Voltage

Current

Arc length

Decreases weld pool fluidity

Requires more heat to melt it when compared to aluminium

Causes the welder to travel to quickly

The presence of the oxide makes aluminium impossible to weld

The welder is responsible for the maintaining the arc gap and travel speed

The welder is responsible for travel speed only;arc gap is kept constant by the welding plant

Both travel speed and arc gap is controlled by the welding plant

All of above

A change from an electrode classified to BS EN 499 as an E46 3 INI B to an electrode classified to AWS A5.1 as an E7018

A change of pipe wall thickness by at least 15 mm

A change in pre-heat temperature from 50°C to 100°C

A change from PC welding position to PA welding position

All of the above

To keep the arc stable when using low current settings

To convert AC current to DC current

To convert DC current to AC current

To initiate arc at start up

Rough randomly torn and a reduction in area

Smooth fracture surface displaying beach marks

Step like appearance

Bright crystalline fracture with very little reduction in area

Both a and b

Check- WFS,current ,volts and wire diameter

Check- WFS,joint set-up ,gas flow rate and WFS

Check- gas flow rate,stick out length,WFS and current

All of the above

Copper inclusion and excessive cap heights

Excessive root penetration and porosity

Slag inclusion and crater pipe

Lack of fusion and poor cap profiles

A convex fillet weld throat thickness 8mm

A mitre fillet weld throat thickness 8mm

A concave fillet weld throat thickness 6mm

Both a and b (throat thicknesses dimension the same)

Dip transfer

Pulse transfer

Spray transfer

Globular transfer

It's destructive test used to assess material ductility in the weld zone

It's a mechanical test used to determine a welds resistance to creep

It's destructive test, which is used to give a measure of notch toughness

It's a static test used to determine material toughness in the notch region

Both a and c

The current will increase

The current will decrease

The voltage will decrease

The voltage will increase

A basic low hydrogen electrode containing iron powder

A rutile electrode containing iron powder

A cellulose electrode suitable for welding in all positions

A basic electrode depositing weld metal with yield strength af a least 70,000 psi

Both a and d

An arc gap,which remains almost constant even if as usual the welder varies the position of the electrode

A voltage ,which remains almost constan even if as usual the welder ,varies the arc gap

A current ,which remains almost constan even if as usual the welder ,varies the arc gap

A and b

All of the above

Must always be carried out

Is always carried out using a gas flame

Need not be carried out if post weld heat treatment is to follow

None of the above