TIG final

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

Help!

Question

Answer

the backing strip for welding mild steel up to 3/4" thick should be _________ thick by _____ wide.

3/8";3"

🗑

surfacing welds are used to

build up surfaces

🗑

the most common defect caused by surface contamination is

porosity

🗑

which of the following is a correct statement with regard to cleaning of base metals before welding?

all metals should be cleaned before welding

🗑

wire brushing will not remove

tight corrosion

🗑

a detailed listing of the rules and principles that apply to specific welded products is a

welding code

🗑

mechanical joint preparation is ________ than thermal methods of joint preparation

slower

🗑

compared to a single v-groove weld, a double v-groove weld .

requires half the weld metal

🗑

plug and slot welds are used with _______ joints

lap

🗑

the groove angle for welding open root welds on plate should be ______ degrees

🗑

preparing a joint with oxyfuel, plasma arc, or carbon arc cutting processes is known as _________ joint preparation

thermal

🗑

pipe beveling machines are designed to cut and bevel pipe from ________ in diameter

2" to 60"

🗑

always try to position the weldment so that welding is performed in the ________ position

flat

🗑

large areas of surface corrosion are best removed by

angle grinders and end grinders

🗑

special internal equipment is available for cutting pipe larger than ________ in diameter

🗑

essential variables identified by a welding procedure specification (WPS) are items that cannot be changed without ________.

requalifying the welding procedure

🗑

most porosity is caused by improper welding techniques and _________.

contamination

🗑

A complete set of fillet weld gauges includes seven individual blade gauges that can measure _______ different weld sizes

🗑

The private organization that does not actually prepare standards, but instead adopts standards that it determines are of value to the public interest is called the ________

American National Standards Institute (ANSI)

🗑

which destructive test requires that the sample be pulled until it breaks

tensile test

🗑

the failure of the filler metal to penetrate and fuse with an area of the weld joint is known as _________

incomplete joint penetration

🗑

the results of testing the WPS for a job are recorded on a _________ and kept on file.

procedure qualification record (PQR)

🗑

The most common defects found by a liquid penetrant test are _________

surface cracks

🗑

when inspecting a fillet weld, the convexity of a fillet weld will be approximately_______ times the actual face width or the width of the individual surface bead, plus 1/16"

0.07

🗑

A groove is melted into the base metal beside the weld in the condition called ___________

undercut

🗑

the specifications for acceptable welding and brazing filler metals and fluxes (part C) are contained in section ______ of the American Society of Mechanical Engineers (ASME) Boiler and pressure vessel code (BPVC).

🗑

in a typical ASME welder qualification test using an open root , if F3 electrodes are used all the way out, the welder qualifies on ___________ on both plate and pipe

F3 electrodes only

🗑

the gauge shown in the figure above is a(N) ____________ gauge

fillet weld

🗑

the number / letter designator for fillet welding on plate in the flat position is_______

🗑

porosity can be grouped into ______ major types

four

🗑

if you have a question about the quality of a weld and your supervisor is not available, who is the next person in the chain of command you should contact

general foreman

🗑

prior to welding, the base metal should be examined for conditions that may cause weld defects, and the dimensions should be __________

confirmed by measurement

🗑

the walls surrounding the area in which GTAW work is being performed should be painted with paint that is ______

non reflective

🗑

Carbon steel filler metals are identified by AWS specification A5.18 and low - alloy steel filler metals are identified by AWS specification ___________

A5.28

🗑

when filler metal is graded for rigid control fabrication, the purchaser receives________

certificate of conformance

🗑

if you see the label TIG on a welding machine, that machine is considered to be what kind of a welding machine

GTAW

🗑

GTAW is almost always performed using

DCEN . direct current electrode negative

🗑

GTAW commonly uses the same power sources and welding machines used for

SMAW

🗑

the two principal shielding gases used for GTAW are _________

argon and helium

🗑

for GTAW the electrode is clamped in place inside the torch body by the

collet assembly

🗑

when welding with GTAW in a cross draft situation better shielding is provided by

argon

🗑

higher shielding gas flow rates are required with

larger nozzles

🗑

in the atmosphere near the weld the uv radiation from the GTAW process can ionize

oxygen

🗑

of the various types of tungsten electrodes available the tungsten electrodes that are used for AC welding are

pure

🗑

which welding process is recommended for the repair of a defect on clean magnesium castings

GTAW

🗑

one of the advanced features associated with the GTAW process is the high frequency intensity controls that provide better

arc starting

🗑

in a root pass the penetration is controlled by using the correct torch travel speed and

amperage

🗑

compared to the diameter of the electrode being used stringer beads are generally no more than how many times the diameter of the electrode

🗑

when making GTAW stringer beads in the vertical position you should use a push angle of

15-20 degrees

🗑

the major control of bead width is

arc length

🗑

with open v-groove weld the actual number of weld beads will vary depending on the

plate thickness

🗑

when performing cutting or welding operations that produce toxic fumes you must wear a respirator that supplies air from

outside the work space

🗑

in the walking the cup technique, the edge of the torch nozzle (cup) is rested

against the base metal

🗑

GTAW welding uses metal electrodes that are

tungsten

🗑

when terminating a GTAW weld the crater must be filled to the full cross section of the weld to prevent

cracking

🗑

if the tungsten electrode touches the filler metal the welder must

clean the electrode

🗑

when running the fourth bead of a GTAW fillet weld in the 1F position how much of the second bead should you overlap

1/2

🗑

a good overlapping bead will have a

nearly flat surface

🗑

when making a GTAW fillet weld in the horizontal (2F) position , pay close attention to the

torch angles

🗑

the travel angle created when the torch is tilted backward so that the tip precedes the torch in the direction of the weld is called a

push angle

🗑

in the freehand technique the GTAW filler rod should be held at what angle to the plate surface

20 degrees

🗑

when making a GTAW fillet weld in the 1f position the torch must be held at what angle to each plate surface

45 degrees

🗑

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.

To hide a column, click on the column name.

To hide the entire table, click on the "Hide All" button.

You may also shuffle the rows of the table by clicking on the "Shuffle" button.

Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Created by: grace17grace