Antoni

Garnis Nurfadila sari

LNG Academy

2014

Introduction

Tools

Basic Method

Parameters

SMAW Machine and Electrodes

Advantages and Limitations

Application

SMAW is an arc welding process that uses a consumable

electrode to initiate the arc and provide the filler

material.

Weld Helmet Goggle Working clothes Gloves Safety shoes Mask

Electric currents

Welding voltage

Welding speed

Electrodes diameter

Source

DC

DCSP

DCRP

AC

Cable length is not

affected

Voltage drop is not

sensitive

For specific electrode

Pole is not exchangable

Difficult arc starting

AWS (American Welding Society)

2,3, atau 4 digit pertama:

2 digit : kuat tarik hasil lasan <100.000 psi

3 atau 4 digit : kuat tarik hasil lasan > 100.000 psi

Digit selanjutnya :

Angka 1 : untuk segala posisi pengelasan

Angka 2 : las datar atau horizontal

Angka 3 : pengelasan datar

Digit yang terakhir menunjukan jenis dari campuran kimia

dari lapisan elektrode

High quality weld with low

cost.

Easy to practice and simple

Can be used anywhere

Can weld various types of

material and any thickness

Easy to set up

Can be used to weld all

positions

The electrodes available in

many sizes and diameters

Consumes bigger electric

current

Dirty work finish

Easy to oxidated

Electrode diameter depends

on plate and welding

position

Limited with electrode

length

Maintenance and repair industries

Pipelines

Naval Industry

Construction of steel structures

Locomotive

Automotive

Offshore platforms

Weld carbon steel, low and high alloy steel,

stainless steels, cast iron, aluminum, nickel and

cooper alloys

THANKYOU

http://akmalchaka.blogspot.com/2010/04/smaw-shielded-metal-arc-

welding.html

http://www.ewf.be