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Arc Welding Basics Arc Welding Basics

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Page 1: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Arc W

eldingBasics

Arc W

eldingBasics

Page 2: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Un

it T

op

ics

Un

it T

op

ics

•T

opic

s inclu

ded in t

his

overv

iew

are

:

–Introduction

�W

hat is

Arc

Weld

ing?

�W

hy

is W

eld

ing I

mport

ant?

�W

hy

Learn

to W

eld

?

–Careers in W

elding

2

–Careers in W

elding

–The American W

elding

Society (AWS)

–Welding Safety

–Basic Electricity

–Welding Fundamentals

–Welding C

ertification

Page 3: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ob

jec

tiv

es

Ob

jec

tiv

es

•U

pon s

uccessfu

l com

ple

tion o

f th

is u

nit o

f stu

dy, you w

ill

be a

ble

to "

Identify definitions and term

inology associated with w

elding

–Demonstrate safe working habits in the welding environment

–Name the parts and types of welds and weld joints

–Interpret basic welding symbol inform

ation

3

–Interpret basic welding symbol inform

ation

–Identify opportunities available to welders

Page 4: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Introduction

Introduction

Page 5: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

at

is A

rc W

eld

ing

?W

ha

t is

Arc

We

ldin

g?

•A

rc w

eld

ing

is m

ost

co

mm

on

ly u

se

d t

o jo

in t

wo

p

iece

s o

f m

eta

l

–The welder creates an electric arc that melts the

base m

etals and filler metal (consumable) together

so that they all fuse into one solid piece of metal

5

Ste

el P

ipe –

Tack

Weld

ed

Root P

ass o

r “S

trin

ger

Bead”

Fin

al w

eld

aft

er

severa

l beads a

re

made

Page 6: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

y i

s W

eld

ing

Im

po

rta

nt?

Wh

y i

s W

eld

ing

Im

po

rta

nt?

•M

any thin

gs a

round u

s a

re w

eld

ed "

–Pipelines that bring fresh water

–Towers that carry electricity to houses

–Cars and buses that take people where they need to go

6

Page 7: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

y L

ea

rn t

o W

eld

?W

hy L

ea

rn t

o W

eld

?

•W

eld

ing

is s

o H

OT

".

it’s

CO

OL

!

–Welding can help build a successful career so you

can get the things you w

ant in life

–Skilled w

elders are in demand –

people use things

that are welded everyday!

7

–Welding can be fun and safe

–It is challenging and high-tech

Page 8: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ba

sic

Ste

ps

of

Arc

We

ldin

gB

as

ic S

tep

s o

f A

rc W

eld

ing

•P

repare

the b

ase m

ate

rials

: re

move p

ain

t and r

ust

•C

hoose t

he r

ight

weld

ing p

rocess

•C

hoose t

he r

ight

fille

r m

ate

rial

•A

ssess a

nd c

om

ply

with s

afe

ty r

equirem

ents

•U

se p

roper

weld

ing t

echniq

ues a

nd b

e s

ure

to p

rote

ct

8

•U

se p

roper

weld

ing t

echniq

ues a

nd b

e s

ure

to p

rote

ct

the m

olten p

uddle

fro

m c

onta

min

ants

in t

he a

ir

•In

spect th

e w

eld

Page 9: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Th

e A

me

ric

an

We

ldin

g S

oc

iety

Th

e A

me

ric

an

We

ldin

g S

oc

iety

•W

ho is

the A

WS

?–

American W

elding Society

–It is a non-profit organization w

hose m

embership includes:

�In

div

idu

als

�S

tud

en

ts

�C

om

pa

nie

s

9

•W

ha

t d

o t

he

y d

o?

Their purpose is to:

�A

dva

nce

th

e s

cie

nce

, te

ch

no

log

y, a

nd

ap

plic

atio

n o

f w

eld

ing

an

d a

llie

d

pro

ce

sse

s in

clu

din

g: jo

inin

g, b

razin

g,

so

lde

rin

g,

cu

ttin

g,

an

d t

he

rma

l sp

ray

�S

tan

da

rdiz

e c

lassific

atio

n o

f e

lectr

od

e a

nd

ba

se

ma

teri

al co

de

s

�S

tan

da

rdiz

e p

roce

ss p

roce

du

res

�P

rovid

e w

eld

ing

ce

rtific

atio

n

Page 10: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Care

ers

in

Weld

ing

Care

ers

in

Weld

ing

10

Care

ers

in

Weld

ing

Care

ers

in

Weld

ing

Page 11: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ca

ree

rs in

We

ldin

gC

are

ers

in

We

ldin

g

•E

ngin

eering

•R

acin

g

•In

dustr

ial S

ale

s

•R

obotics

•Ir

onw

ork

er/

Skill

ed

Tra

des

Jo

b o

pp

ort

un

itie

s in

we

ldin

g a

re c

ha

ng

ing

"Welding can be valuable as a job skillor as a

full-time job

11

•In

dustr

ial S

ale

s

•F

arm

Repair a

nd F

abrication

•P

roduction W

eld

ing

•M

ilita

ry

•T

eachin

g

•M

ain

tenance

Tra

des

•A

uto

Technic

ian

•A

rtis

t

•M

eta

l Sculp

ting

•O

wnin

g Y

our

Ow

n

Busin

ess

Fo

r m

ore

in

form

atio

n o

n w

eld

ing

ca

ree

rs,

ple

ase

se

e t

he

e

-le

arn

ing

intr

od

uctio

n

Page 12: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ho

w M

uc

h M

on

ey

Ca

n Y

ou

Ma

ke

?

Ho

w M

uc

h M

on

ey

Ca

n Y

ou

Ma

ke

?

•R

ecent

sta

tistics s

how

th

at som

e w

eld

ing jobs

pay $

25.0

0 p

er

hour

-If you worked five days a

week for one year, how

much m

oney would you

12

much m

oney would you

make?

•83%

of people

with

weld

ing jobs w

ere

off

ere

d m

edic

al benefits

-Higher than any other work

sector except government

Fo

r m

ore

in

form

atio

n o

n w

eld

ing

sta

tistics,

ple

ase

log

on

to

ww

w.b

ls.g

ov

Page 13: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ap

pli

cati

on

Acti

vit

yA

pp

licati

on

Acti

vit

y

13

Ap

pli

cati

on

Acti

vit

yA

pp

licati

on

Acti

vit

y

Page 14: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ap

pli

ca

tio

n A

cti

vit

yA

pp

lic

ati

on

Ac

tiv

ity

•L

et’

s e

xp

lore

so

me

ca

ree

r p

os

sib

ilit

ies

in

we

ldin

g

•P

lea

se

lo

g o

n t

o a

co

mp

ute

r

•W

ork

ing

wit

h a

te

am

me

mb

er,

re

se

arc

h t

he

we

bs

ite

s t

o t

he

rig

ht

an

d e

xp

lore

in

form

ati

on

ab

ou

t w

eld

ing

ca

ree

rs

•In

60

min

ute

s,

be

pre

pa

red

to

a

ns

we

r th

e f

oll

ow

ing

qu

es

tio

ns

:

•A

merica's

Job B

ank

(htt

p:/

/ww

w.a

jb.d

ni.us)

•C

lassifie

ds E

mplo

yment

(htt

p:/

/ww

w.c

lassifie

ds200

0.c

om

)•

Yahoo!

Care

ers

(h

ttp:/

/care

ers

.yahoo.c

om

/)•

MO

NS

TE

R.C

OM

( h

ttp:/

/ww

w.m

onste

r.com

)(h

ttp:/

/nccer.

monste

r.com

)

14

an

sw

er

the

fo

llo

win

g q

ue

sti

on

s:

–What careers in welding interest you

the m

ost?

–How can welding be high tech?

–How m

uch m

oney can be m

ade

annually in this chosen career field?

–Where can you get a job in welding

and what are the basic requirements?

–What are some job advancement

opportunities available in the welding

industry?

(htt

p:/

/nccer.

monste

r.com

)•

Care

erB

uild

er

(htt

p:/

/ww

w.c

are

erb

uild

er.

com

)

Page 15: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Weld

ing

Safe

tyW

eld

ing

Safe

ty

15

Weld

ing

Safe

tyW

eld

ing

Safe

ty

Page 16: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

•W

eld

ing c

an b

e s

afe

when s

uff

icie

nt

measure

s a

re

taken to p

rote

ct yours

elf a

nd o

thers

fro

m p

ote

ntial

hazard

s

•S

tudents

should

read a

nd u

nders

tand t

he follo

win

g

befo

re w

eld

ing:

Arc

We

ldin

g S

afe

tyA

rc W

eld

ing

Sa

fety

16

–Warning Labels

–Material Safety Data Sheets (MSDS)

•S

tudents

should

als

o b

e f

am

iliar

with t

he f

ollo

win

g

info

rmation

–‘Safety in W

elding, Cutting, and Allied Processes’ (A

NSI Z49.1)

–Lincoln Electric’s ‘Arc W

elding Safety’ (E

205)

Page 17: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wa

rnin

g L

ab

els

Wa

rnin

g L

ab

els

•U

nd

ers

tan

d a

nd

fo

llow

all

wa

rnin

g

lab

els

fo

un

d:

–On welding equipment

–With all consumable

17

–With all consumable

packaging

–Within instruction

manuals

Page 18: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ma

teri

al S

afe

ty D

ata

Sh

ee

tsM

ate

ria

l S

afe

ty D

ata

Sh

ee

ts

•M

ate

rial S

afe

ty D

ata

S

heets

(M

SD

S)

are

:–

Required by law and

OSHA

–Created by the

manufacturer of a product

18

manufacturer of a product

per OSHA guidelines

–Designed to inform

users

–Shipped with every box of

Lincoln Electric

consumable product

–Available free online at:

www.lincolnelectric.com/product

s/m

sds/

front

Page 19: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

MS

DS

-C

on

tin

ue

dM

SD

S -

Co

nti

nu

ed

•M

SD

S o

utlin

es a

p

rod

uct’s:

�Id

entity

and

com

positio

n

�P

ote

ntial hazard

s

19

�P

ote

ntial hazard

s

�S

afe

use

�H

andlin

g info

rmation

�M

anufa

ctu

rer

conta

ct in

form

ation

back

Page 20: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

AN

SI

Z4

9.1

AN

SI

Z4

9.1

•A

NS

I Z

49.1

: S

afe

ty in

Weld

ing,

Cutt

ing, and A

llied

Pro

cesses

–A safety document published by the American W

elding Society that

covers safe practices in the welding environment

–To get your free copy, go to:

�w

ww

.aw

s.o

rg/t

ech

nic

al/fa

cts

/Z4

9.1

-20

05

-all.

pd

f

20

•E

205: A

rc W

eld

ing S

afe

ty–

A safety document summarizing many of the hazards and safe

practices for welding

–Download and print your own copy at:

�h

ttp

://c

on

ten

t.lin

co

lne

lectr

ic.c

om

/pd

fs/p

rod

ucts

/lite

ratu

re/e

20

5.p

df

–Free copies available from Lincoln Electric at:

�w

ww

.lin

co

lne

lectr

ic.c

om

/pro

du

cts

/litre

qu

est

•A

ccess the E

-learn

ing S

ite @

ww

w.a

ged

learn

ing.c

om

Page 21: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Arc

We

ldin

g S

afe

tyA

rc W

eld

ing

Sa

fety

•P

rote

ct yo

urs

elf a

nd

o

the

rs fro

m p

ote

ntia

l h

aza

rds in

clu

din

g:

–Fumes and G

ases

–Electric Shock

21

–Arc Rays

–Fire and Explosion

Hazards

–Noise

–Hot objects

Page 22: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Fu

me

s a

nd

Ga

se

sF

um

es

an

d G

as

es

•F

um

es a

nd g

ases c

an b

e

hazard

ous t

o y

our

health

•K

eep y

our

head o

ut of th

e

fum

es

•U

se e

nough v

entila

tion,

exh

aust

at th

e a

rc, or

both

,

22

exh

aust

at th

e a

rc, or

both

, to

keep f

um

es a

nd g

ases

from

your

bre

ath

ing z

one

and t

he g

enera

l are

a

•S

ee p

roduct

labelin

g a

nd

MS

DS

for

ventila

tion a

nd

respirato

r re

quirem

ents

Page 23: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ele

ctr

ic S

ho

ck

Ele

ctr

ic S

ho

ck

•E

lectr

ic s

ho

ck c

an

kill

•D

o n

ot to

uch

liv

e e

lectr

ica

l p

art

s–Primary Voltage –230, 460

volt input power

–Secondary Voltage –

6 to

23

–Secondary Voltage –

6 to

100 volts for welding

•In

su

late

yo

urs

elf f

rom

w

ork

an

d g

rou

nd

•F

ollo

w a

ll w

arn

ing

s o

n

we

ldin

g e

qu

ipm

en

t

Do n

ot

make r

epairs

Do n

ot

make r

epairs

yours

elf,

ale

rt y

our

yours

elf,

ale

rt y

our

instr

ucto

r im

media

tely

!in

str

ucto

r im

media

tely

!

Page 24: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Arc

Ra

ys

Arc

Ra

ys

•Arc rays can injure eyes and

burn skin

•The welding arc is brighter

than the sun

•Precaution m

ust be taken to

24

•Precaution m

ust be taken to

protect your eyes and skin

from UV radiation

•Wear correct eye and body

protection

Page 25: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Fir

e a

nd

Ex

plo

sio

n H

aza

rds

Fir

e a

nd

Ex

plo

sio

n H

aza

rds

•W

eld

ing s

park

s c

an c

ause

fire

s a

nd e

xplo

sio

ns

•S

park

s a

nd s

patt

er

from

the

weld

ing a

rc c

an s

pra

y u

p t

o

35 feet fr

om

your

work

•F

lam

mable

mate

rials

should

25

•F

lam

mable

mate

rials

should

be r

em

oved f

rom

the w

eld

ing

are

a o

r shie

lded f

rom

spark

s

and s

patt

er

•H

ave a

fire e

xtin

guis

her

ready

•In

spect are

a f

or

fire

s 3

0

min

ute

s a

fter

weld

ing

Page 26: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

No

ise

No

ise

•L

ou

d n

ois

es c

an

da

ma

ge

yo

ur

he

ari

ng

•K

ee

p lo

ud

no

ise

s a

t a

sa

fe le

ve

l b

y u

sin

g p

rop

er

he

ari

ng

pro

tectio

n s

uch

as:

–Ear plugs

26

–Ear plugs

–Ear muffs

Page 27: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Pro

tec

tiv

e C

loth

ing

Pro

tec

tiv

e C

loth

ing

Weld

ers

must w

ear

pro

tective

clo

thin

g f

or

–Protection from sparks, spatter and U

V

radiation

–Insulation from electric shock

27

•P

rote

ctive c

loth

ing inclu

des "

–Fire-proof clothing w

ithout rolled sleeves,

cuffs or frays

–Work boots

–Welding gloves, jackets, bibs, and fire-

proof pants

–Welding cap, helm

et and safety glasses

–Ear protection –

ear plugs and m

uffs

Page 28: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ap

pli

cati

on

Acti

vit

yA

pp

licati

on

Acti

vit

y

28

Ap

pli

cati

on

Acti

vit

yA

pp

licati

on

Acti

vit

y

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Ap

pli

ca

tio

n A

cti

vit

yA

pp

lic

ati

on

Ac

tiv

ity

•T

IME

TO

PR

AC

TIC

E

–Go out to the lab

–Demonstrate the use

of proper safety

precautions such as:

29

�R

ea

din

g w

arn

ing

s

�U

sin

g p

rop

er

pro

tective

clo

thin

g

�E

qu

ipm

en

t in

sp

ectio

n

�K

ee

pin

g y

ou

r h

ea

d o

ut

of th

e fu

me

�P

rop

er

ve

ntila

tio

n

Page 30: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Basic

Ele

ctr

icit

y a

nd

Weld

ing

Basic

Ele

ctr

icit

y a

nd

Weld

ing

30

Weld

ing

Weld

ing

Page 31: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Th

e A

rc W

eld

ing

Cir

cu

it

Th

e A

rc W

eld

ing

Cir

cu

it

•T

he

ele

ctr

icity flo

ws

fro

m th

e p

ow

er

so

urc

e, th

rou

gh

th

e

ele

ctr

od

e a

nd

acro

ss

the

arc

, th

rou

gh

th

e

31

the

arc

, th

rou

gh

th

e

ba

se

ma

teri

al to

th

e

wo

rk le

ad

an

d b

ack

to th

e p

ow

er

so

urc

e

Page 32: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ba

sic

Ele

ctr

icit

yB

as

ic E

lec

tric

ity

•V

oltage –

The e

lectr

ical

pote

ntial or

pre

ssure

that

causes c

urr

ent to

flo

w–

Measured in

Volts

•C

urr

ent –

The m

ovem

ent

of charg

ed p

art

icle

s in a

specific

direction

DC

+

DC

-

32

specific

direction

–Measured in

Amps

•P

ola

rity

–DC-(D

irect Current

Electrode Negative)

–DC+(D

irect Current

Electrode Positive)

–AC(A

lternating Current)

AC

Page 33: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Math

Term

s

an

d W

eld

ing

Math

Term

s

an

d W

eld

ing

33

an

d W

eld

ing

an

d W

eld

ing

Page 34: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ma

th T

erm

s i

n W

eld

ing

M

ath

Te

rms

in

We

ldin

g

•B

eli

eve it

or

no

t, a

lo

t o

f m

ath

is u

sed

in

weld

ing

IPM

Tra

ve

l S

pe

ed

= In

ch

es p

er

Min

ute

Tra

ve

l Sp

ee

dT

he

sp

ee

d th

e e

lectr

od

e m

ove

s

alo

ng

th

e b

ase

ma

teri

al

IPM

Wir

e F

ee

d S

pe

ed

= In

ch

es

pe

r M

inu

te W

ire

Fe

ed

Sp

ee

dT

he

sp

ee

d a

t w

hic

h th

e w

ire

is

fed

du

rin

g w

ire

we

ldin

g

Lb

s/h

r =

Po

un

ds p

er

Ho

ur

Ele

ctr

od

e d

ep

ositio

n r

ate

34

Lb

s/h

r =

Po

un

ds p

er

Ho

ur

Ele

ctr

od

e d

ep

ositio

n r

ate

CF

H=

Cu

bic

Fe

et p

er

Ho

ur

Sh

ield

ing

ga

s flo

w r

ate

(w

ire

w

eld

ing

)

PS

I= P

ou

nd

s p

er

Sq

ua

re In

ch

Te

nsile

str

en

gth

of a

ma

teri

al a

nd

th

e p

ressu

re in

ga

s c

ylin

de

rs

L =

Le

gF

ille

t siz

e m

ea

su

rem

en

t

% =

pe

rce

nt

Sh

ield

ing

ga

s m

ixtu

re

co

mp

ositio

n

Page 35: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Meta

lsM

eta

ls

35

Meta

lsM

eta

ls

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Ca

n A

ll M

eta

ls B

e W

eld

ed

?

Ca

n A

ll M

eta

ls B

e W

eld

ed

?

•M

ost m

eta

ls c

an

be

we

lde

d,

bu

t n

ot

all

•T

he

th

ree

mo

st co

mm

on

we

lda

ble

me

tals

in

clu

de

:–

Mild Steel -inexpensive and strong

–Stainless Steel –does not rust

36

–Aluminum –

does not rust and is light weight

Mild

ste

el

Sta

inle

ss S

teel

Alu

min

um

Page 37: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Ga

ug

eG

au

ge

•M

ate

ria

l th

ickn

ess is

so

me

tim

es m

ea

su

red

by

ga

ug

e f

rom

36

(.0

04

in

) to

3 (

.23

91

in

) –

For example, steel gauge and m

easurement in inches:

37

PL

EA

SE

NO

TE

: A

s t

he g

au

ge n

um

ber

gets

sm

all

er

D t

he m

ate

rial th

ickn

ess g

ets

larg

er.

16 g

au

ge

= .051”

1

4 g

au

ge

= .064”

1

2 g

au

ge

= .081”

1

0 g

au

ge

= .102”

Page 38: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Typ

es o

f Jo

ints

Typ

es o

f Jo

ints

38

Typ

es o

f Jo

ints

Typ

es o

f Jo

ints

Page 39: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Typ

es

of

Jo

ints

T

yp

es

of

Jo

ints

•T

he

re a

re 5

typ

es o

f jo

ints

"

39

Page 40: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Part

s o

f a W

eld

Part

s o

f a W

eld

40

Part

s o

f a W

eld

Part

s o

f a W

eld

Page 41: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Pa

rts

of

a W

eld

Pa

rts

of

a W

eld

41

Jo

int a

nd

We

ldJo

int a

nd

We

ld

He

at A

ffe

cte

d Z

on

eH

ea

t A

ffe

cte

d Z

on

e

Page 42: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Fil

let

an

d G

roo

ve

We

lds

Fil

let

an

d G

roo

ve

We

lds

•G

roo

ve

an

d f

ille

t w

eld

s c

an

be

ma

de

on

ma

ny

typ

es o

f jo

ints

42

Page 43: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Fil

let

We

ld I

ns

pe

cti

on

Fil

let

We

ld I

ns

pe

cti

on

•F

illet

weld

s s

hould

: –

Have a flat to slightly convex face

–Be uniform

in appearance

–Have equal leg size

–Have good wash-in into base m

aterials

•T

his

is a

n e

xam

ple

of a g

ood f

illet

weld

:

43

•T

his

is a

n e

xam

ple

of a g

ood f

illet

weld

:

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Weld

ing

Sym

bo

lsW

eld

ing

Sym

bo

ls

44

Weld

ing

Sym

bo

lsW

eld

ing

Sym

bo

ls

Page 45: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

at

are

We

ldin

g S

ym

bo

ls?

Wh

at

are

We

ldin

g S

ym

bo

ls?

•W

eld

ing

sym

bo

ls g

ive

th

e w

eld

er

sp

ecific

in

str

uctio

ns a

bo

ut

the

w

eld

in

clu

din

g:

–Placement

•W

eld

ing

sym

bo

ls a

re

–Universally used

–Governed by the AWS

–Found on engineering

drawings

45

–Placement

–Size

–Length

–Process

–Any other special

notes

drawings

“How

to R

ead S

hop D

raw

ings”

ava

ilable

at w

ww

.jflf.

org

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We

ldin

g S

ym

bo

lsW

eld

ing

Sym

bo

ls

•W

eld

ing

sym

bo

ls c

on

tain

in

form

atio

n a

bo

ut

the

w

eld

to

be

ma

de

46

we

ld t

o b

e m

ad

e

–S –

leg dim

ension of the weld

–Triangle –

the w

eld is to be m

ade on the arrow side of this joint

–Tail –any additional inform

ation required (i.e. position the weld

is to be m

ade)

–Arrow -the joint the w

elding symbol applies to

Page 47: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Weld

ing

Po

sit

ion

sW

eld

ing

Po

sit

ion

s

47

Weld

ing

Po

sit

ion

sW

eld

ing

Po

sit

ion

s

Page 48: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

at

are

We

ldin

g P

os

itio

ns

?W

ha

t a

re W

eld

ing

Po

sit

ion

s?

•T

here

are

various p

ositio

ns t

hat a w

eld

can b

e m

ade in:

48

Page 49: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Weld

er

Resp

on

sib

ilit

ies

Weld

er

Resp

on

sib

ilit

ies

49

Resp

on

sib

ilit

ies

Resp

on

sib

ilit

ies

Page 50: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Wh

at

are

th

e

Re

sp

on

sib

ilit

ies

of

a W

eld

er?

Wh

at

are

th

e

Re

sp

on

sib

ilit

ies

of

a W

eld

er?

•W

eld

ers

ha

ve

ma

ny a

rea

s o

f im

po

rta

nt

resp

on

sib

ilitie

s

•T

he

se

re

late

to

:

–Arc W

elding Safety

–Knowledge –

Content

50

–Knowledge –

Content

–Attitude –

Reactions

–Skills –

Perform

ance

–Work Habits –

Daily Functions

Alw

ays

keep s

afe

ty in

min

d w

hen w

eld

ing

Page 51: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Arc

We

ldin

g S

afe

tyA

rc W

eld

ing

Sa

fety

•A

we

lde

r M

US

T a

lwa

ys f

ollo

w s

afe

wo

rk

pra

ctice

s:

–Students should read and understand the following before

welding:

�W

arn

ing L

abels

�M

ate

rial S

afe

ty D

ata

Sheets

(M

SD

S)

51

�M

ate

rial S

afe

ty D

ata

Sheets

(M

SD

S)

–Students should also be familiar with the following inform

ation

�‘S

afe

ty in W

eld

ing,

Cutt

ing,

and A

llied P

rocesses’ (A

NS

I Z

49.1

)

�Lin

coln

Ele

ctr

ic’s

‘A

rc W

eld

ing S

afe

ty’ (E

205)

Page 52: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Kn

ow

led

ge

-C

on

ten

tK

no

wle

dg

e -

Co

nte

nt

•W

eld

ing

ca

n t

ea

ch

yo

u a

bo

ut"

.–Sciencewhen applying

metallurgy, chemistry,

electricity, etc.

–Math

when calculating

angles, joint design, and

52

angles, joint design, and

weld size

–Englishwhen

communicating and

interpreting drawings,

codes, and procedures

–Technical areas when

perform

ing the actual

welding applications

How

much s

cie

nce a

nd

math

went

into

the

develo

pm

ent

of

this

bik

e?

Page 53: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Att

itu

de

Att

itu

de

•T

he b

est w

eld

ers

dem

onstr

ate

a c

an-d

o

att

itude w

hen p

erf

orm

ing

weld

ing p

rocesses

•T

his

means b

ein

g a

ble

to"

–Work as a team m

ember

53

–Work as a team m

ember

–Communicate ideas to others

–Listen to opinions of others

–Promote a positive attitude

–Provide solutions to problems

–Take pride in w

orkmanship

These w

eld

ers

work

togeth

er

to in

spect

a w

eld

.

Page 54: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

Sk

ills

/Pe

rfo

rma

nc

eS

kil

ls/P

erf

orm

an

ce

•A

weld

er

must

dem

onstr

ate

technic

al

skill

s w

hen p

erf

orm

ing

weld

ing p

rocesses

•A

weld

er

must know

how

to

:

54

–Use hand tools and m

aterials,

to operate equipment in a safe,

accurate, and consistent

manner

–Acquire and evaluate

inform

ation needed for

problem solving

–Complete quality w

ork

–Maintain equipment

There

is n

o r

oom

for

poor

work

manship

in N

AS

CA

R

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Wo

rk H

ab

its

/Da

ily F

un

cti

on

sW

ork

Ha

bit

s/D

ail

y F

un

cti

on

s

•A

weld

er

must pra

ctice g

ood

work

ing h

abits w

hen

perf

orm

ing w

eld

ing

pro

cesses

•T

his

means b

ein

g a

ble

to "

–Follow detailed verbal and

written instructions

55

written instructions

–Maintain workspace,

equipment, and tool

cleanliness

–Correctly fill out, m

aintain and

submit tim

e cards, work

assignment cards, and other

records as required

–Follow safe working practices

Agriculture

teachers

bru

sh

up o

n t

heir w

eld

ing s

kill

s a

t Lin

coln

Ele

ctr

ic’s

Weld

ing

Educato

r’s W

ork

shop

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Weld

ing

Cert

ific

ati

on

Weld

ing

Cert

ific

ati

on

56

Weld

ing

Cert

ific

ati

on

Weld

ing

Cert

ific

ati

on

Page 57: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

We

ldin

g C

ert

ific

ati

on

We

ldin

g C

ert

ific

ati

on

•W

hat is

a w

eld

ing c

ert

ific

ation?

–Welding certifications are used to test a w

elder’s knowledge and

welding skill

–Certifications are available for many different processes, materials, and

positions.

•W

ho c

ert

ifie

s w

eld

ers

?

57

–Certification programs are offered by m

any different types of

organizations:

�C

om

panie

s

�S

kill

ed T

rades

�M

ilita

ry

�S

hip

Build

ers

�P

ipelin

es

�T

he A

merican W

eld

ing S

ocie

ty

Page 58: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

We

ldin

g C

ert

ific

ati

on

We

ldin

g C

ert

ific

ati

on

•H

ow

can y

ou b

ecom

e c

ert

ifie

d?

–Certification testing is available at testing facilities all over the

United States

–The AWS offers m

any certifications including: welders, welding

inspectors, and welding educators

•W

hat is

the v

alu

e o

f a w

eld

ing c

ert

ific

ation?

58

•W

hat is

the v

alu

e o

f a w

eld

ing c

ert

ific

ation?

–A welding certification proves that you have passed a test and are

qualified for the job

–As an AWS certified welder your name is kept in a national

database which is used to notify you of jobs open in your area

–It is a source of accomplishment and pride

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En

gli

sh

, M

ath

, an

d

Scie

nce C

on

necti

on

En

gli

sh

, M

ath

, an

d

Scie

nce C

on

necti

on

59

Scie

nce C

on

necti

on

Scie

nce C

on

necti

on

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En

gli

sh

, M

ath

, a

nd

Sc

ien

ce

Co

nn

ec

tio

n

En

gli

sh

, M

ath

, a

nd

Sc

ien

ce

Co

nn

ec

tio

n

•M

an

y o

f th

e s

am

e c

on

ce

pts

yo

u le

arn

in

oth

er

cla

sse

s a

re p

ractice

d in

we

ldin

g.

In

wh

at

oth

er

cla

sse

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Page 61: Arc WeldingBasics - SchoolMessengerwbsdeast.sharpschool.net/UserFiles/Servers/Server_2992254/File... · –Science when applying metallurgy, chemistry, electricity, etc. – Math

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–NM-PROB.CONN.PK-12.3:Recognizes and applies

mathematics in contexts outside of mathematics.

61

mathematics in contexts outside of mathematics.

–NLA-STANDARD 1: U

ses the general skills and strategies of

the writing process.

–NLA-STANDARD 7: U

ses reading skills and strategies to

understand and interpret a variety of inform

ational texts.

–NS-PHYSICAL SCIENCE: (Experiences) interactions of energy

and m

atter.