WELDING Position.pdf

7/27/2019 WELDING Position.pdf

1/58

Sperko Engineering

2005

WWW.SPERKOENGINEERING.C

OM

Understanding

Position in Welding

Walter J. Sperko, P. E.

Sperko Engineering Services, Inc.

4803 Archwood Dr.

Greensboro, NC 27406

www.sperkoengineering.com

[email protected]

FAX 336-674-0202

Sperko Engineering

2005


OM

This presentation is copyrighted

by Sperko Engineering

General permission is granted for use of this

presentation including printing thereof for

educational purposes provided credit is

given to Sperko Engineering. Use of the figures herein in any other

publication without specific written

permission is prohibited.


2/58

Sperko Engineering

2005


OM

This presentation is copyrighted

by Sperko Engineering

The primary purpose of this presentation is

twofold:

Make sure that code users understand the

difference between testing positions and

production welding positions

Help users understand how to read the figures

that define production welding positions shown

on the next page.

Sperko Engineering

2005


OM

Production Welding Positions

Groove Welds Fillet Welds


3/58

Sperko Engineering

2005


OM

Standard Test Positions

Positions 1G, 3G, 6G, 2F, 5F, etc. are

specially defined standard positions

used for testing. They are properly

referred to as Test Positions. Similar

positions are found in ISO 6947

identified as PA, PC, PG, etc.

Sperko Engineering

2005


OM

Standard Testing Positions

Test positions are discreetly defined

positions of test coupons that are used

when mostly when testing welders.

These positions have tolerance of 15

from the defined horizontal planes and

5 from a defined vertical or inclined

plane. See QW-120


4/58

Sperko Engineering

2005


OM

Testing Position 1G/PA

15

Weld Axis Horizontal

Plate Horizontal

5

Sperko Engineering

2005


OM

Test Position 2G/PC

Plates Vertical

Weld Axis

Horizontal

15

5


5/58

Sperko Engineering

2005


OM

Test Position 3F/PF or PG

5

Sperko Engineering

2005


OM

Test Position 6G/HL045 or JL045

455


6/58

Sperko Engineering

2005


OM

Test Positions are Discreetly

Defined

Because of tolerance limits on test positions,

positions in between test positions are undefined!

That is, a weld that is inclined 22 uphill and

rotated 36 about its axis has no G or F

position. Such a position, however, may be

encountered during production welding.

Production welding positions, therefore, need to

be defined contiguously.

Sperko Engineering

2005


OM

Test Positions Qualify Welders

for Specific Welding Positions

Test Positions

Welding PositionsTranslations from test positions to welding positions are

made in the construction codes. QW-461.9 is typical.


7/58

Sperko Engineering

2005


OM

Test PositionsWelding Positions

Sperko Engineering

2005


OM

Welding PositionsNote to table:

(1) Positions of welding as shown in QW-461.1 and QW-461.2

F = Flat

H = Horizontal

V = VerticalO = Overhead

(2) Pipe 2-7/8 in outside diameter and over.


8/58

Sperko Engineering

2005


OM

Welding positions for groove

welds are defined by the

following diagram.

NOTEWelding Position Diagrams are

contiguous.

Sperko Engineering

2005


OM

Welding Positions for Groove Welds


9/58

Sperko Engineering

2005


OM

Tabulation showing transition

points between welding positionsTabulation of Positions of Groove Welds

Position Diagram Reference Inclination of Axis Rotation of Face

Flat A 0 to 15 150 to 210

HorizontalB 0 to 15 80 to 150

210 to 280

Overhead C 0 to 80 0 to 80

210 to 360

Vertical D 15 to 80 80 to 280

E 80 to 90 0 to 360

How this table and the diagram on the previous page work are shown in the

following diagrams

Sperko Engineering

2005


OM

Lets start with the

Flat Position


10/58

Sperko Engineering

2005


OM

Welding Positions

Tabulation of Positions of Groove Welds


Flat A 0 to 15 150 to 210

Horizontal B 0 to 15 80 to 150

210 to 280


210 to 360


E 80 to 90 0 to 360

How this table and the diagram on the previous page work are shown in thefollowing diagrams

Sperko Engineering

2005


OM

Flat Positions Axis Inclination

15


11/58

Sperko Engineering

2005


OM

Start at Nominal Flat Position

Face of weld is up

Sperko Engineering

2005


OM

Flat Upward Inclined Limit

15

Weld may

incline upward

to a limit of 15


12/58

Sperko Engineering

2005


OM

Flat Upward Inclined Limit

15

But the welder

could be traveling

down the incline. . .

Sperko Engineering

2005


OM

FlatDownwardLimit Is Implied

15


13/58

Sperko Engineering

2005


OM

Welding Positions

Tabulation of Positions of Groove Welds


Flat A 0 to 15 150 to 210

Horizonta B 0 to 15 80 to 150

210 to 280


210 to 360


E 80 to 90 0 to 360

How this table and the diagram on the previous page work are shown in thefollowing diagrams

Sperko Engineering

2005


OM

Flat Position --Rotation About Axis180

0

3030

150

210


14/58


15/58

Sperko Engineering

2005


OM

Flat Rolled Limit Counterclockwise

30

150 180

Sperko Engineering

2005


OM

Flat Rotated Limits Not

Considering Inclination

60


16/58


17/58

Sperko Engineering

2005


OM

Flat Downhill Limit Rotated

15

Sperko Engineering

2005


OM

Composite Flat Position Ranges

30

60


18/58


19/58


20/58


21/58


22/58


23/58


24/58

Sperko Engineering

2005


OM

Horizontal Rotates to where the

plate is perpendicular to the ground

30

Horizontal rotates

clockwise . .

Sperko Engineering

2005


OM

Horizontal Position Rotated

Limit

30

Horizontal ends

here. . . .

10

90

280


25/58


26/58


27/58

Sperko Engineering

2005


OM

Test Position 2G/PC

Plates Vertical

Weld Axis

Horizontal

15

5

Sperko Engineering

2005


OM

Horizontal 2G/PC !!!!


28/58

Sperko Engineering

2005


OM

80

280

Overhead Position

160 range

Sperko Engineering

2005


OM

Basic Overhead

Face of weld

is overhead!!!

0


29/58

Sperko Engineering

2005


OM

Basic Overhead End View

Face of weld

is overhead 0

Sperko Engineering

2005


OM

Overhead Partial Rotation

End View

Face of weld

is overhead

0


30/58


31/58


32/58

Sperko Engineering

2005


OM

Face of weld

is overhead

Overhead Partial Rotation

Isometric View

0

Sperko Engineering

2005


OM

Overhead Maximum Rotation

Isometric View

0

280

Face of weld

On this side


33/58


34/58

Sperko Engineering

2005


OM

Basic Overhead for Inclined Axis

Face of weld

is overhead

0

Sperko Engineering

2005


OM

Overhead Inclined Axis Rotation

00


35/58


36/58


37/58


38/58


39/58


40/58

Sperko Engineering

2005


OM

Overhead 4G/PE !!!!

Sperko Engineering

2005


OM

Vertical Position Part 1

65 Range of Inclination

From 15 to 80.

Face of weld is up

15

80


41/58


42/58

Sperko Engineering

2005


OM


Until reaching 80

80

Sperko Engineering

2005


OM

Vertical Position Part 2When the E portion

of the

diagram is reached80


43/58


44/58


45/58


46/58


47/58


48/58

Sperko Engineering

2005


OM


80

280

200 Rangeof Rotation

Sperko Engineering

2005


OM


Start here with inclination

Uphill or Downhill 15

Face of weld upward

15


49/58


50/58


51/58


52/58


53/58


54/58


55/58


56/58


57/58


58/58

WELDING Position.pdf

Documents

Transcript of WELDING Position.pdf